WO2018196195A1 - 光源系统及显示设备 - Google Patents

光源系统及显示设备 Download PDF

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Publication number
WO2018196195A1
WO2018196195A1 PCT/CN2017/094796 CN2017094796W WO2018196195A1 WO 2018196195 A1 WO2018196195 A1 WO 2018196195A1 CN 2017094796 W CN2017094796 W CN 2017094796W WO 2018196195 A1 WO2018196195 A1 WO 2018196195A1
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WO
WIPO (PCT)
Prior art keywords
light
excitation light
excitation
light source
source system
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Application number
PCT/CN2017/094796
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English (en)
French (fr)
Inventor
郭祖强
杜鹏
李屹
Original Assignee
深圳市光峰光电技术有限公司
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Publication of WO2018196195A1 publication Critical patent/WO2018196195A1/zh

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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
    • 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
    • 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
    • G03B21/206Control of light source other than position or intensity

Definitions

  • the invention relates to a light source system and a display device.
  • laser light sources are becoming more and more widely used in display (such as projection field) and illumination. Due to the high energy density and small optical expansion, laser light sources have gradually replaced bulbs and LEDs in the field of high-brightness light sources. light source.
  • the light source system that uses the first light source to excite the phosphor to generate the desired light (such as the blue laser to excite the yellow phosphor to generate white light or a specific color of light) has the advantages of high luminous efficiency, good stability, low cost, and the like. Become the mainstream of the application.
  • the number of spatial modulators is mainly divided into a monolithic system and a three-chip system.
  • the light source needs to sequentially provide three colors of RGB light for illumination, and finally on the screen. A colorful picture appears on the top.
  • the three-chip system the light source needs to provide a white light source, and splits the light in the optical machine, respectively illuminating three spatial modulators, and finally the combined light presents a color picture on the screen.
  • the blue light source is excited by the blue laser as the excitation light source, which has become the mainstream of the application because of its high luminous efficiency, good stability and low cost.
  • the form of blue light + yellow light is generally adopted, that is, the light source has two independent optical paths, and finally the light is combined, which makes the system complicated and high in cost; and can also adopt the form of regional coating in the area coating
  • the white light is transmitted or reflected blue, and the yellow phosphor is generated after the yellow phosphor is excited. After the collected white light passes through the region coating, part of the blue light is lost, and the resulting white light beam lacks blue light at the center in the angular direction. The quality of the beam is affected. Therefore, there is a need for a compact, uniform white light source that is capable of efficiently generating white light while the white light beam has a higher quality.
  • FIG. 1 is a schematic diagram of the optical path structure of a light source system in the form of a blue light and a yellow light.
  • the two sets of lasers emit blue laser light, wherein one blue laser passes through the relay system 1 and acts as a blue-and-yellow splitting lens, and is imaged onto the surface of the yellow phosphor through the collecting lens, and the blue laser excites the yellow fluorescent light.
  • the powder produces yellow fluorescence, which is reflected by the collecting lens and reflected at the spectroscopic lens.
  • the spectroscopic lens is combined to form a white light.
  • the light source can obtain better white light, but the system is too complicated, large in volume, high in cost, and it is difficult to achieve miniaturization, and the large volume also reduces the light utilization rate to some extent.
  • FIG. 2 is a schematic diagram of the optical path structure of the light source system using the regional diaphragm
  • FIG. 3 is a schematic plan view of the regional diaphragm shown in FIG. 2 .
  • the laser emits a blue laser light, and reaches the regional diaphragm through the relay system.
  • the central film of the regional diaphragm is coated with anti-Blu-ray yellow light and the edge is fully transparent.
  • the blue light is reflected in the central portion, and is imaged on the surface of the yellow phosphor through the collecting lens to excite the mixed light of blue light and yellow fluorescent light, which is collected by the collecting lens and then emitted.
  • a light source system comprising a light source device, a first beam splitting device, a wavelength conversion device, and a light processing device, wherein the light source device is configured to emit a first excitation light and a second excitation light, wherein the first excitation The light has a first polarization state, the second excitation light has a second polarization state different from the first polarization state, and a ratio of a luminous flux of the first excitation light to the second excitation light is a preset value;
  • the first light combining and illuminating device includes at least one transparent substrate, and the at least one transparent substrate is configured to guide a first predetermined proportion of the excitation light of the second excitation light to the optical processing device and the wavelength One of the conversion devices, and another portion of the second excitation light and the first excitation light are directed to the other of the optical processing device and the wavelength conversion device, the first pre- The ratio is adapted to the number of the transparent substrates; the light processing device is configured to scatter the received excitation light and emit a third ex
  • a display device comprising a light source system, the light source system comprising a light source device, a first beam splitting device, a wavelength conversion device, and a light processing device, wherein the light source device is configured to emit the first excitation light and the second excitation light Wherein the first excitation light has a first polarization state, the second excitation light has a second polarization state different from the first polarization state, and the first excitation light and the second excitation light
  • the ratio of the luminous flux is a preset value;
  • the first spectroscopic light combining device includes at least one transparent substrate, and the at least one transparent substrate is configured to guide the first predetermined proportion of the excitation light to the second excitation light to the Deriving one of the light processing device and the wavelength conversion device, and directing another portion of the second excitation light and the first excitation light into the optical processing device and the wavelength conversion device
  • the first preset ratio is adapted to the number of the transparent substrates; the light processing device is configured to scatter the received excitation light and emit
  • the first beam splitting device includes at least one transparent substrate, and the first excitation light and the second excitation are performed by the at least one transparent substrate.
  • the light is split, such that the light processing device and the wavelength conversion device respectively generate the scattered excitation light and the received laser light for the excitation light, and the scattered excitation light and the received laser light are finally in the Depicting light combining in the optical channel
  • the at least one transparent substrate can split the first excitation light and the second excitation light by using transmissive reflection characteristics of light of different polarization states, which is not only small in volume but high in light utilization efficiency, and
  • the light splitting is uniform so that the phenomenon of uneven light emission caused by the area splitting does not occur, so that the light source system has a small volume, a high light utilization rate, and uniform light emission, and the display device using the light source system has a better display effect.
  • FIG. 1 is a schematic diagram of an optical path structure of a light source system in the form of a blue light + yellow light.
  • FIG. 2 is a schematic view showing the optical path structure of a light source system using a region diaphragm.
  • Fig. 3 is a schematic plan view showing the area of the diaphragm shown in Fig. 2.
  • FIG. 4 is a schematic structural view of a light source system according to a first embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a first light combining and combining device of the light source system shown in FIG. 4.
  • FIG. 5 is a schematic structural view of a first light combining and combining device of the light source system shown in FIG. 4.
  • Fig. 6 is a view showing the configuration of a first spectroscopic light combining device of a light source system according to a second embodiment of the present invention.
  • Fig. 7 is a view showing the configuration of a first spectroscopic light combining device of a light source system according to a third embodiment of the present invention.
  • Fig. 8 is a view showing the configuration of a first spectroscopic light combining device of a light source system according to a fourth embodiment of the present invention.
  • Fig. 9 is a view showing the configuration of a first spectroscopic light combining device of a light source system according to a fifth embodiment of the present invention.
  • Fig. 10 is a schematic structural view of a light source system according to a sixth embodiment of the present invention.
  • Fig. 11 is a schematic structural view of a light source system according to a seventh embodiment of the present invention.
  • Fig. 12 is a schematic structural view of a light source system according to an eighth embodiment of the present invention.
  • Fig. 13 is a schematic structural view of a light source system according to a ninth embodiment of the present invention.
  • Fig. 14 is a schematic structural view of a light source system according to a tenth embodiment of the present invention.
  • Fig. 15 is a view showing the configuration of a light source system according to an eleventh embodiment of the present invention.
  • Fig. 16 is a view showing the configuration of a light source system according to a twelfth embodiment of the present invention.
  • Fig. 17 is a view showing the configuration of a light source system according to a thirteenth embodiment of the present invention.
  • Fig. 18 is a schematic structural view of a light source system according to a fourteenth embodiment of the present invention.
  • Fig. 19 is a plan view showing the structure of a first spectroscopic light combining device of the light source system shown in Fig. 18.
  • Fig. 20 is a plan view showing the structure of a first spectroscopic light combining device of a light source system according to a fifteenth embodiment of the present invention.
  • 21 is a block schematic diagram of a display device in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a light source system according to a first embodiment of the present invention.
  • the light source system 10 includes a light source device 100, a first beam splitting device 104, a wavelength conversion device 107, and a light processing device 106.
  • the light source device 100 is configured to emit first excitation light and second excitation light, wherein the first excitation light has a first polarization state, and the second excitation light has a second polarization different from the first polarization state Polarization state.
  • the ratio of the luminous flux of the first excitation light to the second excitation light is a preset value. It can be understood that the preset value can be set according to actual needs.
  • the first light combining and illuminating device includes at least one transparent substrate, and the at least one transparent substrate is configured to guide a first predetermined proportion of the excitation light of the second excitation light to the optical processing device and the wavelength One of the conversion devices, and another portion of the second excitation light and the first excitation light are directed to the other of the optical processing device and the wavelength conversion device, the first pre- The ratio is adapted to the number of the transparent substrates.
  • the at least one transparent substrate guides (eg, reflects) the first predetermined proportion of the excitation light of the second excitation light to the light processing device, and the second excitation light Another portion of the excitation light and the first excitation light direct (e.g., transmit) to the wavelength conversion device.
  • the light processing device 106 is configured to convert a portion of the excitation light of the second excitation light into a third excitation light, the third excitation light being directed to the light exit channel.
  • the third excitation light has the same polarization state as the second excitation light before being converted by the light processing device 106.
  • the wavelength conversion device 107 is configured to convert another portion of the second excitation light and the first excitation light into a laser light, and the laser light is guided to the light exit channel to be the third The light is combined and the combined light emitted from the light exit channel satisfies a predetermined brightness and color temperature.
  • the light source device 100 includes a first light source 101a, a second light source 101b, and a light combining device 102, wherein the first light source 101a is configured to emit the first excitation light, and the second light source 102b is for emitting the second excitation light, the light combining device 102 transmits one of the first excitation light and the second excitation light and reflects the first excitation light and the second excitation light The other one is such that the first excitation light and the second excitation light are combined and supplied to the first beam splitting device 104.
  • the first light source 102a and the second light source 102b may both be semiconductor diodes or semiconductor diode arrays, such as laser diodes (LDs) or light emitting diodes (LEDs).
  • the first excitation light and the second excitation light are the same color excitation light, and may be blue light, purple light or ultraviolet light, etc., but are not limited thereto.
  • the first light source 102a includes a blue semiconductor laser diode for emitting a blue laser light having a first polarization state as the first excitation light
  • the second light source 102b also includes a blue semiconductor laser. a diode for emitting a blue laser light having a second polarization state as the second excitation light.
  • the first polarization state may be a P state
  • the second polarization state may be an S state.
  • the number of semiconductor laser diodes of the first light source 102a and the second light source 102b may be plural and arranged in a matrix. Further, the first light source 101a and the second light source 101b may respectively emit two beams of excitation light having the same power and different linear polarization states.
  • the light combining device 102 is a light combining film, such as a polarizing light film, the light combining film reflects light having a first polarization state and transmits light having a second polarization state, and the light combining film may
  • the outgoing light rays of the first light source 102a and the outgoing light rays of the second light source 102b are both inclined (eg, inclined at an angle of 45 degrees).
  • the light combining device 102 includes a first surface and a second surface disposed opposite to the first surface, the first surface receiving the first excitation light emitted by the first light source 101a And reflecting the first excitation light, the second surface receiving the second excitation light emitted by the second light source 101b and transmitting the second excitation light, the first excitation light and the The second excitation light is coincident and combined.
  • the light source device 100 further includes a light homogenizing device 103, and the light homogenizing device 103 is located between the light combining device 102 and the first light combining and combining device 104 for issuing the light combining device 102.
  • the first excitation light and the second excitation light are homogenized, and the uniformized first excitation light and the second excitation light are guided to the first beam splitting and combining device 104.
  • the light homogenizing device 103 may include a diffusion sheet, a light-diffusing square rod or a fly-eye lens or the like.
  • the light homogenizing device 103 homogenizes the first excitation light and the second excitation light (such as a Gaussian beam) into a relatively uniform laser spot, and the first excitation light and the second excitation light are uniform The polarization state does not change during the light process.
  • FIG. 5 is a schematic structural diagram of the first beam splitting device 104 of the light source system 10 shown in FIG.
  • the first beam splitting device 104 further includes a beam splitting film 104b disposed on a side of the at least one lens substrate 104a away from the light source device 100.
  • the at least one transparent substrate 104a reflects a portion of the excitation light of the second excitation light to the light processing device 106, and the at least one transparent substrate 104a also has another portion of the second excitation light.
  • the excitation light and the first excitation light are transmitted to the spectroscopic film 104b, and the spectroscopic film 104b transmits another portion of the second excitation light and the first excitation light.
  • At least one transparent substrate 104a may reflect a portion of the excitation light of the first excitation light to the light processing device 106, and the at least one transparent substrate 104a also excites another portion of the first excitation light.
  • the light and the second excitation light are transmitted to the spectroscopic film 104b, and the spectroscopic film 104b transmits another portion of the first excitation light and the second excitation light.
  • the at least one transparent substrate 104a and the light splitting film 104b may be directly in contact with each other and disposed in a superposed manner.
  • the light splitting film 104b may be directly formed on the at least one transparent substrate 104a, or may be bonded through a colloid layer. Set, or have a certain distance setting.
  • the at least one transparent substrate 104a may be white glass, and the white glass refers to an optical glass that has not been coated. In the visible and near-infrared spectral regions, optical glass is an ideal optical material with stable performance over a wide range, easy processing, uniformity, transparency and economical.
  • the light splitting film 104b can transmit the excitation light and reflect the laser light, such as transmitting blue light and reflecting yellow light (including red light and green light).
  • the at least one transparent substrate 104a includes a first transparent substrate 104c and a second transparent substrate 104d, and the second transparent substrate 104d is located at the first transparent substrate 104c and the light splitting film 104b.
  • the first transparent substrate 104c includes a first surface and a second surface opposite to the first surface
  • the second transparent substrate 104d includes a third surface adjacent to the second surface and The fourth surface opposite to the three surfaces, the light splitting film 104b is disposed on the fourth surface.
  • the first optical combining device 104 further includes an anti-reflection film 104e disposed on a surface of the transparent substrate adjacent to the light source device. Specifically, the anti-reflection film 104e is disposed at a distance from the surface.
  • the surface of the transparent substrate (such as the second transparent substrate 104d) farthest from the light source device 100 is adjacent to the surface (such as the third surface) of the previous transparent substrate (such as the first transparent substrate 104c), that is, the third embodiment in this embodiment.
  • the surface is further provided with the anti-reflection film 104e, the first surface is for receiving the first excitation light and the second excitation light, and the first surface and the second surface are to be the second excitation a portion of the light is excited to reflect light, and the first transparent substrate 104c, the anti-reflection film 104e, the second transparent substrate 104d, and the light-splitting film 104b sequentially emit the other portion of the excitation light and the first Excitation light transmission.
  • the transparent substrates of the at least one transparent substrate 104a may be directly contacted and overlapped, or may be laminated by a colloid layer, or may be disposed at a certain interval.
  • the first transparent substrate 104c and the second transparent substrate 104d are both white glass, and the first transparent substrate 104c and the second transparent substrate 104d may have a certain interval therebetween, and the first transparent substrate 104c
  • the first surface and the second surface may not be provided with any coating or film, and the third surface and the fourth surface of the second transparent substrate 104d may be respectively formed with the light-splitting film 104b and the anti-reflection film 104.
  • e, or the spectroscopic film 104b and the anti-reflection film 104e are attached by a gel.
  • the first excitation light and the second excitation light having different polarization states may be incident on the at least one transparent substrate 104a at an angle of 45 degrees, such as at a 45 degree angle.
  • the first excitation light having the first polarization state is transmitted to the first transparent substrate 104c and the second transparent substrate 104d to the spectroscopic film 104b, and further transmitted from the spectroscopic film 104b, a portion of the second excitation light in the second polarization state is reflected by the first surface and the second surface, the second polarization state
  • Another portion of the excitation light in the two excitation light is sequentially transmitted by the first transparent substrate 104c, the second transparent substrate 104d, and the spectral film 104b.
  • the first excitation light and the second excitation light of different polarization states are incident on the first optical combining device 104 at an angle of 45 degrees
  • the P-polarized light can be transmitted almost completely.
  • the S-polarized light has a 4.5% reflection (ie, the first predetermined ratio is 4.5%), and the other portions are transmitted.
  • the excitation light is incident on both surfaces of the white glass
  • the light of the P polarization state can be transmitted almost completely, and the light of the S polarization state is reflected by 9% (that is, the first preset ratio is 9%), and other parts are reflected.
  • the excitation light when the excitation light is incident on the four surfaces of the white glass (which can be stacked by two sheets of white glass or three sheets of white glass), the P-polarized light can be transmitted almost completely, and the S-polarized light is 18% ( That is, the first preset ratio is 18%) reflection, and the other parts are transmitted. It can be understood that when the S-polarized light passes through one surface of the white glass, 4.5% of the S-polarized light is reflected. When there are a plurality of pieces of white glass, and no polarized light is required to be reflected on each surface, the surface of part of the white glass may be plated with an anti-reflection film, a spectroscopic film, or the like.
  • the number of white glasses can be set according to the ratio of the S-polarized light that the spectroscopic unit 104 needs to reflect.
  • the ratio of the S-polarized light that the spectroscopic unit 104 needs to reflect For example, when light of 9% S-polarization state is required to be reflected to the light processing device 106, two pieces of white glass may be disposed in the optical splitting device 104, and the second white glass may be adjacent to the first white glass.
  • One side of the film is anti-reflective film, and the other side is provided with a spectroscopic film, so that the S-polarized light passes through the two surfaces of the first white glass to generate two reflections, that is, the light reflecting 9% of the S-polarized state enters the light processing device 106. Other portions of the S-polarized light are transmitted into the wavelength conversion device 107.
  • the optical splitting device 104 When light of 13.5% S-polarization state (ie, the first predetermined ratio is 13.5%) is reflected to the light processing device 106, two pieces of white glass may be disposed in the optical splitting device 104, which may be the second The white glass is disposed away from the first white glass side, so that the S-polarized light passes through the two surfaces of the first white glass and one surface of the second white glass to generate three reflections, that is, 13.5% of the reflection. Light in the S-polarized state enters the light processing device 106, and other portions of the S-polarized light are transmitted into the wavelength conversion device 107.
  • the light source system 10 uses a transparent substrate (such as white glass) as a light splitting device, and uses a transparent substrate to split the transmission and reflection characteristics of light of different polarization states, thereby achieving cost saving and avoiding the difference in optical coating difference to the light splitting ratio.
  • the effect ensures the consistency of the split ratio.
  • the first excitation light and the second excitation light are controlled to be incident on the first beam splitting device 104 at an incident angle of 45 degrees, so that the received laser light emitted from the wavelength conversion device and the third excitation light emitted from the light processing device 106 can be made.
  • the optical axes coincide, which further improves the efficiency of the optical machine and the uniformity of the light.
  • the light processing device 106 scatters a part of the excitation light of the second excitation light and converts a part of the excitation light of the second excitation light into the third excitation light.
  • the third excitation light has a first polarization state, and the light processing device 106 directs (eg, reflects) the third excitation light to the first beam splitting device.
  • the light processing device 106 includes a scattering element 106a and a polarization conversion element 105, and the at least one transparent substrate 104a directs a portion of the excitation light of the second excitation light to the polarization conversion element 105, the polarization
  • the conversion element 105 performs a first polarization conversion on a part of the excitation light of the second excitation light, and then guides a part of the excitation light of the second excitation light that has undergone the first polarization conversion to the scattering element 106a.
  • the scattering element 106a scatters a portion of the excitation light of the second excitation light that has undergone the first polarization conversion and scatters the second excitation light after the first polarization conversion
  • a part of the excitation light is guided to the polarization conversion element 105, and a part of the excitation light of the second excitation light that has undergone the first polarization conversion occurs when the excitation light is incident on the scattering element 106a, that is, the polarization state does not change but the light beam The angle becomes larger.
  • the polarization conversion element 105 performs a second polarization conversion on a part of the excitation light of the second excitation light that has been scattered and has undergone the first polarization conversion to obtain the third excitation light. Further, the polarization conversion element 105 is a 1/4 slide.
  • the light processing device 106 further includes a collection lens 108a disposed between the scattering element 106a and the polarization conversion element 105.
  • the wavelength conversion device 107 is a reflective wavelength conversion device, such as a reflective color wheel, and the wavelength conversion device 107 is provided with a wavelength conversion material (such as a fluorescent material), and the wavelength conversion material of the wavelength conversion device 107 is subjected to the The other portion of the first excitation light and the second excitation light is excited to generate the laser light, and the wavelength conversion device 107 further directs (eg, reflects) the laser beam to the first beam splitting light.
  • the wavelength conversion material is a yellow fluorescent material
  • the received laser light is a yellow received laser light.
  • the light source system 100 may further include a collection system disposed on the first beam splitting device and the wavelength conversion device 107, and the collection system may be a collection lens 108b for emitting the wavelength conversion device 107.
  • the laser is collected and the collected laser light is guided to the first beam splitting device 104.
  • the third excitation light may be incident on the first surface of the at least one transparent substrate 104a along a 45 degree angle, and the third excitation light has a first polarization state, so that the at least one transparent substrate 104a may be
  • the third excitation light is transmitted to the light exit channel via the light splitting film 104b.
  • the spectroscopic film 104b further receives the laser light emitted by the wavelength conversion device 107. Since the light splitting film 104b transmits excitation light (blue light) and reflects laser light (yellow light), the light splitting film 104b will also The laser light emitted by the wavelength conversion device 107 is reflected to the light exit channel.
  • the third excitation light and the received laser light are combined at the light splitting film 104b and the light exiting channel, so that the light exiting channel can emit white light.
  • the second excitation light having the second polarization state is reflected by 9%. Therefore, the first excitation light and the second excitation light are split into the “excitation light of the second polarization state” by the first beam splitting and combining device 104 (ie, the second excitation light having the second polarization state) A portion of the excitation light) and the "mixed light” (ie, the other portion of the second excitation light having the second polarization state and the first excitation light) are two excitation lights.
  • a part of the excitation light of the second excitation light having the second polarization state is subjected to polarization-preserving scattering by the scattering element 106a (ie, the polarization state is not changed but the beam angle is increased) and is collected by the collecting lens 108a and then emitted.
  • the power ratio is 9%, wherein the power ratio is a part of the excitation light of the second excitation light having the second polarization state (ie, "excitation light of the second polarization state") and the first excitation a ratio of the sum of the light to the second excitation light, since a portion of the excitation light of the second excitation light having the second polarization state passes through the polarization conversion element 105 (e.g., 1/4) during the exit and the incident a slide), therefore, a portion of the excitation light of the second excitation light having the second polarization state is converted into a third excitation light having a first polarization state, and is completely transmissive when passing through the first beam splitting device 104 again. .
  • a power ratio of another portion of the excitation light of the second excitation light having the second polarization state to the first excitation light is 91%, wherein the power ratio is a ratio of another portion of the excitation light of the second excitation light having the second polarization state to the sum of the first excitation light (ie, "mixed light") and the first excitation light and the second excitation light,
  • Another portion of the excitation light of the second excitation light having the second polarization state and the wavelength conversion material used by the first excitation light to excite the wavelength conversion device 107 to generate a laser (such as a yellow laser), the laser received Reflected at a large angle and collected by the collecting lens 108b, and then completely reflected by the first beam combining device 104, the reflected laser light and the transmitted third excitation light are mixed into white light or a specific color.
  • Light such as yellowish or blue light).
  • the first beam splitting device 104 includes at least one transparent substrate 104a and a light splitting film 104b laminated with the at least one transparent substrate 104a, and the first through the at least one transparent substrate 104a An excitation light and the second excitation light are split, such that the light processing device 106 and the wavelength conversion device 107 respectively generate scattered excitation light and the laser light for the excitation light, and cause scattering
  • the excitation light and the laser light are finally combined in the light exit channel, and the at least one transparent substrate 104a and the light splitting film 104b can utilize the transflective characteristics of light of different polarization states to the first excitation light and
  • the second excitation light is split, and the volume is small, the light utilization rate is high, and the light splitting is uniform, so that the phenomenon of uneven light emission caused by the area splitting does not occur, so that the light source system 10 has a small volume and a high light utilization rate. And the light is even.
  • the light splitting film 104b transmits the third excitation light converted by the first excitation light and reflects the laser light, thereby improving not only optical efficiency but also
  • the light source system 10 is compact in structure and small in volume, making the light source system 10 a light source that is both inexpensive and efficient.
  • FIG. 6 is a schematic structural diagram of a first beam splitting and light combining device of a light source system according to a second embodiment of the present invention.
  • the light source system is basically the same as the light source system of the first embodiment, that is, the above description of the light source system can be basically applied to the light source system, and the difference between the two is mainly: the first photosynthetic system
  • the third surface of the second transparent substrate 104d of the optical device may not be provided with an anti-reflection film.
  • at least one transparent substrate 104a includes a first transparent substrate 104c and a second transparent substrate 104d, and the second transparent substrate 104d is located at the first transparent substrate 104c.
  • the first transparent substrate 104c includes a first surface and a second surface opposite to the first surface
  • the second transparent substrate 104d includes a third surface adjacent to the second surface And a fourth surface opposite to the third surface
  • the light splitting film 104b is disposed on the fourth surface
  • the first surface is configured to receive the first excitation light and the second excitation light
  • the first surface, the second surface, and the third surface reflect a portion of the excitation light of the second excitation light
  • the first transparent substrate 104c, the second transparent substrate 104d, and the spectroscopic film 104b sequentially transmits the other portion of the excitation light and the first excitation light.
  • the second excitation light having the second polarization state may be further reflected on the third surface, so that The ratio of the second excitation light having the second polarization state reflected by the at least one transparent substrate 104a of the first optical combining device 104 (ie, the first and second transparent substrates 104c and 104d) is increased, such as The power ratio can reach 13.5%, that is, the power ratio of a part of the excitation light and the sum of the first excitation light and the second excitation light reaches 13.5%, and the at least one transparent The power ratio of the other portion of the second excitation light transmitted by the substrate 104a and the sum of the first excitation light and the first excitation light and the second excitation light is reduced to 86.5%.
  • the ratio of the splitting light that is, changing the ratio of the transmitted light to the reflected light, thereby realizing white light of different color temperatures, is widely used. Lighting, display or projection area.
  • FIG. 7 is a schematic structural diagram of a first beam splitting and combining device of a light source system according to a third embodiment of the present invention.
  • the light source system is basically the same as the light source system of the first embodiment, that is, the above description of the light source system can be basically applied to the light source system, and the difference between the two is mainly: the first photosynthetic system
  • the number of transparent substrates of the optical device 104 is different.
  • the first optical splitting device 104 includes a first transparent substrate 104a, and the first transparent substrate 104a includes a first surface and a second surface opposite to the first surface, and the light splitting film 104b is disposed.
  • the first surface is configured to receive the first excitation light and the second excitation light and reflect a portion of the excitation light of the second excitation light on the second surface, the first transparent substrate 104a And the light splitting film 104b sequentially transmits the other partial excitation light and the first excitation light.
  • the at least one transparent substrate includes only a first transparent substrate 104a, and the second excitation light having the second polarization state is further reflected on the first surface.
  • the ratio of the second excitation light having the second polarization state reflected by the first transparent substrate 104a of the first beam splitting device 104 is reduced, such as the power ratio is reduced to 4.5%, that is, the first a power ratio of a portion of the excitation light to the sum of the first excitation light and the second excitation light is 4.5%
  • the second excitation substrate 104a transmits the second excitation light
  • the power ratio of the other portion of the excitation light to the sum of the first excitation light and the first excitation light and the second excitation light is reduced to 95.5%.
  • the ratio of the splitting light that is, changing the ratio of the transmitted light to the reflected light, thereby realizing white light of different color temperatures, is widely used. Lighting, display or projection area.
  • FIG. 8 is a schematic structural diagram of a first optical splitting device of a light source system according to a fourth embodiment of the present invention.
  • the light source system is basically the same as the light source system of the first embodiment, that is, the above description of the light source system can be basically applied to the light source system, and the difference between the two is mainly: the first photosynthetic system
  • the number of transparent substrates of the optical device 104 is different.
  • the at least one transparent substrate 104a includes a first transparent substrate 104c, a second transparent substrate 104d, and a third transparent substrate 104f, which are stacked, the first transparent substrate 104c
  • the second transparent substrate 104d and the third transparent substrate 104f and the light-splitting film 104b are sequentially disposed, and the first transparent substrate 104c includes a first surface and a second surface opposite to the first surface, the second transparent The substrate 104d includes a third surface adjacent to the second surface and a fourth surface opposite the third surface, the third transparent substrate 104f including a fifth surface adjacent to the fourth surface and a fifth surface opposite to the surface, the light-splitting film 104b is disposed on the sixth surface, the fifth surface is further provided with an anti-reflection film 104e, the first surface is configured to receive the first excitation light and The second excitation light, the first surface, the second surface, the third surface, and the fourth surface reflect a portion of the excitation light of the
  • the at least one transparent substrate 104a includes a first transparent substrate 104c, a second transparent substrate 104d, and a third transparent substrate 104f which are stacked, and the second polarization state
  • the second excitation light is further reflected on the fourth surface, such that the at least one transparent substrate 104a of the first beam splitting device 104 (ie, the first, second, and third transparent substrates 104c, 104d and 104f) the proportion of the second excitation light having the second polarization state reflected will be increased, such as its power ratio can reach 18%, that is, a part of the excitation light and the first excitation light in the second excitation light And a sum of power of the sum of the second excitation light reaches 18%, and another part of the second excitation light transmitted by the at least one transparent substrate 104a and the first excitation light and the first The power ratio of the sum of one excitation light and the second excitation light is reduced to 82%.
  • the proportion of the split light can be changed by setting or not providing the anti-reflection film on the at least one transparent substrate 104a and the number of sheets of white glass, that is, changing the ratio of the transmitted light to the reflected light, thereby achieving different brightness or White light of color temperature is widely used in many fields of illumination, display or projection.
  • FIG. 9 is a schematic structural diagram of a first beam splitting and combining device of a light source system according to a fifth embodiment of the present invention.
  • the light source system has substantially the same structure as the light source system of the fourth embodiment, that is, the above description of the light source system can be basically applied to the light source system, and the difference between the two is mainly: the first photosynthetic system
  • the third surface of the third transparent substrate 104f of the optical device 104 may not be provided with an anti-reflection film.
  • the at least one transparent substrate 104a includes a first transparent substrate 104c, a second transparent substrate 104d, and a third transparent substrate 104f, which are stacked, the first transparent substrate 104c
  • the second transparent substrate 104d, the third transparent substrate 104f, and the light splitting film 104e are sequentially disposed, and the first transparent substrate 104c includes a first surface and a second surface opposite to the first surface, the second transparent
  • the substrate 104d includes a third surface adjacent to the second surface and a fourth surface opposite the third surface, the third transparent substrate 104f including a fifth surface adjacent to the fourth surface and a sixth surface opposite to the surface, the first surface for receiving the first excitation light and the second excitation light, the first surface, the second surface, the third surface,
  • the fourth surface and the fifth surface reflect a portion of the excitation light of the second excitation light, the first transparent substrate 104c, the second transparent substrate 104d, the third transparent substrate 104f, and the The light splitting film 104
  • the second excitation light having the second polarization state may further reflect on the fifth surface, so that The ratio of the second excitation light having the second polarization state reflected by the at least one transparent substrate 104a of the first optical combining device 104 (ie, the first, second, and third transparent substrates 104c, 104d, and 104f) Increasing, as its power ratio can reach 22.5%, that is, the power of a portion of the second excitation light and the sum of the first excitation light and the second excitation light is 22.5%, and The ratio of the power of the other portion of the second excitation light transmitted by the at least one transparent substrate 104a to the sum of the first excitation light and the sum of the first excitation light and the second excitation light is reduced 77.5%.
  • the ratio of the splitting light that is, changing the ratio of the transmitted light to the reflected light, thereby realizing white light of different color temperatures, is widely used. Lighting, display or projection area.
  • FIG. 10 is a schematic structural diagram of a light source system according to a sixth embodiment of the present invention.
  • the light source system has substantially the same structure as the light source system of the fourth embodiment, that is, the above description of the light source system can be basically applied to the light source system, and the difference between the two is mainly: the light source system
  • the light source controller is further configured to control a ratio of the amount of light of the first excitation light and the second excitation light emitted by the first light source 101a and the second light source 101b to be equal to the preset value.
  • different color temperature and white balance adjustments of the light source system are achieved using a combination of first excitation light having a first polarization state and second excitation light having a second polarization state of different amounts of light.
  • the first light source 101a and the second light source 101b each include a number of light emitting elements (such as lasers).
  • the light source controller may control the first excitation light and the second by controlling the number of opening and closing of the light emitting elements of the first light source 101a and the second light source 101b.
  • the proportion of the amount of light of the excitation light is equal to the preset value.
  • the light source controller controls the first excitation light and the second excitation light by controlling illumination power of the first light source 101a and the second light source 101b.
  • the light amount ratio is equal to the preset value.
  • the first light source 101a and the second light source 101b may each include a plurality of lasers, and the light source controller controls different numbers of lasers to be turned on and off, so that different numbers of first excitation lights and The combination of the two excitation lights further cooperates with the first beam splitting device to realize a plurality of different proportions of the splitting light, that is, changing the ratio of the transmitted light to the reflected light, thereby realizing white light of different color temperatures.
  • the second light source 101b when the first light source 101a can be turned off, the second light source 101b emits a second excitation light having a second polarization state, and the at least one transparent substrate 104a of the first beam splitting and combining device 104 reflects The proportion of the second excitation light having the second polarization state is 18%.
  • the ratio of the amount of the second excitation light to the first excitation light is 3:1, the second polarization state is reflected by the at least one transparent substrate 104a of the first beam splitting device 104
  • the proportion of excitation light is 13.5%.
  • the at least one transparent substrate 104a of the first beam splitting device 104 reflects the second second polarization state
  • the proportion of excitation light was 4.5%. It can be seen that when the two sets of different polarization states of the laser light power are dynamically adjusted by the light source controller, the split ratio of the at least one transparent substrate 104a of the first beam splitting device 104 can be continuously adjusted, so that the white light color temperature changes dynamically.
  • the light source system 10 when the second light source 101b emits the light amount of the second excitation light having the second polarization state to zero, the light source system 10 emits yellow light, and the color temperature is low; when the first light source 101b emits When the amount of light of the first excitation light of the first polarization state is adjusted to zero, the system emits white light having a higher color temperature.
  • the number of lasers that turn on the first light source 101a and the second light source 101b is controlled, or the light quantity combination of the first excitation light and the second excitation light is dynamically adjusted, and
  • the first beam splitting device 104 By combining the first beam splitting device 104, a highly efficient, dynamic white balance adjustment light source system having a wider color temperature range can be realized.
  • FIG. 11 is a schematic structural diagram of a light source system 40 according to a seventh embodiment of the present invention.
  • the light source system 40 has substantially the same structure as the light source system 10 of the first embodiment, that is, the above description of the light source system 10 can be basically applied to the light source system 40, and the difference between the two is mainly as follows:
  • the light processing device 405 is a transmissive light processing device;
  • the wavelength conversion device 406 is a transmissive wavelength conversion device;
  • the light source device 400 further includes a guiding device; the light processing device 405 transmits a portion of the excitation light of the second excitation light.
  • the guiding device includes a first guiding element 408a, a second guiding element 408b, and a light combining element 409.
  • the first guiding element 408a and the second guiding element 408b may be reflective elements such as mirrors.
  • the first guiding element 408a receives the third excitation light and directs (eg, reflects) the third excitation light to the light combining element 409, and the second guiding element 408b directs the laser beam (eg, Reflecting) to the light combining element 409, the light combining element 409 combines the third excitation light and the laser light receiving light to the light exit channel.
  • the light combining element 409 transmits the third excitation light to the light exit channel, and the light combining element 409 reflects the laser light to the light exit channel.
  • the collecting lens 407 is disposed between the wavelength converting device 406 and the guiding device, and the wavelength converting device 405 sends the laser light to be collected by the collecting lens 407 to reach the guiding.
  • a second guiding element 408b of the device is disposed between the wavelength converting device 406 and the guiding device, and the wavelength converting device 405 sends the laser light to be collected by the collecting lens 407 to reach the guiding.
  • FIG. 12 is a schematic structural diagram of a light source system according to an eighth embodiment of the present invention.
  • the light source system 40' is substantially identical in structure to the light source system 40 of the seventh embodiment, that is, the above description of the light source system 40 can be basically applied to the light source system 40', and the difference between the two is mainly
  • the light source system 40 ′ further includes a supplemental light source 501 that emits supplemental light having a first polarization state, and the first beam splitting light 404 also passes the supplemental light via the light processing device 405 and guiding device are guided to the light exit channel.
  • the supplemental light source 501 includes a red laser
  • the supplemental light includes a red laser
  • the first beam splitting device 404 transmits the supplemental light to the light processing device 405, and the light processing device 405
  • the supplemental light is further transmitted to the first guiding element 408a such that the first guiding element 408a reflects the supplemental light to the combining element 409 such that the combining element 409 transmits the supplemental light to the light exiting channel.
  • the light source system 40' further adds the supplemental light source 501, and the light source system 40' may be supplemented with specific color or specific color gamut light by supplemental light, so that the light source system 40' Better light.
  • the first and second light sources 401, the light combining device 402, the light homogenizing device 403 in the light source device 400, and the first and second light sources 101 in the first embodiment may be the same, and the structure thereof will not be described herein.
  • FIG. 13 is a schematic structural diagram of a light source system according to a ninth embodiment of the present invention.
  • the light source system 60 has substantially the same structure as the light source system 10 of the first embodiment, that is, the above description of the light source system 60 can be basically applied to the light source system, and the difference between the two is mainly:
  • the light source system 60 further includes a second splitting light combining device 6042, and the wavelength converting device includes a first wavelength converting element 6071 and a second wavelength converting element 6072.
  • the first optical splitting device 6041 Directing the first optical splitting device 6041 to another portion of the second excitation light of the wavelength conversion device 606 and the first excitation light is defined as a first light
  • the first portion A part of the excitation light guided by the photosynthetic optical device 6041 to the second excitation light of the optical processing device 606 is defined as a second light
  • the first spectral combining device 6041 directs the first light to the first a second optical combining device 6042
  • the second optical combining device 6042 is configured to guide a first portion of the first light to the first wavelength conversion element 6071
  • the second optical combining device 6042 further
  • the received laser light includes a first received laser light and a second received laser light
  • the first wavelength converting element 6071 The first portion of the light is converted into the first received laser light
  • the second wavelength converting element 6072 converts the second portion of the first light into the second received laser light
  • the first received laser light The second received laser light is directed to the light exit channel
  • the first wavelength conversion element 6071 may be provided with a first fluorescent material (such as a red fluorescent material), the first received laser light may be red light, and the second wavelength conversion element 6072 may be provided with a first A second fluorescent material (such as a green fluorescent material), and the second received laser light may be green light.
  • a first fluorescent material such as a red fluorescent material
  • the first received laser light may be red light
  • the second wavelength conversion element 6072 may be provided with a first A second fluorescent material (such as a green fluorescent material)
  • the second received laser light may be green light.
  • the second splitting light combining device 6042 includes at least one other transparent substrate 604a' that guides the first portion of the first light to the first wavelength conversion Element 6071, the at least one other transparent substrate 604a' also directs a second portion of the first light to the second wavelength conversion element 6072, the second predetermined ratio and the second portion
  • the number of other transparent substrates of the photosynthetic optical device 6042 is adapted.
  • the other transparent substrate 604a' may also be white glass. In this embodiment, the number of the other transparent substrates 604a' may be two, and the two other transparent substrates 604a' are stacked.
  • the second optical combining device 6042 may further include an anti-reflection film, and the anti-reflection film may be disposed on a surface of the other transparent substrate 604a' adjacent to the light source device (if the anti-reflection film is disposed at a distance from the surface) The surface of the other transparent substrate farthest from the first optical combining device 6041 is adjacent to the surface of the other transparent substrate.
  • the second beam splitting device 6042 further includes a second beam splitting film 604b' disposed on a side of the at least one other transparent substrate 604a' away from the first beam splitting and combining device 6041.
  • the first wavelength converting element 6071 also directs the first laser beam to the second beam splitting device 6042
  • the second wavelength converting element 6072 also directs the second laser beam to the second a light splitting device 6042
  • the other light splitting film 604b' is further configured to transmit one of the first received laser light and the second received laser light to cause the one received laser light to be guided to Depicting a light channel
  • the another beam splitting film 604b' is further configured to reflect another one of the first laser beam and the second laser beam to cause the other laser to be guided to Describe the light channel.
  • At least one transparent substrate of the first beam splitting device 6041 reflects a first predetermined proportion of the excitation light (ie, the second light) of the second excitation light to the
  • the light processing device 606 is configured to direct another portion of the second excitation light and the first excitation light (ie, the first light) to the second spectral combining device 6042.
  • the second splitting light combining device 6042 reflects a portion of the excitation light of the other portion of the second excitation light (ie, the first portion of the first light) to the first wavelength conversion element 6071, The second splitting light combining device 6042 also transmits another portion of the second excitation light and the first excitation light (ie, the second portion of the first light) to the second Wavelength conversion element 6072.
  • the light processing device 606 receives a portion of the excitation light of the second excitation light and emits a third excitation light to the first beam splitting device 6041, the first beam splitting device 6041 to the third excitation Light is transmitted to the guiding device such that the guiding device directs the third excitation light to the light exit channel.
  • the first wavelength conversion element 6071 emits the first laser beam to the second beam splitting device 6042
  • the second wavelength conversion element 6072 emits the second laser beam to the second beam splitting device 6042
  • the second splitting light combining device 6042 further transmits the first received laser light to the guiding device and the second received laser light to the guiding device, so that the guiding device will A laser and the second laser are guided to the light exit channel.
  • the guiding device includes a guiding element 609 and a light combining element 6043
  • the second beam combining unit 6042 guides the first laser beam and the second laser beam to the guiding element 609 (such as a reflecting element),
  • the guiding element 609 guides the combined light of the first laser beam and the second laser beam to the light combining element 6043.
  • the light combining element 6043 directs (eg, transmits) the third excitation light to the light exiting channel, and the light combining element 6043 also directs (reflects) the first received laser light and the second received laser light to The light exit channel.
  • the wavelength conversion device includes first and second two wavelength conversion elements 6071 and 6072, so that two kinds of laser light can be generated by using a fluorescent material different from the first embodiment, so that the light source system 60 is There are more options for the fluorescent material of the wavelength conversion device.
  • FIG. 14 there is shown a schematic structural view of a light source system 60' according to a tenth embodiment of the present invention.
  • the light source system 60' is substantially identical in structure to the light source system 60 of the ninth embodiment, that is, the above description of the light source system 60 can be basically applied to the light source system 60', and the difference between the two is mainly
  • the second splitting light combining device 6042 is different.
  • the second optical combining unit 6042 includes a polarization splitting element 604g (such as a polarization splitting coating), and the second combining light combining unit 6042 splits the received excitation light into the first partial excitation light and the polarization state. The second part of the excitation light.
  • the second optical combining device may use the first polarization state of the received excitation light (ie, the first light) as the first partial light and guide the first partial light (eg, Reflecting) to the first wavelength converting element, and using light of a second polarization state of the received excitation light as the second partial light and directing (eg, transmitting) the second partial light to the second wavelength converting element .
  • the first wavelength converting element 6071 receives the first received laser light generated by the first partial light, and directs (eg, reflects) the first received laser light to the second spectral combining device.
  • the second wavelength converting element 6072 receives the second received laser light generated by the second partial light and directs (eg, reflects) the second received laser light to the second splitting light combining device.
  • the second beam splitting device 6042 also guides the first laser beam and the second laser beam to the light exit channel through the guiding device. Specifically, the second splitting light combining device 6042 transmits the first received laser light and reflects the second received laser light, so that the first received laser light and the second received laser light are guided to the guiding element 609.
  • the guiding element further guides (eg, reflects) the first laser beam and the second laser beam to the light combining element 6043 and is guided (eg, reflected) to the light exiting channel by the light combining element 6043, and further The excitation light transmitted by the one-photosynthetic optical device 6041 is combined.
  • the first received laser light is a red received laser light
  • the second received laser light is a green received laser light
  • the second split optical combining device 6042 further includes a red light transparent green light splitting film 604b. The design of this scheme can make the red light loss less and the light utilization rate higher.
  • the first and second light sources 601, the light combining device 602, and the light homogenizing device 603 in the light source device are combined with the first and second light sources 101 and the light source in the first embodiment.
  • the device 102 and the light-homogenizing device 103 may be the same, and the scattering element 606a, the polarization conversion element 605, and the collecting lens 608 of the light processing device 606 may be the same as the scattering element 106a, the polarization conversion element 105, and the collecting lens 108a in the first embodiment.
  • the structure will not be described here.
  • FIG. 15 is a schematic structural diagram of a light source system 70 according to an eleventh embodiment of the present invention.
  • the light source system 70 has substantially the same structure as the light source system 60 of the ninth embodiment, that is, the above description of the light source system 60 can be basically applied to the light source system 70, and the difference between the two is mainly as follows:
  • the light processing device 705 and the wavelength conversion device are different.
  • the light processing device 705 transmits and scatters a part of the excitation light of the second excitation light to convert a part of the excitation light of the second excitation light into the third excitation light, and the first wavelength conversion element 7061
  • the second wavelength conversion element 7062 is a transmissive wavelength conversion device
  • the second beam splitting device 7042 guides (eg, reflects) the second portion of the excitation light to the second wavelength conversion element through a guiding element 7081b (such as a reflective element) 7062
  • the first wavelength converting element 7061 generates a first received laser light and directs the first received laser light to the guiding device
  • the second wavelength converting element 7062 generates a second received laser light and the first received light
  • a laser is directed to the guiding device.
  • the guiding device receives the third excitation light emitted by the optical processing device 705, the first laser received by the first wavelength conversion element 7061, and the second laser received by the second wavelength conversion element 7062. And guiding the third excitation light, the first received laser light, and the second received laser light to the light exit channel.
  • the guiding device includes a first guiding element 7081a, a first light combining element7082a and a second light combining element7082b, the first guiding element 7081a receiving the third excitation light and the third excitation light Leading to the first light combining element 7082a, the first light combining element7082a receiving the first laser light and the third excitation light and guiding the first laser light and the third excitation light to The second light combining element 7082b, the second wavelength converting element 7062 directs the second received laser light to the second light combining element 7082b, and the second light combining element 7082b uses the third light emitting element And the first received laser and the second received laser are combined and guided to the light exit channel.
  • FIG. 16 there is shown a schematic structural view of a light source system 70' according to a twelfth embodiment of the present invention.
  • the light source system 70' is substantially identical in structure to the light source system 70 of the eleventh embodiment, that is, the above description of the light source system 70 can be basically applied to the light source system 70', the difference between the two.
  • the light source system 70' further includes a first supplemental light source 801a and a second supplemental light source 801b, the first supplemental light source 801a emits first supplemental light, and the first supplemental light is guided to the first splitting light
  • the device 7041, the first beam splitting device 7041 further guides the first supplemental light to the light exit channel via the light processing device 705 and the guiding device, and the second supplemental light source 801b emits a second supplemental light
  • the second supplemental light is directed to the second beam splitting unit 7042, which also directs the second supplemental light to the light exit channel via the wavelength conversion device.
  • the second splitting light combining device 7042 transmits the second supplemental light to the first wavelength converting component 7061, and the first wavelength converting component 7061 transmits the second supplemental light to the guiding device. Having the guiding device direct the second supplemental light to the light exit channel.
  • the first supplemental light source 801a and the second supplemental light source 801b are both red complementary light sources, such as a red laser, and the first supplemental light and the second supplemental light are both red lasers.
  • the first supplemental light source 801a and the second supplemental light source 801b may also be green supplemental light sources; or the first supplemental light source 801a and the second supplemental light source 801b are supplemental light sources of different colors. Since the red laser is added as supplemental light, the light source system 70' can be supplemented with a specific color or a specific color gamut light, so that the light output of the light source system 70' is better.
  • Fig. 17 is a view showing the configuration of a light source system 70'' according to a thirteenth embodiment of the present invention.
  • the light source system 70'' is substantially identical in structure to the light source system 70' of the twelfth embodiment, that is, the above description of the light source system 70' can be basically applied to the light source system 70'', The difference between the two is mainly: the number of complementary light sources is different.
  • the light source system 70'' further includes a first supplemental light source 801a, a second supplemental light source 801b, and a third supplemental light source 901.
  • the first supplemental light source 801a emits first supplemental light, and the first supplemental light is guided to a split optical combining device 7041, the first optical combining device 7041 further guiding the first supplemental light via the optical processing device 705, the first guiding element 7081a, the first combining element 7082a and the second combining element 7082b To the light exit.
  • the second supplemental light source 801b emits second supplemental light, the second supplemental light is directed to a second beam splitting unit 7042, and the second beam splitting unit 7042 also passes the second supplemental light via the
  • the first wavelength conversion element 7061, the first light combining element 7082a, and the second light combining element 7082b are guided to the light exit channel.
  • the third supplemental light source 901 emits a third supplemental light
  • the light source system 70" further includes a second guiding element 7081b, the third supplemental light being directed to the second guiding element 7081b, the second guiding The element 7081b also directs the third supplemental light to the light exit channel via the second wavelength conversion element 7062 and the second light combining element 7082b.
  • the first supplementary light source 801a and the second supplementary light source 801b are both red complementary light sources, and the first supplementary light and the second supplementary light are both red lasers, and the third supplementary light source 901 is a green supplemental light source, and the third supplemental light is a green laser. Since the red laser and the green laser are added as supplemental light, the light source system 70'' may be supplemented with a specific color or a specific color gamut light, so that The light source system 70'' has better light output.
  • the first and second light sources 701, the light combining device 702, the light homogenizing device 703, and the first and second light sources 101 in the first embodiment are used in the light source device.
  • the light combining device 102 and the light homogenizing device 103 may be the same, and the light processing device 705 and the collecting lens 707 may be the same as the scattering element 405 in the seventh embodiment and the collecting lens 108b in the first embodiment, and no longer here. Describe its structure.
  • FIG. 18 is a schematic structural view of a light source system 10' according to a fourteenth embodiment of the present invention
  • FIG. 19 is a plan view showing the planar structure of the first light combining and combining device 1104 of the light source system 10' shown in FIG. .
  • the light source system 10' is substantially identical in structure to the light source system 10 of the first embodiment, that is, the above description of the light source system 10 can be basically applied to the light source system 10', and the difference between the two is mainly
  • the surface 41 of the at least one transparent substrate 1104a for receiving the first excitation light and the second excitation light (ie, the first surface of the first transparent substrate) includes a first region 41a and is located at the first surface A second region 41b around the periphery of a region 41a, the second region 41b is provided with an anti-reflection film 1104h.
  • the at least one transparent substrate 1104a is coated with a region, that is, the first region 41a located at the center is not coated, and the second region 41b at the edge is provided with an anti-reflection film.
  • the boundary range of the light beam of the excitation light is small at the first region 41a, and the first region 41a at the center is at least one of 45 degrees.
  • the transparent substrate 1104a splits the transmittance characteristics of the polarized light.
  • the amount of optical spread of the third excitation light passing through the optical processing device 1106 is large, and the beam boundary range at the first region 41a is large, so that the first region 41a at the center has a small reflection loss, and
  • the second region 41b of the edge is completely transmitted through the anti-reflection film 1104h, so that the at least one transparent substrate 1104a further improves optical utilization with respect to the completely uncoated transparent substrate.
  • Fig. 20 is a plan view showing the structure of a first beam splitting unit 1104' of a light source system according to a fifteenth embodiment of the present invention.
  • the light source system has substantially the same structure as the light source system of the fourteenth embodiment, that is, the above description of the light source system can be basically applied to the light source system, and the difference between the two is mainly:
  • At least one transparent substrate of the optical splitting optical device 1104' receives the first region 41a' (of the anti-reflection film) of the first excitation light and the surface 41 of the second excitation light (with an anti-reflection film)
  • the number of regions of the second region 41b' is different.
  • the first excitation light and the second excitation light are formed in the first surface of the first light splitting and combining device 1104' by the first excitation light and the second excitation light.
  • the number of the first regions 41a' is a plurality of spots, and the first regions 41a' are in one-to-one correspondence with the spots.
  • the first excitation light and the second excitation light form independent excitation spots at the first region 41a, as shown in FIG. 20, at this time,
  • the shape and size of the excitation spot are set, and the anti-antireflection film region (ie, the first region 41a') is disposed such that the first region 41a' splits the transmittance characteristic of the polarized light by using the 45° transparent substrate (ie, the excitation light is The 45 degree angle of incidence is incident on the first region 41a' of the first beam splitting device 1104', and the amount of optical expansion of the scattered light (ie, the third excitation light) passing through the light processing device is large, at the first region 41a
  • the beam boundary range is large, so that there is less reflection loss in the first region 41a without the anti-reflection film and completely transmitted in the second region 41b having the anti-reflection film, the first beam splitting device 1104' Increased optical utilization.
  • the first and second light sources 1101, the light combining device 1102, and the light homogenizing device 1103 in the light source device are combined with the first and second light sources 101 in the first embodiment.
  • the optical device 102 and the light homogenizing device 103 may be the same, and the scattering element 1106, the polarization conversion element 1105, and the collecting lens 1108 of the optical processing device may be the same as the scattering element 106a, the polarization conversion element 105, and the collecting lens 108a in the first embodiment. The structure will not be described again.
  • FIG. 21 is a block diagram of a display device according to a preferred embodiment of the present invention.
  • the display device 90 may be a projection device, such as an LCD, DLP, or LCOS projection device.
  • the display device 90 may include a light source system 91, a light machine system 92, and a projection lens 93.
  • the light source system 91 adopts any one of the above embodiments.
  • the optomechanical system 92 can image-modulate the light source light emitted by the light source system according to image data to generate projection light required for displaying an image, and the projection lens 93 is configured to display a projection image according to the projection light. .
  • the display device 90 employing the above-described light source system and the light source system of the modified embodiment thereof is small in volume.
  • the light source system of the present invention and the light source system of the modified embodiment thereof can also be used for a stage light system, an in-vehicle illumination system, a surgical illumination system, and the like, and are not limited to the above-described projection apparatus.

Abstract

一种光源系统(10),包括:光源装置(100)、第一分光合光装置(104)、波长转换装置(107)以及光处理装置(106)。光源装置(100)发出第一激发光和第二激发光,第一激发光具有第一偏振态,第二激发光具有不同于第一偏振态的第二偏振态。第一分光合光装置(104)包括至少一透明基板(104a),至少一透明基板(104a)将第二激发光中的第一预设比例的激发光引导至光处理装置(106)与波长转换装置(107)其中的一个,以及将第二激发光中的另一部分激发光以及第一激发光引导至光处理装置(106)与波长转换装置(107)中的另一个,第一预设比例与透明基板的数量相适应。光处理装置(106)将接收到的激发光进行散射并发出第三激发光。波长转换装置(107)将接收到的激发光转换为受激光。第三激发光和受激光被引导至出光通道。

Description

光源系统及显示设备 技术领域
本发明涉及一种光源系统及显示设备。
背景技术
目前,在显示(如投影领域)以及照明领域都开始越来越广泛的应用激光光源,由于具有能量密度高,光学扩展量小的优势,在高亮度光源领域,激光光源已经逐渐取代灯泡和LED光源。而在这其中,采用第一光源激发荧光粉产生所需光线(如蓝光激光激发黄色荧光粉产生白光或特定颜色的光)的光源系统,以其光效高、稳定性好、成本低等优点成为应用的主流。
特别是在投影技术中,以空间调制器的数量主要分为单片式系统和三片式系统,在单片式系统中,光源需要时序地提供RGB三种颜色的光进行照明,最终在屏幕上呈现出彩色的画面。而在三片式系统中,光源需要提供白光光源,并在光机中进行分光,分别照射三片空间调制器,最终合光在屏幕上呈现出彩色的画面。在使用激光作为光源的三片式投影技术中,采用蓝光激光作为激发光源激发黄色荧光粉产生的白光光源,以其光效高、稳定性好、成本低等优点成为应用的主流。
技术问题
在白光光源构成中,一般采用蓝光+黄光两路的形式,即光源具有两个独立的光路,最终合光,该方式使得系统复杂,成本高;另外可以采用区域镀膜的形式,在区域镀膜处透射或者反射蓝光,激发黄色荧光粉后产生蓝光+黄光得到的白光,经收集的白光经过区域镀膜,部分蓝光会损失,最终形成的白光光束角方向上中心缺少蓝光,在应用中会对光束的质量造成影响。因此,需要一种紧凑的、均匀的白光光源,其既能够高效地生成白光,同时白光光束又具有较高的质量。
请参阅图1,图1是采用蓝光+黄光两路形式的光源系统的光路结构示意图。所述光源系统工作时,两组激光器发出蓝光激光,其中一路蓝光激光经过中继系统1和作用为透蓝反黄的分光镜片后、经收集透镜成像到黄色荧光粉表面,蓝光激光激发黄色荧光粉产生黄色荧光,反射后经收集透镜收集在分光镜片处被反射,在传播过程中经过反射镜后;另外一路蓝光激光,经中继系统2出射,经过中继系统2的蓝光与黄色荧光在分光镜片处合光,形成白光出射。该光源能够得到较好的白光,但系统过于复杂,体积大,成本高,很难做到小型化,而且体积较大也一定程度降低了光利用率。
请参阅图2及图3,图2是采用区域膜片的光源系统的光路结构示意图,图3是图2所示的区域膜片的平面结构示意图。所述光源系统工作时,激光器发出蓝光激光,经过中继系统到达区域膜片处,区域膜片中心区域镀膜为反蓝光透黄光,边缘为全透。蓝光在中心部分被反射,通过收集透镜在黄色荧光粉表面成像,激发产生蓝光与黄色荧光的混合光,经收集透镜收集后出射,在通过区域膜片的时候,中心部分的蓝光会被反射而损失掉,最终其光束的远场形成如图3所示的分布,中心部分缺少蓝光,从而出光不均匀,这对于白光光束的某些应用领域是不利的。
技术解决方案
有鉴于此,有必要提供一种体积较小的光源系统,也有必要提供一种采用上述光源系统的显示设备。
一种光源系统,其包括光源装置、第一分光合光装置、波长转换装置、及光处理装置,所述光源装置用于发出第一激发光及第二激发光,其中,所述第一激发光具有第一偏振态,所述第二激发光具有不同于所述第一偏振态的第二偏振态,所述第一激发光与所述第二激发光的光通量之比为预设值;所述第一分光合光装置包括至少一透明基板,所述至少一透明基板用于将所述第二激发光中的第一预设比例的激发光引导至所述光处理装置与所述波长转换装置其中的一个,以及将所述第二激发光中的另一部分激发光以及所述第一激发光引导至所述光处理装置与所述波长转换装置中的另外一个,所述第一预设比例与所述透明基板的数量相适应;所述光处理装置用于将接收到的激发光进行散射并发出第三激发光;所述波长转换装置用于将接收到的激发光转换为受激光;所述第三激发光和所述受激光还被引导至出光通道,从出光通道出射的合光满足预定的亮度和色温。
一种显示设备,其包括光源系统,所述光源系统包括光源装置、第一分光合光装置、波长转换装置、及光处理装置,所述光源装置用于发出第一激发光及第二激发光,其中,所述第一激发光具有第一偏振态,所述第二激发光具有不同于所述第一偏振态的第二偏振态,所述第一激发光与所述第二激发光的光通量之比为预设值;所述第一分光合光装置包括至少一透明基板,所述至少一透明基板用于将所述第二激发光中的第一预设比例的激发光引导至所述光处理装置与所述波长转换装置其中的一个,以及将所述第二激发光中的另一部分激发光以及所述第一激发光引导至所述光处理装置与所述波长转换装置中的另外一个,所述第一预设比例与所述透明基板的数量相适应;所述光处理装置用于将接收到的激发光进行散射并发出第三激发光;所述波长转换装置用于将接收到的激发光转换为受激光;所述第三激发光和所述受激光还被引导至出光通道,从出光通道出射的合光满足预定的亮度和色温。
有益效果
与现有技术相比较,本发明光源系统与显示设备中,所述第一分光合光装置包括至少一透明基板,通过所述至少一透明基板对所述第一激发光与所述第二激发光进行分光,以使得所述光处理装置与所述波长转换装置分别针对所述激发光产生散射后的激发光与所述受激光,并使得散射后的激发光与所述受激光最终在所述出光通道中合光,所述至少一透明基板可以利用不同偏振态光的透射反射特性对所述第一激发光与第二激发光进行分光,不仅体积较小、光利用率较高,而且分光均匀从而不会出现区域分光造成出光不均的现象,使得所述光源系统的体积较小、光利用率较高及出光均匀,采用所述光源系统的显示设备的显示效果也较好。
附图说明
图1是采用蓝光+黄光两路形式的光源系统的光路结构示意图。
图2是采用区域膜片的光源系统的光路结构示意图。
图3是图2所示的区域膜片的平面结构示意图。
图4是本发明第一实施方式的光源系统的结构示意图。
图5是图4所示光源系统的第一分光合光装置的结构示意图。
图6是本发明第二实施方式的光源系统的第一分光合光装置的结构示意图。
图7是本发明第三实施方式的光源系统的第一分光合光装置的结构示意图。
图8是本发明第四实施方式的光源系统的第一分光合光装置的结构示意图。
图9是本发明第五实施方式的光源系统的第一分光合光装置的结构示意图。
图10是本发明第六实施方式的光源系统的结构示意图。
图11是本发明第七实施方式的光源系统的结构示意图。
图12是本发明第八实施方式的光源系统的结构示意图。
图13是本发明第九实施方式的光源系统的结构示意图。
图14是本发明第十实施方式的光源系统的结构示意图。
图15是本发明第十一实施方式的光源系统的结构示意图。
图16是本发明第十二实施方式的光源系统的结构示意图。
图17是本发明第十三实施方式的光源系统的结构示意图。
图18是本发明第十四实施方式的光源系统的结构示意图。
图19是图18所示的光源系统的第一分光合光装置的平面结构示意图。
图20是本发明第十五实施方式的光源系统的第一分光合光装置的平面结构示意图。
图21是本发明一较佳实施方式的显示设备的方框示意图。
主要元件符号说明
光源系统     10、40、40’、60、60’、70、70’、70’’、10’、91
光源装置     100
第一分光合光装置 104、404、6041、7041、1104、1104’
第二分光合光装置 6042、7042
波长转换装置   107、406、1107
光处理装置    106、405、606、705
光源       101、401、601、701、1101
第一光源     101a
第二光源     101b
合光装置     102、402、602、702、1102
匀光器件     103、403、603、703、1103
散射元件     106a、606a、1106
偏振转换元件   105、405、602、1105
收集透镜     108a、108b、407、608、1108
至少一透明基板  104a、604a’、1104a
分光膜      104b、604b’、42
第一透明基板   104a
第二透明基板   104d
第三透明基板   104f
增透膜      104e、1104h
引导元件     408a、408b、408、7081a、7081b、609、7081
合光元件     409、7082a、7082b、6043、7082
补充光源     501、801a、801b、901
第一波长转换元件 6071、7071
第二波长转换元件 6072、7072
偏振分光元件   604g
表面       41
第一区域     41a、41a’
第二区域     41b、41b’
显示设备     90
光机系统     92
投影镜头     93
如下具体实施方式将结合上述附图进一步说明本发明。
本发明的最佳实施方式
请参阅图4,图4是本发明第一实施方式的光源系统的结构示意图。所述光源系统10包括光源装置100、第一分光合光装置104、波长转换装置107、及光处理装置106。
所述光源装置100用于发出第一激发光及第二激发光,其中,所述第一激发光具有第一偏振态,所述第二激发光具有不同于所述第一偏振态的第二偏振态。所述第一激发光与所述第二激发光的光通量之比为预设值,可以理解,所述预设值可以依据实际需要设置。
所述第一分光合光装置包括至少一透明基板,所述至少一透明基板用于将所述第二激发光中的第一预设比例的激发光引导至所述光处理装置与所述波长转换装置其中的一个,以及将所述第二激发光中的另一部分激发光以及所述第一激发光引导至所述光处理装置与所述波长转换装置中的另外一个,所述第一预设比例与所述透明基板的数量相适应。本实施方式中,所述至少一透明基板将所述第二激发光中的第一预设比例的激发光引导(如反射)至所述光处理装置,以及将所述第二激发光中的另一部分激发光以及所述第一激发光引导(如透射)至所述波长转换装置。
所述光处理装置106用于将所述第二激发光中的一部分激发光转换为第三激发光,所述第三激发光被引导至出光通道。所述第三激发光与经过光处理装置106转换前的所述第二激发光具有相同的偏振态。所述波长转换装置107用于将所述第二激发光中的另一部分激发光与所述第一激发光转换为受激光,所述受激光被引导至所述出光通道以与所述第三激发光合光,从出光通道出射的合光满足预定的亮度和色温。
具体地,本实施方式中,所述光源装置100包括第一光源101a、第二光源101b及合光装置102,所述第一光源101a用于发出所述第一激发光,所述第二光源102b用于发出所述第二激发光,所述合光装置102透射所述第一激发光与所述第二激发光中的一种且反射所述第一激发光与所述第二激发光中的另外一种,使得所述第一激发光与所述第二激发光被合光并提供至所述第一分光合光装置104。
所述第一光源102a与所述第二光源102b可以均为半导体二极管或者半导体二极管阵列,如激光二极管(LD)或者发光二极管(LED)等。所述第一激发光与所述第二激发光为相同颜色激发光光,且可以为蓝色光、紫色光或者紫外光等,但并不以上述为限。本实施方式中,所述第一光源102a包括蓝色半导体激光二极管,用于发出具有第一偏振态的蓝色激光作为所述第一激发光,所述第二光源102b也包括蓝色半导体激光二极管,用于发出具有第二偏振态的蓝色激光作为所述第二激发光。其中所述第一偏振态可以为P态,所述第二偏振态可以为S态。所述第一光源102a与所述第二光源102b的半导体激光二极管的数量可以均为多个,且呈矩阵排列。进一步地,所述第一光源101a与所述第二光源101b可以分别发出两束功率相同、线偏振态不同的激发光光束。
所述合光装置102为合光膜片,如偏振合光片,所述合光膜片反射具有第一偏振态的光且透射具有第二偏振态的光,且所述合光膜片可以相对所述第一光源102a的出射光线及所述第二光源102b的出射光线均倾斜设置(如均呈45度角倾斜设置)。本实施方式中,所述合光装置102包括第一表面及与所述第一表面相背设置的第二表面,所述第一表面接收所述第一光源101a发出的所述第一激发光并将所述第一激发光反射,所述第二表面接收所述第二光源101b发出的所述第二激发光并将所述第二激发光透射,使所述第一激发光与所述第二激发光重合而合光。
所述光源装置100还包括匀光器件103,所述匀光器件103位于所述合光装置102与所述第一分光合光装置104之间,用于对所述合光装置102发出的所述第一激发光与所述第二激发光进行匀光并将匀光后的所述第一激发光与所述第二激发光引导至所述第一分光合光装置104。所述匀光器件103可以包括散射片、匀光方棒或者复眼透镜等。所述匀光器件103将所述第一激发光与所述第二激发光(如高斯光束)均匀化处理成较为均匀的激光光斑,所述第一激发光与所述第二激发光在匀光过程中偏振态不发生改变。
请参阅图5,图5是图4所示光源系统10的第一分光合光装置104的结构示意图。所述第一分光合光装置104还包括分光膜104b,所述分光膜104b设置于所述至少一透镜基板104a远离所述光源装置100的一侧。具体地,所述至少一透明基板104a将所述第二激发光中的一部分激发光反射至所述光处理装置106,所述至少一透明基板104a还将所述第二激发光中的另一部分激发光以及所述第一激发光透射至所述分光膜104b,所述分光膜104b将所述第二激发光中的另一部分激发光以及所述第一激发光透射。或者,也可以是,至少一透明基板104a将第一激发光中的一部分激发光反射至所述光处理装置106,所述至少一透明基板104a还将所述第一激发光中的另一部分激发光以及所述第二激发光透射至所述分光膜104b,所述分光膜104b将所述第一激发光中的另一部分激发光以及所述第二激发光透射。可以理解,所述至少一透明基板104a与所述分光膜104b可以直接接触并叠合设置,如所述分光膜104b直接形成于所述至少一透明基板104a上,也可以通过胶体层粘接叠合设置,或者是具有一定间隔距离设置。所述至少一透明基板104a可以为白玻璃,所述的白玻璃指没有经过镀膜的光学玻璃。在可见光和近红外光光谱区,光学玻璃几乎是理想的光学材料,在相当宽的范围内性能稳定、易于加工、均匀、透明且比较经济。所述分光膜104b可以透射激发光并反射受激光,如透射蓝光且反射黄光(包括红光与绿光)。
本实施方式中,所述至少一透明基板104a包括层叠设置的第一透明基板104c及第二透明基板104d,所述第二透明基板104d位于所述第一透明基板104c与所述分光膜104b之间,所述第一透明基板104c包括第一表面及与所述第一表面相背的第二表面,所述第二透明基板104d包括邻近所述第二表面的第三表面及与所述第三表面相背的第四表面,所述分光膜104b设置于所述第四表面。所述第一分光合光装置104还包括增透膜104e,所述增透膜104e设置于其中一透明基板邻近所述光源装置的表面,具体地,所述增透膜104e设置于距离所述光源装置100最远的透明基板(如第二透明基板104d)的邻近前一透明基板(如第一透明基板104c)的表面(如第三表面),即,本实施方式中,所述第三表面还设置有所述增透膜104e,所述第一表面用于接收所述第一激发光及所述第二激发光,所述第一表面及所述第二表面将所述第二激发光中的一部分激发光反射,所述第一透明基板104c、所述增透膜104e、所述第二透明基板104d及所述分光膜104b依序将所述另一部分激发光以及所述第一激发光透射。可以理解,所述至少一透明基板104a的各透明基板可以直接接触并叠合设置,也可以通过胶体层粘接叠合设置,或者是具有一定间隔距离设置。所述第一透明基板104c与所述第二透明基板104d均为白玻璃,所述第一透明基板104c与所述第二透明基板104d之间可以具有一定间隔,且所述第一透明基板104c的第一表面与第二表面可以不设置任何涂层或膜片,所述第二透明基板104d的第三表面与第四表面可以分别形成有所述分光膜104b与所述增透膜104 e,或者通过胶体贴附有所述分光膜104b与所述增透膜104 e。
详细来说,所述光源系统10工作时,所述具有不同偏振态的第一激发光与第二激发光可以均呈45度角入射至所述至少一透明基板104a时,如呈45度角入射至所述第一透明基板104c的第一表面,所述具有第一偏振态的第一激发光几乎被所述第一透明基板104c及所述第二透明基板104d全部透射至所述分光膜104b,并进一步自所述分光膜104b透射,所述第二偏振态的第二激发光中的一部分激发光被所述第一表面与所述第二表面反射,所述第二偏振态的第二激发光中的另一部分激发光则依序被所述第一透明基板104c、所述第二透明基板104d及所述分光膜104b透射。具体地,当不同偏振态的第一激发光与第二激发光以45度角入射第一分光合光装置104时,入射到白玻璃的单一表面时,可使P偏振态的光线几乎全部透射,S偏振态的光有4.5%反射(即第一预设比例为4.5%),其它部分透射。同理,当激发光入射到白玻璃的两个表面时,可使P偏振态的光线几乎全部透射,S偏振态的光有9%(即第一预设比例为9%)反射,其它部分透射;当激发光入射到白玻璃的四个表面(可以由两片白玻璃或三片白玻璃层叠设置)时,可使P偏振态的光线几乎全部透射,S偏振态的光有18%(即第一预设比例为18%)反射,其它部分透射。可以理解,S偏振态的光每经过白玻璃的一个表面时,有4.5%的S偏振态的光发生反射。当有多片白玻璃时,又不需要偏振光在每一个表面都发生反射时,可以将部分白玻璃的表面镀设增透膜、分光膜等。因此,可以根据分光合光装置104需要反射S偏振光的比例来设置白玻璃的数量。例如,当需要9%的S偏振态的光反射到所述光处理装置106时,分光合光装置104中可以设置两片白玻璃,此时可以是第二片白玻璃靠近第一片白玻璃的一面膜增透膜,另一面设置分光膜,这样S偏振态的光经过第一片白玻璃的两个表面时产生两次反射,即反射9%的S偏振态的光进入到光处理装置106,其它部分S偏振态的光透射进入到所述波长转换装置107。当需要13.5%的S偏振态的光(即第一预设比例为13.5%)反射到所述光处理装置106时,分光合光装置104中可以设置两片白玻璃,此时可以是第二片白玻璃远离第一片白玻璃的一面设置分光膜,这样S偏振态的光经过第一片白玻璃的两个表面与第二片白玻璃的一个表面时产生三次反射,即反射13.5%的S偏振态的光进入到所述光处理装置106,其它部分S偏振态的光透射进入到所述波长转换装置107。所述光源系统10利用透明基板(如白玻璃)作为分光器件,利用透明基板对不同偏振态的光线的透射反射特性进行分光,既做到节省成本,又避免了光学镀膜差异对分光比例带来的影响,保证了分光比例的一致性。同时,控制第一激发光和第二激发光以45度的入射角入射到第一分光合光装置104,可以使得从波长转换装置出射的受激光与从光处理装置106出射的第三激发光的光轴重合,进而使得光机的效率及光的均匀性得到进一步提高。
进一步地,本实施方式中,所述光处理装置106对所述第二激发光中的一部分激发光进行散射以及将所述第二激发光中的一部分激发光转换为所述第三激发光,所述第三激发光具有第一偏振态,所述光处理装置106将所述第三激发光引导(如反射)至所述第一分光合光装置。
具体地,所述光处理装置106包括散射元件106a与偏振转换元件105,所述至少一透明基板104a将所述第二激发光中的一部分激发光引导至所述偏振转换元件105,所述偏振转换元件105对所述第二激发光中的一部分激发光进行第一次偏振转换后将所述已进行第一次偏振转换的所述第二激发光中的一部分激发光引导至所述散射元件106a。所述散射元件106a对所述已进行第一次偏振转换的所述第二激发光中的一部分激发光进行散射并将散射后且已进行第一次偏振转换的所述第二激发光中的一部分激发光引导至所述偏振转换元件105,已进行第一次偏振转换的所述第二激发光中的一部分激发光入射到散射元件106a时发生保偏散射,即偏振状态不发生改变但光束角度变大。所述偏振转换元件105将所述散射后且已进行第一次偏振转换的所述第二激发光中的一部分激发光进行第二次偏振转换得到所述第三激发光。进一步地,所述偏振转换元件105为1/4玻片。所述光处理装置106还包括收集透镜108a,所述收集透镜108a设置于所述散射元件106a与所述偏振转换元件105之间。
所述波长转换装置107为反射式波长转换装置,如反射式色轮,所述波长转换装置107上设置有波长转换材料(如荧光材料),所述波长转换装置107的波长转换材料受所述第一激发光及所述第二激发光中的另一部分激发光激发而产生所述受激光,所述波长转换装置107还将所述受激光引导(如反射)至所述第一分光合光装置104。本实施方式中,所述波长转换材料为黄色荧光材料,所述受激光为黄色受激光。所述光源系统100还可以包括设置于所述第一分光合光装置与所述波长转换装置107的收集系统,所述收集系统可以为收集透镜108b,用于将所述波长转换装置107发出的所述受激光进行收集并将收集后的所述受激光引导至所述第一分光合光装置104。
进一步地,所述第三激发光可以沿45度角入射至所述至少一透明基板104a的第一表面,由于所述第三激发光具有第一偏振态,使得所述至少一透明基板104a可将所述第三激发光经由所述分光膜104b透射至所述出光通道。所述分光膜104b还接收所述波长转换装置107发出的所述受激光,由于所述分光膜104b透射激发光(蓝色光)并反射受激光(黄色光),因此所述分光膜104b还将所述波长转换装置107发出的所述受激光反射至所述出光通道。所述第三激发光与所述受激光在所述分光膜104b及所述出光通道处合光,使得所述出光通道可以出射白光。
进一步地,本实施方式中,所述具有第二偏振态的第二激发光中9%反射。因此,所述第一激发光与所述第二激发光经过所述第一分光合光装置104分光为“第二偏振态的激发光”(即所述具有第二偏振态的第二激发光的一部分激发光)和“混合光”(即所述具有第二偏振态的第二激发光的另一部分激发光与所述第一激发光)两束激发光。所述具有第二偏振态的第二激发光的一部分激发光被所述散射元件106a进行保偏散射(即偏振状态不发生改变但光束角度变大)并被所述收集透镜108a收集后出射,其功率占比为9%,其中,所述功率占比为所述具有第二偏振态的第二激发光的一部分激发光(即“第二偏振态的激发光”)与所述第一激发光与所述第二激发光的总和的占比,由于所述具有第二偏振态的第二激发光的一部分激发光从出射和入射的过程中经过两次偏振转换元件105(如1/4玻片),因此,所述具有第二偏振态的第二激发光的一部分激发光转换为具有第一偏振态的第三激发光,再次经过所述第一分光合光装置104时可完全透射。进一步地,所述具有第二偏振态的第二激发光的另一部分激发光与所述第一激发光(即“混合光”)的功率占比为91%,其中,所述功率占比为具有第二偏振态的第二激发光的另一部分激发光与所述第一激发光(即“混合光”)与所述第一激发光与所述第二激发光的总和的占比,所述具有第二偏振态的第二激发光的另一部分激发光与所述第一激发光用于激发所述波长转换装置107的波长转换材料产生受激光(如黄色受激光),所述受激光以大角度反射并经收集透镜108b收集后出射,经过所述第一分光合光装置104时被完全反射,反射的所述受激光和透射的所述第三激发光混合成白光或者特定颜色的光(如偏黄光或偏蓝光)。
本发明光源系统10中,所述第一分光合光装置104包括至少一透明基板104a及与所述至少一透明基板104a层叠设置的分光膜104b,通过所述至少一透明基板104a对所述第一激发光与所述第二激发光进行分光,以使得所述光处理装置106与所述波长转换装置107分别针对所述激发光产生散射后的激发光与所述受激光,并使得散射后的激发光与所述受激光最终在所述出光通道中合光,所述至少一透明基板104a及所述分光膜104b可以利用不同偏振态的光的透射反射特性对所述第一激发光与第二激发光进行分光,不仅体积较小、光利用率较高,而且分光均匀从而不会出现区域分光造成出光不均的现象,使得所述光源系统10的体积较小、光利用率较高及出光均匀。
进一步地,所述第一分光合光装置104中,所述分光膜104b将所述第一激发光转换的第三激发光透射以及将所述受激光反射,不仅提高了光学效率,还使得所述光源系统10的结构紧凑、体积较小,使得所述光源系统10是一种既廉价又高效的光源。
请参阅图6,图6是本发明第二实施方式的光源系统的第一分光合光装置的结构示意图。所述光源系统与第一实施方式的光源系统的结构基本相同,也就是说,上述对所述光源系统的描述基本上可以应用于所述光源系统,二者的差别主要在于:第一分光合光装置的第二透明基板104d的第三表面可以不设置增透膜。具体地,所述第一分光合光装置104中,至少一透明基板104a包括层叠设置的第一透明基板104c及第二透明基板104d,所述第二透明基板104d位于所述第一透明基板104c与分光膜104b之间,所述第一透明基板104c包括第一表面及与所述第一表面相背的第二表面,所述第二透明基板104d包括邻近所述第二表面的第三表面及与所述第三表面相背的第四表面,所述分光膜104b设置于所述第四表面,所述第一表面用于接收所述第一激发光及所述第二激发光,所述第一表面、所述第二表面及所述第三表面将所述第二激发光中的一部分激发光反射,所述第一透明基板104c、所述第二透明基板104d及所述分光膜104b依序将所述另一部分激发光以及所述第一激发光透射。
相较于第一实施方式,本实施方式中,由于所述第三表面未设置增透膜,所述具有第二偏振态的第二激发光可在所述第三表面进一步发生反射,使得所述第一分光合光装置104的至少一透明基板104a(即所述第一及第二透明基板104c及104d)反射的所述具有第二偏振态的第二激发光的比例将增大,如其功率占比可以达到13.5%,即所述第二激发光中的一部分激发光与所述第一激发光及所述第二激发光的总和的功率占比达到13.5%,而所述至少一透明基板104a透射的所述第二激发光中的另一部分激发光与所述第一激发光与所述第一激发光及所述第二激发光的总和的功率占比降至86.5%。由此可知,通过在所述至少一透明基板104a上设置或不设置增透膜等可以改变分光占比,即改变透射光与反射光的比例,从而实现不同色温的白光,被广泛应用于很多照明、显示或投影领域。
请参阅图7,图7是本发明第三实施方式的光源系统的第一分光合光装置的结构示意图。所述光源系统与第一实施方式的光源系统的结构基本相同,也就是说,上述对所述光源系统的描述基本上可以应用于所述光源系统,二者的差别主要在于:第一分光合光装置104的透明基板的数量不同。具体地,所述第一分光合光装置104包括第一透明基板104a,所述第一透明基板104a包括第一表面及与所述第一表面相背的第二表面,所述分光膜104b设置于所述第二表面,所述第一表面用于接收所述第一激发光及所述第二激发光并将所述第二激发光中的一部分激发光反射,所述第一透明基板104a及所述分光膜104b依序将所述另一部分激发光以及所述第一激发光透射。
相较于第一实施方式,本实施方式中,由于所述至少一透明基板仅包括一第一透明基板104a,所述具有第二偏振态的第二激发光在所述第一表面进一步发生反射,使得所述第一分光合光装置104的第一透明基板104a反射的所述具有第二偏振态的第二激发光的比例将减小,如其功率占比降低到4.5%,即所述第二激发光中的一部分激发光与所述第一激发光及所述第二激发光的总和的功率占比为4.5%,而所述第一透明基板104a透射的所述第二激发光中的另一部分激发光与所述第一激发光与所述第一激发光及所述第二激发光的总和的功率占比降至95.5%。由此可知,通过在所述第一透明基板104a上设置或不设置增透膜等可以改变分光占比,即改变透射光与反射光的比例,从而实现不同色温的白光,被广泛应用于很多照明、显示或投影领域。
请参阅图8,图8是本发明第四实施方式的光源系统的第一分光合光装置的结构示意图。所述光源系统与第一实施方式的光源系统的结构基本相同,也就是说,上述对所述光源系统的描述基本上可以应用于所述光源系统,二者的差别主要在于:第一分光合光装置104的透明基板的数量不同。具体地,所述第一分光合光装置104中,所述至少一透明基板104a包括层叠设置的第一透明基板104c、第二透明基板104d及第三透明基板104f,所述第一透明基板104c、第二透明基板104d及第三透明基板104f及分光膜104b依序设置,所述第一透明基板104c包括第一表面及与所述第一表面相背的第二表面,所述第二透明基板104d包括邻近所述第二表面的第三表面及与所述第三表面相背的第四表面,所述第三透明基板104f包括邻近所述第四表面的第五表面及与所述第五表面相背的第六表面,所述分光膜104b设置于所述第六表面,所述第五表面还设置有增透膜104e,所述第一表面用于接收所述第一激发光及所述第二激发光,所述第一表面、所述第二表面、所述第三表面及所述第四表面将所述第二激发光中的一部分激发光反射,所述第一透明基板104c、所述第二透明基板104d、所述增透膜104e、所述第三透明基板104f及所述分光膜104b依序将所述另一部分激发光以及所述第一激发光透射。
相较于第一实施方式,本实施方式中,由于所述至少一透明基板104a包括层叠设置的第一透明基板104c、第二透明基板104d及第三透明基板104f,所述具有第二偏振态的第二激发光可在所述第四表面进一步发生反射,使得所述第一分光合光装置104的至少一透明基板104a(即所述第一、第二及第三透明基板104c、104d及104f)反射的所述具有第二偏振态的第二激发光的比例将增大,如其功率占比可以达到18%,即所述第二激发光中的一部分激发光与所述第一激发光及所述第二激发光的总和的功率占比达到18%,而所述至少一透明基板104a透射的所述第二激发光中的另一部分激发光与所述第一激发光与所述第一激发光及所述第二激发光的总和的功率占比降至82%。由此可知,通过在所述至少一透明基板104a上设置或不设置增透膜以及设置白玻璃的片数等可以改变分光占比,即改变透射光与反射光的比例,从而实现不同亮度或色温的白光,被广泛应用于很多照明、显示或投影领域。
请参阅图9,图9是本发明第五实施方式的光源系统的第一分光合光装置的结构示意图。所述光源系统与第四实施方式的光源系统的结构基本相同,也就是说,上述对所述光源系统的描述基本上可以应用于所述光源系统,二者的差别主要在于:第一分光合光装置104的第三透明基板104f的第三表面可以不设置增透膜。具体地,所述第一分光合光装置104中,所述至少一透明基板104a包括层叠设置的第一透明基板104c、第二透明基板104d及第三透明基板104f,所述第一透明基板104c、第二透明基板104d、第三透明基板104f及分光膜104e依序设置,所述第一透明基板104c包括第一表面及与所述第一表面相背的第二表面,所述第二透明基板104d包括邻近所述第二表面的第三表面及与所述第三表面相背的第四表面,所述第三透明基板104f包括邻近所述第四表面的第五表面及与所述第五表面相背的第六表面,所述第一表面用于接收所述第一激发光及所述第二激发光,所述第一表面、所述第二表面、所述第三表面、所述第四表面及所述第五表面将所述第二激发光中的一部分激发光反射,所述第一透明基板104c、所述第二透明基板104d、所述第三透明基板104f及所述分光膜104b依序将所述另一部分激发光以及所述第一激发光依序透射。
相较于第四实施方式,本实施方式中,由于所述第五表面未设置增透膜,所述具有第二偏振态的第二激发光可在所述第五表面进一步发生反射,使得所述第一分光合光装置104的至少一透明基板104a(即所述第一、第二及第三透明基板104c、104d及104f)反射的所述具有第二偏振态的第二激发光的比例将增大,如其功率占比可以达到22.5%,即所述第二激发光中的一部分激发光与所述第一激发光及所述第二激发光的总和的功率占比达到22.5%,而所述至少一透明基板104a透射的所述第二激发光中的另一部分激发光与所述第一激发光与所述第一激发光及所述第二激发光的总和的功率占比降至77.5%。由此可知,通过在所述至少一透明基板104a上设置或不设置增透膜等可以改变分光占比,即改变透射光与反射光的比例,从而实现不同色温的白光,被广泛应用于很多照明、显示或投影领域。
请参阅图10,图10是本发明第六实施方式的光源系统的结构示意图。所述光源系统与第四实施方式的光源系统的结构基本相同,也就是说,上述对所述光源系统的描述基本上可以应用于所述光源系统,二者的差别主要在于:所述光源系统还包括光源控制器,所述光源控制器用于控制所述第一光源101a与所述第二光源101b发出的第一激发光与所述第二激发光的光量比例等于所述预设值。具体地,采用不同光量的具有第一偏振态的第一激发光和具有第二偏振态的第二激发光的组合实现光源系统的不同色温和白平衡调节。
所述第一光源101a与所述第二光源101b均包括若干数量的发光元件(如激光器)。在一种实施例中,所述光源控制器可以通过控制所述第一光源101a与所述第二光源101b的发光元件的开启与关闭的数量来控制所述第一激发光与所述第二激发光的光量比例等于所述预设值。在另一种实施例中,所述光源控制器通过控制所述第一光源101a与所述第二光源101b的发光元件的发光功率来控制所述第一激发光与所述第二激发光的光量比例等于所述预设值。
具体地,所述第一光源101a与所述第二光源101b可以均包括多个激光器,通过所述光源控制器控制不同数量的激光器的开启与关闭,可以实现不同数量的第一激发光和第二激发光的组合,进一步配合所述第一分光合光装置实现多种不同的分光占比,即改变透射光与反射光的比例,从而实现不同色温的白光。
举例来说:当所述第一光源101a可以关闭,所述第二光源101b发出具有第二偏振态的第二激发光,所述第一分光合光装置104的至少一透明基板104a反射的所述具有第二偏振态的第二激发光的占比为18%。当所述第二激发光与所述第一激发光的光量比例为3:1时,所述第一分光合光装置104的至少一透明基板104a反射的所述具有第二偏振态的第二激发光的占比为13.5%。当所述第二激发光与所述第一激发光的光量比例为1:3时,所述第一分光合光装置104的至少一透明基板104a反射的所述具有第二偏振态的第二激发光的占比为4.5%。可见,通过所述光源控制器动态调节两组不同偏振态激光光功率时,可以连续地调节所述第一分光合光装置104的至少一透明基板104a的分光占比,使得白光色温动态变化。例如,当所述第二光源101b发出具有第二偏振态的第二激发光的光量调至零时,所述光源系统10出光为黄光,色温较低;当所述第一光源101b发出具有第一偏振态的第一激发光的光量调至零时,系统出射色温较高的白光。
可见,本实施方式中,通过控制第一光源101a与第二光源101b的开启的激光器的数量,或动态调节所述第一激发光与所述第二激发光的光量组合方式,且与所述第一分光合光装置104相结合,即可实现一种具有更宽色温范围的、高效的、动态白平衡调节的光源系统。
请参阅图11,图11是本发明第七实施方式的光源系统40的结构示意图。所述光源系统40与第一实施方式的光源系统10的结构基本相同,也就是说,上述对所述光源系统10的描述基本上可以应用于所述光源系统40,二者的差别主要在于:光处理装置405为透射式光处理装置;波长转换装置406为透射式波长转换装置;光源装置400还包括引导装置;所述光处理装置405对所述第二激发光中的一部分激发光进行透射及散射以将所述第二激发光中的一部分激发光转换为所述第三激发光,所述波长转换装置406为透射式波长转换装置,所述引导装置接收所述光处理装置405发出的所述第三激发光及所述波长转换装置406发出的受激光并将所述第三激发光及所述受激光均引导至出光通道。
具体地,本实施方式中,所述引导装置包括第一引导元件408a、第二引导元件408b、及合光元件409。所述第一引导元件408a与所述第二引导元件408b可以为反射元件,如反射镜。所述第一引导元件408a接收所述第三激发光并将所述第三激发光引导(如反射)至所述合光元件409,所述第二引导元件408b将所述受激光引导(如反射)至所述合光元件409,所述合光元件409将所述第三激发光及所述受激光合光并引导至所述出光通道。具体地,所述合光元件409将所述第三激发光透射至所述出光通道,所述合光元件409将所述受激光反射至所述出光通道。进一步地,本实施方式中,收集透镜407设置于所述波长转换装置406与所述引导装置之间,所述波长转换装置405发出所述受激光经所述收集透镜407收集后达到所述引导装置的第二引导元件408b。
请参阅图12,图12是本发明第八实施方式的光源系统的结构示意图。所述光源系统40’与第七实施方式的光源系统40的结构基本相同,也就是说,上述对所述光源系统40的描述基本上可以应用于所述光源系统40’,二者的差别主要在于:所述光源系统40’还包括补充光源501,所述补充光源501发出补充光,所述补充光具有第一偏振态,第一分光合光装置404还将所述补充光经由光处理装置405与引导装置引导至所述出光通道。具体地,所述补充光源501包括红色激光器,所述补充光包括红色激光,所述第一分光合光装置404将所述补充光透射至所述光处理装置405,所述光处理装置405将所述补充光进一步透射至第一引导元件408a,使得所述第一引导元件408a将所述补充光反射至合光元件409,使得所述合光元件409将所述补充光透射至出光通道。本实施方式中,所述光源系统40’进一步增加了所述补充光源501,可以通过补充光对所述光源系统40’进行特定颜色或特定色域光的补充,使得所述光源系统40’的出光更佳。
可以理解,第七及第八实施方式中,所述光源装置400中的第一及第二光源401、合光装置402、匀光器件403与第一实施方式中的第一及第二光源101、合光装置102及匀光器件103可以相同,此处就不再赘述其结构。
请参阅图13,图13是本发明第九实施方式的光源系统的结构示意图。所述光源系统60与第一实施方式的光源系统10的结构基本相同,也就是说,上述对所述光源系统60的描述基本上可以应用于所述光源系统,二者的差别主要在于:所述光源系统60还包括第二分光合光装置6042,波长转换装置包括第一波长转换元件6071及第二波长转换元件6072。将所述第一分光合光装置6041引导至所述波长转换装置606的所述第二激发光中的另一部分激发光以及所述第一激发光定义为第一光,将所述第一分光合光装置6041引导至所述光处理装置606的所述第二激发光中的一部分激发光定义为第二光,所述第一分光合光装置6041将所述第一光引导至所述第二分光合光装置6042,所述第二分光合光装置6042用于将所述第一光中的第一部分光引导至所述第一波长转换元件6071,所述第二分光合光装置6042还用于将所述第一光中的第二部分光引导至所述第二波长转换元件6072,所述受激光包括第一受激光与第二受激光,所述第一波长转换元件6071将所述第一部分光转换为所述第一受激光,所述第二波长转换元件6072将所述第一光中的第二部分光转为所述第二受激光,所述第一受激光与所述第二受激光均被引导至所述出光通道,其中所述第一部分光在所述第一光中的占比为第二预设比例。
本实施方式中,所述第一波长转换元件6071可以设置有第一荧光材料(如红色荧光材料),所述第一受激光可以为红色光,所述第二波长转换元件6072可以设置有第二荧光材料(如绿色荧光材料),所述第二受激光可以为绿色光。
所述第二分光合光装置6042包括至少一另一透明基板604a’,所述至少一另一透明基板604a’将所述第一光中的所述第一部分光引导至所述第一波长转换元件6071,所述至少一另一透明基板604a’还将所述第一光中的第二部分光引导至所述第二波长转换元件6072,所述第二预设比例与所述第二分光合光装置6042的另一透明基板的数量相适应。所述另一透明基板604a’也可以为白玻璃。本实施方式中,所述另一透明基板604a’的数量可以为两片,且所述两片另一透明基板604a’层叠设置。所述第二分光合光装置6042也可以包括增透膜,所述增透膜可以设置于其中一另一透明基板604a’邻近所述光源装置的表面(如所述增透膜设置于距离所述第一分光合光装置6041最远的另一透明基板的邻近前一另一透明基板的表面)。
本实施方式中,所述第二分光合光装置6042还包括设置于所述至少一另一透明基板604a’远离所述第一分光合光装置6041一侧的第二分光膜604b’。所述第一波长转换元件6071还将所述第一受激光引导至所述第二分光合光装置6042,所述第二波长转换元件6072还将所述第二受激光引导至所述第二分光合光装置6042,所述另一分光膜604b’还用于透射所述第一受激光与所述第二受激光之中的一种受激光以使所述一种受激光被引导至所述出光通道,所述另一分光膜604b’还用于反射所述第一受激光与所述第二受激光之中的另外一种受激光以使所述另外一种受激光被引导至所述出光通道。
所述光源系统60工作时,所述第一分光合光装置6041的至少一透明基板将所述第二激发光中的第一预设比例的激发光(即所述第二光)反射至所述光处理装置606,并将所述第二激发光中的另一部分激发光以及所述第一激发光(即所述第一光)引导至所述第二分光合光装置6042。所述第二分光合光装置6042将所述第二激发光中的另一部分激发光的一部分激发光(即所述第一光中的第一部分光)反射至所述第一波长转换元件6071,所述第二分光合光装置6042还将所述第二激发光中的另一部分激发光以及所述第一激发光(即所述第一光中的第二部分光)透射至所述第二波长转换元件6072。所述光处理装置606接收所述第二激发光中的一部分激发光并发出第三激发光至所述第一分光合光装置6041,所述第一分光合光装置6041将所述第三激发光透射至引导装置,以使所述引导装置将所述第三激发光引导至所述出光通道。所述第一波长转换元件6071发出所述第一受激光至所述第二分光合光装置6042,所述第二波长转换元件6072发出所述第二受激光至所述第二分光合光装置6042,所述第二分光合光装置6042还将所述第一受激光透射至所述引导装置以及将所述第二受激光反射至所述引导装置,以使所述引导装置将所述第一受激光与所述第二受激光引导至所述出光通道。所述引导装置包括引导元件609与合光元件6043,所述第二分光合光装置6042将所述第一受激光与所述第二受激光引导至所述引导元件609(如反射元件),所述引导元件609将所述第一受激光与所述第二受激光的合光引导至所述合光元件6043。所述合光元件6043将所述第三激发光引导(如透射)至所述出光通道,所述合光元件6043还将所述第一受激光与所述第二受激光引导(反射)至所述出光通道。本实施方式中,所述波长转换装置包括第一及第二两个波长转换元件6071与6072,从而可以采用不同于第一实施方式的荧光材料产生两种受激光,使得所述光源系统60对波长转换装置的荧光材料可以有更多的选择。
请参阅图14,图14是本发明第十实施方式的光源系统60’的结构示意图。所述光源系统60’与第九实施方式的光源系统60的结构基本相同,也就是说,上述对所述光源系统60的描述基本上可以应用于所述光源系统60’,二者的差别主要在于:第二分光合光装置6042有所不同。所述第二分光合光装置6042包括偏振分光元件604g(如偏振分光镀膜),所述第二分光合光装置6042将接收到的激发光分光为偏振态不同的所述第一部分激发光与所述第二部分激发光。具体地,所述第二分光合光装置可以将接收到的激发光(即所述第一光)中的第一偏振态的光作为所述第一部分光并将所述第一部分光引导(如反射)至第一波长转换元件,以及将接收到的激发光中的第二偏振态的光作为所述第二部分光并将所述第二部分光引导(如透射)至第二波长转换元件。所述第一波长转换元件6071接收所述第一部分光产生的第一受激光,并将所述第一受激光引导(如反射)至所述第二分光合光装置。所述第二波长转换元件6072接收所述第二部分光产生的第二受激光,并将所述第二受激光引导(如反射)至所述第二分光合光装置。所述第二分光合光装置6042还将所述第一受激光及所述第二受激光通过引导装置引导至出光通道。具体地,所述第二分光合光装置6042透射所述第一受激光并反射所述第二受激光,使得所述第一受激光及所述第二受激光被引导至引导元件609,所述引导元件进一步将所述第一受激光及所述第二受激光引导(如反射)至合光元件6043并被所述合光元件6043引导(如反射)至所述出光通道,进而与第一分光合光装置6041透射的激发光合光。本实施方式中,所述第一受激光为红色受激光,所述第二受激光为绿色受激光,所述第二分光合光装置6042还包括透红光反绿光的分光膜604b,通过此方案的设计,可使红光损失较少,光利用率较高。
可以理解,第九及第十实施方式中,光源装置中的第一及第二光源601、合光装置602、匀光器件603与第一实施方式中的第一及第二光源101、合光装置102及匀光器件103可以相同,光处理装置606的散射元件606a、偏振转换元件605及收集透镜608与第一实施方式中的散射元件106a、偏振转换元件105及收集透镜108a的可以相同,此处就不再赘述其结构。
请参阅图15,图15是本发明第十一实施方式的光源系统70的结构示意图。所述光源系统70与第九实施方式的光源系统60的结构基本相同,也就是说,上述对所述光源系统60的描述基本上可以应用于所述光源系统70,二者的差别主要在于:光处理装置705、波长转换装置有所不同。所述光处理装置705对所述第二激发光中的一部分激发光进行透射及散射以将所述第二激发光中的一部分激发光转换为所述第三激发光,第一波长转换元件7061与第二波长转换元件7062均为透射式波长转换装置,第二分光合光装置7042通过引导元件7081b(如反射元件)将第二部分激发光引导(如反射)至所述第二波长转换元件7062,所述第一波长转换元件7061产生第一受激光并将所述第一受激光引导至所述引导装置,所述第二波长转换元件7062产生第二受激光并将所述第一受激光引导至所述引导装置。所述引导装置接收所述光处理装置705发出的所述第三激发光、所述第一波长转换元件7061发出的第一受激光及所述第二波长转换元件7062发出的第二受激光,并将所述第三激发光、所述第一受激光及所述第二受激光均引导至所述出光通道。
具体地,所述引导装置包括第一引导元件7081a、第一合光元件7082a及第二合光元件7082b,所述第一引导元件7081a接收所述第三激发光并将所述第三激发光引导至所述第一合光元件7082a,所述第一合光元件7082a接收所述第一受激光以及所述第三激发光并将所述第一受激光以及所述第三激发光引导至所述第二合光元件7082b,所述第二波长转换元件7062将所述第二受激光引导至所述第二合光元件7082b,所述第二合光元件7082b将所述第三激发光、所述第一受激光及所述第二受激光合光并引导至所述出光通道。
请参阅图16,图16是本发明第十二实施方式的光源系统70’的结构示意图。所述光源系统70’与第十一实施方式的光源系统70的结构基本相同,也就是说,上述对所述光源系统70的描述基本上可以应用于所述光源系统70’,二者的差别主要在于:所述光源系统70’还包括第一补充光源801a与第二补充光源801b,所述第一补充光源801a发出第一补充光,所述第一补充光被引导至第一分光合光装置7041,所述第一分光合光装置7041还将所述第一补充光经由光处理装置705与引导装置引导至所述出光通道,所述第二补充光源801b发出第二补充光,所述第二补充光被引导至第二分光合光装置7042,所述第二分光合光装置7042还将所述第二补充光经由波长转换装置引导至所述出光通道。具体地,所述第二分光合光装置7042将所述第二补充光透射至所述第一波长转换元件7061,所述第一波长转换元件7061将所述第二补充光透射至引导装置,使得所述引导装置将所述第二补充光引导至所述出光通道。本实施方式中,所述第一补充光源801a与所述第二补充光源801b均为红色补充光源,如红色激光器,所述第一补充光与所述第二补充光均为红色激光。可以理解的是,第一补充光源801a与第二补充光源801b也可以均为绿色补充光源;或者,第一补充光源801a与第二补充光源801b为不同颜色的补充光源。由于增加了红色激光作为补充光,可以对所述光源系统70’进行特定颜色或特定色域光的补充,使得所述光源系统70’的出光更佳。
请参阅图17,图17是本发明第十三实施方式的光源系统70’’的结构示意图。所述光源系统70’’与第十二实施方式的光源系统70’的结构基本相同,也就是说,上述对所述光源系统70’的描述基本上可以应用于所述光源系统70’’,二者的差别主要在于:补充光源的数量不同。所述光源系统70’’还包括第一补充光源801a、第二补充光源801b及第三补充光源901,所述第一补充光源801a发出第一补充光,所述第一补充光被引导至第一分光合光装置7041,所述第一分光合光装置7041还将所述第一补充光经由光处理装置705、第一引导元件7081a、第一合光元件7082a及第二合光元件7082b引导至出光通道。所述第二补充光源801b发出第二补充光,所述第二补充光被引导至第二分光合光装置7042,所述第二分光合光装置7042还将所述第二补充光经由所述第一波长转换元件7061、所述第一合光元件7082a及所述第二合光元件7082b引导至所述出光通道。所述第三补充光源901发出第三补充光,所述光源系统70’’还包括第二引导元件7081b,所述第三补充光被引导至所述第二引导元件7081b,所述第二引导元件7081b还将所述第三补充光经由所述第二波长转换元件7062及第二合光元件7082b引导至所述出光通道。本实施方式中,所述第一补充光源801a与所述第二补充光源801b均为红色补充光源,所述第一补充光与所述第二补充光均为红色激光,所述第三补充光源901为绿色补充光源,所述第三补充光为绿色激光,由于增加了红色激光与绿色激光作为补充光,可以对所述光源系统70’’进行特定颜色或特定色域光的补充,使得所述光源系统70’’的出光更佳。
可以理解,第一、十二及十三实施方式中,光源装置中的第一及第二光源701、合光装置702、匀光器件703与第一实施方式中的第一及第二光源101、合光装置102及匀光器件103可以相同,光处理装置705及收集透镜707与第七实施方式中的散射元件405及第一实施方式中的收集透镜108b的可以相同,此处就不再赘述其结构。
请参阅图18及19,图18是本发明第十四实施方式的光源系统10’的结构示意图,图19是图18所示的光源系统10’的第一分光合光装置1104的平面结构示意图。所述光源系统10’与第一实施方式的光源系统10的结构基本相同,也就是说,上述对所述光源系统10的描述基本上可以应用于所述光源系统10’,二者的差别主要在于:所述至少一透明基板1104a的用于接收所述第一激发光与所述第二激发光的表面41(即第一透明基板的第一表面)包括第一区域41a与位于所述第一区域41a外围的第二区域41b,所述第二区域41b设置有增透膜1104h。本实施方式中,所述至少一透明基板1104a玻璃采用区域镀膜,即位于中心的第一区域41a采用不镀膜,位于边缘的第二区域41b设置有增透膜。
由于第一及第二激发光的光学扩展量小,因此在所述第一区域41a处,激发光的光束的边界范围较小,在中心的所述第一区域41a利用45°所述至少一透明基板1104a对偏振光的透过率特性进行分光。而经过光处理装置1106的第三激发光的光学扩展量大,在所述第一区域41a处的光束边界范围大,因此在中心的所述第一区域41a有较小的反射损失,而在边缘的第二区域41b经过增透膜1104h完全透射,从而相对于完全不镀膜的透明基板,所述至少一透明基板1104a进一步提高了光学利用率。
请参阅图20,图20是本发明第十五实施方式的光源系统的第一分光合光装置1104’的平面结构示意图。所述光源系统与第十四实施方式的光源系统的结构基本相同,也就是说,上述对所述光源系统的描述基本上可以应用于所述光源系统,二者的差别主要在于:所述第一分光合光装置1104’的至少一透明基板接收所述第一激发光与所述第二激发光的表面41的(未设置增透膜的)第一区域41a’与(设置有增透膜)的第二区域41b’的区域数量有所不同。本实施方式中,所述第一激发光及所述第二激发光在所述第一分光合光装置1104’接收所述第一激发光与所述第二激发光的表面41形成有多个光斑,所述第一区域41a’的数量为多个,所述第一区域41a’与所述光斑一一对应。
对于采用diffuser作为匀光器件1103的光源系统,所述第一激发光与所述第二激发光在所述第一区域41a处形成独立的激发光斑,如图20所示,此时,针对于激发光斑的形状及大小,设置无增透膜区域(即第一区域41a’),使所述第一区域41a’利用45°透明基板对偏振光的透过率特性进行分光(即激发光以45度入射角入射到第一分光合光装置1104’的第一区域41a’),经过光处理装置的散射光(即第三激发光)的光学扩展量大,在所述第一区域41a处的光束边界范围大,因此在无增透膜的所述第一区域41a有较小的反射损失,而在有增透膜的第二区域41b完全透射,所述第一分光合光装置1104’提高了光学利用率。
可以理解,第十四及十五实施方式中,光源装置中的第一及第二光源1101、合光装置1102、匀光器件1103与第一实施方式中的第一及第二光源101、合光装置102及匀光器件103可以相同,光处理装置的散射元件1106、偏振转换元件1105及收集透镜1108与第一实施方式中的散射元件106a、偏振转换元件105及收集透镜108a可以相同,此处就不再赘述其结构。
请参阅图21,图21是本发明一较佳实施方式的显示设备的方框示意图。所述显示设备90可以为投影设备,如LCD、DLP、LCOS投影设备,所述显示设备90可以包括光源系统91、光机系统92及投影镜头93,所述光源系统91采用上述任意一实施方式的光源系统或者上述提到的光源系统的变更实施方式的光源系统。所述光机系统92可依据图像数据对所述光源系统发出的光源光进行图像调制以产生显示图像所需要的投影光,所述投影镜头93用于依据所述投影光进行投影而显示投影图像。采用上述光源系统及其变更实施方式的光源系统的显示设备90的体积较小。
另外,可以理解,本发明光源系统及其变更实施方式的光源系统还可以用于舞台灯系统、车载照明系统及手术照明系统等,并不限于上述的投影设备。
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 (28)

1.一种光源系统,其特征在于,所述光源系统包括光源装置、第一分光合光装置、波长转换装置、及光处理装置,
所述光源装置用于发出第一激发光及第二激发光,其中,所述第一激发光具有第一偏振态,所述第二激发光具有不同于所述第一偏振态的第二偏振态,所述第一激发光与所述第二激发光的光通量之比为预设值;
所述第一分光合光装置包括至少一透明基板,所述至少一透明基板用于将所述第二激发光中的第一预设比例的激发光引导至所述光处理装置与所述波长转换装置其中的一个,以及将所述第二激发光中的另一部分激发光以及所述第一激发光引导至所述光处理装置与所述波长转换装置中的另外一个,所述第一预设比例与所述第一分光合光装置的透明基板的数量相适应;
所述光处理装置用于将接收到的激发光进行散射并发出第三激发光;
所述波长转换装置用于将接收到的激发光转换为受激光;
所述第三激发光和所述受激光还被引导至出光通道,从出光通道出射的合光满足预定的亮度和色温。
2.如权利要求1所述的光源系统,其特征在于:所述光源装置包括第一光源与第二光源,所述第一光源用于发出第一激发光,所述第二光源用于发出第二激发光,所述光源系统包括光源控制器,所述光源控制器用于控制所述第一光源与所述第二光源发出的第一激发光与所述第二激发光的光量比例等于所述预设值。
3.如权利要求2所述的光源系统,其特征在于:所述第一光源与所述第二光源均包括发光元件,所述光源控制器通过控制所述第一光源与所述第二光源的发光元件的开启与关闭的数量来控制所述第一激发光与所述第二激发光的光量比例等于所述预设值。
4.如权利要求2所述的光源系统,其特征在于:所述第一光源与所述第二光源均包括发光元件,所述光源控制器通过控制所述第一光源与所述第二光源的发光元件的发光功率来控制所述第一激发光与所述第二激发光的光量比例等于所述预设值。
5.如权利要求1所述的光源系统,其特征在于:所述第一分光合光装置包括一片透明基板,所述一片透明基板用于将所述第二激发光中的第一预设比例的激发光引导至所述光处理装置与所述波长转换装置其中的一个,以及将所述第二激发光中的另一部分激发光和所述第一激发光引导至所述光处理装置与所述波长转换装置中的另外一个。
6.如权利要求1所述的光源系统,其特征在于:所述第一分光合光装置包括至少两片层叠设置的透明基板,所述第一分光合光装置还包括增透膜,所述增透膜设置于其中一透明基板邻近所述光源装置的表面。
7.如权利要求6所述的光源系统,其特征在于:所述增透膜设置于距离所述光源装置最远的透明基板的邻近前一透明基板的表面。
8.如权利要求7所述的光源系统,其特征在于:所述至少一透明基板接收所述第一激发光与所述第二激发光的表面包括第一区域与位于所述第一区域外围的第二区域,所述增透膜设置于所述第一区域。
9.如权利要求8所述的光源系统,其特征在于:所述第一激发光及所述第二激发光在所述至少一透明基板接收所述第一激发光与所述第二激发光的表面形成有多个光斑,所述第一区域的数量为多个,所述第一区域与所述光斑一一对应。
10.如权利要求1所述的光源系统,其特征在于:所述透明基板为白玻璃。
11.如权利要求1所述的光源系统,其特征在于:所述第一分光合光装置还包括第一分光膜,所述第一分光膜设置于所述至少一透镜基板远离所述光源装置的一侧,所述第一分光膜用于将所述至少一透明基板引导的所述第二激发光中的另一部分激发光以及所述第一激发光的透射。
12.如权利要求11所述的光源系统,其特征在于:所述第一分光膜还用于将所述波长转换装置发出的受激光反射以将所述受激光引导至所述出光通道,所述第一分光合光装置还将所述第三激发光透射以将所述第三激发光引导至所述出光通道。
13.如权利要求12所述的光源系统,其特征在于:所述光处理装置对所述第二激发光中的一部分激发光进行散射以及偏振态的转换从而将所述第二激发光中的一部分激发光转换为所述第三激发光,所述第三激发光具有第一偏振态,所述光处理装置将所述第三激发光引导至所述第一分光合光装置,所述波长转换装置还将所述受激光引导至所述第一分光合光装置,所述至少一透明基板及分光膜还将所述光处理装置发出的第三激发光透射至所述出光通道,所述分光膜还将所述波长转换装置发出的受激光反射至所述出光通道。
14.如权利要求13所述的光源系统,其特征在于:所述光处理装置包括散射元件与偏振转换元件,所述至少一透明基板将所述第二激发光中的一部分激发光引导至所述偏振转换元件,所述偏振转换元件对所述第二激发光中的一部分激发光进行第一次偏振转换后将所述已进行第一次偏振转换的所述第二激发光中的一部分激发光引导至所述散射元件,所述散射元件对所述已进行第一次偏振转换的所述第二激发光中的一部分激发光进行散射并将散射后且已进行第一次偏振转换的所述第二激发光中的一部分激发光引导至所述偏振转换元件,所述偏振转换元件将所述散射后且已进行第一次偏振转换的所述第二激发光中的一部分激发光进行第二次偏振转换得到所述第三激发光。
15.如权利要求1所述的光源系统,其特征在于:所述光处理装置对所述第二激发光中的一部分激发光进行透射及散射以将所述第二激发光中的一部分激发光转换为所述第三激发光,所述波长转换装置为透射式波长转换装置,所述光源系统还包括引导装置,所述引导装置接收所述光处理装置发出的所述第三激发光及所述波长转换装置发出的受激光并将所述第三激发光及所述受激光均引导至所述出光通道。
16.如权利要求15所述的光源系统,其特征在于:所述引导装置包括第一引导元件、第二引导元件、及合光元件,所述第一引导元件接收所述第三激发光并将所述第三激发光引导至所述合光元件,所述第二引导元件将所述受激光引导至所述合光元件,所述合光元件将所述第三激发光及所述受激光合光并引导至所述出光通道。
17.如权利要求15所述的光源系统,其特征在于:所述光源系统还包括补充光源,所述补充光源发出补充光,所述补充光具有第一偏振态,所述第一分光合光装置还将所述补充光经由所述光处理装置与所述引导装置引导至所述出光通道。
18.如权利要求1所述的光源系统,其特征在于:将所述第一分光合光装置引导至所述波长转换装置的所述第二激发光中的另一部分激发光以及所述第一激发光定义为第一光,将所述第一分光合光装置引导至所述光处理装置的所述第二激发光中的一部分激发光定义为第二光,所述光源系统还包括第二分光合光装置,所述波长转换装置包括第一波长转换元件及第二波长转换元件,所述第一分光合光装置将所述第一光引导至所述第二分光合光装置,所述第二分光合光装置用于将所述第一光中的第一部分光引导至所述第一波长转换元件,所述第二分光合光装置还用于将所述第一光中的第二部分光引导至所述第二波长转换元件,所述受激光包括第一受激光与第二受激光,所述第一波长转换元件将所述第一部分光转换为所述第一受激光,所述第二波长转换元件将所述第一光中的第二部分的激发光转为所述第二受激光,所述第一受激光与所述第二受激光均被引导至所述出光通道,其中所述第一部分光在所述第一光中的占比为第二预设比例。
19.如权利要求18所述的光源系统,其特征在于:所述第二分光合光装置包括偏振分光元件,所述第一部分光与所述第二部分光的偏振态不同。
20.如权利要求18所述的光源系统,其特征在于:所述第二分光合光装置包括至少一另一透明基板,所述至少一另一透明基板将所述第一光中的所述第一部分光引导至所述第一波长转换元件,所述至少一另一透明基板还将所述第一光中的第二部分光引导至所述第二波长转换元件,所述第二预设比例与所述第二分光合光装置的另一透明基板的数量相适应。
21.如权利要求20所述的光源系统,其特征在于:所述第一波长转换元件还将所述第一受激光引导至所述第二分光合光装置,所述第二波长转换元件还将所述第二受激光引导至所述第二分光合光装置,所述第二分光合光装置还包括设置于所述至少一另一透明基板远离所述第一分光合光装置一侧的第二分光膜,所述第二分光膜还用于透射所述第一受激光以使所述第一受激光被引导至所述出光通道,所述第二分光膜还用于反射所述第二受激光以使所述第二受激光被引导至所述出光通道。
22.如权利要求21所述的光源系统,其特征在于:所述光源系统还包括引导装置,所述引导装置接收所述光处理装置发出的所述第三激发光、所述第一波长转换元件发出的第一受激光及所述第二波长转换元件发出的第二受激光,并将所述第三激发光、所述第一受激光及所述第二受激光均引导至所述出光通道,所述引导装置包括引导元件与合光元件,所述引导元件接收所述另一分光膜透射的所述第一受激光及所述另一分光膜反射的所述第二受激光并将所述第一受激光及第二受激光引导至所述合光元件,所述第一分光合光装置还将所述光处理装置发出的所述第三激发光透射至所述合光元件,所述合光元件将所述第一受激光、第二受激光及所述第三激发光合光。
23.如权利要求18所述的光源系统,其特征在于:所述光处理装置对所述第二光进行透射及散射以将所述第二光转换为所述第三激发光,所述第一波长转换元件与所述第二波长转换元件均为透射式波长转换装置,所述光源系统还包括引导装置,所述引导装置接收所述光处理装置发出的所述第三激发光、所述第一波长转换元件发出的第一受激光及所述第二波长转换元件发出的第二受激光,并将所述第三激发光、所述第一受激光及所述第二受激光均引导至所述出光通道。
24.如权利要求23所述的光源系统,其特征在于:所述引导装置包括第一引导元件、第二引导元件、第一合光元件及第二合光元件,所述第一引导元件接收所述第三激发光并将所述第三激发光引导至所述第一合光元件,所述第一波长转换元件将所述第一受激光引导至所述第一合光元件,所述第一合光元件将所述第一受激光以及所述第三激发光引导至所述第二合光元件,所述第二引导元件接收所述第二分光合光装置发出的所述第二部分光,并将所述第二部分光引导至所述第二波长转换元件,所述第二波长转换元件将所述第二受激光引导至所述第二合光元件,所述第二合光元件将所述第三激发光、所述第一受激光及所述第二受激光合光并引导至所述出光通道。
25.如权利要求24所述的光源系统,其特征在于:所述光源系统还包括第一补充光源与第二补充光源,所述第一补充光源发出第一补充光,所述第一补充光被引导至所述第一分光合光装置,所述第一分光合光装置还将所述第一补充光经由所述光处理装置与所述引导装置引导至所述出光通道,所述第二补充光源发出第二补充光,所述第二补充光被引导至所述第二分光合光装置,所述第二分光合光装置还将所述第二补充光经由所述波长转换装置引导至所述出光通道。
26.如权利要求25所述的光源系统,其特征在于:所述光源系统还包括第三补充光源,所述第三补充光源发出第三补充光,所述第三补充光被引导至所述第二引导元件,所述第二引导元件还将所述第三补充光经由所述第二合光元件引导至所述出光通道。
27.如权利要求2所述的光源系统,其特征在于:所述光源装置包括合光装置及匀光器件,所述合光装置透射所述第一激发光与所述第二激发光中的一种且反射所述第一激发光与所述第二激发光中的另外一种,使得所述第一激发光与所述第二激发光被合光并提供至所述匀光器件,所述匀光器件位于所述合光装置与所述第一分光合光装置之间,用于对所述合光装置发出的所述第一激发光与所述第二激发光进行匀光并将匀光后的所述第一激发光与所述第二激发光引导至所述第一分光合光装置。
28.一种显示设备,所述显示设备包括光源系统,其特征在于:所述光源系统采用如权利要求1-27项任意一项所述的光源系统。
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