WO2013078862A1 - 投影装置及其控制方法 - Google Patents

投影装置及其控制方法 Download PDF

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Publication number
WO2013078862A1
WO2013078862A1 PCT/CN2012/078091 CN2012078091W WO2013078862A1 WO 2013078862 A1 WO2013078862 A1 WO 2013078862A1 CN 2012078091 W CN2012078091 W CN 2012078091W WO 2013078862 A1 WO2013078862 A1 WO 2013078862A1
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WO
WIPO (PCT)
Prior art keywords
segment
light
solid
state light
laser
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/CN2012/078091
Other languages
English (en)
French (fr)
Inventor
胡飞
李屹
杨毅
曹亮亮
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 EP18187468.6A priority Critical patent/EP3432067B1/en
Priority to EP12853696.8A priority patent/EP2787390B1/en
Priority to KR1020147013497A priority patent/KR101897457B1/ko
Priority to JP2014542684A priority patent/JP6061311B2/ja
Publication of WO2013078862A1 publication Critical patent/WO2013078862A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • G03B21/204LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2053Intensity control of illuminating light
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B33/00Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08Sequential recording or projection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H04N9/3114Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10Controlling the light source

Definitions

  • the present invention relates to the field of projection technology, and in particular to a projection apparatus and a control method thereof. Background technique
  • At least two solid-state light sources based on laser diodes (LEDs) or light emitting diodes (LEDs) are used to directly or indirectly generate at least two primary colors of light of different colors.
  • the operating power of each solid state light source is a constant value. Even in the case where the at least two primary colors of light are required to be alternately output, the solid-state light sources are continuously in operation, and the alternate output of the at least two primary colors of light is achieved by filtering of the filter color wheel, thereby causing the projection device Higher energy consumption.
  • the technical problem to be solved by the present invention is to provide a projection apparatus and a control method thereof to reduce the power consumption of the projection apparatus.
  • a technical solution adopted by the present invention is to provide a projection apparatus including at least two solid state light sources, a synchronization device, and a control device.
  • the at least two solid state light sources are for directly or indirectly producing at least two primary colors of light of different colors and alternately outputting.
  • a synchronization device is used to generate the synchronization signal.
  • the control device is configured to respectively control the operating power of the at least two solid-state light sources in a pulsed manner according to the synchronization signal, so that at least in a part of the time period, one of the at least two solid-state light sources is in a normal working state, and in the at least two solid-state light sources The other is in a state of energy saving.
  • the at least two solid state light sources comprise a first solid state light source for generating an excitation light
  • the projection device further comprises a wavelength conversion device, a first color wheel and a first driving device.
  • a wavelength conversion device is used to convert the excitation light into a laser light.
  • the first color wheel includes a first segment and a second segment that are incident on the first color wheel by the laser.
  • the first driving device is configured to drive the first color wheel such that the first segment and the second segment are alternately disposed on the propagation path of the laser, so that the laser is filtered by the first segment to generate the first primary color light.
  • the second primary color light is generated by the laser being filtered through the second section.
  • the wavelength conversion device comprises a second color wheel and a second driving device.
  • a wavelength conversion material is disposed on the second color wheel.
  • the second driving means is for driving the second color wheel such that the spot formed by the excitation light on the second color wheel acts on the wavelength converting material along a predetermined path, and the wavelength converting material converts the excitation light into a laser light.
  • the at least two solid state light sources comprise a second solid state light source for generating a third primary color light
  • the projection device further comprises an optical path combining device.
  • the optical path combining device is configured to combine the laser light and the third primary color light, and the laser and the third primary color light are combined by the optical path combining device to be incident on the first color wheel, and the first color wheel further comprises a third segment.
  • the first driving device drives the first color wheel such that the first segment, the second segment and the third segment are alternately disposed on the propagation path of the laser and the third primary color light, and the third primary color light passes through the third segment transmission.
  • the at least two solid state light sources comprise a second solid state light source for generating a third primary color light
  • the projection device further comprises an optical path combining device.
  • the optical path combining device is configured to combine the first primary color light, the second primary color light, and the third primary color light
  • the first color wheel further includes a third segment
  • the first driving device drives the first color wheel to make the first segment
  • the second section and the third section are alternately disposed on the propagation path of the laser.
  • the synchronizing device detects the moving position of the first color wheel, thereby generating a synchronization signal.
  • the control device adjusts the operating power of the first solid-state light source to the first working power when the first segment is disposed on the propagation path of the laser, and is to be the first when the second segment is disposed on the propagation path of the laser.
  • the operating power of the solid state light source is adjusted to a second operating power, and the operating power of the first solid state light source is adjusted to be smaller than the first operating power and the second operating power when the third segment is disposed on the propagation path of the laser.
  • control device will be the first solid when the third section is disposed on the propagation path of the laser
  • the state light source turns off or adjusts the operating power of the first solid state light source such that the first solid state light source remains in a warm state.
  • control device adjusts the operating power of the second solid-state light source to the third operating power when the third segment is disposed on the propagation path of the laser, and is disposed in the first segment or the second segment to be transmitted by the laser.
  • the operating power of the second solid state light source is adjusted to be less than the third operating power when in the path.
  • control device turns off the second solid state light source or adjusts the operating power of the second solid state light source when the first segment or the second segment is disposed on the propagation path of the laser light to maintain the second solid state light source in a warm state.
  • the first color wheel further includes a fourth segment, the fourth segment transmits the laser and the third primary light, and the first driving device drives the first color wheel such that the first segment, the second segment, and the third region
  • the segment and the fourth segment are alternately disposed on the propagation path of the laser and the third primary light, and when the fourth segment is disposed on the propagation path of the laser and the third primary light, the control device controls the first solid state light source and the The two solid state light sources are in normal working condition at the same time.
  • a technical solution adopted by the present invention is: providing a control method of a projection apparatus, comprising: directly or indirectly generating at least two primary colors of light of different colors and alternately output by using at least two solid-state light sources;
  • the device generates a synchronization signal; respectively, controlling, by the control device, the operating power of the at least two solid-state light sources in a pulse manner according to the synchronization signal, so that at least one of the at least two solid-state light sources is in a normal working state at least in a part of the time period, and the at least two The other of the solid state light sources is in a power saving state.
  • the first solid state light source of the at least two solid state light sources to generate an excitation light; converting the excitation light into a laser beam by using a wavelength conversion device; driving the first segment and the second segment by using the first driving device a first color wheel, such that the first segment and the second segment of the color wheel are alternately disposed on the propagation path of the laser, so that the laser is filtered by the first segment to generate the first primary light, and the laser passes through The second segment is filtered to produce a second primary color of light.
  • the third primary color light is generated by the second solid state light source of the at least two solid state light sources; the optical path is combined by the optical path combining device, and the optical path is combined by the laser and the third primary color light through the optical path combining device.
  • the first color wheel After being merged, incident on the first color wheel; driving the first color wheel further provided with the third segment by using the first driving device, so that the first segment, the first segment
  • the two segments and the third segment are alternately disposed on a propagation path of the laser and the third primary light, and the third primary light is transmitted through the third segment.
  • the third primary color light is generated by the second solid state light source of the at least two solid state light sources; the first primary color light, the second primary color light and the third primary color light are optically combined by the optical path combining device; driven by the first driving device
  • a first color wheel of the third segment is further disposed such that the first segment, the second segment, and the third segment of the color wheel are alternately disposed on the propagation path of the laser.
  • the operating device adjusts the operating power of the first solid-state light source to the first operating power when the first segment is disposed on the propagation path of the laser, and the second segment is disposed on the propagation path of the laser. Adjusting the operating power of the solid state light source to the second working power, and adjusting the operating power of the first solid state light source to be smaller than the first working power and the second working power when the third segment is disposed on the propagation path of the laser, further Using the control device to adjust the operating power of the second solid-state light source to the third operating power when the third segment is disposed on the propagation path of the laser, and to set the propagation path of the laser in the first segment or the second segment The working power of the second solid state light source is adjusted to be smaller than the third working power.
  • the projection apparatus and the control method thereof of the present invention are capable of controlling one of the at least two solid-state light sources to be in a normal working state at least for a part of the time period according to the synchronization signal, while controlling the The other of the at least two solid state light sources is in a power saving state, thereby reducing the energy consumption of the projection device while ensuring proper operation of the projection device.
  • FIG. 1 is a schematic structural view of a first embodiment of a projection apparatus of the present invention
  • Figure 2 is a front elevational view of the first color wheel in the projection apparatus shown in Figure 1;
  • FIG. 3 is a schematic view showing the brightness of each primary color light when the first color wheel shown in FIG. 2 is used;
  • FIG. 4 is a schematic diagram showing the operating power of the first solid state light source when the first color wheel shown in FIG. 2 is used;
  • Figure 5 is a schematic view showing the operating power of the second solid-state light source when the first color wheel shown in Figure 2 is used;
  • Figure 6 is a front view of another first color wheel in the projection apparatus shown in Figure 1;
  • Figure 7 is a schematic view showing the brightness of each primary color light when the first color wheel shown in Figure 6 is used;
  • 6 is a schematic diagram of the operating power of the first solid state light source when the first color wheel is shown;
  • Figure 9 is a schematic view showing the operating power of the second solid-state light source when the first color wheel shown in Figure 6 is used;
  • Figure 10 is a schematic structural view of a second embodiment of the projection apparatus of the present invention.
  • Figure 11 is a flow chart showing a control method of the projection apparatus of the present invention. detailed description
  • FIG. 1 is a schematic structural view of a first embodiment of a projection apparatus of the present invention.
  • the projection apparatus of this embodiment mainly includes a light source system 10, a light modulation system 11, a screen 12, a synchronizing device 13, and a control device 14.
  • the light source system 10 includes a first solid state light source 101, a second solid state light source 102, a first color wheel 103, a second color wheel 104, a first driving device 105, a second driving device 106, and an optical path combining device 107. And light collecting devices 108 and 109.
  • the first solid state light source 101 is for generating an excitation light, and the generated excitation light is incident on the second color wheel 104.
  • a wavelength converting material (not shown) is provided on the second color wheel 104, and the wavelength converting material converts the excitation light into a laser beam.
  • the second driving device 106 drives the second color wheel 104 such that the spot light formed by the excitation light generated by the first solid-state light source 101 on the second color wheel 104 acts on the wavelength conversion material along a predetermined path, thereby avoiding the excitation light in the second
  • the temperature formed by the spot formed on the color wheel 104 acting on the same position of the wavelength converting material for a long time is too high.
  • the second color wheel 104 and the second drive unit 106 may also be replaced by other wavelength conversion devices.
  • the second color wheel 104 and the second driving device 106 are replaced by doping a suitable wavelength converting material into the packaging material of the light emitting diode.
  • the laser light output from the second color wheel 104 is collected by the light collecting device 108, incident on the optical path combining device 107, transmitted by the optical path combining device 107, collected by the light collecting device 109, and incident on the first color wheel 103.
  • light collecting devices 108 and 109 can be lenses or other suitable optical components.
  • the first color wheel 103 is provided with The first section 1031, the second section 1032, and the third section 1033.
  • the first primary color light is generated by the laser being filtered by the first section 1031, and the second primary color light is generated after being filtered by the second section 1032.
  • the second solid state light source 102 produces a third primary color light.
  • the third primary color light generated by the second solid state light source 102 is reflected by the optical path combining means 107, and is further combined with the laser light path generated by the second color wheel 104.
  • the optical path combining means 107 may be a spectroscopic filter or other suitable optical element.
  • the laser light and the third primary color light are combined by the optical path combining means 107 to be incident on the first color wheel 103.
  • the first driving device 105 drives the first color wheel 103 such that the first segment 1031, the second segment 1032, and the third segment 1033 are alternately disposed on the propagation path of the laser and the third primary light, the first segment 1031 filters the incident laser light and the third primary color light and transmits the first primary color light, the second segment 1032 filters the incident laser light and the third primary color light and transmits the second primary color light, and the third segment 1033 Only the incident primary laser light and the third primary color light of the third primary color light are transmitted, thereby causing the first color wheel 103 to alternately output the first primary color light, the second primary color light, and the third primary color light of different colors.
  • the third segment 1033 may be provided with a scattering material or a scattering microstructure to scatter the third primary light to decohere the third primary light.
  • the first primary color light, the second primary color light, and the third primary color light are respectively image-modulated by the light modulation system 11 and incident on the screen 12.
  • the first solid state light source 101 may be a blue, ultraviolet or near ultraviolet laser tube or a light emitting diode.
  • the second solid state light source 102 can be a blue laser tube or a light emitting diode.
  • the wavelength converting material on the second color wheel 104 is a yellow fluorescent material that converts the excitation light generated by the first solid state light source 101 into yellow light.
  • the first segment 1031, the second segment 1032, and the third segment 1033 on the first color wheel 103 are a red light filter region, a green light filter region, and a blue light transmission region, respectively, and the first segment 1031 can be incident.
  • the yellow and blue light filters and outputs red light
  • the second segment 1032 is capable of filtering the incident yellow and blue light and outputting green light
  • the third segment 1033 is only for the incident yellow light and blue light in the blue light.
  • Transmission is performed so that the first color wheel 103 alternately generates three primary colors of red, green, and blue light (RGB).
  • RGB red, green, and blue light
  • the brightness of red light R, green light G and blue light B is as shown in Fig. 3.
  • the above-described light source system 10 can also be used to generate three primary colors of other colors.
  • the synchronizing means 13 detects the moving position of the first color wheel 103, thereby generating a synchronizing signal. Specifically, the synchronizing means 13 can detect a specific mark provided on the first color wheel 103 and generate a synchronizing pulse each time the specific mark is detected. In other embodiments, the synchronizing device 13 may also generate a synchronizing signal by other means, such as detecting the brightness of the primary color light of a particular color.
  • the control device 14 determines, based on the synchronization signal, the time at which the first segment 1031, the second segment 1032, and the third segment 1033 are disposed on the propagation paths of the laser light and the third primary color light, and Adjusting the operating power of the first solid state light source 101 to the first operating power when the first segment 1031 is disposed on the propagation path of the laser and the third primary light, and is disposed in the second segment 1032 on the laser and the third
  • the operating power of the first solid-state light source 101 is adjusted to the second operating power when the primary color light travels. At this time, the first solid state light source 101 is in a normal working state.
  • the control device 14 further adjusts the operating power of the second solid state light source 102 to the third operating power when the third section 1033 is disposed on the propagation path of the laser light and the third primary color light. At this time, the second solid state light source 102 is in a normal operating state.
  • the first primary color light, the second primary color light, and the third primary color light can be adjusted to a desired brightness to meet the requirements of the projection display.
  • the first operational power and the second operational power are shown to be the same, but in practical applications, the first operational power, the second operational power, and the third operational power may be arbitrarily adjusted according to the desired luminance of each primary color light.
  • control device 14 further adjusts the operating power of the second solid-state light source 102 to be smaller when the first segment 1031 or the second segment 1032 is disposed on the propagation path of the laser and the third primary light.
  • the third working power is such that the second solid-state light source 102 is in a power-saving state, and the operating power of the first solid-state light source 101 is adjusted to be smaller than the first when the third segment 1033 is disposed on the propagation path of the laser and the third primary light.
  • the operating power and the second operating power cause the first solid state light source 101 to be in a power saving state.
  • the control device 14 turns off the second solid state light source 102 or adjusts the second solid state light source 102 when the first segment 1031 or the second segment 1032 is disposed on the propagation path of the laser and the third primary light. Power, maintaining the second solid state light source 102 in a warm-up status, and turning off or adjusting the first solid state light source 101 when the third segment 1033 is disposed on the propagation path of the laser and the third primary light.
  • the operating power of the first solid state light source 101 maintains the first solid state light source 101 in a warm state.
  • the first solid state light source 101 and the two solid-state light sources 102 When the first solid state light source 101 and the two solid-state light sources 102 are maintained in the warm-up state, the first solid-state light source 101 and the second solid-state light source 102 can be maintained at a predetermined temperature, so that the normal operating state can be entered more quickly, and the time of state switching can be reduced.
  • the control device 14 controls the operating power of the first solid-state light source 101 and the second solid-state light source 102 in a pulsed manner, the first solid-state light source 101 and the second solid-state light source 102 are alternately in a normal working state and a power-saving state, and further Reduce the energy consumption of the projection device while ensuring that the projection device is working properly.
  • the first solid-state light source 101 and the second solid-state light source 102 operate in a pulsed manner, the heat generation of the first solid-state light source 101 and the second solid-state light source 102 is reduced, so that it can be driven by a higher operating power.
  • the output of the higher brightness light and in the case of the same output brightness, can also reduce the number of the first solid state light source 101 and the second solid state light source 102 to reduce the cost of the system.
  • the first color wheel 103 further includes a fourth section 1034 in addition to the first section 1031, the second section 1032, and the third section 1033.
  • the first driving device 105 drives the first color wheel 103 such that the first segment 1031, the second segment 1032, the third segment 1033, and the fourth segment 1034 are alternately disposed after the optical path combining by the optical path combining device 107.
  • the fourth segment 1034 transmits the laser light and the third primary color light, thereby outputting white light.
  • the luminances of red light R, green light G, blue light B, and white light W are as shown in FIG. At this time, as shown in FIGS.
  • the control device 14 controls the first solid state light source 101 and the The two solid-state light sources 102 are simultaneously in a normal working state, so that the first color wheel 103 outputs white light to the light modulation system 11 to achieve white light enhancement.
  • the duty ratio of the first solid state light source 101 and the second solid state light source 102 increases, increasing the utilization thereof.
  • Fig. 10 is a schematic structural view showing a second embodiment of the projection apparatus of the present invention.
  • the projection apparatus of this embodiment mainly includes a light source system, a light modulation system 21, a screen 22, a synchronizing device 23, and a control device 24.
  • the light source system includes a first solid state light source 201, a second solid state light source 202, a first color wheel 203, a second color wheel 204, a first driving device 205, a second driving device 206, Optical path combining device 207 and light collecting devices 208 and 209.
  • the projection apparatus of this embodiment is different from the projection apparatus shown in FIG. 1 in that the second solid-state light source 202 and the optical path combining means 207 of the present embodiment are disposed on the downstream optical path of the first color wheel 203.
  • the third primary color light generated by the second solid-state light source 202 is optically combined by the first primary color light and the second primary color light generated by the optical path combining means 207 and the first color wheel 203.
  • the first color wheel 203 is also provided with a first section, a second section and a third section.
  • the first segment, the second segment, and the third segment are alternately disposed on the propagation path of the laser light generated by the second color wheel 204 under the driving of the first driving device 205.
  • the laser light generated by the second color wheel 204 is filtered by the first segment into the first primary color light, and the stimulated light generated by the second color wheel 204 is filtered by the second segment into the second primary color light.
  • the control means 24 determines the time at which the first section, the second section and the third section are disposed on the propagation path of the laser light based on the synchronization signal generated by the synchronizing means 23.
  • the control device 24 adjusts the operating power of the first solid-state light source 201 to the first operating power when the first segment is disposed on the laser-propagating path, and when the second segment is disposed on the laser-propagating path.
  • the operating power of a solid state light source 201 is adjusted to a second operating power, and the operating power of the first solid state light source 201 is adjusted to be smaller than the first operating power and the second operating power when the third segment is disposed on the propagation path of the laser. .
  • the control device 24 further adjusts the operating power of the second solid-state light source 202 to the third operating power when the third segment is disposed on the propagation path of the laser, and is disposed in the first segment or the second segment in the laser-receiving
  • the operating power of the second solid state light source 202 is adjusted to be less than the third operating power when in the propagation path.
  • the operating power of the second solid-state light source 202 should be Adjusting such that the third primary color light generated by the second solid state light source 202 has no effect on the first primary color light and the second primary color light, for example, the interference of the third primary color light on the first primary color light and the second primary color light is not affected by the human eye. observed.
  • the control device 24 turns off the second solid-state light source 202 or adjusts the operating power of the second solid-state light source 202 when the first segment or the second segment is disposed on the laser-propagating path, so that the second solid-state light source 202 is maintained at Warming up, and turning off the first solid-state light source 201 or adjusting the operating power of the first solid-state light source 201 when the third section is disposed on the propagation path of the laser light such that the first solid-state light source is 201-dimensional Holding in warm state.
  • the control device 24 controls the operating power of the first solid-state light source 201 and the second solid-state light source 202 in a pulsed manner, the first solid-state light source 201 and the second solid-state light source 202 are alternately in a normal working state and an energy-saving state, and further Reduce the energy consumption of the projection device while ensuring that the projection device is working properly.
  • the first solid-state light source 201 and the second solid-state light source 202 operate in a pulsed manner, the heat generation of the first solid-state light source 201 and the second solid-state light source 202 is reduced, so that it can be driven by a higher operating power.
  • the output of the higher brightness light and in the case of the same output brightness, can also reduce the number of the first solid state light source 201 and the second solid state light source 202 to reduce the cost of the system.
  • the synchronizing device and the control device of the present invention are applicable to, in addition to the projection devices described in the first embodiment and the second embodiment, to at least two solid state light sources and are directly utilized by the at least two solid state light sources. Or various projection devices that indirectly produce at least two primary colors of light of different colors and alternately output.
  • the control device respectively controls the operating power of the at least two solid-state light sources in a pulse manner according to the synchronization signal generated by the synchronization device, so that at least in a part of the time period, one of the at least two solid-state light sources is in a normal working state, and the at least The other of the two solid state light sources is in a power saving state, thereby reducing the energy consumption of the projection device.
  • FIG. 11 is a flow chart showing a first embodiment of the control method of the projection apparatus of the present invention. As shown in FIG. 11, the control method of this embodiment includes the following steps.
  • step S31 at least two primary colors of light of different colors and alternately output are directly or indirectly generated by at least two solid state light sources.
  • This step can be implemented in the manner of the first embodiment and the second embodiment of the projection apparatus described above, and can be implemented in various manners well known in the art, and details are not described herein again.
  • step S32 a synchronization signal is generated by the synchronizing means.
  • the synchronization signal can be generated by detecting the moving position of the color wheel for generating the primary color light.
  • step S33 the operating power of the at least two solid-state light sources is respectively controlled in a pulse manner according to the synchronization signal by the control device, so that at least one of the at least two solid-state light sources is in a normal working state at least in part of the period, while at least two solid states The other of the light sources is in the section Can state.
  • This step can be implemented by the first embodiment and the second embodiment of the projection apparatus described above, and details are not described herein again.
  • the projection apparatus of the present invention and the control method thereof are capable of controlling one of the at least two solid-state light sources to be in a normal working state at least for a part of a period of time according to a synchronization signal, while controlling the other of the at least two solid-state light sources to be in a power-saving state, and further Reduce the energy consumption of the projection device while ensuring that the projection device is working properly.
  • the method for adjusting power in the present invention may be various, for example, a method of adjusting power by adjusting a duty ratio of a current, a voltage, or a periodic pulse, which are well-known technologies, and the specific implementation manner thereof I will not go into details here.

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Abstract

一种投影装置及其控制方法。该投影装置包括至少两个固态光源(101、102)、同步装置(13)以及控制装置(14)。该至少两个固态光源(101、102)用于直接或者间接产生不同颜色且交替输出的至少两束基色光。同步装置(13)用于产生同步信号。控制装置(14)用于根据同步信号分别以脉冲方式控制该至少两个固态光源(101、102)的工作功率,以便至少在部分时段中该至少两个固态光源(101、102)中的一个处于正常工作状态,同时该至少两个固态光源(101、102)中的另一个处于节能状态。

Description

投影装置及其控制方法 技术领域
本发明涉及投影技术领域, 特别是涉及一种投影装置及其控制方 法。 背景技术
在现有技术的投影装置中, 通常使用至少两个基于激光管 (LD, Laser Diode )或发光二极管 (LED, Light Emitting Diode ) 的固态光源 直接或间接产生不同颜色的至少两束基色光。 然而, 现有技术的投影装 置中, 各固态光源的工作功率为恒定值。 即使是在需要该至少两束基色 光交替输出的情况下, 该各固态光源也持续处于工作状态, 而通过滤光 色轮的过滤实现该至少两束基色光的交替输出, 因此导致投影装置的能 耗较高。
综上, 需要提供一种投影装置及其控制方法, 以解决现有技术的投 影装置的各固态光源持续处于工作状态所导致的能耗较高的技术问题。 发明内容
本发明主要解决的技术问题是提供一种投影装置及其控制方法, 以 降低投影装置的能耗。
为解决上述技术问题, 本发明采用的一个技术方案是: 提供一种投 影装置, 包括至少两个固态光源、 同步装置以及控制装置。 该至少两个 固态光源用于直接或间接产生不同颜色且交替输出的至少两束基色光。 同步装置用于产生同步信号。 控制装置用于根据同步信号分别以脉沖方 式控制该至少两个固态光源的工作功率, 以便至少在部分时段中该至少 两个固态光源中的一个处于正常工作状态, 同时该至少两个固态光源中 的另一个处于节能状态。 其中, 该至少两个固态光源包括用于产生一激发光的第一固态光 源, 投影装置进一步包括波长转换装置、 第一色轮以及第一驱动装置。 波长转换装置用于将激发光转换成受激光。 第一色轮包括第一区段和第 二区段, 受激光入射到第一色轮上。 第一驱动装置用于驱动第一色轮, 以使得第一区段和第二区段交替设置于受激光的传播路径上, 进而使得 受激光经第一区段过滤后产生第一基色光, 受激光经第二区段过滤后产 生第二基色光。
其中, 波长转换装置包括第二色轮以及第二驱动装置。 第二色轮上 设置有波长转换材料。 第二驱动装置用于驱动第二色轮, 以使得激发光 在第二色轮上形成的光斑沿预定路径作用于波长转换材料, 波长转换材 料将激发光转换成受激光。
其中, 该至少两个固态光源包括用于产生第三基色光的第二固态光 源, 投影装置进一步包括光路合并装置。 光路合并装置用于将受激光和 第三基色光进行光路合并, 受激光和第三基色光经光路合并装置进行光 路合并后入射到第一色轮上, 第一色轮进一步包括第三区段, 第一驱动 装置驱动第一色轮, 使得第一区段、 第二区段和第三区段交替设置于受 激光和第三基色光的传播路径上, 第三基色光经第三区段透射。
其中, 该至少两个固态光源包括用于产生第三基色光的第二固态光 源, 投影装置进一步包括光路合并装置。 光路合并装置用于将第一基色 光、 第二基色光和第三基色光进行光路合并, 第一色轮进一步包括第三 区段, 第一驱动装置驱动第一色轮, 使得第一区段、 第二区段和第三区 段交替设置于受激光的传播路径上。
其中, 同步装置检测第一色轮的运动位置, 进而产生同步信号。 其中, 控制装置在第一区段设置于受激光的传播路径上时将第一固 态光源的工作功率调整至第一工作功率, 在第二区段设置于受激光的传 播路径上时将第一固态光源的工作功率调整至第二工作功率, 并在第三 区段设置于受激光的传播路径上时将第一固态光源的工作功率调整成 小于第一工作功率和第二工作功率。
其中, 控制装置在第三区段设置于受激光的传播路径上时将第一固 态光源关闭或调整第一固态光源的工作功率使得第一固态光源维持在 暖机状态。
其中, 控制装置在第三区段设置于受激光的传播路径上时将第二固 态光源的工作功率调整至第三工作功率, 并在第一区段或第二区段设置 在受激光的传播路径上时将第二固态光源的工作功率调整成小于第三 工作功率。
其中, 控制装置在第一区段或第二区段设置在受激光的传播路径上 时关闭第二固态光源或调整第二固态光源的工作功率使得第二固态光 源维持在暖机状态。
其中, 第一色轮进一步包括第四区段, 第四区段透射受激光和第三 基色光, 第一驱动装置驱动第一色轮, 使得第一区段、 第二区段、 第三 区段和第四区段交替设置于受激光和第三基色光的传播路径上, 在第四 区段设置于受激光和第三基色光的传播路径上时, 控制装置控制第一固 态光源和第二固态光源同时处于正常工作状态。
为解决上述技术问题, 本发明采用的一个技术方案是: 提供一种投 影装置的控制方法, 包括: 利用至少两个固态光源直接或间接产生不同 颜色且交替输出的至少两束基色光; 利用同步装置产生同步信号; 利用 控制装置根据同步信号分别以脉沖方式控制该至少两个固态光源的工 作功率, 以便至少在部分时段中该至少两个固态光源中的一个处正常工 作状态, 同时该至少两个固态光源中的另一个处于节能状态。
其中, 利用该至少两个固态光源中的第一固态光源产生一激发光; 利用波长转换装置将激发光转换成受激光; 利用第一驱动装置驱动设置 有第一区段和第二区段的第一色轮, 以使得色轮的第一区段和第二区段 交替设置于受激光的传播路径上, 进而使得受激光经第一区段过滤后产 生第一基色光, 受激光经第二区段过滤后产生第二基色光。
其中, 利用该至少两个固态光源中的第二固态光源产生第三基色 光; 利用光路合并装置将受激光和第三基色光进行光路合并, 受激光和 第三基色光经光路合并装置进行光路合并后入射到第一色轮上; 利用第 一驱动装置驱动进一步设置有第三区段的第一色轮, 使得第一区段、 第 二区段和第三区段交替设置于受激光和第三基色光的传播路径上, 第三 基色光经第三区段透射。
其中, 利用该至少两个固态光源中的第二固态光源产生第三基色 光; 利用光路合并装置将第一基色光、 第二基色光和第三基色光进行光 路合并; 利用第一驱动装置驱动进一步设置有第三区段的第一色轮, 使 得色轮的第一区段、 第二区段和第三区段交替设置于受激光的传播路径 上。
其中, 利用控制装置在第一区段设置于受激光的传播路径上时将第 一固态光源的工作功率调整至第一工作功率, 在第二区段设置于受激光 的传播路径上时将第一固态光源的工作功率调整至第二工作功率, 并在 第三区段设置于受激光的传播路径上时将第一固态光源的工作功率调 整成小于第一工作功率和第二工作功率, 进一步利用控制装置在第三区 段设置于受激光的传播路径上时将第二固态光源的工作功率调整至第 三工作功率, 并在第一区段或第二区段设置于受激光的传播路径上时将 第二固态光源的工作功率调整成小于第三工作功率。
本发明的有益效果是: 区别于现有技术的情况, 本发明的投影装置 及其控制方法能够根据同步信号至少在部分时段控制该至少两个固态 光源中的一个处于正常工作状态, 同时控制该至少两个固态光源中的另 一个处于节能状态, 进而在确保投影装置正常工作的前提下降低投影装 置的能耗。 附图说明
图 1是本发明的投影装置的第一实施例的结构示意图;
图 2是图 1所示的投影装置中的第一色轮的主视图;
图 3是采用图 2所示的第一色轮时的各基色光的亮度示意图; 图 4是采用图 2 所示的第一色轮时的第一固态光源的工作功率示意 图;
图 5是采用图 2 所示的第一色轮时的第二固态光源的工作功率示意 图; 图 6是图 1所示的投影装置中的另一种第一色轮的主视图; 图 7是采用图 6所示的第一色轮时的各基色光的亮度示意图; 图 8是采用图 6 所示的第一色轮时的第一固态光源的工作功率示意 图;
图 9是采用图 6 所示的第一色轮时的第二固态光源的工作功率示意 图;
图 10是本发明的投影装置的第二实施例的结构示意图;
图 11是本发明的投影装置的控制方法的流程图。 具体实施方式
请参见图 1 , 图 1是本发明的投影装置的第一实施例的结构示意图。 如图 1 所示, 本实施例的投影装置主要包括光源系统 10、 光调制系统 11、 屏幕 12、 同步装置 13以及控制装置 14。
在本实施例中, 光源系统 10包括第一固态光源 101、 第二固态光源 102、 第一色轮 103、 第二色轮 104、 第一驱动装置 105、 第二驱动装置 106、 光路合并装置 107以及光收集装置 108和 109。 第一固态光源 101 用于产生一激发光, 其产生的激发光入射到第二色轮 104上。 第二色轮 104上设置有波长转换材料(未图示), 波长转换材料将激发光转换成受 激光。 第二驱动装置 106驱动第二色轮 104, 以使得第一固态光源 101 产生的激发光在第二色轮 104上形成的光斑沿预定路径作用于波长转换 材料, 进而避免了激发光在第二色轮 104上形成的光斑长时间作用于波 长转换材料的同一位置而导致的温度过高。 在本发明的其他实施例中, 第二色轮 104和第二驱动装置 106也可以由其他波长转换装置代替。 例 如, 通过在发光二极管的封装材料内掺杂适当的波长转换材料来代替第 二色轮 104和第二驱动装置 106。
由第二色轮 104输出的受激光经光收集装置 108收集后入射到光路 合并装置 107上, 并被光路合并装置 107透射, 再经光收集装置 109收 集后入射到第一色轮 103上。 在本实施例中, 光收集装置 108和 109可 以是透镜或其他适当的光学元件。 如图 2所示, 第一色轮 103上设置有 第一区段 1031、第二区段 1032和第三区段 1033。受激光经第一区段 1031 过滤后可产生第一基色光, 经第二区段 1032过滤后可产生第二基色光。
第二固态光源 102产生第三基色光。 第二固态光源 102产生的第三 基色光经光路合并装置 107反射, 进而与第二色轮 104产生的受激光进 行光路合并。 在本实施例中, 光路合并装置 107可以是分光滤光片或其 他适当的光学元件。 受激光和第三基色光经光路合并装置 107进行光路 合并后入射到第一色轮 103上。
第一驱动装置 105驱动第一色轮 103 , 以使得第一区段 1031、 第二 区段 1032以及第三区段 1033交替设置在受激光和第三基色光的传播路 径上, 第一区段 1031 对入射的受激光和第三基色光进行过滤并透射第 一基色光, 第二区段 1032对入射的受激光和第三基色光进行过滤并透 射第二基色光, 第三区段 1033 则仅对入射的受激光和第三基色光中的 第三基色光进行透射, 由此使得第一色轮 103交替输出不同颜色的第一 基色光、 第二基色光以及第三基色光。 第三区段 1033 上可设置有散射 材料或散射微结构, 以对第三基色光进行散射, 进而对第三基色光进行 消相干。 第一基色光、 第二基色光以及第三基色光分别经光调制系统 11 进行图像调制后入射到屏幕 12。
在本实施例中, 第一固态光源 101可以是蓝光、 紫外光或近紫外光 激光管或发光二极管。 第二固态光源 102可以是蓝光激光管或发光二极 管。 第二色轮 104上的波长转换材料为黄光荧光材料, 其将第一固态光 源 101产生的激发光转换成黄光。 第一色轮 103上的第一区段 1031、 第 二区段 1032和第三区段 1033分别是红光滤光区、 绿光滤光区以及蓝光 透射区, 第一区段 1031能够对入射的黄光和蓝光进行过滤并输出红光, 第二区段 1032 能够对入射的黄光和蓝光进行过滤并输出绿光, 而第三 区段 1033 则仅对入射的黄光和蓝光中的蓝光进行透射, 进而使得第一 色轮 103交替产生红光、 绿光和蓝光(RGB )三基色光。 在正常显示过 程中, 红光 R、 绿光 G和蓝光 B的亮度如图 3所示。 在其他实施例中, 也可以利用上述光源系统 10产生其他颜色的三基色光。
同步装置 13检测第一色轮 103的运动位置, 进而产生同步信号。 具体来说, 同步装置 13可对设置在第一色轮 103上的特定标记进行探 测, 并在每次探测到该特定标记时产生一同步脉沖。 在其他实施例中, 同步装置 13 也可以通过其他方式产生同步信号, 例如探测特定颜色的 基色光的亮度。
如图 4和图 5所示,控制装置 14根据同步信号确定第一区段 1031、 第二区段 1032和第三区段 1033设置于受激光和第三基色光的传播路径 上的时间, 并在第一区段 1031 设置于受激光和第三基色光的传播路径 上时将第一固态光源 101的工作功率调整至第一工作功率, 并在第二区 段 1032设置于受激光和第三基色光的传播路径上时将第一固态光源 101 的工作功率调整至第二工作功率。 此时, 第一固态光源 101处于正常工 作状态。 控制装置 14进一步在第三区段 1033设置在受激光和第三基色 光的传播路径上时将第二固态光源 102 的工作功率调整至第三工作功 率。 此时, 第二固态光源 102处于正常工作状态。 通过上述方式, 可将 第一基色光、 第二基色光以及第三基色光调整至所需亮度, 满足投影显 示的要求。 在图 4中, 第一工作功率和第二工作功率显示为相同, 但在 实际应用中, 可以根据各基色光的所需亮度任意调整第一工作功率、 第 二工作功率和第三工作功率。
进一步, 在本实施例中, 控制装置 14进一步在第一区段 1031或第 二区段 1032设置于受激光和第三基色光的传播路径上时将第二固态光 源 102的工作功率调整成小于第三工作功率, 使得第二固态光源 102处 于节能状态, 并在第三区段 1033设置于受激光和第三基色光的传播路 径上时将第一固态光源 101的工作功率调整成小于第一工作功率和第二 工作功率, 使得第一固态光源 101处于节能状态。
在优选实施例中, 控制装置 14在第一区段 1031或第二区段 1032 设置于受激光和第三基色光的传播路径上时关闭第二固态光源 102或调 整第二固态光源 102的工作功率, 使得第二固态光源 102维持在暖机状 态( Warm-up Status ) ,并在第三区段 1033设置于受激光和第三基色光的 传播路径上时将第一固态光源 101关闭或调整第一固态光源 101的工作 功率使得第一固态光源 101维持在暖机状态。 当第一固态光源 101和第 二固态光源 102维持在暖机状态时, 可以使第一固态光源 101和第二固 态光源 102保持在预定温度, 从而可以更快速地进入正常工作状态, 减 少状态切换的时间。
通过上述方式, 由于控制装置 14以脉沖方式控制第一固态光源 101 和第二固态光源 102的工作功率, 使得第一固态光源 101和第二固态光 源 102交替处于正常工作状态和节能状态, 进而在确保投影装置正常工 作的前提下降低投影装置的能耗。
此外,由于第一固态光源 101和第二固态光源 102以脉沖方式工作, 减小了第一固态光源 101和第二固态光源 102的发热量, 可以使其能够 在较高的工作功率的驱动下输出较高亮度的光线, 进而在输出亮度相同 的情况下, 还可以减少第一固态光源 101和第二固态光源 102的数目, 以降低系统的成本。
如图 6所示,第一色轮 103除了包括第一区段 1031、第二区段 1032 和第三区段 1033之外,还进一步包括第四区段 1034。第一驱动装置 105 驱动第一色轮 103, 以使得第一区段 1031、 第二区段 1032、 第三区段 1033和第四区段 1034交替设置于经光路合并装置 107进行光路合并后 的受激光和第三基色光的传播路径上, 第四区段 1034透射受激光以及 第三基色光, 进而输出白光。 在正常显示过程中, 红光 R、 绿光 G、 蓝 光 B以及白光 W的亮度如图 7所示。 此时, 如图 8和图 9所示, 当第 一色轮 103的第四区段 1034设置于受激光和第三基色光的传播路径上 时, 控制装置 14控制第一固态光源 101和第二固态光源 102同时处于 正常工作状态, 进而使得第一色轮 103输出白光到光调制系统 11 , 实现 白光增强目的。 同时, 第一固态光源 101和第二固态光源 102工作的占 空比增加, 提高其利用率。
请参见图 10, 图 10是本发明的投影装置的第二实施例的结构示意 图。 如图 10所示, 本实施例的投影装置主要包括光源系统、 光调制系 统 21、 屏幕 22、 同步装置 23以及控制装置 24。
在本实施例中,光源系统包括第一固态光源 201、第二固态光源 202、 第一色轮 203、 第二色轮 204、 第一驱动装置 205、 第二驱动装置 206、 光路合并装置 207以及光收集装置 208和 209。 本实施例的投影装置与 图 1所示的投影装置的不同之处在于, 本实施例的第二固态光源 202和 光路合并装置 207设置于第一色轮 203的下游光路。 此时, 第二固态光 源 202产生的第三基色光经光路合并装置 207与第一色轮 203产生的第 一基色光和第二基色光进行光路合并。
在本实施例中, 第一色轮 203同样设置有第一区段、 第二区段和第 三区段。 第一区段、 第二区段以及第三区段在第一驱动装置 205的驱动 下交替设置于第二色轮 204产生的受激光的传播路径上。 第二色轮 204 产生的受激光经第一区段过滤成第一基色光, 第二色轮 204产生的受激 光经第二区段过滤成第二基色光。
控制装置 24根据同步装置 23产生的同步信号确定第一区段、 第二 区段以及第三区段设置于该受激光的传播路径上的时间。 控制装置 24 在第一区段设置于受激光的传播路径上时将第一固态光源 201的工作功 率调整至第一工作功率, 并在第二区段设置于受激光的传播路径上时将 第一固态光源 201的工作功率调整至第二工作功率, 并在第三区段设置 于受激光的传播路径上时将第一固态光源 201的工作功率调整成小于第 一工作功率和第二工作功率。 控制装置 24进一步在第三区段设置于受 激光的传播路径上时将第二固态光源 202的工作功率调整至第三工作功 率, 并在第一区段或第二区段设置在受激光的传播路径上时将第二固态 光源 202的工作功率调整成小于第三工作功率。
由于第二固态光源 202 产生的第三基色光直接入射到光调制系统 21 , 因此在第一区段或第二区段设置在受激光的传播路径上时, 第二固 态光源 202的工作功率应调整到使得第二固态光源 202产生的第三基色 光对第一基色光和第二基色光不造成影响, 例如第三基色光对第一基色 光和第二基色光的干扰不被人眼所观察到。 优选的, 控制装置 24在第 一区段或第二区段设置于受激光的传播路径上时关闭第二固态光源 202 或调整第二固态光源 202的工作功率, 使得第二固态光源 202维持在暖 机状态, 并在第三区段设置于受激光的传播路径上时将第一固态光源 201关闭或调整第一固态光源 201的工作功率使得第一固态光源 201维 持在暖机状态。
通过上述方式, 由于控制装置 24以脉沖方式控制第一固态光源 201 和第二固态光源 202的工作功率, 使得第一固态光源 201和第二固态光 源 202交替处于正常工作状态和节能状态, 进而在确保投影装置正常工 作的前提下降低投影装置的能耗。
此外,由于第一固态光源 201和第二固态光源 202以脉沖方式工作, 减小了第一固态光源 201和第二固态光源 202的发热量, 可以使其能够 在较高的工作功率的驱动下输出较高亮度的光线, 进而在输出亮度相同 的情况下, 还可以减少第一固态光源 201和第二固态光源 202的数目, 以降低系统的成本。
进一步, 本发明的同步装置及控制装置除了适用于第一实施例和第 二实施例描述的投影装置外, 还适用于本领域公知的包括至少两个固态 光源且利用该至少两个固态光源直接或间接产生不同颜色且交替输出 的至少两束基色光的各种投影装置。 此时, 控制装置根据同步装置产生 的同步信号分别以脉沖方式控制该至少两个固态光源的工作功率, 以便 至少在部分时段中该至少两个固态光源中的一个处于正常工作状态, 同 时该至少两个固态光源中的另一个处于节能状态, 由此降氐投影装置的 能耗。
请参见图 11 , 图 11是本发明的投影装置的控制方法的第一实施例 的流程图。 如图 11所示, 本实施例的控制方法包括以下步骤。
在步骤 S31中, 利用至少两个固态光源直接或间接产生不同颜色且 交替输出的至少两束基色光。 本步骤可通过上文描述的投影装置的第一 实施例和第二实施例中的方式实现, 可以根据本领域公知的各种方式实 现, 在此不再赘述。
在步骤 S32中, 利用同步装置产生同步信号。 在本步骤中, 可通过 对用于产生基色光的色轮的运动位置进行探测来产生同步信号。
在步骤 S33中, 利用控制装置根据同步信号分别以脉沖方式控制该 至少两个固态光源的工作功率, 以便至少在部分时段中至少两个固态光 源中的一个处正常工作状态, 同时至少两个固态光源中的另一个处于节 能状态。 本步骤可通过上文描述的投影装置的第一实施例和第二实施例 中的方式实现, 在此不再赘述。
本发明的投影装置及其控制方法能够根据同步信号至少在部分时 段控制该至少两个固态光源中的一个处于正常工作状态, 同时控制该至 少两个固态光源中的另一个处于节能状态, 进而在确保投影装置正常工 作的前提下降低投影装置的能耗。
此外, 可以理解的是, 本发明调整功率的方式可以有多种, 例如, 通过调整电流、 电压或周期性脉沖的占空比来调整功率的方式, 这些均 为公知技术, 其具体实现方式此处不进行赘述。
以上所述仅为本发明的实施例, 并非因此限制本发明的专利范围, 凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换, 或 直接或间接运用在其他相关的技术领域, 均同理包括在本发明的专利保 护范围内。

Claims

权 利 要 求 书
1. 一种投影装置, 其特征在于, 所述投影装置包括:
至少两个固态光源, 用于直接或间接产生不同颜色且交替输出的至 少两束基色光;
同步装置, 用于产生同步信号;
控制装置, 用于根据所述同步信号分别以脉沖方式控制所述至少两 个固态光源的工作功率, 以便至少在部分时段中所述至少两个固态光源 中的一个处于正常工作状态, 同时所述至少两个固态光源中的另一个处 于节能状态。
2. 根据权利要求 1所述的投影装置, 其特征在于, 所述至少两个固 态光源包括用于产生一激发光的第一固态光源, 所述投影装置进一步包 括:
波长转换装置, 用于将所述激发光转换成受激光;
第一色轮, 所述第一色轮包括第一区段和第二区段, 所述受激光入 射到所述第一色轮上;
第一驱动装置, 用于驱动所述第一色轮, 以使得所述第一区段和所 述第二区段交替设置于所述受激光的传播路径上, 进而使得所述受激光 经所述第一区段过滤后产生第一基色光, 所述受激光经所述第二区段过 滤后产生第二基色光。
3. 根据权利要求 2所述的投影装置, 其特征在于, 所述波长转换装 置包括:
第二色轮, 所述第二色轮上设置有波长转换材料;
第二驱动装置, 用于驱动所述第二色轮, 以使得所述激发光在所述 第二色轮上形成的光斑沿预定路径作用于所述波长转换材料, 所述波长 转换材料将所述激发光转换成所述受激光。
4. 根据权利要求 2所述的投影装置, 其特征在于, 所述至少两个固 态光源包括用于产生第三基色光的第二固态光源, 所述投影装置进一步 包括: 光路合并装置, 用于将所述受激光和所述第三基色光进行光路合 并, 所述受激光和所述第三基色光经所述光路合并装置进行光路合并后 入射到所述第一色轮上, 所述第一色轮进一步包括第三区段, 所述第一 驱动装置驱动所述第一色轮, 使得所述第一区段、 所述第二区段和所述 第三区段交替设置于所述受激光和所述第三基色光的传播路径上, 所述 第三基色光经所述第三区段透射。
5. 根据权利要求 2所述的投影装置, 其特征在于, 所述至少两个固 态光源包括用于产生第三基色光的第二固态光源, 所述投影装置进一步 包括:
光路合并装置, 用于将所述第一基色光、 所述第二基色光和所述第 三基色光进行光路合并, 所述第一色轮进一步包括第三区段, 所述第一 驱动装置驱动所述第一色轮, 使得所述第一区段、 所述第二区段和所述 第三区段交替设置于所述受激光的传播路径上。
6. 根据权利要求 4或 5所述的投影装置, 其特征在于, 所述同步装 置检测所述第一色轮的运动位置, 进而产生所述同步信号。
7. 根据权利要求 4或 5所述的投影装置, 其特征在于, 所述控制装 置在所述第一区段设置于所述受激光的传播路径上时将所述第一固态 光源的工作功率调整至第一工作功率, 在所述第二区段设置于所述受激 光的传播路径上时将所述第一固态光源的工作功率调整至第二工作功 率, 并在所述第三区段设置于所述受激光的传播路径上时将所述第一固 态光源的工作功率调整成小于所述第一工作功率和所述第二工作功率。
8. 根据权利要求 7所述的投影装置, 其特征在于, 所述控制装置在 所述第三区段设置于所述受激光的传播路径上时将所述第一固态光源 关闭或调整所述第一固态光源的工作功率使得所述第一固态光源维持 在暖机状态。
9. 根据权利要求 4或 5所述的投影装置, 其特征在于, 所述控制装 置在所述第三区段设置于所述受激光的传播路径上时将所述第二固态 光源的工作功率调整至第三工作功率, 并在所述第一区段或所述第二区 段设置在所述受激光的传播路径上时将所述第二固态光源的工作功率 调整成小于第三工作功率。
10.根据权利要求 9所述的投影装置, 其特征在于, 所述控制装置 在所述第一区段或所述第二区段设置在所述受激光的传播路径上时关 闭所述第二固态光源或调整所述第二固态光源的工作功率使得所述第 二固态光源维持在暖机状态。
11. 根据权利要求 4所述的投影装置, 其特征在于, 所述第一色轮 进一步包括第四区段, 所述第四区段透射所述受激光和所述第三基色 光, 所述第一驱动装置驱动所述第一色轮, 使得所述第一区段、 所述第 二区段、 所述第三区段和所述第四区段交替设置于所述受激光和所述第 三基色光的传播路径上, 在所述第四区段设置于所述受激光和所述第三 基色光的传播路径上时, 所述控制装置控制所述第一固态光源和所述第 二固态光源同时处于正常工作状态。
12. 一种投影装置的控制方法, 其特征在于, 所述控制方法包括: 利用至少两个固态光源直接或间接产生不同颜色且交替输出的至 少两束基色光;
利用同步装置产生同步信号;
利用控制装置根据所述同步信号分别以脉沖方式控制所述至少两 个固态光源的工作功率, 以便至少在部分时段中所述至少两个固态光源 中的一个处正常工作状态, 同时所述至少两个固态光源中的另一个处于 节能状态。
13.根据权利要求 12所述的投影装置的控制方法, 其特征在于, 所 述利用至少两个固态光源直接或间接产生不同颜色且交替输出的至少 两束基色光的步骤包括:
利用所述至少两个固态光源中的第一固态光源产生一激发光; 利用波长转换装置将所述激发光转换成受激光;
利用第一驱动装置驱动设置有第一区段和第二区段的第一色轮, 以 使得所述色轮的所述第一区段和所述第二区段交替设置于所述受激光 的传播路径上, 进而使得所述受激光经所述第一区段过滤后产生第一基 色光, 所述受激光经所述第二区段过滤后产生第二基色光。
14.根据权利要求 13所述的投影装置的控制方法, 其特征在于, 所 述利用至少两个固态光源直接或间接产生不同颜色且交替输出的至少 两束基色光的步骤进一步包括:
利用所述至少两个固态光源中的第二固态光源产生第三基色光; 利用光路合并装置将所述受激光和所述第三基色光进行光路合并, 所述受激光和所述第三基色光经所述光路合并装置进行光路合并后入 射到所述第一色轮上;
利用所述第一驱动装置驱动进一步设置有第三区段的所述第一色 轮, 使得所述第一区段、 所述第二区段和所述第三区段交替设置于所述 受激光和所述第三基色光的传播路径上, 所述第三基色光经所述第三区 段透射。
15.根据权利要求 13所述的投影装置的控制方法, 其特征在于, 所 述利用至少两个固态光源直接或间接产生不同颜色且交替输出的至少 两束基色光的步骤进一步包括:
利用所述至少两个固态光源中的第二固态光源产生第三基色光; 利用光路合并装置将所述第一基色光、 所述第二基色光和所述第三 基色光进行光路合并;
利用所述第一驱动装置驱动进一步设置有第三区段的所述第一色 轮, 使得所述色轮的第一区段、 第二区段和第三区段交替设置于所述受 激光的传播路径上。
16.根据权利要求 14或 15所述的投影装置的控制方法, 其特征在 于, 所述利用控制装置根据所述同步信号分别以脉沖方式控制所述至少 两个固态光源的工作功率的步骤包括:
利用所述控制装置在所述第一区段设置于所述受激光的传播路径 上时将所述第一固态光源的工作功率调整至第一工作功率, 在所述第二 区段设置于所述受激光的传播路径上时将所述第一固态光源的工作功 率调整至第二工作功率, 并在所述第三区段设置于所述受激光的传播路 径上时将所述第一固态光源的工作功率调整成小于所述第一工作功率 和所述第二工作功率, 进一步利用所述控制装置在所述第三区段设置于 所述受激光的传播路径上时将所述第二固态光源的工作功率调整至第 三工作功率, 并在所述第一区段或所述第二区段设置于所述受激光的传 播路径上时将所述第二固态光源的工作功率调整成小于第三工作功率。
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