WO2016161924A1 - 光源系统和投影系统 - Google Patents

光源系统和投影系统 Download PDF

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Publication number
WO2016161924A1
WO2016161924A1 PCT/CN2016/078423 CN2016078423W WO2016161924A1 WO 2016161924 A1 WO2016161924 A1 WO 2016161924A1 CN 2016078423 W CN2016078423 W CN 2016078423W WO 2016161924 A1 WO2016161924 A1 WO 2016161924A1
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WO
WIPO (PCT)
Prior art keywords
light
timing
compensation
optical path
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/078423
Other languages
English (en)
French (fr)
Inventor
郭祖强
王则钦
胡飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Appotronics Corp Ltd
Original Assignee
Appotronics Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Priority to EP16776099.0A priority Critical patent/EP3282315B1/en
Priority to US15/564,180 priority patent/US10139713B2/en
Priority to JP2017552159A priority patent/JP6547005B2/ja
Publication of WO2016161924A1 publication Critical patent/WO2016161924A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3158—Modulator illumination systems for controlling the spectrum
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3161—Modulator illumination systems using laser light sources

Definitions

  • the present invention relates to the field of projector technology, and more particularly to a light source system and a projection system.
  • DLP Digital Light Procession
  • DMD Digital Micro Mirror Device
  • Existing DLP projection systems typically use monolithic DMD Or a three-piece DMD, however, because the two-chip DMD projection system has the advantages of both light efficiency and cost, the two-chip DMD projection system is also being more widely promoted.
  • a laser light source is applied as a supplementary light source to a two-chip DMD.
  • the way in the projection system is such that the color coordinates of the green and red light are closer to the color gamut standard.
  • a red laser is used as the compensation light
  • the red laser and the blue laser are incident on the yellow phosphor together, and since the red laser does not excite the yellow phosphor, a mixed light of blue light, yellow light, and red laser light can be obtained.
  • the color gamut of the red light can be compensated by the red laser, so that the color coordinate of the red light is closer to the color gamut standard.
  • compensating light such as a red laser is incident on the phosphor, the compensating light is affected by the scattering loss of the phosphor, resulting in low utilization efficiency of the compensating light.
  • the present invention provides a light source system and a projection system to solve the problem of low utilization efficiency of compensation light in the prior art.
  • a light source system including:
  • An excitation light source that emits excitation light at least at a first timing and a second timing
  • Rotating a color wheel including at least a first region and a second region, the first region sequentially generating at least two different colors under illumination of the excitation light at a first timing and a second timing Light, at least at a third timing, the second region for transmitting the compensation light;
  • the at least two different colors of light comprise at least one broad spectrum of fluorescence, the at least one color of the laser being used to compensate for the fluorescence or the light that is split by the fluorescence.
  • the spectral range of the compensated light partially overlaps the spectral range of the different colored light.
  • the compensation light source comprises a first compensation light source for emitting first compensation light and a second compensation light source for emitting second compensation light.
  • the projection system further includes a controller, the controller is configured to control the excitation light source to be turned on at a first timing and a second timing, and to be turned off at a third timing, to control the compensation light source to be turned on at a third timing, The first timing and the second timing are turned off.
  • the first region includes a fluorescent color segment and a reflective color segment
  • the reflective color segment reflects the excitation light in a first timing
  • the fluorescent color segment generates a yellow light under illumination of the excitation light in a second timing
  • the second region transmits the first compensation light and the second compensation light.
  • the fluorescent color segment is a color segment having a yellow fluorescent powder; the reflective color segment is a color segment having a scattering powder; and the second region is a transmissive diffusion color segment.
  • the light source system further includes at least one area coating filter, and the area coating filter is disposed on the excitation light source.
  • the area coating filter is disposed on the excitation light source.
  • the light source system further includes a controller, the controller is configured to control the excitation light source to be turned on at a first timing and a second timing, to be turned off at a third timing, or to control the excitation light source to be always turned on;
  • the controller is further configured to control the first compensation light source to be turned on at a third timing, to be turned off at the first timing and the second timing, to control the second compensation light source to be turned on at the second timing and the third timing, and to be turned off at the first timing
  • the controller is further configured to control the second compensation light source to be turned on at a third timing, turn off at the first timing and the second timing, and control the first compensation light source to be turned on at the second timing and the third timing, The first timing is turned off.
  • the light source system further includes at least one area coating filter and one dichroic mirror, the area coating filter Provided between the excitation light source and the rotating color wheel for reflecting the received laser light and the compensation light, the dichroic mirror being disposed between the compensation light source and the rotating color wheel for transmitting the compensation light The excitation light is reflected.
  • the first region comprises a fluorescent color segment and a transparent color segment
  • the fluorescent color segment generates yellow light under illumination of the excitation light
  • the transparent color segment transmits the excitation light at a second timing And the first compensation light, or the second timing
  • the transparent color segment transmits the excitation light and the second compensation light
  • the second timing transmits the first compensation light and the second compensation light.
  • the fluorescent color segment is a color segment having a yellow phosphor; the transparent color segment and the second region are transmissive diffusion color segments.
  • the excitation light is blue light
  • the first compensation light is red light
  • the second compensation light is cyan light.
  • a projection system comprising:
  • a light modulation system comprising a plurality of light modulators, the light modulators being in one-to-one correspondence with the optical paths to modulate light transmitted by the optical paths.
  • the spectroscopic system transmits the reflected excitation light along a second optical path at a first timing; the yellow light is at a second timing Dividing into red light transmitted along the first optical path and green light transmitted along the second optical path; the first compensation light is transmitted along the first optical path at a third timing, and the second compensation light is transmitted along the second optical path.
  • the spectroscopic system divides the yellow light into a first timing Green light transmitted along the first optical path and red light transmitted along the second optical path; the first compensation light is transmitted along the second optical path at a second timing, and the transmitted excitation light is transmitted along the first optical path;
  • the third timing causes the first compensation light to be transmitted along the second optical path, and the second compensation light is transmitted along the first optical path.
  • the spectroscopic system divides the yellow light into a first timing Red light transmitted along the first optical path and green light transmitted along the second optical path; the transmitted excitation light is transmitted along the first optical path at a second timing, and the second compensated light is transmitted along the second optical path;
  • the third timing causes the first compensation light to be transmitted along the first optical path, and the second compensation light to be transmitted along the second optical path.
  • said light modulation system comprises a first light modulator and a second light modulator, said first light modulator modulating light transmitted by said first optical path, said second light modulator The light transmitted by the second optical path is modulated.
  • the spectroscopic system divides the yellow light into a first timing Green light transmitted along the first optical path, red light transmitted along the second optical path, and excitation light transmitted along the third optical path; the first compensation light is transmitted along the second optical path at a second timing, so that the transmitted Excitation light is transmitted along the first optical path and the third optical path; the first compensation light is transmitted along the second optical path at a third timing, and the second compensation light is transmitted along the first optical path to enable the transmitted excitation light Transmitted along the third optical path.
  • the spectroscopic system divides the yellow light into a first timing Red light transmitted along the first optical path, green light transmitted along the second optical path, and excitation light transmitted along the third optical path; the transmitted excitation light is transmitted along the first optical path and the third optical path at a second timing
  • the second compensation light is transmitted along the second optical path; the first compensation light is transmitted along the first optical path at a third timing, and the second compensation light is transmitted along the second optical path to enable the transmitted excitation light Transmitted along the third optical path.
  • the light modulation system includes a first light modulator, a second light modulator, and a third light modulator, the first light modulator modulating light transmitted by the first optical path, the second A light modulator modulates light transmitted by the second optical path, and the third optical modulator modulates light transmitted by the third optical path.
  • the rotating color wheel includes a first area and a second area, the first area sequentially generates light of at least two different colors under illumination of the excitation light, and the second area is used for Transmitting the compensation light to synthesize the compensation light and the light of the different colors into a projection image, so that the compensation light does not need to be irradiated on the phosphor but directly transmits, reducing the scattering loss of the compensation light, and improving the compensation light Utilization.
  • FIG. 1 is a schematic structural diagram of a light source system according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of a rotating color wheel according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural diagram of a light source system according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of a rotating color wheel according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a projection system according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram of control of a first optical modulator and a second optical modulator according to Embodiment 3 of the present invention.
  • Figure 7 A timing diagram of an excitation light source, a compensation light source, a rotating color wheel, a first light modulator, and a second light modulator according to Embodiment 3 of the present invention
  • Embodiment 8 is a color gamut diagram of a projected image according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic structural diagram of a projection system according to Embodiment 4 of the present invention.
  • FIG. 10 is a schematic diagram of control of a first optical modulator and a second optical modulator according to Embodiment 4 of the present invention.
  • FIG. 11 A timing diagram of an excitation light source, a compensation light source, a rotating color wheel, a first light modulator, and a second light modulator provided by Embodiment 4 of the present invention
  • Figure 12 A timing diagram of an excitation light source, a compensation light source, a rotating color wheel, a first light modulator, a second light modulator, and a third light modulator provided by Embodiment 4 of the present invention
  • FIG. 13 Another timing diagram of the excitation light source, the compensation light source, the rotating color wheel, the first light modulator, the second light modulator, and the third light modulator provided by the fourth embodiment of the present invention
  • FIG. 14 Another timing diagram of the excitation light source, the compensation light source, the rotating color wheel, the first light modulator, and the second light modulator provided by the fourth embodiment of the present invention.
  • FIG. 15 is another schematic diagram of control of a first optical modulator and a second optical modulator according to Embodiment 4 of the present invention.
  • the light source system includes an excitation light source 101 and a compensation light source 102. And a rotating color wheel 103, wherein the excitation light source 101 is preferably a semiconductor laser emitting blue light having a wavelength of 445 nm, and the excitation light source 101 For emitting excitation light at least at a first timing and a second timing, the compensation light source 102 emits compensation light at least at a third timing, the compensation light including at least one color of laser light, rotating the color wheel 103 Include at least a first region and a second region, the first region sequentially generating at least two different colors of light under illumination of the excitation light at a first timing and a second timing, at least at a third timing, the second region being used Transmission compensation light, wherein the at least two different colors of light comprise at least one broad spectrum of fluorescence, the spectral range is 480-700 nm, the laser of at least one color is used to compensate for the fluorescence or the light split by the
  • the excitation source 101 and the compensation source 102 are respectively disposed on both sides of the rotating color wheel 103, and the light source system further includes at least one area coating filter, preferably including a region coating filter 107 and a mirror 108, and the region coating filter 107 Between the excitation light source 101 and the rotating color wheel 103 for reflecting the excitation light, the received laser light and the compensation light to the mirror 108, the mirror 108 Used to reflect excitation light, laser light, and compensation light.
  • the light source system further includes a collimating lens 109 and a collecting lens 110 which are sequentially disposed between the compensating light source 102 and the rotating color wheel 103. And a collimating lens 111 disposed between the area coating filter 107 and the excitation light source 101, and a collecting lens 112 disposed between the area coating filter 107 and the rotating color wheel 103 .
  • the compensation light source 102 includes a first compensation light source 1021 and a second compensation light source 1022, and the first compensation light source 1021 is used for transmitting the first compensation light, and the second compensation light source 1022 is for emitting the second compensation light.
  • the first compensation light is red light having a main wavelength of 638 nm
  • the second compensation light is a main wavelength. Cyan light of 520 nm, however, the present invention is not limited thereto, as long as the spectral range of the compensated light partially overlaps with the spectral range of the light of the above different colors.
  • the first compensation light source 1021 and the second compensation light source 1022 is preferably a semiconductor laser or a light emitting diode.
  • the rotating color wheel 103 includes a first area 201 and a second area 202.
  • the first region 201 includes a fluorescent color segment 2011 and a reflective color segment 2012
  • the first time-series reflection color segment 2012 reflects the excitation light
  • the second timed fluorescent color segment 2011 Yellow light is generated under illumination of the excitation light
  • the second timing second region 202 transmits the first compensation light and the second compensation light.
  • the fluorescent color segment 2011 is a color segment with a yellow fluorescent powder
  • the reflective color segment 2012 It is a color segment having a scattering powder
  • the second region 202 is a transmissive diffusion color segment.
  • the excitation light ⁇ B emitted by the excitation light source 101 passes through the collimating lens 111, the area coating filter 107, and the collecting lens 112, and then enters the reflection color segment 2012 of the rotating color wheel 103.
  • the reflection color segment 2012 reflects the excitation light ⁇ B onto the area coating filter 107, and then the excitation light, that is, the blue ⁇ B is reflected by the area coating filter 107 and the mirror 108, and enters the spectroscopic system; the second timing, the excitation light source The emitted excitation light ⁇ B is incident on the fluorescent color segment 2011 of the rotating color wheel 103, and the yellow fluorescent powder on the fluorescent color segment 2011 generates yellow light ⁇ Y under the irradiation of the excitation light ⁇ B , and the yellow light ⁇ Y passes through The area coating filter 107 and the mirror 108 are reflected and enter the beam splitting system; the third timing, the first compensation light ⁇ R2 emitted by the first compensation light source 1021 and the second compensation light ⁇ G2 emitted by the second compensation light source 1022 are incident on the rotation
  • the second region 202 of the color wheel 103 is transmitted by the second region 202 and then incident on the region coating filter 107, and then the first compensation light, that is
  • the light source system in this embodiment further includes a controller for controlling the excitation light source 101.
  • the first timing and the second timing are turned on, and at the third timing is turned off, the control compensation light source 102 is turned on at the third timing, and turned off at the first timing and the second timing.
  • the red ⁇ R1 and the red ⁇ R2 can increase the color gamut of the red light after mixing in time series.
  • the cyan ⁇ G2 and the green ⁇ G1 can be mixed in time series and can be increased.
  • the color gamut of the green light makes the synthesized projected image more in line with the DCI (Digital Copyright Identifier) standard and the REC.709 standard, and can correct the color coordinates to DCI for different projectors. Standard and REC.709 standard green color coordinates and red light color coordinates, so that the color gamut of different projection systems is consistent.
  • the projected image is combined with the light of different colors, so that the compensation light does not need to be irradiated on the phosphor but is directly transmitted, thereby reducing the color gamut of the projected image. It compensates for the scattering loss of light and improves the utilization of compensation light.
  • the present embodiment provides a light source system.
  • the light source system in this embodiment is substantially the same as the light source system provided in the above embodiment, and the difference is that the rotating color wheel 403 in this embodiment is as shown in FIG. Illustrated, including a first region 404 and a second region 405, the first region 404 includes a fluorescent color segment 4041 and a transparent color segment 4042, and the first timed fluorescent color segment 4041
  • the yellow light is generated by the excitation light
  • the second timing transparent color segment 4042 transmits the excitation light and the first compensation light
  • the second timing transparent color segment 4042 transmits the excitation light and the second compensation light
  • the third timing second region 405 transmits the first compensation light and the second compensation light.
  • the fluorescent color segment 4041 is a color segment having a yellow phosphor
  • the transparent color segment 4042 and the second region 405 are transmissive diffusion color segments.
  • the light source system in this embodiment further includes at least one dichroic mirror such as dichroic mirrors 114 and 115.
  • the dichroic mirror 114 is disposed between the compensation light source 102 and the rotating color wheel 403 for transmitting the compensation light to reflect the excitation light, and the dichroic mirror 115 It is used to transmit and compensate the light and to receive the excitation light.
  • the excitation light ⁇ B emitted by the excitation light source 101 is sequentially incident on the fluorescent color section 4041 of the rotating color wheel 403 after passing through the collimating lens 111, the area coating filter 107, and the collecting lens 112.
  • the yellow phosphor on the fluorescent color section 4041 generates yellow light ⁇ Y under the illumination of the excitation light ⁇ B , and the yellow light ⁇ Y is reflected by the area coating filter 107 and the mirror 108 and enters the spectroscopic system;
  • the second timing excites
  • the excitation light ⁇ B emitted from the light source 101 is incident on the transparent color segment 4042 of the rotating color wheel 403, and the excitation light, that is, the blue light ⁇ B is transmitted through the rotating color wheel 403, is reflected by the dichroic mirrors 114 and 115 into the spectroscopic system, and simultaneously
  • the first compensation light ⁇ R2 emitted by the first compensation light source 1021 is transmitted through the dichroic mirror 114 and then incident on the transparent color segment 4042 of the rotating color wheel 403.
  • the first compensation light ⁇ R2 is transmitted through the rotation. After the color wheel 403 is reflected by the area coating filter 107 and the mirror 108, it enters the beam splitting system; the third timing, the first compensation light ⁇ R2 emitted by the first compensation light source 1021 and the second compensation emitted by the second compensation light source 1022 Light ⁇ G2 is incident on The second region 405 of the rotating color wheel 403 is transmitted by the second region 405 and then incident on the region coating filter 107, and then the first compensation light, that is, the red light ⁇ R2 and the second compensation light, the cyan light ⁇ G2, pass through.
  • the regional coating filter 107 and the mirror 108 are reflected and enter the spectroscopic system, so that the spectroscopic system divides the light of different colors into different optical paths, so that different light modulators modulate the light of different colors for the modulated light synthesis. Project an image.
  • the light source system in this embodiment further includes a controller for controlling the excitation light source 101 to be always turned on or controlling the excitation light source.
  • 101 is turned on at the first timing and the second timing, and is turned off at the third timing, and controls the second compensation light source 1022 to be turned on at the third timing, turned off at the first timing and the second timing, and controls the first compensation light source 1021
  • the second timing and the third timing are turned on, and are turned off at the first timing.
  • the controller is configured to control the excitation source 101 to be turned on or to control the excitation source 101.
  • the first timing and the second timing are turned on, and the third timing is turned off
  • the first compensation light source 1021 is controlled to be turned on at the third timing, and turned off at the first timing and the second timing, and the second compensation light source 1022 is controlled.
  • the second timing and the third timing are turned on, and are turned off at the first timing.
  • the light source system provided by the embodiment compensates the color gamut of the red light by the first compensation light, compensates the color gamut of the green light by the second compensation light, and the compensation light does not need to be irradiated on the phosphor but is directly transmitted, thereby Correcting the color gamut of the projected image reduces the scattering loss of the compensated light and improves the utilization of the compensated light.
  • the projection system includes an excitation light source 101 and a compensation light source 102.
  • the excitation light source 101 preferably has an emission wavelength of 445 nm
  • the compensation light source 102 emitting compensation light at least at a third timing
  • rotating the color wheel 103 Include at least a first region and a second region, the first region sequentially generating at least two different colors of light under illumination of the excitation light at a first timing and a second timing, at least at a third timing, the second region being used Transmitting compensation light to combine compensation light with different colors of light to project a projected image; spectroscopic system
  • the light for transmitting the light of different colors is divided into the light transmitted along the first optical path and the light transmitted along the second optical path, and the compensation light is
  • the excitation light source 101 and the compensation light source 102 are respectively disposed on the rotating color wheel 103.
  • the projection system further includes at least one zone coating filter, preferably including a zone coating filter 107 and a mirror 108, the zone coating filter 107 being disposed on the excitation source 101
  • the laser and the compensation light are reflected to the mirror 108, and the mirror 108 is used to reflect the excitation light, the laser light and the compensation light to the spectroscopic system 104.
  • the projection system further includes a collimating lens 109 and a collecting lens 110 which are sequentially disposed between the compensating light source 102 and the rotating color wheel 103, and is disposed in the area coating filter 107.
  • the compensation light source 102 includes a first compensation light source 1021 and a second compensation light source 1022, and the first compensation light source 1021 is used for transmitting the first compensation light, and the second compensation light source 1022 is for emitting the second compensation light.
  • the first compensation light is red light having a main wavelength of 638 nm
  • the second compensation light is a main wavelength. Cyan light of 520 nm, however, the present invention is not limited thereto, as long as the spectral range of the compensated light partially overlaps with the spectral range of the light of the above different colors.
  • the first compensation light source 1021 and the second compensation light source 1022 is preferably a semiconductor laser or a light emitting diode.
  • the rotating color wheel 103 includes a first area 201 and a second area 202.
  • the first region 201 includes a fluorescent color segment 2011 and a reflective color segment 2012
  • the first time-series reflection color segment 2012 reflects the excitation light
  • the second timed fluorescent color segment 2011 Yellow light is generated under illumination of the excitation light
  • the second timing second region 202 transmits the first compensation light and the second compensation light.
  • the fluorescent color segment 2011 is a color segment with a yellow fluorescent powder
  • the reflective color segment 2012 It is a color segment having a scattering powder
  • the second region 202 is a transmissive diffusion color segment.
  • the excitation light ⁇ B emitted by the excitation light source 101 passes through the collimating lens 111, the area coating filter 107, and the collecting lens 112, and then enters the reflection color segment 2012 of the rotating color wheel 103.
  • the reflection color segment 2012 reflects the excitation light ⁇ B onto the area coating filter 107, and then the excitation light, that is, the blue ⁇ B is reflected by the area coating filter 107 and the mirror 108, and enters the spectroscopic system 104; the second timing excites
  • the excitation light ⁇ B emitted from the light source 101 is incident on the fluorescent color segment 2011 of the rotating color wheel 103, and the yellow fluorescent powder on the fluorescent color segment 2011 generates yellow light ⁇ Y and yellow light ⁇ Y under the irradiation of the excitation light ⁇ B .
  • the beam splitting system 104 After being reflected by the area coating filter 107 and the mirror 108, the beam splitting system 104 is entered; the third timing, the first compensation light ⁇ R2 emitted by the first compensation light source 1021 and the second compensation light ⁇ G2 emitted by the second compensation light source 1022 are incident.
  • the first compensation light that is, the red light ⁇ R2 and the second compensation light
  • the spectroscopic system 104 causes the reflected excitation light, that is, the blue ⁇ B , to be transmitted along the second optical path, so that the second optical modulator 106 modulates the blue ⁇ B , since the first optical modulator 105 is idle at the first timing. Therefore, the first light modulator 105 can be grounded at the first timing.
  • the decoder DVI decodes the source signal and outputs the RGB signal of each frame image for processing by the first light modulator 105.
  • the DDP1 and the digital micromirror device DMD1 and the processor DDP2 of the second light modulator 106 and the digital micromirror device DMD2 modulate the light of the corresponding color emitted by the light source; in the second timing, the beam splitting system 104 divides the yellow light ⁇ Y into The red light ⁇ R1 transmitted by the first optical path and the green light ⁇ G1 transmitted by the second optical path are such that the first optical modulator 105 modulates the red ⁇ R1 and the second optical modulator 106 modulates the green ⁇ G1 ; In a third timing, the spectroscopic system 104 transmits the first compensation light, that is, the red light ⁇ R2 along the first optical path, so that the second compensation light, the cyan ⁇ G2 , is transmitted along the second optical path, so that the first optical modulator 105 is paired with red light.
  • ⁇ R2 modulated second optical modulation 106 pairs of modulating cyan light ⁇ G2, so that the modulated blue light ⁇ B, red ⁇ R1, green ⁇ G1, red ⁇ R2, cyan light ⁇ G2 and the composite image projected on a screen through a projection lens 113.
  • the projection system in this embodiment further includes a controller for controlling the excitation light source 101.
  • the first timing and the second timing are turned on, and at the third timing is turned off, the control compensation light source 102 is turned on at the third timing, and turned off at the first timing and the second timing.
  • the excitation light source 101 and the compensation light source 102 The breaking timing, the timing of each color segment of the rotating color wheel 103, and the modulation timing of the first optical modulator 105 and the second optical modulator 106 are as shown in FIG.
  • red light ⁇ R1 and the red light ⁇ R2 are mixed in time series, and in the case of giving the same signal to the first light modulator 105, the first light modulator 105 will have red light ⁇ R1 and red light ⁇ .
  • R2 performs synchronous gray-scale modulation to increase the color gamut of red light.
  • cyan ⁇ G2 and green ⁇ G1 are mixed in time series, and in the case of giving the same signal to the second optical modulator 106, The two-light modulator 106 performs gray scale modulation on the cyan ⁇ G2 and the green ⁇ G1 to increase the color gamut of the green light, so that the synthesized projected image is more in line with the DCI (Digital Copyright Identifier).
  • DCI Digital Copyright Identifier
  • the color gamut of the projected image LP after the compensation light correction in the present invention is as shown in FIG.
  • the projection system provided by the embodiment compensates the light and the projection image of the light of different colors after the second region is compensated, so that the compensation light does not need to be irradiated on the phosphor but is directly transmitted, thereby reducing the color gamut of the projection image. It compensates for the scattering loss of light and improves the utilization of compensation light.
  • the present embodiment provides a projection system.
  • the projection system in this embodiment is substantially the same as the projection system provided in the above embodiment, and the difference is that the rotating color wheel 403 in this embodiment is as shown in FIG. 3.
  • the yellow light is generated by the excitation light
  • the second timing transparent color segment 4042 transmits the excitation light and the first compensation light
  • the second timing transparent color segment 4042 transmits the excitation light and the second compensation light
  • the third timing second region 405 transmits the first compensation light and the second compensation light.
  • the fluorescent color segment 4041 is a color segment having a yellow phosphor
  • the transparent color segment 4042 and the second region 405 are transmissive diffusion color segments.
  • the projection system in this embodiment further includes at least one dichroic mirror such as dichroic mirrors 114 and 115.
  • the dichroic mirror 114 is disposed between the compensation light source 102 and the rotating color wheel 403 for transmitting the compensation light to reflect the excitation light, and the dichroic mirror 115 It is used to transmit and compensate the light and to receive the excitation light.
  • the excitation light ⁇ B emitted by the excitation light source 101 is sequentially incident on the fluorescent color section 4041 of the rotating color wheel 403 after passing through the collimating lens 111, the area coating filter 107, and the collecting lens 112.
  • the yellow phosphor on the fluorescent color section 4041 generates yellow light ⁇ Y under the irradiation of the excitation light ⁇ B , and the yellow light ⁇ Y is reflected by the area coating filter 107 and the mirror 108 and enters the spectroscopic system 104;
  • the second timing The excitation light ⁇ B emitted from the excitation light source 101 is incident on the transparent color segment 4042 of the rotating color wheel 403.
  • the excitation light that is, the blue light ⁇ B is transmitted through the rotating color wheel 403, is reflected by the dichroic mirrors 114 and 115 into the spectroscopic system 104.
  • the first compensation light ⁇ R2 emitted by the first compensation light source 1021 is transmitted through the dichroic mirror 114 and then incident on the transparent color segment 4042 of the rotating color wheel 403, and the first compensation light ⁇ R2 is transparent.
  • the first compensation light ⁇ R2 emitted by the first compensation light source 1021 and the second compensation light source 1022 are emitted.
  • Second compensation light ⁇ G2 is incident on the second region 405 of the rotating color wheel 403, is transmitted by the second region 405, and is incident on the region coating filter 107, and then the first compensation light is red ⁇ R2 and the second compensation light is cyan light.
  • ⁇ G2 is reflected by the area coating filter 107 and the mirror 108 and enters the spectroscopic system 104;
  • the spectroscopic system 104 divides the yellow light ⁇ Y into a red light ⁇ R1 transmitted along the first optical path and a green light ⁇ G1 transmitted along the second optical path to cause the first light modulator 105 to modulate the red light ⁇ R1 .
  • the second light modulator 106 modulates the green light ⁇ G1 ; in the second timing, the light splitting system 104 transmits the first compensation light, that is, the red light ⁇ R2 along the first optical path, so that the reflected excitation light, that is, the blue light ⁇ B is along the second The optical path is transmitted such that the first optical modulator 105 modulates the first compensation light, that is, the red light ⁇ R2 , so that the second light modulator 106 modulates the blue light ⁇ B ; and the third timing, the light splitting system 104 makes the first compensation light That is, the red light ⁇ R2 is transmitted along the first optical path, so that the second compensation light, that is, the cyan light ⁇ G2 is transmitted along the second optical path, so that the first light modulator 105 modulates the red light ⁇ R2 , and the second light modulator 106 pairs
  • the cyan ⁇ G2 is modulated such that the modulated blue ⁇ B , red ⁇ R1 , green ⁇ G1 , red
  • the projection system in this embodiment further includes a controller for controlling the excitation light source 101.
  • a controller for controlling the excitation light source 101 Turning on the first timing and the second timing, turning off at the third timing, controlling the second compensation light source to be turned on at the third timing, turning off at the first timing and the second timing, and controlling the first compensation light source at the second timing and the third timing Turned on, turned off at the first timing.
  • the excitation light source 101 The breaking timing of the first compensation light source 1021 and the second compensation light source 1022, the timing of each color segment of the rotating color wheel 103, and the first light modulator 105 and the second light modulator 106 The modulation timing is shown in Figure 11.
  • the controller is further configured to control the excitation light source 101 to be always turned on.
  • the spectroscopic system 104 divides the yellow light ⁇ Y into the green light ⁇ G1 transmitted along the first optical path at the first timing.
  • the first compensation light that is, the red light ⁇ R2 is transmitted along the second optical path at the second timing, so that the transmitted excitation light ⁇ B is transmitted along the first optical path and the third optical path; at a third timing, the first compensation light, that is, the red light ⁇ R2 is transmitted along the second optical path, so that the second compensation light, that is, the cyan light ⁇ G2 is transmitted along the first optical path, so that The transmitted excitation light ⁇ B is transmitted along the third optical path, and the optical modulation system includes a first light modulator 105, a second light modulator 106, and a third light modulator 107, the first light modulator 105 facing the first light path The transmitted light is modulated, the second optical modulator 106 modulates the light transmitted by the second optical path, and the third optical modulator 107 modulates the light transmitted by the third optical path.
  • the modulation timing diagram is as shown in FIG.
  • the controller is for controlling the excitation source 101
  • the first timing and the second timing are turned on, and the third timing is turned off
  • the first compensation light source 1021 is controlled to be turned on at the third timing, and turned off at the first timing and the second timing
  • the second compensation light source 1022 is controlled.
  • the second timing and the third timing are turned on, and are turned off at the first timing.
  • the breaking timing of the excitation light source 101, the first compensation light source 1021, and the second compensation light source 1022, and the rotating color wheel 103 The timing of each color segment and the modulation timing of the first optical modulator 105 and the second optical modulator 106 are as shown in FIG.
  • the controller is further configured to control the excitation light source 101 to be always turned on.
  • the spectroscopic system divides the yellow light ⁇ Y into red along the first optical path at a first timing.
  • the transmitted excitation light ⁇ B is transmitted along the first optical path and the third optical path, so that
  • the second compensation light, that is, the cyan light ⁇ G2 is transmitted along the second optical path;
  • the first compensation light that is, the red light ⁇ R2 is transmitted along the first optical path, so that the second compensation light, the cyan ⁇ G2 , is transmitted along the second optical path.
  • the transmitted excitation light ⁇ B is transmitted along the third optical path.
  • the light modulation system includes a first light modulator 105, a second light modulator 106, and a third light modulator 107, the first light modulator 105 modulating light transmitted by the first optical path, and the second light modulator 106 is paired The light transmitted by the second optical path is modulated, and the third optical modulator 107 modulates the light transmitted by the third optical path.
  • the modulation timing chart is as shown in FIG.
  • the excitation light ⁇ B emitted by the excitation light source 101 is sequentially incident on the fluorescent color section 4041 of the rotating color wheel 403 through the collimating lens 111, the area coating filter 107 and the collecting lens 112, and the fluorescent color section 4041 is on the fluorescent color section 4041.
  • the yellow phosphor emits yellow ⁇ Y under the illumination of the excitation light ⁇ B , and the yellow ⁇ Y is reflected by the area coating filter 107 and the mirror 108 and enters the spectroscopic system 104; the second timing is emitted by the excitation source 101
  • the excitation light ⁇ B is incident on the transparent color segment 4042 of the rotating color wheel 403, and the excitation light, that is, the blue light ⁇ B is transmitted through the rotating color wheel 403, is reflected by the dichroic mirrors 114 and 115 into the spectroscopic system 104, and at the same time,
  • the second compensation light ⁇ G2 emitted by the second compensation light source 1022 is transmitted through the dichroic mirror 114 and then incident on the transparent color segment 4042 of the rotating color wheel 403.
  • the second compensation light ⁇ G2 is transmitted through the rotating color wheel 403. After being reflected by the area coating filter 107 and the mirror 108, the spectroscopic system 104 is entered; the third timing, the first compensation light ⁇ R2 emitted by the first compensation light source 1021 and the second compensation light ⁇ emitted by the second compensation light source 1022 G2 is incident to the rotating The second region 403 on the wheel 405, the second region 405 is incident to the transmissive film filter 107, i.e. light and the first compensation and the second compensation ⁇ R2 red light i.e. light cyan ⁇ G2 through the coating region The filter 107 and the mirror 108 are reflected and enter the spectroscopic system 104;
  • the spectroscopic system 104 divides the yellow light ⁇ Y into a red light ⁇ R1 transmitted along the first optical path and a green light ⁇ G1 transmitted along the second optical path to cause the first light modulator 105 to modulate the red light ⁇ R1 .
  • the second light modulator 106 modulates the green light ⁇ G1 ; in the second timing, the light splitting system 104 transmits the reflected excitation light, that is, the blue light ⁇ B along the first optical path, so that the second compensation light, that is, the cyan light ⁇ G2 is along the second The optical path is transmitted such that the first optical modulator 105 modulates the blue light ⁇ B to cause the second optical modulator 106 to modulate the cyan ⁇ G2 ; and in the third timing, the optical splitting system 104 causes the first compensation light to be the red ⁇ R2 Transmitted along the first optical path, the second compensation light, that is, the cyan ⁇ G2 is transmitted along the first optical path, so that the first optical modulator 105 modulates the red ⁇ R2 , and the second optical modulator 106 performs the cyan ⁇ G2 .
  • the modulation is such that the modulated blue light ⁇ B , red light ⁇ R1 , green light ⁇ G1 , red light ⁇ R2 , and cyan light ⁇ G2 are combined and projected onto the screen through the projection lens 113 .
  • the control modes of the first light modulator 105 and the second light modulator 106 are as shown in FIG.
  • the projection system provided by the embodiment compensates the color gamut of the red light by the first compensation light, compensates the color gamut of the green light by the second compensation light, and the compensation light does not need to be irradiated on the phosphor but is directly transmitted, thereby Correcting the color gamut of the projected image reduces the scattering loss of the compensated light and improves the utilization of the compensated light.

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Abstract

一种光源系统和投影系统，包括：至少在第一时序和第二时序发射激发光的激发光源(101)；至少在第三时序发射补偿光的补偿光源(102)，所述补偿光源(102)发射的补偿光至少包括一种颜色的激光；旋转色轮(103)，所述旋转色轮(103)至少包括第一区域(201)和第二区域(202)，在第一时序和第二时序，所述第一区域(201)在所述激发光的照射下时序地产生至少两种不同颜色的光，至少在第三时序，所述第二区域(202)用于透射所述补偿光；其中，所述至少两种不同颜色的光包括至少一种宽谱的荧光，所述至少一种颜色的激光用于对所述荧光或对所述荧光分出的光进行补偿，从而使得补偿光不需照射在荧光粉上而是直接透射，减少了补偿光的散射损失，提高了补偿光的利用率。

Description

光源系统和投影系统 技术领域
本发明涉及投影仪技术领域，更具体地说，涉及一种光源系统和投影系统。
背景技术
DLP （ Digital Light Procession ，数字光处理）投影技术是一种通过 DMD （ Digital Micro mirror Device ，数字微镜器件）来完成可视数字信息显示的技术。现有的 DLP 投影系统一般采用单片式 DMD 或三片式 DMD ，但是，由于双片式 DMD 投影系统具有兼顾光效与成本的优点，因此，双片式 DMD 投影系统也正在受到更为广泛地推广。
技术问题
现有的双片式 DMD 投影系统，大多采用蓝激光激发黄光荧光粉来产生时序的蓝光和黄光，再通过分光合光棱镜将黄光分成绿光和红光，从而构成投影所需要的红绿蓝三基色光。但是，由于绿光和红光为黄光分出的光，因此，红光和绿光的色坐标距离色域标准具有一定的差距。
基于此，现有技术中提出了一种将激光光源作为补充光源应用到双片式 DMD 投影系统中的方式，以使得绿光和红光的色坐标更接近色域标准。例如，当采用红激光作为补偿光时，将红激光和蓝激光一起入射到黄色荧光粉上，由于红激光不会激发黄色荧光粉，因此，可以得到蓝光、黄光和红激光的混合光，这样就能通过红激光对红光的色域进行补偿，使得红光的色坐标更接近色域标准。但是，当红激光等补偿光入射到荧光粉上时，补偿光会受到荧光粉的散射损失的影响，导致补偿光的利用效率较低。
 技术解决方案
有鉴于此，本发明提供了一种光源系统和投影系统，以解决现有技术中补偿光的利用效率较低的问题。
为实现上述目的，本发明提供如下技术方案：一种光源系统，包括：
至少在第一时序和第二时序发射激发光的激发光源；
至少在第三时序发射补偿光的补偿光源，所述补偿光源发射的补偿光至少包括一种颜色的激光；
旋转色轮，所述旋转色轮至少包括第一区域和第二区域，在第一时序和第二时序，所述第一区域在所述激发光的照射下时序地产生至少两种不同颜色的光，至少在第三时序，所述第二区域用于透射所述补偿光；
其中，所述至少两种不同颜色的光包括至少一种宽谱的荧光，所述至少一种颜色的激光用于对所述荧光或对所述荧光分出的光进行补偿。
优选的，所述补偿光的波谱范围与所述不同颜色的光的波谱范围存在部分重叠。
优选的，所述补偿光源包括第一补偿光源和第二补偿光源，所述第一补偿光源用于发射第一补偿光，所述第二补偿光源用于发射第二补偿光。
优选的，所述投影系统还包括控制器，所述控制器用于控制所述激发光源在第一时序和第二时序开启、在第三时序关闭，控制所述补偿光源在第三时序开启、在第一时序和第二时序关闭。
优选的，所述第一区域包括荧光色段和反射色段，第一时序所述反射色段反射所述激发光，第二时序所述荧光色段在所述激发光的照射下产生黄光；第三时序所述第二区域透射所述第一补偿光和第二补偿光。
优选的，所述荧光色段为具有黄光荧光粉的色段；所述反射色段为具有散射粉的色段；所述第二区域为透射式扩散色段。
优选的，当所述激发光源和补偿光源设置在所述旋转色轮的两侧时，所述光源系统还包括至少一个区域镀膜滤光片，所述区域镀膜滤光片设置在所述激发光源和旋转色轮之间，用于反射所述激发光、受激光和补偿光。
优选的，所述光源系统还包括控制器，所述控制器用于控制所述激发光源在第一时序和第二时序开启、在第三时序关闭，或者，控制所述激发光源一直开启；所述控制器还用于控制所述第一补偿光源在第三时序开启、在第一时序和第二时序关闭，控制所述第二补偿光源在第二时序和第三时序开启、在第一时序关闭，或者，所述控制器还用于控制所述第二补偿光源在第三时序开启、在第一时序和第二时序关闭，控制所述第一补偿光源在第二时序和第三时序开启、在第一时序关闭。
优选的，当所述激发光源和补偿光源设置在所述旋转色轮的两侧时，所述光源系统还包括至少一个区域镀膜滤光片和一个二向色镜，所述区域镀膜滤光片设置在所述激发光源和旋转色轮之间，用于反射所述受激光和补偿光，所述二向色镜设置在所述补偿光源和旋转色轮之间，用于透射所述补偿光反射所述激发光。
优选的，所述第一区域包括荧光色段和透明色段，第一时序所述荧光色段在所述激发光的照射下产生黄光，第二时序所述透明色段透射所述激发光和第一补偿光，或者，第二时序所述透明色段透射所述激发光和第二补偿光；第三时序所述第二区域透射所述第一补偿光和第二补偿光。
优选的，所述荧光色段为具有黄光荧光粉的色段；所述透明色段和所述第二区域为透射式扩散色段。
优选的，所述激发光为蓝光，所述第一补偿光为红光，所述第二补偿光为青绿光。
一种投影系统，包括：
上述任一项所述的光源系统；
将所述不同颜色的光分成沿沿不同光路传输的光，并使所述补偿光与对应颜色的光沿同一光路传输的分光系统；
包括多个光调制器的光调制系统，所述光调制器与所述光路一一对应，以对所述光路传输的光进行调制。
优选的，当所述第一区域包括荧光色段和反射色段时，所述分光系统在第一时序使所述反射后的激发光沿第二光路传输；在第二时序将所述黄光分成沿第一光路传输的红光和沿第二光路传输的绿光；在第三时序使所述第一补偿光沿第一光路传输，使所述第二补偿光沿第二光路传输。
优选的，当所述第一区域包括荧光色段和透射色段，且所述第一补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的绿光和沿第二光路传输的红光；在第二时序使所述第一补偿光沿第二光路传输，使所述透射后的激发光沿第一光路传输；在第三时序使所述第一补偿光沿第二光路传输，使所述第二补偿光沿第一光路传输。
优选的，当所述第一区域包括荧光色段和透射色段，且所述第二补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的红光和沿第二光路传输的绿光；在第二时序使所述透射后的激发光沿第一光路传输，使所述第二补偿光沿第二光路传输；在第三时序使所述第一补偿光沿第一光路传输，使所述第二补偿光沿第二光路传输。
优选的，所述光调制系统包括第一光调制器和第二光调制器，所述第一光调制器对所述第一光路传输的光进行调制，所述第二光调制器对所述第二光路传输的光进行调制。
优选的，当所述第一区域包括荧光色段和透射色段，且所述第一补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的绿光、沿第二光路传输的红光和沿第三光路传输的激发光；在第二时序使所述第一补偿光沿第二光路传输，使所述透射后的激发光沿第一光路和第三光路传输；在第三时序使所述第一补偿光沿第二光路传输，使所述第二补偿光沿第一光路传输，使所述透射后的激发光沿第三光路传输。
优选的，当所述第一区域包括荧光色段和透射色段，且所述第二补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的红光、沿第二光路传输的绿光和沿第三光路传输的激发光；在第二时序使所述透射后的激发光沿第一光路和第三光路传输，使所述第二补偿光沿第二光路传输；在第三时序使所述第一补偿光沿第一光路传输，使所述第二补偿光沿第二光路传输，使所述透射后的激发光沿第三光路传输。
优选的，所述光调制系统包括第一光调制器、第二光调制器和第三光调制器，所述第一光调制器对所述第一光路传输的光进行调制，所述第二光调制器对所述第二光路传输的光进行调制，所述第三光调制器对所述第三光路传输的光进行调制。
 有益效果
与现有技术相比，本发明所提供的技术方案具有以下优点：
本发明所提供的光源系统和投影系统，旋转色轮包括第一区域和第二区域，第一区域在所述激发光的照射下时序地产生至少两种不同颜色的光，第二区域用于透射所述补偿光，以使所述补偿光与所述不同颜色的光合成投影图像，从而使得补偿光不需照射在荧光粉上而是直接透射，减少了补偿光的散射损失，提高了补偿光的利用率。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图 1 为本发明实施例一提供的一种光源系统的结构示意图；
图 2 为本发明实施例一提供的一种旋转色轮的结构示意图；
图 3 为本发明实施例二提供的一种光源系统的结构示意图；
图 4 为本发明实施例二提供的一种旋转色轮的结构示意图；
图 5 为本发明实施例三提供的一种投影系统的结构示意图；
图 6 为本发明实施例三提供的第一光调制器和第二光调制器的控制原理图；
图 7 为本发明实施例三提供的激发光源、补偿光源、旋转色轮、第一光调制器和第二光调制器的时序图；
图 8 为本发明实施例三提供的投影图像的色域图；
图 9 为本发明实施例四提供的一种投影系统的结构示意图；
图 10 为本发明实施例四提供的第一光调制器和第二光调制器的一种控制原理图；
图 11 为本发明实施例四提供的激发光源、补偿光源、旋转色轮、第一光调制器和第二光调制器的一种时序图；
图 12 为本发明实施例四提供的激发光源、补偿光源、旋转色轮、第一光调制器、第二光调制器和第三光调制器的一种时序图；
图 13 为本发明实施例四提供的激发光源、补偿光源、旋转色轮、第一光调制器、第二光调制器和第三光调制器的另一种时序图；
图 14 为本发明实施例四提供的激发光源、补偿光源、旋转色轮、第一光调制器和第二光调制器的另一种时序图；
图 15 为本发明实施例四提供的第一光调制器和第二光调制器的另一种控制原理图。
 本发明的最佳实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
本实施例提供了一种光源系统，如图 1 所示，该光源系统包括激发光源 101 、补偿光源 102 和旋转色轮 103 ，其中，激发光源 101 优选为发射波长为 445nm 蓝光的半导体激光器，该激发光源 101 用于至少在第一时序和第二时序发射激发光，补偿光源 102 至少在第三时序发射补偿光，所述补偿光至少包括一种颜色的激光，旋转色轮 103 至少包括第一区域和第二区域，在第一时序和第二时序，第一区域在激发光的照射下时序地产生至少两种不同颜色的光，至少在第三时序，第二区域用于透射补偿光，其中，所述至少两种不同颜色的光包括至少一种宽谱的荧光，光谱范围在 480-700nm ，所述至少一种颜色的激光用于对所述荧光或对所述荧光分出的光进行补偿。如图 1 所示，激发光源 101 和补偿光源 102 分别设置在旋转色轮 103 的两侧，且该光源系统还包括至少一个区域镀膜滤光片，优选包括区域镀膜滤光片 107 和反射镜 108 ，该区域镀膜滤光片 107 设置在激发光源 101 和旋转色轮 103 之间，用于将激发光、受激光和补偿光反射至反射镜 108 ，反射镜 108 用于反射激发光、受激光和补偿光。此外，该光源系统还包括依次设置在补偿光源 102 和旋转色轮 103 之间的准直透镜 109 和收集透镜 110 ，以及设置在区域镀膜滤光片 107 和激发光源 101 之间的准直透镜 111 、设置在区域镀膜滤光片 107 和旋转色轮 103 之间的收集透镜 112 。
本实施例中，补偿光源 102 包括第一补偿光源 1021 和第二补偿光源 1022 ，第一补偿光源 1021 用于发射第一补偿光，第二补偿光源 1022 用于发射第二补偿光，本实施例中的第一补偿光为主波长为 638nm 的红光，第二补偿光为主波长为 520nm 的青绿光，但是，本发明并不仅限于此，只要补偿光的波谱范围与上述不同颜色的光的波谱范围存在部分重叠即可。其中，第一补偿光源 1021 和第二补偿光源 1022 优选为半导体激光器或发光二极管。
本实施例中，如图 2 所示，旋转色轮 103 包括第一区域 201 和第二区域 202 ，其中，第一区域 201 包括荧光色段 2011 和反射色段 2012 ，第一时序反射色段 2012 反射激发光，第二时序荧光色段 2011 在激发光的照射下产生黄光；第三时序第二区域 202 透射第一补偿光和第二补偿光。其中，荧光色段 2011 为具有黄光荧光粉的色段；反射色段 2012 为具有散射粉的色段；第二区域 202 为透射式扩散色段。
本实施例中，第一时序，激发光源 101 发射的激发光λ B 依次通过准直透镜 111 、区域镀膜滤光片 107 和收集透镜 112 后入射到旋转色轮 103 的反射色段 2012 上，该反射色段 2012 将激发光λ B 反射至区域镀膜滤光片 107 上，然后该激发光即蓝光λ B 被区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统；第二时序，激发光源 101 发射的激发光λ B 入射到旋转色轮 103 的荧光色段 2011 上，该荧光色段 2011 上的黄光荧光粉在激发光λ B 的照射下产生黄光λ Y ，黄光λ Y 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统；第三时序，第一补偿光源 1021 发射的第一补偿光λ R2 和第二补偿光源 1022 发射的第二补偿光λ G2 入射到旋转色轮 103 的第二区域 202 上，被第二区域 202 透射后入射到区域镀膜滤光片 107 上，然后该第一补偿光即红光λ R2 和第二补偿光即青绿光λ G2 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统，以使分光系统将不同颜色的光分成不同的光路，以便不同的光调制器对不同的颜色的光进行调制，以便调制后的光合成投影图像。
其中，本实施例中的光源系统还包括控制器，该控制器用于控制激发光源 101 在第一时序和第二时序开启、在第三时序关闭，控制补偿光源 102 在第三时序开启、在第一时序和第二时序关闭。
由此可知，红光λ R1 和红光λ R2 会在时序上混合后，可以增大红光的色域，同样，青绿光λ G2 和绿光λ G1 会在时序上混合后，可以增大绿光的色域，使得合成的投影图像更符合 DCI （ Digital Copyright Identifier ，数字版权唯一标识符体系）标准和 REC.709 标准，并且，对于不同的投影仪，都可以将其色坐标校正到 DCI 标准和 REC.709 标准的绿光色坐标和红光色坐标附近，使得不同投影系统的色域达到一致。
本实施例提供的光源系统，补偿光透射第二区域后与不同颜色的光合成投影图像，使得补偿光不需照射在荧光粉上而是直接透射，从而在校正投影图像色域的基础上，减少了补偿光的散射损失，提高了补偿光的利用率。
实施例二
本实施例提供了一种光源系统，本实施例中的光源系统与上述实施例提供的光源系统结构大致相同，其不同之处在于，本实施例中的旋转色轮 403 如图 3 所示，包括第一区域 404 和第二区域 405 ，第一区域 404 包括荧光色段 4041 和透明色段 4042 ，第一时序荧光色段 4041 在激发光的照射下产生黄光，第二时序透明色段 4042 透射激发光和第一补偿光，或者，第二时序透明色段 4042 透射激发光和第二补偿光；第三时序第二区域 405 透射第一补偿光和第二补偿光。具体地，荧光色段 4041 为具有黄光荧光粉的色段；透明色段 4042 和第二区域 405 为透射式扩散色段。
如图 4 所示，本实施例中的光源系统还包括至少一个二向色镜，如二向色镜 114 和 115 ，其中，二向色镜 114 设置在补偿光源 102 和旋转色轮 403 之间，用于透射补偿光反射激发光，二向色镜 115 用于透射补偿光和受激光，反射激发光。
本实施例中，第一时序，激发光源 101 发射的激发光λ B 依次通过准直透镜 111 、区域镀膜滤光片 107 和收集透镜 112 后入射到旋转色轮 403 的荧光色段 4041 上，该荧光色段 4041 上的黄光荧光粉在激发光λ B 的照射下产生黄光λ Y ，黄光λ Y 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统；第二时序，激发光源 101 发射的激发光λ B 入射到旋转色轮 403 的透明色段 4042 上，该激发光即蓝光λ B 透过旋转色轮 403 后，被二向色镜 114 和 115 反射进入分光系统，同时，在第二时序，第一补偿光源 1021 发射的第一补偿光λ R2 透过二向色镜 114 后入射到旋转色轮 403 的透明色段 4042 上，该第一补偿光λ R2 透过旋转色轮 403 后，被区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统；第三时序，第一补偿光源 1021 发射的第一补偿光λ R2 和第二补偿光源 1022 发射的第二补偿光λ G2 入射到旋转色轮 403 的第二区域 405 上，被第二区域 405 透射后入射到区域镀膜滤光片 107 上，然后该第一补偿光即红光λ R2 和第二补偿光即青绿光λ G2 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统，以使分光系统将不同颜色的光分成不同的光路，以便不同的光调制器对不同的颜色的光进行调制，以便调制后的光合成投影图像。
其中，本实施例中的光源系统还包括控制器，该控制器用于控制激发光源 101 一直开启或控制激发光源 101 在第一时序和第二时序开启、在第三时序关闭，控制第二补偿光源 1022 在第三时序开启、在第一时序和第二时序关闭，控制第一补偿光源 1021 在第二时序和第三时序开启、在第一时序关闭。
在本发明的其他实施例中，控制器用于控制激发光源 101 一直开启或控制激发光源 101 在第一时序和第二时序开启、在第三时序关闭，控制第一补偿光源 1021 在第三时序开启、在第一时序和第二时序关闭，控制第二补偿光源 1022 在第二时序和第三时序开启、在第一时序关闭。
本实施例提供的光源系统，通过第一补偿光补偿红光的色域，通过第二补偿光补偿绿光的色域，并且，补偿光不需照射在荧光粉上而是直接透射，从而在校正投影图像色域的基础上，减少了补偿光的散射损失，提高了补偿光的利用率。
实施例三
本实施例提供了一种投影系统，如图 5 所示，该投影系统包括激发光源 101 、补偿光源 102 、旋转色轮 103 、分光系统 104 、第一光调制器 105 和第二光调制器 106 ，其中，激发光源 101 优选为发射波长为 445nm 蓝光的半导体激光器，该激发光源 101 用于至少在第一时序和第二时序发射激发光，补偿光源 102 至少在第三时序发射补偿光，旋转色轮 103 至少包括第一区域和第二区域，在第一时序和第二时序，第一区域在激发光的照射下时序地产生至少两种不同颜色的光，至少在第三时序，第二区域用于透射补偿光，以使补偿光与不同颜色的光合成投影图像；分光系统 104 用于将不同颜色的光分成沿第一光路传输的光和沿第二光路传输的光，并使补偿光与对应颜色的光沿同一光路传输的；本实施例中光调制系统包括第一光调制器 105 和第二光调制器 106 ，第一光调制器 105 用于对沿第一光路传输的光进行调制；第二光调制器 106 用于对沿第二光路传输的光进行调制。
如图 5 所示，激发光源 101 和补偿光源 102 分别设置在旋转色轮 103 的两侧，且该投影系统还包括至少一个区域镀膜滤光片，优选包括区域镀膜滤光片 107 和反射镜 108 ，该区域镀膜滤光片 107 设置在激发光源 101 和旋转色轮 103 之间，用于将激发光、受激光和补偿光反射至反射镜 108 ，反射镜 108 用于将激发光、受激光和补偿光反射至分光系统 104 。此外，该投影系统还包括依次设置在补偿光源 102 和旋转色轮 103 之间的准直透镜 109 和收集透镜 110 ，以及设置在区域镀膜滤光片 107 和激发光源 101 之间的准直透镜 111 、设置在区域镀膜滤光片 107 和旋转色轮 103 之间的收集透镜 112 。
本实施例中，补偿光源 102 包括第一补偿光源 1021 和第二补偿光源 1022 ，第一补偿光源 1021 用于发射第一补偿光，第二补偿光源 1022 用于发射第二补偿光，本实施例中的第一补偿光为主波长为 638nm 的红光，第二补偿光为主波长为 520nm 的青绿光，但是，本发明并不仅限于此，只要补偿光的波谱范围与上述不同颜色的光的波谱范围存在部分重叠即可。其中，第一补偿光源 1021 和第二补偿光源 1022 优选为半导体激光器或发光二极管。
本实施例中，如图 2 所示，旋转色轮 103 包括第一区域 201 和第二区域 202 ，其中，第一区域 201 包括荧光色段 2011 和反射色段 2012 ，第一时序反射色段 2012 反射激发光，第二时序荧光色段 2011 在激发光的照射下产生黄光；第三时序第二区域 202 透射第一补偿光和第二补偿光。其中，荧光色段 2011 为具有黄光荧光粉的色段；反射色段 2012 为具有散射粉的色段；第二区域 202 为透射式扩散色段。
本实施例中，第一时序，激发光源 101 发射的激发光λ B 依次通过准直透镜 111 、区域镀膜滤光片 107 和收集透镜 112 后入射到旋转色轮 103 的反射色段 2012 上，该反射色段 2012 将激发光λ B 反射至区域镀膜滤光片 107 上，然后该激发光即蓝光λ B 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；第二时序，激发光源 101 发射的激发光λ B 入射到旋转色轮 103 的荧光色段 2011 上，该荧光色段 2011 上的黄光荧光粉在激发光λ B 的照射下产生黄光λ Y ，黄光λ Y 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；第三时序，第一补偿光源 1021 发射的第一补偿光λ R2 和第二补偿光源 1022 发射的第二补偿光λ G2 入射到旋转色轮 103 的第二区域 202 上，被第二区域 202 透射后入射到区域镀膜滤光片 107 上，然后该第一补偿光即红光λ R2 和第二补偿光即青绿光λ G2 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；
第一时序，分光系统 104 使反射后的激发光即蓝光λ B 沿第二光路传输，以使第二光调制器 106 对蓝光λ B 进行调制，由于第一光调制器 105 在第一时序空闲，因此，可以在第一时序将第一光调制器 105 接地，如图 6 所示，解码器 DVI 对源信号进行解码后输出每一帧图像的 RGB 信号，以便第一光调制器 105 的处理器 DDP1 和数字微镜器件 DMD1 和第二光调制器 106 的处理器 DDP2 和数字微镜器件 DMD2 对光源出射的相应颜色的光进行调制；第二时序，分光系统 104 将黄光λ Y 分成沿第一光路传输的红光λ R1 和第二光路传输的绿光λ G1 ，以使第一光调制器 105 对红光λ R1 进行调制，第二光调制器 106 对绿光λ G1 进行调制；第三时序，分光系统 104 使第一补偿光即红光λ R2 沿第一光路传输，使第二补偿光即青绿光λ G2 沿第二光路传输，以使第一光调制器 105 对红光λ R2 进行调制，第二光调制器 106 对青绿光λ G2 进行调制，使得调制后的蓝光λ B 、红光λ R1 、绿光λ G1 、红光λ R2 、青绿光λ G2 合成图像并通过投影镜头 113 投影到屏幕上。
其中，本实施例中的投影系统还包括控制器，该控制器用于控制激发光源 101 在第一时序和第二时序开启、在第三时序关闭，控制补偿光源 102 在第三时序开启、在第一时序和第二时序关闭。其中，激发光源 101 和补偿光源 102 的开断时序、旋转色轮 103 各色段的时序以及第一光调制器 105 和第二光调制器 106 的调制时序如图 7 所示。
由此可知，红光λ R1 和红光λ R2 会在时序上混合，在给到第一光调制器 105 相同信号的情况下，第一光调制器 105 会对红光λ R1 和红光λ R2 进行同步的灰阶调制，以增大红光的色域，同样，青绿光λ G2 和绿光λ G1 会在时序上混合，在给到第二光调制器 106 相同信号的情况下，第二光调制器 106 会对青绿光λ G2 和绿光λ G1 进行同步的灰阶调制，以增大绿光的色域，使得合成的投影图像更符合 DCI （ Digital Copyright Identifier ，数字版权唯一标识符体系）标准和 REC.709 标准，并且，对于不同的投影仪，都可以将其色坐标校正到 DCI 标准和 REC.709 标准的绿光色坐标和红光色坐标附近，使得不同投影系统的色域达到一致。其中，本发明中经过补偿光校正后的投影图像 LP 的色域图如图 8 所示。
本实施例提供的投影系统，补偿光透射第二区域后与不同颜色的光合成投影图像，使得补偿光不需照射在荧光粉上而是直接透射，从而在校正投影图像色域的基础上，减少了补偿光的散射损失，提高了补偿光的利用率。
实施例四
本实施例提供了一种投影系统，本实施例中的投影系统与上述实施例提供的投影系统结构大致相同，其不同之处在于，本实施例中的旋转色轮 403 如图 3 所示，包括第一区域 404 和第二区域 405 ，第一区域 404 包括荧光色段 4041 和透明色段 4042 ，第一时序荧光色段 4041 在激发光的照射下产生黄光，第二时序透明色段 4042 透射激发光和第一补偿光，或者，第二时序透明色段 4042 透射激发光和第二补偿光；第三时序第二区域 405 透射第一补偿光和第二补偿光。具体地，荧光色段 4041 为具有黄光荧光粉的色段；透明色段 4042 和第二区域 405 为透射式扩散色段。
如图 9 所示，本实施例中的投影系统还包括至少一个二向色镜，如二向色镜 114 和 115 ，其中，二向色镜 114 设置在补偿光源 102 和旋转色轮 403 之间，用于透射补偿光反射激发光，二向色镜 115 用于透射补偿光和受激光，反射激发光。
本实施例中，第一时序，激发光源 101 发射的激发光λ B 依次通过准直透镜 111 、区域镀膜滤光片 107 和收集透镜 112 后入射到旋转色轮 403 的荧光色段 4041 上，该荧光色段 4041 上的黄光荧光粉在激发光λ B 的照射下产生黄光λ Y ，黄光λ Y 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；第二时序，激发光源 101 发射的激发光λ B 入射到旋转色轮 403 的透明色段 4042 上，该激发光即蓝光λ B 透过旋转色轮 403 后，被二向色镜 114 和 115 反射进入分光系统 104 ，同时，在第二时序，第一补偿光源 1021 发射的第一补偿光λ R2 透过二向色镜 114 后入射到旋转色轮 403 的透明色段 4042 上，该第一补偿光λ R2 透过旋转色轮 403 后，被区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；第三时序，第一补偿光源 1021 发射的第一补偿光λ R2 和第二补偿光源 1022 发射的第二补偿光λ G2 入射到旋转色轮 403 的第二区域 405 上，被第二区域 405 透射后入射到区域镀膜滤光片 107 上，然后该第一补偿光即红光λ R2 和第二补偿光即青绿光λ G2 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；
第一时序，分光系统 104 将黄光λ Y 分成沿第一光路传输的红光λ R1 和第二光路传输的绿光λ G1 ，以使第一光调制器 105 对红光λ R1 进行调制，第二光调制器 106 对绿光λ G1 进行调制；第二时序，分光系统 104 使第一补偿光即红光λ R2 沿第一光路传输，使反射后的激发光即蓝光λ B 沿第二光路传输，以使第一光调制器 105 对第一补偿光即红光λ R2 进行调制，使第二光调制器 106 对蓝光λ B 进行调制；第三时序，分光系统 104 使第一补偿光即红光λ R2 沿第一光路传输，使第二补偿光即青绿光λ G2 沿第二光路传输，以使第一光调制器 105 对红光λ R2 进行调制，第二光调制器 106 对青绿光λ G2 进行调制，使得调制后的蓝光λ B 、红光λ R1 、绿光λ G1 、红光λ R2 、青绿光λ G2 合成图像并通过投影镜头 113 投影到屏幕上。其中，第一光调制器 105 和第二光调制器 106 的控制方式如图 10 所示。
其中，本实施例中的投影系统还包括控制器，该控制器用于控制激发光源 101 在第一时序和第二时序开启、在第三时序关闭，控制第二补偿光源在第三时序开启、在第一时序和第二时序关闭，控制第一补偿光源在第二时序和第三时序开启、在第一时序关闭。其中，激发光源 101 、第一补偿光源 1021 和第二补偿光源 1022 的开断时序、旋转色轮 103 各色段的时序以及第一光调制器 105 和第二光调制器 106 的调制时序如图 11 所示。
在本实施例的另一种实施方式中，控制器还用于控制激发光源 101 一直开启，此时，分光系统 104 在第一时序将黄光λ Y 分成沿第一光路传输的绿光λ G1 、沿第二光路传输的红光λ R1 和沿第三光路传输的激发光λ B ；在第二时序使第一补偿光即红光λ R2 沿第二光路传输，使透射后的激发光λ B 沿第一光路和第三光路传输；在第三时序使第一补偿光即红光λ R2 沿第二光路传输，使所述第二补偿光即青绿光λ G2 沿第一光路传输，使透射后的激发光λ B 沿第三光路传输，并且，光调制系统包括第一光调制器 105 、第二光调制器 106 和第三光调制器 107 ，第一光调制器 105 对第一光路传输的光进行调制，第二光调制器 106 对第二光路传输的光进行调制，第三光调制器 107 对第三光路传输的光进行调制，调制时序图如图 12 所示。
在本发明的其他实施例中，控制器用于控制激发光源 101 在第一时序和第二时序开启、在第三时序关闭，控制第一补偿光源 1021 在第三时序开启、在第一时序和第二时序关闭，控制第二补偿光源 1022 在第二时序和第三时序开启、在第一时序关闭。其中，激发光源 101 、第一补偿光源 1021 和第二补偿光源 1022 的开断时序、旋转色轮 103 各色段的时序以及第一光调制器 105 和第二光调制器 106 的调制时序如图 13 所示。
在本实施例的另一种实施方式中，控制器还用于控制激发光源 101 一直开启，此时，所述分光系统在第一时序将所述黄光λ Y 分成沿第一光路传输的红光λ R1 、沿第二光路传输的绿光λ G1 和沿第三光路传输的激发光λ B ；在第二时序使透射后的激发光λ B 沿第一光路和第三光路传输，使第二补偿光即青绿光λ G2 沿第二光路传输；在第三时序使第一补偿光即红光λ R2 沿第一光路传输，使第二补偿光即青绿光λ G2 沿第二光路传输，使透射后的激发光λ B 沿第三光路传输。并且，光调制系统包括第一光调制器 105 、第二光调制器 106 和第三光调制器 107 ，第一光调制器 105 对第一光路传输的光进行调制，第二光调制器 106 对第二光路传输的光进行调制，第三光调制器 107 对第三光路传输的光进行调制，调制时序图如图 14 所示。
第一时序，激发光源 101 发射的激发光λ B 依次通过准直透镜 111 、区域镀膜滤光片 107 和收集透镜 112 后入射到旋转色轮 403 的荧光色段 4041 上，该荧光色段 4041 上的黄光荧光粉在激发光λ B 的照射下产生黄光λ Y ，黄光λ Y 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；第二时序，激发光源 101 发射的激发光λ B 入射到旋转色轮 403 的透明色段 4042 上，该激发光即蓝光λ B 透过旋转色轮 403 后，被二向色镜 114 和 115 反射进入分光系统 104 ，同时，在第二时序，第二补偿光源 1022 发射的第二补偿光λ G2 透过二向色镜 114 后入射到旋转色轮 403 的透明色段 4042 上，该第二补偿光λ G2 透过旋转色轮 403 后，被区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；第三时序，第一补偿光源 1021 发射的第一补偿光λ R2 和第二补偿光源 1022 发射的第二补偿光λ G2 入射到旋转色轮 403 的第二区域 405 上，被第二区域 405 透射后入射到区域镀膜滤光片 107 上，然后该第一补偿光即红光λ R2 和第二补偿光即青绿光λ G2 经过区域镀膜滤光片 107 和反射镜 108 反射后进入分光系统 104 ；
第一时序，分光系统 104 将黄光λ Y 分成沿第一光路传输的红光λ R1 和第二光路传输的绿光λ G1 ，以使第一光调制器 105 对红光λ R1 进行调制，第二光调制器 106 对绿光λ G1 进行调制；第二时序，分光系统 104 使反射后的激发光即蓝光λ B 沿第一光路传输，使第二补偿光即青绿光λ G2 沿第二光路传输，以使第一光调制器 105 对蓝光λ B 进行调制，使第二光调制器 106 对青绿光λ G2 进行调制；第三时序，分光系统 104 使第一补偿光即红光λ R2 沿第一光路传输，使第二补偿光即青绿光λ G2 沿第一光路传输，以使第一光调制器 105 对红光λ R2 进行调制，第二光调制器 106 对青绿光λ G2 进行调制，使得调制后的蓝光λ B 、红光λ R1 、绿光λ G1 、红光λ R2 、青绿光λ G2 合成图像并通过投影镜头 113 投影到屏幕上。其中，第一光调制器 105 和第二光调制器 106 的控制方式如图 15 所示。本实施例提供的投影系统，通过第一补偿光补偿红光的色域，通过第二补偿光补偿绿光的色域，并且，补偿光不需照射在荧光粉上而是直接透射，从而在校正投影图像色域的基础上，减少了补偿光的散射损失，提高了补偿光的利用率。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (20)

1 、一种光源系统，其特征在于，包括：
至少在第一时序和第二时序发射激发光的激发光源；
至少在第三时序发射补偿光的补偿光源，所述补偿光源发射的补偿光至少包括一种颜色的激光；
旋转色轮，所述旋转色轮至少包括第一区域和第二区域，在第一时序和第二时序，所述第一区域在所述激发光的照射下时序地产生至少两种不同颜色的光，至少在第三时序，所述第二区域用于透射所述补偿光；
其中，所述至少两种不同颜色的光包括至少一种宽谱的荧光，所述至少一种颜色的激光用于对所述荧光或对所述荧光分出的光进行补偿。
2 、根据权利要求 1 所述的系统，其特征在于，所述至少一种颜色的激光的波谱范围与所述荧光的波谱范围存在部分重叠，所述荧光的波谱范围为 480nm~700nm 。
3 、根据权利要求 2 所述的系统，其特征在于，所述补偿光源包括第一补偿光源和第二补偿光源，所述第一补偿光源用于发射第一补偿光，所述第二补偿光源用于发射第二补偿光。
4 、根据权利要求 3 所述的系统，其特征在于，所述光源系统还包括控制器，所述控制器用于控制所述激发光源在第一时序和第二时序开启、在第三时序关闭，控制所述补偿光源在第三时序开启、在第一时序和第二时序关闭。
5 、根据权利要求 4 所述的系统，其特征在于，所述第一区域包括荧光色段和反射色段，第一时序所述反射色段反射所述激发光，第二时序所述荧光色段在所述激发光的照射下产生黄光；第三时序所述第二区域透射所述第一补偿光和第二补偿光。
6 、根据权利要求 5 所述的系统，其特征在于，所述荧光色段为具有黄光荧光粉的色段；所述反射色段为具有散射粉的色段；所述第二区域为透射式扩散色段。
7 、根据权利要求 6 所述的系统，其特征在于，当所述激发光源和补偿光源设置在所述旋转色轮的两侧时，所述光源系统还包括至少一个区域镀膜滤光片，所述区域镀膜滤光片设置在所述激发光源和旋转色轮之间，用于反射所述激发光、受激光和补偿光。
8 、根据权利要求 3 所述的系统，其特征在于，所述光源系统还包括控制器，所述控制器用于控制所述激发光源在第一时序和第二时序开启、在第三时序关闭，或者，控制所述激发光源一直开启；所述控制器还用于控制所述第一补偿光源在第三时序开启、在第一时序和第二时序关闭，控制所述第二补偿光源在第二时序和第三时序开启、在第一时序关闭，或者，所述控制器还用于控制所述第二补偿光源在第三时序开启、在第一时序和第二时序关闭，控制所述第一补偿光源在第二时序和第三时序开启、在第一时序关闭。
9 、根据权利要求 8 所述的系统，其特征在于，当所述激发光源和补偿光源设置在所述旋转色轮的两侧时，所述光源系统还包括至少一个区域镀膜滤光片和一个二向色镜，所述区域镀膜滤光片设置在所述激发光源和旋转色轮之间，用于反射所述受激光和补偿光，所述二向色镜设置在所述补偿光源和旋转色轮之间，用于透射所述补偿光反射所述激发光。
10 、根据权利要求 9 所述的系统，其特征在于，所述第一区域包括荧光色段和透明色段，第一时序所述荧光色段在所述激发光的照射下产生黄光，第二时序所述透明色段透射所述激发光和第一补偿光，或者，第二时序所述透明色段透射所述激发光和第二补偿光；第三时序所述第二区域透射所述第一补偿光和第二补偿光。
11 、根据权利要求 10 所述的系统，其特征在于，所述荧光色段为具有黄光荧光粉的色段；所述透明色段和所述第二区域为透射式扩散色段。
12 、根据权利要求 7 或 11 所述的系统，其特征在于，所述激发光为蓝光，所述第一补偿光为红光，所述第二补偿光为青绿光。
13 、一种投影系统，其特征在于，包括：
权利要求 1-12 任一项所述的光源系统；
将所述不同颜色的光分成沿不同光路传输的光，并使所述补偿光与对应颜色的光沿同一光路传输的分光系统；
包括多个光调制器的光调制系统，所述光调制器与所述光路一一对应，以对所述光路传输的光进行调制。
14 、根据权利要求 13 所述的系统，其特征在于，当所述第一区域包括荧光色段和反射色段时，所述分光系统在第一时序使所述反射后的激发光沿第二光路传输；在第二时序将所述黄光分成沿第一光路传输的红光和沿第二光路传输的绿光；在第三时序使所述第一补偿光沿第一光路传输，使所述第二补偿光沿第二光路传输。
15 、根据权利要求 13 所述的系统，其特征在于，当所述第一区域包括荧光色段和透射色段，且所述第一补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的绿光和沿第二光路传输的红光；在第二时序使所述第一补偿光沿第二光路传输，使所述透射后的激发光沿第一光路传输；在第三时序使所述第一补偿光沿第二光路传输，使所述第二补偿光沿第一光路传输。
16 、根据权利要求 13 所述的系统，其特征在于，当所述第一区域包括荧光色段和透射色段，且所述第二补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的红光和沿第二光路传输的绿光；在第二时序使所述透射后的激发光沿第一光路传输，使所述第二补偿光沿第二光路传输；在第三时序使所述第一补偿光沿第一光路传输，使所述第二补偿光沿第二光路传输。
17 、根据权利要求 14-16 任一项所述的系统，其特征在于，所述光调制系统包括第一光调制器和第二光调制器，所述第一光调制器对所述第一光路传输的光进行调制，所述第二光调制器对所述第二光路传输的光进行调制。
18 、根据权利要求 13 所述的系统，其特征在于，当所述第一区域包括荧光色段和透射色段，且所述第一补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的绿光、沿第二光路传输的红光和沿第三光路传输的激发光；在第二时序使所述第一补偿光沿第二光路传输，使所述透射后的激发光沿第一光路和第三光路传输；在第三时序使所述第一补偿光沿第二光路传输，使所述第二补偿光沿第一光路传输，使所述透射后的激发光沿第三光路传输。
19 、根据权利要求 13 所述的系统，其特征在于，当所述第一区域包括荧光色段和透射色段，且所述第二补偿光源在第二时序和第三时序开启时，所述分光系统在第一时序将所述黄光分成沿第一光路传输的红光、沿第二光路传输的绿光和沿第三光路传输的激发光；在第二时序使所述透射后的激发光沿第一光路和第三光路传输，使所述第二补偿光沿第二光路传输；在第三时序使所述第一补偿光沿第一光路传输，使所述第二补偿光沿第二光路传输，使所述透射后的激发光沿第三光路传输。
20 、根据权利要求 18 或 19 所述的系统，其特征在于，所述光调制系统包括第一光调制器、第二光调制器和第三光调制器，所述第一光调制器对所述第一光路传输的光进行调制，所述第二光调制器对所述第二光路传输的光进行调制，所述第三光调制器对所述第三光路传输的光进行调制。
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