WO2021068455A1 - 一种荧光轮、光源模组和投影机 - Google Patents

一种荧光轮、光源模组和投影机 Download PDF

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Publication number
WO2021068455A1
WO2021068455A1 PCT/CN2020/079140 CN2020079140W WO2021068455A1 WO 2021068455 A1 WO2021068455 A1 WO 2021068455A1 CN 2020079140 W CN2020079140 W CN 2020079140W WO 2021068455 A1 WO2021068455 A1 WO 2021068455A1
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WIPO (PCT)
Prior art keywords
layer
excitation light
phosphor layer
light
phosphor
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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/CN2020/079140
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English (en)
French (fr)
Inventor
钟波
肖适
尹蕾
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.)
Chengdu XGIMI Technology Co Ltd
Original Assignee
Chengdu XGIMI Technology Co 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 Chengdu XGIMI Technology Co Ltd filed Critical Chengdu XGIMI Technology Co Ltd
Priority to AU2020363580A priority Critical patent/AU2020363580B2/en
Priority to NZ780262A priority patent/NZ780262B2/en
Priority to US17/599,576 priority patent/US11979690B2/en
Priority to EP20874624.8A priority patent/EP4043957A4/en
Priority to JP2021576766A priority patent/JP7214016B2/ja
Publication of WO2021068455A1 publication Critical patent/WO2021068455A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04N9/3152—Modulator illumination systems for shaping the light beam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/007—Lighting devices or systems producing a varying lighting effect using rotating transparent or colored disks, e.g. gobo wheels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
    • G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam
    • 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
    • G03B21/208—Homogenising, shaping of the illumination light
    • 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]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111—Projection 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
    • 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

Definitions

  • This application relates to the field of projection technology, and specifically to a fluorescent wheel, a light source module and a projector.
  • the fluorescent wheel is used as the second light source, and the fluorescent powder is excited by the excitation light to generate red light, green light or yellow light.
  • Existing fluorescent wheels are generally divided into transmissive fluorescent wheels and reflective fluorescent wheels. When the energy of the light spot focused on the fluorescent wheel is too high, the temperature of the fluorescent wheel will be too high and the phosphor efficiency will be low. The phosphor burned out. When the light spot focused on the fluorescent wheel increases, the temperature of the fluorescent powder is low, and the excited fluorescent light flux is high. However, due to the optical expansion in the projector system, the utilization efficiency of the excited fluorescent light in the system decreases, so There is an optimal spot size.
  • the embodiments of the present application provide a fluorescent wheel, a light source module, and a projector to improve the problem of low phosphor efficiency caused by excessive light source energy.
  • an embodiment of the present application provides a fluorescent wheel, including a substrate, a first phosphor layer, and a second phosphor layer, the substrate including an excitation light reflection area and an excitation light transmission area;
  • the first phosphor layer is disposed on the light-facing surface of the excitation light reflection area and distributed along the circumferential direction of the substrate;
  • the second phosphor layer is arranged on the backlight surface of the excitation light transmission area and distributed along the circumferential direction of the substrate;
  • the first phosphor layer and the second phosphor layer are at least partially staggered in the radial direction of the substrate.
  • the light-facing surface of the excitation light reflection area is provided with a first phosphor layer
  • the backlight surface of the excitation light transmission area is provided with a second phosphor layer.
  • the first phosphor layer and the second phosphor layer are on the base of the substrate. At least partly staggered in the radial direction, so that after the excitation light is irradiated on the phosphor wheel, part of the excitation light is irradiated on the first phosphor layer to excite the first fluorescence, and part of the excitation light passes through the excitation light transmission area and irradiates the second phosphor layer.
  • the second fluorescence is excited, that is, part of the light spot irradiated by the excitation light on the fluorescence wheel is located in the excitation light reflection area and excites the first fluorescence, and part is located in the excitation light transmission area and excites the second fluorescence, which effectively reduces the temperature of the fluorescence wheel and increases Improved phosphor efficiency.
  • the spot size of the transmission zone and the reflection zone meets the optimal spot size of the system. After combining the light path through the lens, the second fluorescence excited by the transmission and the first fluorescence excited by the reflection are combined into one light path, so that about 2 can be obtained. Times the excitation efficiency.
  • the substrate includes a reflective layer and a transmissive layer
  • the reflection layer and the transmission layer are laminated, and the part of the transmission layer covered by the reflection layer is the excitation light reflection area, or the reflection layer is the excitation light reflection area, and the transmission layer is not affected by the excitation light.
  • the part covered by the reflective layer is the excitation light transmission area.
  • the reflective layer and the transmissive layer are stacked, the structure is simple, and the assembly is convenient.
  • this structure can also increase the axial distance between the first phosphor layer and the second phosphor layer, which is beneficial to reduce the temperature of the phosphor wheel.
  • the transmissive layer extends beyond the edge of the reflective layer, and the second phosphor layer is disposed at a portion of the transmissive layer beyond the reflective layer.
  • the second phosphor layer is arranged on the part of the transmissive layer beyond the reflective layer, so that the second phosphor layer will not be blocked by the reflective layer, and the excitation light can more easily excite the second phosphor layer.
  • the substrate includes a reflective layer and a transmissive layer
  • the transmission layer has a ring shape, the transmission layer is sleeved on the outer periphery of the reflection layer, the reflection layer is the excitation light reflection area, and the transmission layer is the excitation light transmission area.
  • the transmission layer is annular, and the transmission layer is sleeved on the outer periphery of the reflection layer, which can effectively reduce the volume of the fluorescent wheel.
  • a film layer is provided on the transmission layer
  • the film layer is used to transmit excitation light and reflect the fluorescence excited by the second phosphor layer.
  • a film layer is provided on the transmission layer, and the film layer can reflect the fluorescence excited by the second phosphor layer to prevent the fluorescence from being emitted to the surroundings.
  • the projection area of the second phosphor layer in the axial direction of the phosphor wheel is contained in the film layer.
  • the projection area of the second phosphor layer in the axial direction of the phosphor wheel is included in the film layer, and the film layer can reflect more fluorescent light, so that the fluorescent light can be emitted more concentratedly in the specified direction.
  • the film layer is a plating film provided on the transmission layer.
  • the film layer on the transmission layer is a plating film
  • the molding process is simple, and the molding and manufacturing are easy.
  • the distribution path of the first phosphor layer and the distribution path of the second phosphor layer are both ring-shaped, and the first phosphor layer is the same as the second phosphor layer.
  • the axis is set, and the outer diameter of the first phosphor layer is equal to the inner diameter of the second phosphor layer.
  • the outer diameter of the first phosphor layer is equal to the inner diameter of the second phosphor layer, that is, the outer contour of the first phosphor layer is aligned with the inner contour of the second phosphor layer, so that the first phosphor layer and The second phosphor layer can make full use of the excitation light.
  • the excitation light reflection area is provided with a transmission part for the excitation light to pass through.
  • the excitation light reflection area is provided with a transmission part, and the excitation light that excites the first phosphor layer can pass through the transmission part, and the excitation light that passes through the transmission part can be used to supplement light.
  • the excitation light reflection area is provided with a reflection structure
  • the reflected light of the excitation light irradiated on the first phosphor layer along the same incident direction and the reflected light of the excitation light irradiated on the reflective structure form an angle.
  • the excitation light reflection area is provided with a reflection structure, the reflection structure can reflect the excitation light, and the excitation light reflected by the reflection structure can be used to supplement light.
  • the reflective structure includes a first mirror or diffuse reflection particles.
  • the reflective structure is a first reflector or diffuse reflective particles, which has a simple structure and is easy to implement.
  • an embodiment of the present application provides a light source module, including a first light source, a light combining system, and a fluorescent wheel;
  • the phosphor wheel includes a substrate, a first phosphor layer, and a second phosphor layer.
  • the substrate includes an excitation light reflection area and an excitation light transmission area; the first phosphor layer is disposed on the welcome surface of the excitation light reflection area. The light surface is distributed along the circumferential direction of the substrate; the second phosphor layer is arranged on the backlight surface of the excitation light transmission area and is distributed along the circumferential direction of the substrate; the first phosphor layer and the The second phosphor layer is at least partially staggered in the radial direction of the substrate;
  • a part of the excitation light emitted by the first light source irradiates the first phosphor layer and excites the first fluorescence, and a part of the excitation light emitted by the first light source irradiates the second fluorescence through the excitation light transmission area
  • the light combining system is used for combining the first fluorescent light and the second fluorescent light.
  • part of the excitation light emitted by the first light source irradiates the first phosphor layer and excites the first fluorescence
  • part of the excitation light emitted by the second light source irradiates the second phosphor layer through the excitation light transmission area and excites
  • the second fluorescent light is generated, and the first fluorescent light and the second fluorescent light are combined through the light combining system, which effectively reduces the temperature of the fluorescent wheel, improves the efficiency of the fluorescent powder, and can effectively improve the light efficiency of the system.
  • the light combining system includes a first converging plastic lens group, a dichroic mirror, a prism, a second converging plastic lens group, a color filter wheel, a light rod, and an optical path folding lens group;
  • the first fluorescent light sequentially passes through the first convergent shaping lens group, the dichroic mirror, the prism, the second convergent shaping lens group, and the color filter wheel to enter the light rod;
  • the second fluorescent light enters the light rod through the optical path reflex lens group, the prism, the second convergent shaping lens group, and the color filter wheel in sequence.
  • the first fluorescence excited by the first phosphor layer is reflected by the excitation light reflection zone and then enters the first convergent plastic lens group, and the first fluorescence is converged and shaped by the first convergent plastic lens group, and then passes through the dichroic mirror.
  • the second converging and shaping lens group After entering the prism and passing through the prism, the second converging and shaping lens group converges and shapes the first fluorescence again.
  • the color filter color wheel filters the color of the first fluorescence, the first fluorescence finally enters the light rod for homogenization.
  • the second fluorescence excited by the second phosphor layer enters the prism after changing the optical path through the optical path turning lens group.
  • the second fluorescence is totally reflected by the prism and then enters the second convergent plastic lens group.
  • the second convergent plastic lens group reacts to the second fluorescence again.
  • the color filter wheel filters the color of the first fluorescence, and the first fluorescence finally enters the light rod for homogenization.
  • the light source module further includes a second light source, and the excitation light emitted by the second light source sequentially passes through the dichroic mirror, the prism, and the second converging plastic lens group , The color filter wheel enters the light rod.
  • the excitation light emitted by the second light source enters the light rod through the dichroic mirror, the prism, the second convergent shaping lens group, and the color filter wheel in sequence, and the excitation light is compensated by setting the second light source.
  • the excitation light reflection area is provided with a transmission part for the excitation light to pass through;
  • the excitation light emitted by the first light source passes through the transmissive part and sequentially passes through the optical path reflex lens group, the prism, the second convergent shaping lens group, and the color filter wheel to enter the light rod.
  • the excitation light emitted by the first light source passes through the transmissive part to enter the light rod through the optical path folding lens group, the prism, the second convergent shaping lens group, and the color filter color wheel in order to compensate the excitation light.
  • the excitation light reflection area is provided with a reflection structure, and the reflection light of the excitation light irradiated on the first phosphor layer along the same incident direction and the reflection light of the excitation light irradiated on the reflection structure At an angle
  • the light source module further includes a second reflector
  • the reflected light rays sequentially pass through the second reflector, the dichroic mirror, the prism, the second convergent plastic lens group, and the The filter color wheel enters the light rod.
  • part of the excitation light emitted by the first light source is irradiated on the reflective structure.
  • the reflected light sequentially passes through the second reflector, dichroic mirror, prism, second convergent shaping lens group, and color filter wheel to enter the light rod. Compensate for excitation light.
  • the light source module further includes an incident optical system
  • the incident optical system includes a focus collimating lens group and a diffuser, and the excitation light emitted by the first light source sequentially passes through the focus collimating lens group, the diffuser, the dichroic mirror and the first The convergent plastic lens group irradiates the fluorescent wheel.
  • the excitation light emitted by the first light source is focused and collimated by the focus collimating lens group, and then homogenized by the diffuser, and then enters the first converging plastic lens group through the dichroic lens, and then passes through the first lens group.
  • the convergent plastic lens group is converged and shaped and irradiated on the fluorescent wheel.
  • a suitable spot size can be obtained.
  • the size of the light spot can be twice the optimal light spot, half of the light spot is focused on the first phosphor layer, and the other half of the light spot is focused on the second phosphor layer.
  • an embodiment of the present application provides a projector including the light source module provided in the embodiment of the second aspect.
  • the projector has the above light source module, which effectively reduces the temperature of the phosphor wheel, improves the phosphor efficiency, and can effectively improve the light efficiency of the system.
  • FIG. 1 is a schematic diagram of the first possible structure of the fluorescent wheel provided in Embodiment 1 of the application;
  • Figure 2 is a view from the direction A shown in Figure 1;
  • FIG. 3 is a schematic diagram of a second possible structure of the fluorescent wheel provided in Embodiment 1 of the application;
  • FIG. 4 is a schematic diagram of a third possible structure of the fluorescent wheel provided in Embodiment 1 of the application;
  • Example 5 is a schematic diagram of a fourth possible structure of the fluorescent wheel provided in Example 1 of the application.
  • Example 6 is a schematic diagram of the structure of the fluorescent wheel provided in Example 2 of the application.
  • FIG. 7 is a schematic diagram of the structure of the fluorescent wheel provided in Embodiment 3 of the application.
  • Example 8 is a schematic diagram of the structure of the fluorescent wheel provided in Example 4 of the application.
  • FIG. 9 is a schematic diagram of a first possible structure of the light source module provided in Embodiment 5 of the application.
  • FIG. 10 is a schematic diagram of a second possible structure of the light source module provided in Embodiment 5 of the application.
  • FIG. 11 is a schematic diagram of a third possible structure of the light source module provided in Embodiment 5 of the application.
  • FIG. 12 is a schematic diagram of a fourth possible structure of the light source module provided in Embodiment 5 of the application.
  • FIG. 13 is a schematic diagram of a fifth possible structure of the light source module provided in Embodiment 5 of the present application.
  • Icon 100-fluorescent wheel; 10-substrate; 11-excitation light reflection area; 111-transmission section; 112-reflection structure; 12-excitation light transmission area; 13-reflection layer; 14-transmission layer; 141-film layer; 15-Connector; 151-Shaft portion; 152-First limiting portion; 153-Second limiting portion; 16-Bottom layer; 20-First phosphor layer; 30-Second phosphor layer; 200-Light source mold Group; 210-first light source; 220-combination system; 221-first convergent shaping lens group; 2211-first plano-convex lens; 2212-first biconvex lens; 222-dichroic mirror; 223-prism; 224- The second convergent plastic lens group; 2241-second biconvex lens; 225-color filter wheel; 226-light rod; 227-optical path turning lens group; 2271-second plano-convex lens; 2272-third bicon
  • the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or is the position or positional relationship that is customarily placed when the application product is used, or is the original
  • the position or position relationship commonly understood by those skilled in the art, or the position or position relationship usually placed when the application product is used is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must It has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.
  • the terms “first” and “second” are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
  • this embodiment provides a fluorescent wheel 100, which includes a base 10, a first phosphor layer 20, and a second phosphor layer 30.
  • the base 10 includes an excitation light reflection area 11 and an excitation light transmission area. 12.
  • the first phosphor layer 20 is disposed on the light-facing surface of the excitation light reflection area 11 and distributed along the circumferential direction of the substrate 10.
  • the second phosphor layer 30 is disposed on the backlight surface of the excitation light transmission area 12 and distributed along the circumferential direction of the base 10.
  • the first phosphor layer 20 and the second phosphor layer 30 are at least partially staggered in the radial direction of the substrate 10.
  • the second fluorescence that is, a part of the light spot irradiated by the excitation light on the fluorescent wheel 100 is located in the excitation light reflection area 11 and excites the first fluorescence, and a part is located in the excitation light transmission area 12 and excites the second fluorescence, which solves the problem of excessive light spot energy.
  • the problem of the high temperature of the fluorescent wheel 100 improves the efficiency of the fluorescent powder.
  • the first fluorescence and the second fluorescence can be combined by the light combining system, which can effectively improve the light efficiency.
  • the excitation light reflection area 11 is the part of the substrate 10 that can reflect the excitation light
  • the excitation light transmission area 12 is the area that the substrate 10 can transmit the excitation light
  • the first phosphor layer 20 is the phosphor coated on the excitation light reflection area 11, and the phosphor in the first phosphor layer 20 may be one color or multiple colors. If the phosphors in the first phosphor layer 20 are in multiple colors, such as red, yellow, and green, the first phosphor layer 20 can be divided into three regions, and each region corresponds to one color phosphor.
  • the second phosphor layer 30 is the phosphor coated on the excitation light transmission area 12, and the phosphor in the second phosphor layer 30 may be one color or multiple colors. If the phosphors in the second phosphor layer 30 are in multiple colors, such as red, yellow, and green, the second phosphor layer 30 can be divided into three regions, and each region corresponds to one color phosphor.
  • the first phosphor layer 20 and the second phosphor layer 30 are phosphors of three colors of red, yellow, and green, and the same color areas in the first phosphor layer 20 and the second phosphor layer 30 Corresponding.
  • Both the excitation light irradiating the first phosphor layer 20 and the second phosphor layer 30 can excite fluorescence, and the excitation light may be blue laser, ultraviolet light, or the like. In this embodiment, illustratively, the excitation light is a blue laser.
  • the base 10 includes a reflective layer 13 and a transmissive layer 14.
  • the reflective layer 13 and the transmissive layer 14 are laminated, the portion of the transmissive layer 14 covered by the reflective layer 13 is the excitation light reflective area 11, or the reflective layer 13 is the excitation light reflective area 11, and the portion of the transmissive layer 14 not covered by the reflective layer 13 is Excite light transmission area 12.
  • the reflective layer 13 and the transmissive layer 14 are laminated and arranged, the structure is simple, and the assembly is convenient. In addition, this structure can also increase the axial distance between the first phosphor layer 20 and the second phosphor layer 30, which is beneficial to reduce the temperature of the phosphor wheel 100.
  • the reflective layer 13 and the transmissive layer 14 are both plate-shaped structures, and the reflective layer 13 and the transmissive layer 14 can be made of multiple materials.
  • the reflective layer 13 is an aluminum substrate
  • the transmission layer 14 is a sapphire substrate.
  • the reflection layer 13 is located on the upper side of the transmission layer 14, and the reflection layer 13 is the excitation light reflection area 11.
  • the light-facing surface of the excitation light reflection area 11 is the surface of the reflection layer 13 away from the transmission layer 14 in the thickness direction
  • the backlight surface of the excitation light transmission area 12 is the part of the transmission layer 14 that is not covered by the reflection layer 13
  • the thickness direction is far away from the surface of the reflective layer 13
  • the light-facing surface of the excitation light transmission region 12 is the part of the transmission layer 14 not covered by the reflective layer 13 that is close to the reflective layer 13 in the thickness direction.
  • the first phosphor layer 20 is provided on the surface of the reflective layer 13 away from the transmissive layer 14
  • the second phosphor layer 30 is provided on the surface of the transmissive layer 14 away from the reflective layer 13.
  • the reflection layer 13 may also be located on the lower side of the transmission layer 14, and the part of the transmission layer 14 covered by the reflection layer 13 is the excitation light reflection area 11. It is understandable that the first phosphor layer 20 is provided on the surface of the transmissive layer 14 away from the reflective layer 13, and the second phosphor layer 30 is provided on the surface of the transmissive layer 14 close to the reflective layer 13.
  • the transmission layer 14 extends beyond the edge of the reflection layer 13, and the second phosphor layer 30 is disposed at a portion of the transmission layer 14 that exceeds the reflection layer 13.
  • the second phosphor layer 30 is disposed on the part of the transmission layer 14 beyond the reflection layer 13 so that the second phosphor layer 30 will not be blocked by the reflection layer 13 and the excitation light can more easily excite the second phosphor layer 30.
  • the distribution path of the transmission layer 14 and the distribution path of the reflection layer 13 are both ring-shaped, and the transmission layer 14 and the reflection layer 13 are coaxially arranged.
  • the outer diameter of the reflective layer 13 is smaller than the outer diameter of the transmissive layer 14, and the portion of the transmissive layer 14 extending beyond the edge of the reflective layer 13 (the portion of the transmissive layer 14 not covered by the reflective layer 13) is also ring-shaped.
  • the transmission layer 14 and the reflection layer 13 are connected by a connecting member 15.
  • the connecting member 15 includes a shaft portion 151, a first limiting portion 152 and a second limiting portion 153, and the first limiting portion 152 and the second limiting portion 153 are respectively connected to two ends of the shaft portion 151.
  • the transmission layer 14 and the reflection layer 13 are both sleeved on the outside of the shaft portion 151, and the transmission layer 14 and the reflection layer 13 are limited between the first limiting portion 152 and the second limiting portion 153.
  • the transmissive layer 14 and the reflective layer 13 can also be connected in other ways, for example, the two are glued together.
  • the connecting member 15 can be used to connect with a motor, so that the motor can drive the entire fluorescent wheel 100 to rotate.
  • the base 10 can also have other structures.
  • the base 10 includes a bottom layer 16 in addition to the transmission layer 14 and the reflection layer 13, and the reflection layer 13, the transmission layer 14 and the bottom layer 16 are stacked in sequence.
  • the reflective layer 13, the transmissive layer 14, and the bottom layer 16 are all sleeved on the outside of the shaft portion 151 of the connector 15, and the transmissive layer 14, the reflective layer 13 and the bottom layer 16 are confined to the first limiting portion of the connector 15 152 and the second limiting portion 153.
  • the bottom layer 16 is an aluminum substrate that is the same size as the reflective layer 13.
  • the first phosphor layer 20 and the second phosphor layer 30 are both ring-shaped, the first phosphor layer 20 and the second phosphor layer 30 are coaxially arranged, and the outer portion of the first phosphor layer 20 The diameter is equal to the inner diameter of the second phosphor layer 30. That is, the outer contour of the first phosphor layer 20 is aligned with the inner contour of the second phosphor layer 30, so that the first phosphor layer 20 and the second phosphor layer 30 can make full use of the excitation light.
  • first phosphor layer 20 and the second phosphor layer 30 are coaxially arranged, and the outer diameter of the first phosphor layer 20 is equal to the inner diameter of the second phosphor layer 30, that is, the first phosphor layer 20 and the second phosphor layer 30 are equal to each other.
  • the second phosphor layer 30 is just completely staggered in the radial direction of the substrate 10.
  • a film layer 141 is provided on the transmission layer 14, and the film layer 141 is used to transmit excitation light and reflect the fluorescence excited by the second phosphor layer 30.
  • the film layer 141 is provided on the surface of the transmissive layer 14 close to the reflective layer 13.
  • the film layer 141 may also be provided on the surface of the transmission layer 14 away from the reflective layer 13. In this case, the film layer 141 is located between the transmission layer 14 and the second phosphor layer 30.
  • the projection area of the second phosphor layer 30 in the axial direction of the phosphor wheel 100 is contained in the film layer 141.
  • This structure enables the film layer 141 to reflect more fluorescent light, so that the fluorescent light can be emitted more concentratedly in a specified direction.
  • the excitation light when the excitation light is irradiated on the fluorescent wheel 100, the excitation light will sequentially pass through the film layer 141 and the transmission layer 14 to irradiate the second phosphor layer 30 and excite fluorescence.
  • the film layer 141 can react to the excited fluorescence. Reflect to prevent the fluorescence from being emitted to the surroundings.
  • the arrangement of the film layer 141 makes the fluorescence excited by the second phosphor layer 30 controllable, and prevents the fluorescence from being emitted to the surroundings. If the second phosphor layer 30 is arranged on the light-facing surface of the excitation light transmission area 12, the light will be uncontrollable and will be emitted to the surroundings.
  • the film layer 141 is a plating film provided on the surface of the transmission layer 14 close to the reflection layer 13, and the molding process is simple and easy to be molded and manufactured.
  • the reflective layer 13 has a thicker laminate structure.
  • the reflective layer 13 can also be a coating provided on the transmission layer 14. The coating can reflect both excitation light and fluorescence. .
  • this embodiment provides a fluorescent wheel 100.
  • the difference from Embodiment 1 above is that the arrangement of the transmission layer 14 and the reflection layer 13 of the base 10 is different.
  • the transmission layer 14 of the base 10 has a ring shape, and the transmission layer 14 is sleeved on the outer periphery of the transmission layer 14.
  • the reflective layer 13 is the excitation light reflection area 11 and the transmission layer 14 is the excitation light transmission area 12.
  • the reflective layer 13 and the transmissive layer 14 are both plate-shaped structures, and the reflective layer 13 and the transmissive layer 14 can be made of multiple materials.
  • the reflective layer 13 is an aluminum substrate
  • the transmission layer 14 is a sapphire substrate.
  • the light facing surface of the excitation light reflection area 11 is the upper surface of the reflective layer 13, and the back light surface of the excitation light reflection area 11 is the lower surface of the reflection layer 13; the light facing surface of the excitation light transmission area 12 is the transmission layer 14 On the upper surface, the backlight surface of the excitation light transmission area 12 is the lower surface of the transmission layer 14.
  • the reflective layer 13 and the transmissive layer 14 can be connected in various ways. Exemplarily, the reflective layer 13 and the transmissive layer 14 are connected together by bonding.
  • the reflective layer 13 is also ring-shaped, and a connector 15 for connecting with the motor is provided at the center of the reflective layer 13.
  • the thickness of the reflective layer 13 is consistent with the thickness of the transmissive layer 14, and the upper surface of the reflective layer 13 is flush with the upper surface of the transmissive layer 14.
  • first phosphor layer 20 and the second phosphor layer 30 are both ring-shaped, the first phosphor layer 20 and the second phosphor layer 30 are coaxially arranged, and the outer diameter of the first phosphor layer 20 is the same as that of the second phosphor layer.
  • the inner diameters of the powder layer 30 are equal.
  • a film layer 141 is provided on the transmission layer 14, and the film layer 141 is used to transmit the excitation light and reflect the fluorescence excited by the second phosphor layer.
  • the film layer 141 is provided on the upper surface of the transmission layer 14. In other embodiments, the film layer may also be provided on the lower surface of the transmission layer 14. In this case, the film layer 141 is located between the transmission layer 14 and the second phosphor layer 30.
  • the projection area of the second phosphor layer 30 in the axial direction of the phosphor wheel 100 is contained in the film layer 141.
  • This structure enables the film layer 141 to reflect more fluorescent light, so that the fluorescent light can be emitted more concentratedly in a specified direction.
  • the film layer 141 is a plating film provided on the surface of the transmission layer 14 close to the reflection layer 13, and the molding process is simple and easy to be molded and manufactured.
  • the transmission layer 14 is sleeved on the outside of the reflection layer 13.
  • the reflective layer 13 may also be sleeved on the outside of the transmissive layer 14.
  • this embodiment provides a fluorescent wheel 100.
  • the excitation light reflection area 11 is provided with a transmission part 111 for the excitation light to pass through.
  • the excitation light that excites the first phosphor layer 20 can intermittently pass through the transmissive part 111, and the excitation light that passes through the transmissive part 111 can be used to supplement light.
  • the transmissive portion 111 is a light-transmitting hole opened on the transmissive layer 14 of the base 10.
  • the excitation light reflection area 11 of the fluorescent wheel 100 provided in Embodiment 2 can also be provided with a transmission part 111 for the excitation light to pass through.
  • this embodiment provides a fluorescent wheel 100.
  • the excitation light reflection area 11 is provided with a reflection structure 112.
  • the reflected light of the excitation light irradiated on the first phosphor layer 20 along the same incident direction and the reflected light of the excitation light irradiated on the reflective structure 112 form an angle.
  • the reflection structure 112 may be a first mirror or diffuse reflection particles or the like provided on the reflection layer 13.
  • the excitation light that excites the first phosphor layer 20 can be intermittently irradiated on the reflective structure 112, and the excitation light reflected by the reflective structure 112 can be used to supplement light.
  • a reflection structure 112 may also be provided in the excitation light reflection area 11 of the fluorescent wheel 100 provided in Embodiment 2.
  • the reflective structure 112 and the transmissive portion 111 may also be provided in the excitation light reflection area 11 at the same time.
  • this embodiment provides a light source module 200, which includes a first light source 210, a light combining system 220, and the fluorescent wheel 100 in any of the foregoing embodiments.
  • the first light source 210 is used to provide excitation light for the fluorescent wheel 100. A part of the excitation light emitted by the first light source 210 irradiates the first phosphor layer 20 and excites the first fluorescence, and a part of the excitation light emitted by the first light source 210 irradiates the second phosphor layer 30 through the excitation light transmission region 12 and excites A second fluorescence.
  • the light combining system 220 is used for combining the first fluorescent light and the second fluorescent light.
  • a part of the excitation light emitted by the first light source 210 is irradiated on the first phosphor layer 20 to excite the first fluorescence, and a part of the excitation light emitted by the second light source 240 is irradiated on the second phosphor layer 30 through the excitation light transmission region 12 and then excited
  • the second fluorescent light is emitted, and the first fluorescent light and the second fluorescent light are combined through the light combining system 220, which effectively reduces the temperature of the fluorescent wheel 100, improves the efficiency of the fluorescent powder, and can effectively improve the light efficiency of the system.
  • the first light source 210 may be a blue laser light source, an ultraviolet light source or an LED light source lamp.
  • the first light source 210 is a blue laser light source, and the excitation light emitted by the first light source 210 is a blue laser light.
  • the function of the light combining system 220 is to combine the first fluorescent light and the second fluorescent light.
  • the light combining system 220 includes a first converging plastic lens group 221, a dichroic mirror 222, a prism 223, a second converging plastic lens group 224, a filter color wheel 225, a light rod 226, and an optical path reflex lens group 227 .
  • the first fluorescent light sequentially passes through the first convergent shaping lens group 221, the dichroic mirror 222, the prism 223, the second convergent shaping lens group 224, and the color filter wheel 225 into the light rod 226.
  • the second fluorescent light enters the light rod 226 through the optical path turning lens group 227, the prism 223, the second converging shaping lens group 224, and the color filter wheel 225 in sequence.
  • the first fluorescent light excited by the first phosphor layer 20 enters the first converging and shaping lens group 221 after being reflected by the excitation light reflection area 11, and the first fluorescent light is converged and shaped by the first converging and shaping lens group 221, and then passes through the dichroic mirror 222 After entering the prism and passing through the prism 223, the second converging and shaping lens group 224 converges and reshapes the first fluorescent light. After the color filter wheel 225 filters the color of the first fluorescent light, the first fluorescent light finally enters the light rod 226 for homogenization. .
  • the second fluorescent light excited by the second phosphor layer 30 enters the prism 223 after changing the light path through the optical path turning lens group 227, and the second fluorescent light is totally reflected by the prism 223 and enters the second converging plastic lens group 224, the second converging plastic lens group 224 converges and shapes the second fluorescence again, and after the color filter color wheel filters the color of the first fluorescence, the first fluorescence finally enters the light rod 226 for homogenization.
  • the first convergent plastic lens group 221 includes a first plano-convex lens 2211 and a first biconvex lens 2212
  • the second convergent plastic lens group 224 is a second biconvex lens 2241.
  • the first fluorescence excited by the first phosphor layer 20 passes through the first plano-convex lens 2211, the first double-convex lens 2212, the dichroic mirror 222, the prism 223, the second double-convex lens 2241, and the filter after being reflected by the excitation light reflection area 11.
  • the color wheel 225 enters the light rod 226.
  • the optical path folding lens group 227 includes a second plano-convex lens 2271, a third double-convex lens 2272, a third mirror 2273, a fourth mirror 2274, and a fourth double-convex lens 2275.
  • the second fluorescent light excited by the second phosphor layer 30 sequentially passes through the second plano-convex lens 2271, the third lenticular lens 2272, the third mirror 2273, the fourth mirror 2274, the fourth lenticular lens 2275, the prism 223, and the second double convex lens 2271.
  • the convex lens 2241, the color filter wheel 225 enters the light rod 226.
  • the light source module 200 further includes an incident optical system 230.
  • the incident optical system 230 includes a focus collimating lens group 231 and a diffuser 232.
  • the excitation light emitted by the first light source 210 sequentially passes through the focus collimating lens group 231 and diffuses.
  • the sheet 232, the dichroic mirror 222, and the first convergent shaping lens group 221 irradiate the fluorescent wheel 100.
  • the blue laser light emitted by the first light source 210 is focused and collimated by the focus collimating lens group 231, it is homogenized by the diffuser 232, and then enters the first converging and shaping lens group 221 through the dichroic mirror 222, and then passes through the first lens group 221.
  • the convergent plastic lens group 221 is converged and shaped and irradiated on the fluorescent wheel 100.
  • a suitable spot size can be obtained.
  • the size of the light spot can be twice the optimal light spot, half of the light spot is focused on the first phosphor layer 20, and the other half of the light spot is focused on the second phosphor layer 30.
  • the focus collimating lens group 231 includes a third plano-convex lens 2311 and a plano-concave lens 2312.
  • the blue laser light emitted by the first light source sequentially passes through the third plano-convex lens 2311, the plano-concave lens 2312, the diffuser 232, the dichroic mirror 222, the first plano-convex lens 2211, and the first biconvex lens 2212 to irradiate the fluorescent wheel 100.
  • the fluorescent wheel 100 in the light source module 200 is the fluorescent wheel 100 provided in Embodiment 1 or Embodiment 2 above.
  • the first light source 210 emits blue laser light (excitation light) after irradiating the excitation light reflection area 11.
  • the reflected light cannot enter the prism 223 through the dichroic mirror 222, and only irradiate the excitation light transmission area.
  • the blue laser on 12 enters the prism 223 through the optical path turning lens group 227.
  • a second light source 240 can be provided for light compensation.
  • the excitation light emitted by the second light source 240 has the same color as the excitation light emitted by the first light source 210, that is, the excitation light emitted by the second light source 240 is a blue laser.
  • the blue laser light emitted by the second light source 240 enters the light rod 226 through the dichroic mirror 222, the prism 223, the second converging and shaping lens group 224, and the color filter wheel 225 in sequence.
  • the characteristic of the dichroic mirror 222 is blue light-transmitting and anti-fluorescence.
  • the blue laser light emitted by the first light source 210 is focused and collimated by the focusing and collimating lens group 231, it is homogenized by the diffuser 232, and then passes through the dichroic mirror 222 to enter the first converging and shaping lens group 221.
  • the blue laser excites the first phosphor layer, the first fluorescent light reflected by the excitation light reflection area 11 of the fluorescent wheel 100 enters the prism 223 after being reflected by the dichroic mirror 222.
  • the characteristics of the dichroic mirror 222 can also be fluorescent and blue light.
  • the blue laser light emitted by the first light source 210 is focused and collimated by the focusing and collimating lens group 231, and then homogenized by the diffuser 232, and then reflected by the dichroic mirror 222, and enters the first convergent shaping Lens group 221.
  • the blue laser excites the first phosphor layer
  • the first fluorescence reflected by the excitation light reflection area 11 of the phosphor wheel 100 enters the prism 223 through the dichroic mirror 222.
  • the optical path folding lens group 227 further includes a fifth mirror 2276.
  • the second fluorescent light excited by the second phosphor layer 30 sequentially passes through the second plano-convex lens 2271, the third lenticular lens 2272, the third mirror 2273, the fourth mirror 2274, the fourth lenticular lens 2275, the fifth mirror 2276,
  • the prism 223, the second biconvex lens 2241, and the color filter wheel 225 enter the light rod 226.
  • blue light compensation can also be performed by other methods.
  • the fluorescent wheel 100 in the light source module 200 is the fluorescent wheel 100 provided in Embodiment 3 above, and the laser reflection area of the fluorescent wheel 100 is provided with a transmission part 111.
  • the blue laser light that excites the first phosphor layer 20 can intermittently pass through the transmission part 111, and the excitation light passing through the transmission part 111 enters the prism 223 through the optical path folding lens group 227 to perform blue light compensation.
  • the fluorescent wheel 100 in the light source module 200 is the fluorescent wheel 100 provided in the above-mentioned embodiment 4, and the excitation light reflection area 11 of the fluorescent wheel 100 is provided with a reflective structure 112.
  • the light source module 200 further includes a second reflector 250, and the reflected light after the excitation light emitted by the first light source 210 irradiates the reflective structure 112 sequentially passes through the second reflector 250, the dichroic mirror 222, the prism 223, and the second reflector 250.
  • the convergent plastic lens group 224 and the filter color wheel 225 enter the light rod 226.
  • the blue laser light that excites the first phosphor layer 20 can be irradiated on the reflective structure 112 intermittently.
  • the blue laser light is reflected by the reflective structure 112 and then sequentially passes through the dichroic mirror 222, the prism 223, and the second convergent
  • the shaping lens group 224 and the color filter wheel 225 enter the light rod 226 to perform blue light compensation.
  • the prism 223 can also be replaced by other lenses, such as a mirror 228.
  • the reflecting mirror 228 includes a transmissive film 2281 and a reflective film 2282.
  • the first fluorescent light penetrates the transmission film 2281 and enters the second convergent plastic lens group 224, and the second fluorescent light is reflected by the reflective film 2282 and enters the second convergent plastic lens group 224.
  • This embodiment provides a projector, including any one of the possible light source modules 200 in the fifth embodiment.
  • Other structures of the projector except for the light source module 200 can be referred to related technologies, which will not be repeated here.

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Abstract

公开了一种荧光轮、光源模组和投影机，属于投影技术领域。一种荧光轮（100），包括基体（10）、第一荧光粉层（20）和第二荧光粉层（30），基体（10）包括激发光反射区（11）和激发光透射区（12）。第一荧光粉层（20）设置于激发光反射区（11）的迎光面且沿基体（10）的圆周方向分布。第二荧光粉层（30）设置于激发光透射区（12）的背光面且沿基体（10）的圆周方向分布。第一荧光粉层（20）与第二荧光粉层（30）在基体（10）的径向上至少部分错开。激发光照射在荧光轮（100）上后，激发光照射于荧光轮（100）上的光斑一部分位于激发光反射区（11）并激发第一荧光，一部分位于激发光透射区（12）并激发第二荧光，有效降低了荧光轮（100）的温度，提高了荧光粉效率。

Description

一种荧光轮、光源模组和投影机 技术领域
本申请涉及投影技术领域，具体而言，涉及一种荧光轮、光源模组和投影机。
背景技术
在现有的投影机中，荧光轮作为第二光源，通过激发光激发荧光粉产生红光、绿光或黄光。现有的荧光轮一般分为透射式荧光轮和反射式荧光轮，当聚焦到荧光轮上的光斑能量过高时，将导致荧光轮温度过高，荧光粉效率低，甚至将荧光轮上的荧光粉烧毁。当聚焦到荧光轮上的光斑增大后，荧光粉温度低，激发的荧光光通量高，但在投影机系统中受限于光学拓展量，激发后的荧光在系统中的利用效率反而降低，因此存在最佳光斑尺寸大小。
发明内容
本申请实施例提供一种荧光轮、光源模组和投影机，以改善光源能量过高导致荧光粉效率低的问题。
第一方面，本申请实施例提供一种荧光轮，包括基体、第一荧光粉层和第二荧光粉层，所述基体包括激发光反射区和激发光透射区；
所述第一荧光粉层设置于所述激发光反射区的迎光面且沿所述基体的圆周方向分布；
所述第二荧光粉层设置于所述激发光透射区的背光面且沿所述基体的圆周方向分布；
所述第一荧光粉层与所述第二荧光粉层在所述基体的径向上至少部分错开。
上述技术方案中，激发光反射区的迎光面设有第一荧光粉层，激发光透射区的背光面设有第二荧光粉层，第一荧光粉层与第二荧光粉层在基体的径向上至少部分错开，使得激发光照射在荧光轮上后，激发光一部分照射于第一荧光粉层后将激发出第一荧光，激发光一部透过激发光透射区照射于第二荧光粉层后将激发出第二荧光，即激发光照射于荧光轮上的光斑一部分位于激发光反射区并激发第一荧光，一部分位于激发光透射区并激发第二荧光，有效降低了荧光轮的温度，提高了荧光粉效率。同时透射区和反射区的光斑大小都满足系统的最佳光斑大小，通过镜片等合光光路后将透射激发的第二荧光和反射激发的第一荧光后合并为一个光路，从而可得到约2倍的激发效率。
在本申请的一些实施例中，所述基体包括反射层和透射层；
所述反射层与所述透射层层叠设置，透射层被所述反射层覆盖的部分为所述激发光反射区，或所述反射层为所述激发光反射区，所述透射层未被所述反射层覆盖的部分为激发光透射区。
上述技术方案中，反射层与透射层层叠设置，结构简单，组装方便。此外，这种结构还可以增大第一荧光粉层与第二荧光粉层之间的轴向距离，有利于降低荧光轮的温度。
在本申请的一些实施例中，所述透射层延伸超出所述反射层的边缘，所述第二荧光粉层设置于所述透射层超出所述反射层的部分。
上述技术方案中，第二荧光粉层设置于透射层超出反射层的部分，使得第二荧光粉层不会被反射层遮挡，激发光更容易激发第二荧光粉层。
在本申请的一些实施例中，所述基体包括反射层和透射层；
所述透射层为环形，所述透射层套接于所述反射层的外周缘，所述反射层为所述激发光反射区，所述透射层为所述激发光透射区。
上述技术方案中，透射层为环形，透射层套接于反射层的外周缘，可有效减小荧光轮的体积。
在本申请的一些实施例中，所述透射层上设有膜层；
所述膜层用于透射激发光，反射所述第二荧光粉层激发出的荧光。
上述技术方案中，透射层上设有膜层，膜层可对第二荧光粉层激发出的荧光进行反射，避免荧光向四周射出。
在本申请的一些实施例中，所述第二荧光粉层在所述荧光轮轴向上的投影区域被包含在所述膜层内。
上述技术方案中，第二荧光粉层在荧光轮轴向上的投影区域被包含在膜层内，膜层能够对更多的荧光进行反射，使得荧光能够更加集中的沿指定方向射出。
在本申请的一些实施例中，所述膜层为设于所述透射层上的镀膜。
上述技术方案中，透射层上的膜层为镀膜，成型工艺简单，易于成型制造。
在本申请的一些实施例中，所述第一荧光粉层的分布路径与所述第二荧光粉层的分布路径均为环形，所述第一荧光粉层与所述第二荧光粉层同轴设置，所述第一荧光粉层的外径与所述第二荧光粉层的内径相等。
上述技术方案中，第一荧光粉层的外径与第二荧光粉层的内径相等，即第一荧光粉层的外轮廓与第二荧光粉层的内轮廓对齐，使得第一荧光粉层和第二荧光粉层能够充分利用激发光。
在本申请的一些实施例中，所述激发光反射区设有供激发光透过的透射部。
上述技术方案中，激发光反射区设有透射部，激发第一荧光粉层的激发光可透过透射部，可利用透过透射部的激发光进行补光。
在本申请的一些实施例中，所述激发光反射区设有反射结构；
沿同一入射方向照射在第一荧光粉层上的激发光的反射光线与照射在反射结构上的激发光的反射光线呈夹角。
上述技术方案中，激发光反射区设有反射结构，反射结构可对激发光进行反射，可利用反射结构反射的激发光进行补光。
在本申请的一些实施例中，所述反射结构包括第一反射镜或漫反射粒子。
上述技术方案中，反射结构为第一反射镜或漫反射粒子，结构简单，易于实现。
第二方面，本申请实施例提供一种光源模组，包括第一光源、合光系统和荧光轮；
所述荧光轮包括基体、第一荧光粉层和第二荧光粉层，所述基体包括激发光反射区和激发光透射区；所述第一荧光粉层设置于所述激发光反射区的迎光面且沿所述基体的圆周方向分布；所述第二荧光粉层设置于所述激发光透射区的背光面且沿所述基体的圆周方向分布；所述第一荧光粉层与所述第二荧光粉层在所述基体的径向上至少部分错开；
所述第一光源发出的激发光一部分照射于第一荧光粉层并激发出第一荧光，所述第一光源发出的激发光的一部分透过所述激发光透射区照射于所述第二荧光粉层并激发出第二荧光；
所述合光系统用于将所述第一荧光与所述第二荧光进行合束。
上述技术方案中，第一光源发出的激发光一部分照射于第一荧光粉层并激发出第一荧光，第二光源发出的激发光的一部分透过激发光透射区照射于第二荧光粉层并激发出第二荧光，在通过合光系统将第 一荧光与第二荧光进行合束，有效降低了荧光轮的温度，提高了荧光粉效率，可有效提高系统的光效。
在本申请的一些实施例中，所述合光系统包括第一汇聚整形镜片组、二向色镜、棱镜、第二汇聚整形镜片组、滤色色轮、光棒和光路折转镜片组；
所述第一荧光依次经过所述第一汇聚整形镜片组、所述二向色镜、所述棱镜、所述第二汇聚整形镜片组、所述滤色色轮进入所述光棒；
所述第二荧光依次经过所述光路折转镜片组、所述棱镜、所述第二汇聚整形镜片组、所述滤色色轮进入所述光棒。
上述技术方案中，第一荧光粉层激发出的第一荧光经过激发光反射区反射后进入第一汇聚整形镜片组，第一荧光经第一汇聚整形镜片组汇聚整形后，经二向色镜进入棱镜，透过棱镜后，第二汇聚整形镜片组对第一荧光再次汇聚整形，滤色色轮对第一荧光的颜色进行过滤后，第一荧光最终进入光棒中进行匀光。
第二荧光粉层激发出的第二荧光经过光路折转镜片组改变光路后进入棱镜，第二荧光由棱镜全反射后进入第二汇聚整形镜片组，第二汇聚整形镜片组对第二荧光再次汇聚整形，滤色色轮对第一荧光的颜色进行过滤后，第一荧光最终进入光棒中进行匀光。
在本申请的一些实施例中，所述光源模组还包括第二光源，所述第二光源发出的激发光依次经过所述二向色镜、所述棱镜、所述第二汇聚整形镜片组、所述滤色色轮进入所述光棒。
上述技术方案中，第二光源发出的激发光依次经过二向色镜、棱镜、第二汇聚整形镜片组、滤色色轮进入光棒，通过设置第二光源来补偿激发光。
在本申请的一些实施例中，所述激发光反射区设有供激发光透过的透射部；
所述第一光源发出的激发光透过所述透射部依次经过所述光路折转镜片组、所述棱镜、所述第二汇聚整形镜片组、所述滤色色轮进入所述光棒。
上述技术方案中，第一光源发出的激发光透过透射部依次经过光路折转镜片组、棱镜、第二汇聚整形镜片组、滤色色轮进入光棒，以补偿激发光。
在本申请的一些实施例中，所述激发光反射区设有反射结构，沿同一入射方向照射在第一荧光粉层上的激发光的反射光线与照射在反射结构上的激发光的反射光线呈夹角；
所述光源模组还包括第二反射镜；
所述第一光源发出的激发光照射于所述反射结构后的反射光线依次经过所述第二反射镜、所述二向色镜、所述棱镜、所述第二汇聚整形镜片组、所述滤色色轮进入所述光棒。
上述技术方案中，第一光源发出的部分激发光照射于反射结构后的反射光线依次经过第二反射镜、二向色镜、棱镜、第二汇聚整形镜片组、滤色色轮进入光棒，以补偿激发光。
在本申请的一些实施例中，所述光源模组还包括入射光学系统；
所述入射光学系统包括聚焦准直镜片组和扩散片，所述第一光源发出的激发光依次经过所述聚焦准直镜片组、所述扩散片、所述二向色镜和所述第一汇聚整形镜片组照射于所述荧光轮。
上述技术方案中，第一光源发出的激发光经过聚焦准直镜片组聚焦准直后，再通过扩散片进行均匀化处理，再经过二向色镜进入第一汇聚整形镜片组，再通过第一汇聚整形镜片组汇聚整形后照射于荧光轮上。激发光通过第一汇聚整形镜片组汇聚后，可以得到合适的光斑 大小。光斑的大小可以是最佳光斑的两倍，光斑的一半聚焦到第一荧光粉层上，光斑的另一半聚焦到第二荧光粉层上。
第三方面，本申请实施例提供一种投影机，包括上述第二方面实施例提供的光源模组。
上述技术方案中，投影机具有上述光源模组，有效降低了荧光轮的温度，提高了荧光粉效率，可有效提高系统的光效。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，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，还可以根据这些附图获得其他相关的附图。
图1为本申请实施例1提供的荧光轮的第一种可能的结构示意图；
图2为图1所示的A向视图；
图3为本申请实施例1提供的荧光轮的第二种可能的结构示意图；
图4为本申请实施例1提供的荧光轮的第三种可能的结构示意图；
图5为本申请实施例1提供的荧光轮的第四种可能的结构示意图；
图6为本申请实施例2提供的荧光轮的结构示意图；
图7为本申请实施例3提供的荧光轮的结构示意图；
图8为本申请实施例4提供的荧光轮的结构示意图；
图9为本申请实施例5提供的光源模组的第一种可能的结构示意图；
图10为本申请实施例5提供的光源模组的第二种可能的结构示意图；
图11为本申请实施例5提供的光源模组的第三种可能的结构示意图；
图12为本申请实施例5提供的光源模组的第四种可能的结构示意图；
图13为本申请实施例5提供的光源模组的第五种可能的结构示意图。
图标：100-荧光轮；10-基体；11-激发光反射区；111-透射部；112-反射结构；12-激发光透射区；13-反射层；14-透射层；141-膜层；15-连接件；151-轴部；152-第一限位部；153-第二限位部；16-底层；20-第一荧光粉层；30-第二荧光粉层；200-光源模组；210-第一光源；220-合光系统；221-第一汇聚整形镜片组；2211-第一平凸透镜；2212-第一双凸透镜；222-二向色镜；223-棱镜；224-第二汇聚整形镜片组；2241-第二双凸透镜；225-滤色色轮；226-光棒；227-光路折转镜片组；2271-第二平凸透镜；2272-第三双凸透镜；2273-第三反射镜；2274-第四反射镜；2275-第四双凸透镜；2276-第五反射镜；228-反光镜；2281-透射膜；2282-反射膜；230-入射光学系统；231-聚焦准直镜片组；2311-第三平凸透镜；2312-平凹透镜；232-扩散片；240-第二光源；250-第二反射镜。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本申请实施例的描述中，需要说明的是，指示方位或位置关系为基于附图所示的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，或者是本领域技术人员惯常理解的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于区分描述，而不能理解为指示或暗示相对重要性。
实施例1
如图1、图2所示，本实施例提供一种荧光轮100，包括基体10、第一荧光粉层20和第二荧光粉层30，基体10包括激发光反射区11和激发光透射区12。第一荧光粉层20设置于激发光反射区11的迎光面且沿基体10的圆周方向分布。第二荧光粉层30设置于激发光透射区12的背光面且沿基体10的圆周方向分布。第一荧光粉层20与第二荧光粉层30在基体10的径向上至少部分错开。
激发光照射在荧光轮100上后，激发光一部分照射于第一荧光粉层20后将激发出第一荧光，激发光一部透过激发光透射区12照射于 第二荧光粉层30后将激发出第二荧光，即激发光照射于荧光轮100上的光斑一部分位于激发光反射区11并激发第一荧光，一部分位于激发光透射区12并激发第二荧光，解决了因光斑能量过高而导致荧光轮100的温度较高的问题，提高了荧光粉效率。此外，第一荧光和第二荧光可通过合光系统进行合束，可有效提高光效。
需要说明的是，激发光反射区11即为基体10能够反射激发光的部分，激发光透射区12即为基体10能够透射激发光的区域。
第一荧光粉层20即为涂覆于激发光反射区11的荧光粉，第一荧光粉层20中的荧光粉可以是一种颜色，也可以是多种颜色。若第一荧光粉层20中的荧光粉为多种颜色，比如红、黄、绿，则可将第一荧光粉层20划分为三个区域，每个区域对应一种颜色的荧光粉。
第二荧光粉层30即为涂覆于激发光透射区12的荧光粉，第二荧光粉层30中的荧光粉可以是一种颜色，也可以是多种颜色。若第二荧光粉层30中的荧光粉为多种颜色，比如红、黄、绿，则可将第二荧光粉层30划分为三个区域，每个区域对应一种颜色的荧光粉。
本实施例中，第一荧光粉层20与第二荧光粉层30均为红、黄、绿三种颜色的荧光粉，第一荧光粉层20与第二荧光粉层30中相同颜色的区域相对应。
激发光照射于第一荧光粉层20与第二荧光粉层30均可激发出荧光，激发光可以是蓝激光、紫外光等。本实施例中，示例性的，激发光为蓝激光。
进一步地，继续参照图1，基体10包括反射层13和透射层14。反射层13与透射层14层叠设置，透射层14被反射层13覆盖的部分为激发光反射区11，或反射层13为激发光反射区11，透射层14未被反射层13覆盖的部分为激发光透射区12。
反射层13与透射层14层叠设置，结构简单，组装方便。此外这种结构还可以增大第一荧光粉层20与第二荧光粉层30之间的轴向距离，有利于降低荧光轮100的温度。
本实施例中，反射层13和透射层14均为板状结构，反射层13和透射层14可以是多种材质。示例性的，反射层13为铝基板，透射层14为蓝宝石基板。
本实施例中，反射层13位于透射层14的上侧，则反射层13为激发光反射区11。
在这种情况下，激发光反射区11的迎光面即为反射层13厚度方向上远离透射层14的表面，激发光透射区12的背光面即透射层14未被反射层13覆盖的部分厚度方向上远离反射层13的表面；激发光透射区12的迎光面即为透射层14未被反射层13覆盖的部分厚度方向上靠近反射层13的表面。可理解的，第一荧光粉层20设于反射层13远离透射层14的表面，第二荧光粉层30设于透射层14远离反射层13的表面。
当然，如图3所示，反射层13也可位于透射层14的下侧，透射层14被所述反射层13覆盖的部分为激发光反射区11。可理解的，第一荧光粉层20设于透射层14远离反射层13的表面，第二荧光粉层30设于透射层14靠近反射层13的表面。
可选地，继续参照图1，透射层14延伸超出反射层13的边缘，第二荧光粉层30设置于透射层14超出反射层13的部分。第二荧光粉层30设置于透射层14超出反射层13的部分，使得第二荧光粉层30不会被反射层13遮挡，激发光更容易激发第二荧光粉层30。
透射层14的分布路径与反射层13的分布路径均为环形，透射层14与反射层13同轴设置。反射层13的外径小于透射层14的外径， 透射层14延伸超出反射层13的边缘的部分(透射层14未被反射层13覆盖的部分)也为环形。
本实施例中，透射层14与反射层13通过连接件15连接。连接件15包括轴部151、第一限位部152和第二限位部153，第一限位部152和第二限位部153分别连接于轴部151的两端。透射层14和反射层13均套设于轴部151的外侧，透射层14和反射层13被限制在第一限位部152与第二限位部153之间。在其他是实施例，透射层14与反射层13也可通过其他方式连接，比如两者粘接在一起。
连接件15除了起到连接透射层14与反射层13的作用以外，连接件15可用于与电机连接，从而通过电机来带动整个荧光轮100转动。
当然，基体10还可以为其他结构，比如，如图4所示，基体10除了包括透射层14和反射层13以外，还包括底层16，反射层13、透射层14和底层16依次层叠。反射层13、透射层14和底层16三者均套设于连接件15的轴部151的外侧，透射层14、反射层13和底层16三者被限制于连接件15的第一限位部152与第二限位部153之间。示例性的，底层16为与反射层13等大的铝基板。
进一步地，继续参照图1，第一荧光粉层20与第二荧光粉层30均为环形，第一荧光粉层20与第二荧光粉层30同轴设置，第一荧光粉层20的外径与第二荧光粉层30的内径相等。即第一荧光粉层20的外轮廓与第二荧光粉层30的内轮廓对齐，使得第一荧光粉层20和第二荧光粉层30能够充分利用激发光。
需要说明的是，第一荧光粉层20与第二荧光粉层30同轴设置，第一荧光粉层20的外径与第二荧光粉层30的内径相等，即第一荧光粉层20与第二荧光粉层30在基体10的径向上刚好完全错开。
可选地，如图1所示，透射层14上设有膜层141，膜层141用于透射激发光，反射第二荧光粉层30激发出的荧光。本实施例中，膜层141设于透射层14靠近于反射层13的表面。在其他实施例中，膜层141也可以设于透射层14远离反射层13的表面，此时，膜层141则位于透射层14与第二荧光粉层30之间。
可选地，第二荧光粉层30在荧光轮100轴向上的投影区域被包含在膜层141内。这种结构使得膜层141能够对更多的荧光进行反射，使得荧光能够更加集中的沿指定方向射出。
继续参照图1，激发光照射于荧光轮100时，激发光将依次透过膜层141、透射层14照射于第二荧光粉层30上并激发出荧光，膜层141可对激发出的荧光进行反射，避免荧光向四周射出。
当然，正是因为第二荧光粉层30设置在激发光透射区12的背光面，膜层141的设置使得第二荧光粉层30激发出的荧光可控，避免荧光向四周射出。若第二荧光粉层30设置到激发光透射区12的迎光面，光会不可控，将向四周射出。
可选地，膜层141为设于透射层14靠近反射层13的表面上的镀膜，成型工艺简单，易于成型制造。
本实施例中，反射层13为较厚的层板结构，当然，如图5所示，反射层13也可以是设于透射层14上的镀膜，该镀膜既可以反射激发光又可以反射荧光。
实施例2
如图6所示，本实施例提供一种荧光轮100，与上述实施例1的区别在于，基体10的透射层14与反射层13的布置方式不同。
本实施例中，基体10的透射层14为环形，透射层14套接于透射层14的外周缘。在这种情况下，反射层13为激发光反射区11，透射层14为激发光透射区12。
本实施例中，反射层13和透射层14均为板状结构，反射层13和透射层14可以是多种材质。示例性的，反射层13为铝基板，透射层14为蓝宝石基板。
激发光反射区11的迎光面即为反射层13的上表面，激发光反射区11的背光面即为反射层13的下表面；激发光透射区12的迎光面即为透射层14的上表面，激发光透射区12的背光面即为透射层14的下表面。
反射层13与透射层14可以通过多种方式连接。示例性的，反射层13与透射层14通过粘接的方式连接在一起。
本实施例中，反射层13也为环形，反射层13的中心位置设有用于与电机连接的连接件15。反射层13的厚度与透射层14的厚度一致，反射层13的上表面与透射层14的上表面平齐。
进一步地，第一荧光粉层20与第二荧光粉层30均为环形，第一荧光粉层20与第二荧光粉层30同轴设置，第一荧光粉层20的外径与第二荧光粉层30的内径相等。
可选地，透射层14上设有膜层141，膜层141用于透射激发光，反射第二荧光粉层激发出的荧光。
本实施例中，膜层141设于透射层14上表面。在其他实施例中，膜层也可以设于透射层14的下表面，此时，膜层141则位于透射层14与第二荧光粉层30之间。
可选地，第二荧光粉层30在荧光轮100轴向上的投影区域被包含在膜层141内。这种结构使得膜层141能够对更多的荧光进行反射，使得荧光能够更加集中的沿指定方向射出。
可选地，膜层141为设于透射层14靠近反射层13的表面上的镀膜，成型工艺简单，易于成型制造。
本实施例中，透射层14套接于反射层13的外侧。在其他实施例中，也可以是反射层13套接于透射层14的外侧。
实施例3
如图7所示，本实施例提供一种荧光轮100，与上述实施例1的区别在于，激发光反射区11设有供激发光透过的透射部111。
在荧光轮100转动过程中，激发第一荧光粉层20的激发光可间歇地透过透射部111，可利用透过透射部111的激发光进行补光。
本实施例中，透射部111为开设于基体10的透射层14上的透光孔。透光孔可以是一个、两个或多个。示例性的，透光孔为两个，两个透光孔关于基体10中轴线中心对称。
当然，也可以在实施例2提供的荧光轮100的激发光反射区11设置供激发光透过的透射部111。
实施例4
如图8所示，本实施例提供一种荧光轮100，与上述实施例1的区别在于，激发光反射区11设有反射结构112。沿同一入射方向照射在第一荧光粉层20上的激发光的反射光线与照射在反射结构112上的激发光的反射光线呈夹角。
反射结构112可以是设置在反射层13上的第一反射镜或漫反射粒子等。
在荧光轮100转动过程中，激发第一荧光粉层20的激发光可间歇地照射于反射结构112上，可利用反射结构112反射的激发光进行补光。
当然，也可以在实施例2提供的荧光轮100的激发光反射区11设置反射结构112。
在其他实施例中，也可以是在激发光反射区11同时设置反射结构112和透射部111。
实施例5
如图9-图12所示，本实施例提供一种光源模组200，包括第一光源210、合光系统220和上述任意实施例中的荧光轮100。
第一光源210用于为荧光轮100提供激发光。第一光源210发出的激发光一部分照射于第一荧光粉层20并激发出第一荧光，第一光源210发出的激发光的一部分透过激发光透射区12照射于第二荧光粉层30并激发出第二荧光。合光系统220用于将第一荧光与第二荧光进行合束。
第一光源210发出的激发光一部分照射于第一荧光粉层20后激发出第一荧光，第二光源240发出的激发光的一部分透过激发光透射区12照射于第二荧光粉层30后激发出第二荧光，在通过合光系统220将第一荧光与第二荧光进行合束，有效降低了荧光轮100的温度，提高了荧光粉效率，可有效提高系统的光效。
其中，第一光源210可以是蓝激光光源、紫外光源或LED光源灯。本实施例中，第一光源210为蓝激光光源，第一光源210发出的激发光即为蓝激光。
合光系统220的作用是将第一荧光与第二荧光进行合束。本实施例中，合光系统220包括第一汇聚整形镜片组221、二向色镜222、棱镜223、第二汇聚整形镜片组224、滤色色轮225、光棒226和光路折转镜片组227。第一荧光依次经过第一汇聚整形镜片组221、二向色镜222、棱镜223、第二汇聚整形镜片组224、滤色色轮225进入光棒226。第二荧光依次经过光路折转镜片组227、棱镜223、第二汇聚整形镜片组224、滤色色轮225进入光棒226。
第一荧光粉层20激发出的第一荧光经过激发光反射区11反射后进入第一汇聚整形镜片组221，第一荧光经第一汇聚整形镜片组221汇聚整形后，经二向色镜222进入棱镜，透过棱镜223后，第二汇聚 整形镜片组224对第一荧光再次汇聚整形，滤色色轮225对第一荧光的颜色进行过滤后，第一荧光最终进入光棒226中进行匀光。
第二荧光粉层30激发出的第二荧光经过光路折转镜片组227改变光路后进入棱镜223，第二荧光由棱镜223全反射后进入第二汇聚整形镜片组224，第二汇聚整形镜片组224对第二荧光再次汇聚整形，滤色色轮对第一荧光的颜色进行过滤后，第一荧光最终进入光棒226中进行匀光。
示例性的，第一汇聚整形镜片组221包括第一平凸透镜2211和第一双凸透镜2212，第二汇聚整形镜片组224为第二双凸透镜2241。第一荧光粉层20激发出的第一荧光经过激发光反射区11反射后依次经过第一平凸透镜2211、第一双凸透镜2212、二向色镜222、棱镜223、第二双凸透镜2241、滤色色轮225进入光棒226。
示例性的，光路折转镜片组227包括第二平凸透镜2271、第三双凸透镜2272、第三反射镜2273、第四反射镜2274和第四双凸透镜2275。第二荧光粉层30激发出的第二荧光依次经过第二平凸透镜2271、第三双凸透镜2272、第三反射镜2273、第四反射镜2274、第四双凸透镜2275、棱镜223、第二双凸透镜2241、滤色色轮225进入光棒226。
本实施例中，光源模组200还包括入射光学系统230，入射光学系统230包括聚焦准直镜片组231和扩散片232，第一光源210发出的激发光依次经过聚焦准直镜片组231、扩散片232、二向色镜222、第一汇聚整形镜片组221照射于荧光轮100上。
第一光源210发出的蓝激光经过聚焦准直镜片组231聚焦准直后，再通过扩散片232进行均匀化处理，再经过二向色镜222进入第一汇聚整形镜片组221，再通过第一汇聚整形镜片组221汇聚整形后照射于荧光轮100上。蓝激光通过第一汇聚整形镜片组221汇聚后， 可以得到合适的光斑大小。光斑的大小可以是最佳光斑的两倍，光斑的一半聚焦到第一荧光粉层20上，光斑的另一半聚焦到第二荧光粉层30上。
示例性的，聚焦准直镜片组231包括第三平凸透镜2311和平凹透镜2312。第一光源发出的蓝激光依次经过第三平凸透镜2311、平凹透镜2312、扩散片232、二向色镜222、第一平凸透镜2211、第一双凸透镜2212照射于荧光轮100上。
如图9所示，光源模组200中的荧光轮100为上述实施例1或实施例2提供的荧光轮100。对于这种结构的荧光轮100，第一光源210发出蓝激光(激发光)照射于激发光反射区11上后的反射光线无法通过二向色镜222进入棱镜223，只有照射于激发光透射区12上的蓝激光经过光路折转镜片组227进入棱镜223。
在这种情况下，可设置第二光源240进行光补偿，第二光源240发出的激发光与第一光源210发出的激发光的颜色相同，即第二光源240发出的激发光为蓝激光。第二光源240发出的蓝激光依次经过二向色镜222、棱镜223、第二汇聚整形镜片组224、滤色色轮225进入光棒226。
图9中，二向色镜222的特性为透蓝光反荧光。第一光源210发出的蓝激光经过聚焦准直镜片组231聚焦准直后，再通过扩散片232进行均匀化处理，再透过二向色镜222，进入第一汇聚整形镜片组221。蓝激光激发第一荧光粉层后，由荧光轮100的激发光反射区11反射的第一荧光经过二向色镜222反射后进入至棱镜223。
当然，二向色镜222的特性也可以是透荧光反蓝光。如图10所示，第一光源210发出的蓝激光经过聚焦准直镜片组231聚焦准直后，再通过扩散片232进行均匀化处理，再经过二向色镜222反射，进入第一汇聚整形镜片组221。蓝激光激发第一荧光粉层后，由荧光轮100 的激发光反射区11反射的第一荧光透过二向色镜222进入至棱镜223。
在这种情况下，光路折转镜片组227还包括第五反射镜2276。第二荧光粉层30激发出的第二荧光依次经过第二平凸透镜2271、第三双凸透镜2272、第三反射镜2273、第四反射镜2274、第四双凸透镜2275、第五反射镜2276、棱镜223、第二双凸透镜2241、滤色色轮225进入光棒226。
除了通过增加第二光源240的方式进行蓝光补偿以外，还可通过其他方式进行蓝光补偿。
如图11所示，光源模组200中的荧光轮100为上述实施例3提供的荧光轮100，荧光轮100的激光反射区设有透射部111。
在荧光轮100转动过程中，激发第一荧光粉层20的蓝激光可间歇地透过透射部111，透过透射部111的激发光经过光路折转镜片组227进入棱镜223，进行蓝光补偿。
如图12所示，光源模组200中的荧光轮100为上述实施例4提供的荧光轮100，荧光轮100的激发光反射区11设有反射结构112。此外，光源模组200还包括第二反射镜250，第一光源210发出的激发光照射于反射结构112后的反射光线依次经过第二反射镜250、二向色镜222、棱镜223、第二汇聚整形镜片组224、滤色色轮225进入光棒226。
在荧光轮100转动过程中，激发第一荧光粉层20的蓝激光可间歇地照射于反射结构112上，蓝激光经反射结构112反射后依次经过二向色镜222、棱镜223、第二汇聚整形镜片组224、滤色色轮225进入光棒226，进行蓝光补偿。
需要说明的是，在上述的合光系统220中，棱镜223也可以用其他镜片代替，比如反光镜228。如图13所示，反光镜228包括透射 膜2281和反射膜2282。第一荧光透过透射膜2281进入第二汇聚整形镜片组224，第二荧光经反射膜2282反射进入第二汇聚整形镜片组224。
实施例6
本实施例提供一种投影机，包括上述实施例5中任意一种可能的光源模组200。投影机中除了光源模组200以外的其他结构可参见相关技术，在此不再赘述。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种荧光轮，其特征在于，包括：
    基体，所述基体包括激发光反射区和激发光透射区；
    第一荧光粉层，所述第一荧光粉层设置于所述激发光反射区的迎光面且沿所述基体的圆周方向分布；以及
    第二荧光粉层，所述第二荧光粉层设置于所述激发光透射区的背光面且沿所述基体的圆周方向分布；
    其中，所述第一荧光粉层与所述第二荧光粉层在所述基体的径向上至少部分错开。
  2. 根据权利要求1所述的荧光轮，其特征在于，所述基体包括反射层和透射层；
    所述反射层与所述透射层层叠设置，所述透射层被所述反射层覆盖的部分为所述激发光反射区，或所述反射层为所述激发光反射区，所述透射层未被所述反射层覆盖的部分为所述激发光透射区。
  3. 根据权利要求2所述的荧光轮，其特征在于，所述透射层延伸超出所述反射层的边缘，所述第二荧光粉层设置于所述透射层超出所述反射层的部分。
  4. 根据权利要求1所述的荧光轮，其特征在于，所述基体包括反射层和透射层；
    所述透射层为环形，所述透射层套接于所述反射层的外周缘，所述反射层为所述激发光反射区，所述透射层为所述激发光透射区。
  5. 根据权利要求2-4任一项所述的荧光轮，其特征在于，所述透射层上设有膜层；
    所述膜层用于透射激发光，反射所述第二荧光粉层激发出的荧光。
  6. 根据权利要求5所述的荧光轮，其特征在于，所述第二荧光粉层在所述荧光轮轴向上的投影区域被包含在所述膜层内。
  7. 根据权利要求5所述的荧光轮，其特征在于，所述膜层为设于所述透射层上的镀膜。
  8. 根据权利要求1所述的荧光轮，其特征在于，所述第一荧光粉层的分布路径与所述第二荧光粉层的分布路径均为环形，所述第一荧光粉层与所述第二荧光粉层同轴设置，所述第一荧光粉层的外径与所述第二荧光粉层的内径相等。
  9. 一种光源模组，其特征在于，包括第一光源、合光系统和荧光轮；
    所述荧光轮包括基体、第一荧光粉层和第二荧光粉层，所述基体包括激发光反射区和激发光透射区；所述第一荧光粉层设置于所述激发光反射区的迎光面且沿所述基体的圆周方向分布；所述第二荧光粉层设置于所述激发光透射区的背光面且沿所述基体的圆周方向分布；所述第一荧光粉层与所述第二荧光粉层在所述基体的径向上至少部分错开；
    所述第一光源发出的激发光一部分照射于第一荧光粉层并激发出第一荧光，所述第一光源发出的激发光的一部分透过所述激发光透射区照射于所述第二荧光粉层并激发出第二荧光；
    所述合光系统用于将所述第一荧光与所述第二荧光进行合束。
  10. 一种投影机，其特征在于，包括根据权利要求9所述的光源模组。
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