WO2022057675A1 - 光源装置及激光投影*** - Google Patents

光源装置及激光投影*** Download PDF

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Publication number
WO2022057675A1
WO2022057675A1 PCT/CN2021/116807 CN2021116807W WO2022057675A1 WO 2022057675 A1 WO2022057675 A1 WO 2022057675A1 CN 2021116807 W CN2021116807 W CN 2021116807W WO 2022057675 A1 WO2022057675 A1 WO 2022057675A1
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Prior art keywords
light
polarization state
excitation
excitation light
polarization
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PCT/CN2021/116807
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English (en)
French (fr)
Inventor
张翠萍
蒲栋
陈彦哲
李屹
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深圳光峰科技股份有限公司
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Publication of WO2022057675A1 publication Critical patent/WO2022057675A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2073—Polarisers in the lamp house
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light

Definitions

  • the present application relates to the field of laser modulation, and in particular, to a light source device and a laser projection system.
  • Micro-projection products usually adopt the scheme of single-chip spatial light modulator, and use the three-primary color display of the time integration principle to form a full-color display.
  • the light source scheme of RGB three-color LED is widely used in micro-projection, that is, full-color display is performed by using the principle of RGB switching repeatedly in sequence.
  • the LED etendue per unit area is large, in the projection system, due to the limitation of the etendue, the brightness of the LED micro-projection is limited, and it can usually only be used in low-brightness displays.
  • Laser fluorescent light source which can take advantage of its small etendue to achieve higher brightness display, has also been used in micro-projection systems in recent years.
  • the most commonly used method is to use a blue laser to excite a segmented fluorescent color wheel, generate RGB illumination light in turn, and achieve full color through time integration.
  • the precision of the rotation speed of the color wheel motor is extremely high, which leads to the high cost of the color wheel.
  • due to the size limitation of the color wheel motor it is difficult to further reduce the size of the light source part, and it is difficult to apply it in micro-projection products that require extremely high size and portability.
  • a technical solution adopted in this application is to provide a light source device, the light source device comprising:
  • a first light source for emitting excitation light
  • a first polarization regulator arranged on the optical path of the excitation light, for regulating the polarization state of the excitation light
  • the first light homogenizer is arranged on the optical path of the outgoing light modulated by the first polarization regulator, and is used for homogenizing the excitation light of the first polarization state or the excitation light of the second polarization state;
  • the first light splitting and combining element is arranged on the light path of the outgoing light of the first homogenizer, and is used for reflecting the excitation light of the first polarization state or transmitting the excitation light of the second polarization state;
  • the first wavelength conversion device is arranged on the optical path of the excitation light of the first polarization state reflected by the first light splitting and combining element, receives the excitation light of the first polarization state, and converts the wavelength to emit the first light;
  • the second wavelength conversion device is arranged on the optical path of the excitation light of the second polarization state transmitted by the first light splitting and combining element, receives the excitation light of the second polarization state, and converts the wavelength to emit the second light;
  • the first light splitting and combining element receives the first light and the second light emitted by the first wavelength conversion device and the second wavelength conversion device, and transmits the first light and reflects the second light.
  • the first wavelength conversion device is a first phosphor powder
  • the light source device further includes a first lens assembly
  • the first lens assembly is arranged on the optical path of the excitation light of the first polarization state reflected by the first light splitting and combining member, The excitation light of the first polarization state is focused on the first phosphor, and the first light emitted by the first phosphor is collected.
  • the second wavelength conversion device is a second phosphor powder
  • the light source device further includes a second lens assembly
  • the second lens assembly is arranged on the optical path of the excitation light of the second polarization state transmitted by the first light splitting and combining member, The excitation light of the second polarization state is focused on the second phosphor, and the second light emitted by the second phosphor is collected.
  • the light source device further includes:
  • the second light homogenizer is arranged on the optical path of the outgoing light of the first light splitting and light combining element, and is used for homogenizing the first light and the second light;
  • the first scattering device is arranged on the optical path of the blue laser, and is used for scattering the blue laser to obtain blue light;
  • the third homogenizer is arranged on the light path of the blue light, and is used for homogenizing the blue light;
  • the second light splitting and light combining element is arranged on the light path of the outgoing light of the second light homogenizer and the third light homogenizer, and is used to combine the blue light, the first light and the second light after the light homogenization treatment, so as to Outgoing synthetic light.
  • the light source fixture further includes:
  • the second light homogenizer is arranged on the optical path of the outgoing light of the first light splitting and light combining element, and is used for homogenizing the first light and the second light;
  • a second light source for emitting blue light within a time interval
  • the third homogenizer is arranged on the light path of the blue light, and is used for homogenizing the blue light;
  • the second light splitting and light combining element is arranged on the light path of the outgoing light of the second light homogenizer and the third light homogenizer, and is used to combine the blue light, the first light and the second light after the light homogenization treatment, so as to Outgoing synthetic light.
  • the light source device further includes:
  • the second polarization regulator is arranged on the optical path of the excitation light, and is used for regulating the polarization state of the excitation light, so as to emit the excitation light of the third polarization state or the excitation light of the fourth polarization state;
  • a polarization selector arranged on the optical path of the outgoing light modulated by the second polarization regulator, for reflecting the excitation light of the third polarization state or transmitting the excitation light of the fourth polarization state;
  • the excitation light of the fourth polarization state is used as the excitation light source of the first wavelength conversion device and the second wavelength conversion device, and the excitation light of the fourth polarization state is regulated by the first polarization regulator to emit the excitation light of the first polarization state or excitation light of the second polarization state.
  • the light source device further includes:
  • the second light homogenizer is arranged on the optical path of the outgoing light of the first light splitting and light combining element, and is used for homogenizing the first light and the second light;
  • a reflector arranged on the optical path of the excitation light of the third polarization state reflected by the polarization selector, and used to change the propagation path of the excitation light of the third polarization state;
  • the scattering device is arranged on the optical path of the outgoing light of the reflector, and is used for scattering the excitation light of the third polarization state to obtain the third light;
  • the second light splitting and combining element is arranged on the optical path of the third light, and is used for combining the first light, the second light and the third light after the homogenization treatment, so as to emit the combined light.
  • the first phosphor powder and the second phosphor powder include at least one of a fixed phosphor powder and a non-segmented rotating phosphor wheel.
  • a laser projection system which includes the above-mentioned light source device, power supply, main board and projection screen, and the power supply is connected to the light source device and the projection screen.
  • the main board is connected to the light source device, and the projection screen is used for receiving the polarized light modulated by the light source device.
  • the light-emitting device of the light source device includes phosphor powder and a light-emitting light source, and the phosphor powder includes at least one of a fixed phosphor powder and a non-segmented rotating phosphor wheel.
  • the present application adds a first polarization regulator for regulating the polarization state of the excitation light, and the first polarization regulator converts the excitation light emitted by the first light source into the excitation light of the first polarization state light, and then excite the first wavelength conversion device to emit the first light, or convert the excitation light emitted by the first light source into excitation light of the second polarization state, and then excite the second wavelength conversion device to emit the second light, through a single first polarization
  • the regulator excites the first wavelength conversion device and the second wavelength conversion device, which can improve work efficiency and reduce cost.
  • the first polarization regulator only emits excitation light of one polarization state at a time, so that the first wavelength conversion device receives all the excitation lights of the first polarization state emitted by the first polarization regulator, or the second wavelength conversion device receives the first polarization state. All the excitation light of the second polarization state emitted by the polarization regulator, thereby realizing the full-load operation of the first wavelength conversion device or the second wavelength conversion device, and effectively improving the first light or the second wavelength conversion device emitted by the first wavelength conversion device. The brightness of the second light emitted.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a light source device of the present application
  • FIG. 2 is a schematic structural diagram of a second embodiment of a light source device of the present application.
  • Fig. 3 is the corresponding relation diagram of the first polarization regulator of the present application and the first light source power switch;
  • FIG. 4 is a schematic structural diagram of a third embodiment of a light source device of the present application.
  • FIG. 5 is a schematic structural diagram of a fourth embodiment of a light source device of the present application.
  • FIG. 6 is a schematic structural diagram of an embodiment of the laser projection system of the present application.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a light source device of the present application.
  • the light source device 1 includes a first light source 10 , a first polarization regulator 11 , a first light homogenizer 12 , a first wavelength conversion device 21 , a second wavelength conversion device 31 and a first light splitting and combining element 40 .
  • the first light source 10 is used for emitting excitation light, and the excitation light is used as the excitation light source of the first wavelength conversion device 21 and the second wavelength conversion device 31 .
  • the first light source 10 may be a laser or LED light source.
  • the laser may be a blue laser or a red laser, etc.
  • the LED light source may be a blue LED light source or a UV-LED light source, or the like.
  • the first polarization regulator 11 is disposed on the optical path of the excitation light, and is used for regulating the polarization state of the excitation light, so as to emit the excitation light of the first polarization state or the excitation light of the second polarization state.
  • the first polarization regulator 11 in this embodiment is an electronically controlled liquid crystal panel. By changing the voltage of the electronically controlled liquid crystal panel, the deflection state of the liquid crystal is changed, so that the excitation light passes through the electronically controlled liquid crystal panel in different polarization states. Different from the common liquid crystal display panel, the first polarization regulator 11 in this embodiment only needs to perform overall deflection regulation on the liquid crystal, and does not require independent pixel regulation.
  • the aperture ratio of the electronically controlled liquid crystal panel is high, and the transmittance is high.
  • the polarizer and the analyzer are not required, there is no problem of heat dissipation, and the reliability of the electronically controlled liquid crystal panel can be improved.
  • the excitation light of the first polarization state may be blue laser light with a preset polarization direction, blue LED light, UV light or excitation light of other colors, etc.; the excitation light of the second polarization state may be the same as that of the first polarization state.
  • the excitation light of the polarization state is orthogonally polarized blue laser light, blue LED light, UV light or other color excitation light, and so on.
  • “Polarization” is a universal property of all kinds of lasers, which is determined by the principle by which the laser is formed.
  • the laser beam is formed by the stimulated radiation of particles of the luminescent medium within the laser.
  • Stimulated radiation has distinct characteristics: when a foreign photon irradiates a particle of the upper energy level of the laser, the particle radiates a photon and transitions to the lower energy level, and the photon generated by the stimulated radiation has the same phase, the same propagation direction and the same polarization state.
  • stimulated radiation in a laser forms a photon stream
  • all photons in a mode photon stream have the same phase, the same direction of propagation, and the same polarization state.
  • a laser longitudinal mode (frequency) must be polarized.
  • the polarization states of the adjacent longitudinal modes of the laser are either parallel or vertical.
  • a laser "orthogonally polarized" means that two adjacent frequencies of the laser have mutually perpendicular polarization states.
  • a pair of left and right circularly polarized light should also be regarded as orthogonally polarized light.
  • the first polarization regulator 11 may be other devices whose polarization state can be adjusted.
  • the first homogenizer 12 is arranged on the optical path of the excitation light of the first polarization state, or is arranged on the optical path of the excitation light of the second polarization state, and is used to excite the excitation light of the first polarization state or the excitation light of the second polarization state.
  • the light is homogenized.
  • the first light homogenizer 12 in this embodiment may be a fly-eye lens or a square rod.
  • a higher utilization rate of light energy and uniform illumination of a large area can be obtained, and the uniformity of the excitation light emitted by the first light source 10 can be improved.
  • the first light splitting and combining element 40 is disposed on the light path of the outgoing light of the first light homogenizer 12, and is used for reflecting the excitation light of the first polarization state or transmitting the excitation light of the second polarization state.
  • the first light splitting and combining element 40 is provided with a polarizing light splitting film, which reflects the excitation light in a specific polarization direction and transmits the excitation light orthogonally polarized with the excitation light in the specific polarization direction, that is, the excitation of the first polarization state is reflected. light, the excitation light of the second polarization state is transmitted.
  • the first wavelength conversion device 21 is disposed on the optical path of the excitation light of the first polarization state emitted by the first light splitting and combining element 40 , receives the excitation light of the first polarization state and performs wavelength conversion to emit the first light.
  • the first wavelength conversion device 21 is a first phosphor.
  • the first phosphor can be a fixed phosphor or a non-segmented rotating phosphor wheel, specifically a red phosphor or a pure red phosphor wheel, that is, the first light emitted by the first wavelength conversion device 21 is: red light.
  • the first fluorescent powder has low requirements on the motor precision, avoiding the limitation in size and cost of the motor of the traditional segmented color wheel.
  • the first phosphor of this embodiment does not require the synchronous control of the motor and other components, which reduces the requirement for the accuracy of the motor speed, avoids the motor from working at high speed, reduces system noise, improves the heat dissipation performance of the phosphor, and reduces production costs.
  • the second wavelength conversion device 31 is disposed on the optical path of the excitation light of the second polarization state transmitted by the first light splitting and combining element 40 , receives the excitation light of the second polarization state and performs wavelength conversion to emit the second light.
  • the second wavelength conversion device 31 is a second phosphor.
  • the second phosphor can be a fixed phosphor or a non-segmented rotating phosphor wheel, specifically a green phosphor or a pure green phosphor wheel, that is, the second light emitted by the second wavelength conversion device 31 is: green light.
  • the second fluorescent powder has low requirements on the motor precision, avoiding the limitation in size and cost of the motor of the traditional segmented color wheel.
  • the second phosphor of this embodiment does not require the synchronous control of the motor and other components, which reduces the requirement for the accuracy of the motor speed, avoids the motor from working at high speed, reduces system noise, improves the heat dissipation performance of the phosphor, and reduces production costs.
  • the first phosphor powder may be a green phosphor powder or a pure green phosphor powder wheel
  • the second phosphor powder may be a red phosphor powder or a pure red phosphor powder wheel, that is, the output of the first wavelength conversion device 21 .
  • the first light may be green light
  • the second light emitted by the second wavelength conversion device 31 may be red light.
  • the first light splitting and combining element 40 receives the first light and the second light emitted by the first wavelength conversion device 21 and the second wavelength conversion device 31, and transmits the first light and reflects the second light.
  • FIG. 2 is a schematic structural diagram of a second embodiment of the light source device of the present application.
  • the light source device 1 further includes a first lens group 22 and a second lens group 32 .
  • the first lens assembly 22 is disposed on the optical path of the excitation light of the first polarization state reflected by the first light splitting and combining element 40
  • the second lens assembly 32 is disposed on the second polarization that is transmitted by the first light splitting and combining element 40 . on the optical path of the excitation light of the state.
  • the first lens group 22 further includes a first lens 221 and a second lens 222. Both the first lens 221 and the second lens 222 are convex lenses. The excitation light is focused on the first phosphor, so that the first phosphor is excited to emit the first light; at the same time, the first lens group 22 is used to collect the scattered first light and condense the first light into the first split light Piece 40.
  • the first lens group 22 may include three or more lenses, such as three, four, five, and the like.
  • the second lens group 32 further includes a third lens 321 and a fourth lens 322. Both the third lens 321 and the fourth lens 322 are convex lenses.
  • the second lens group 32 is provided with a biconvex lens to convert the second polarization state The excitation light converges to the second phosphor, so that the second phosphor is excited to emit the second light; at the same time, the second lens group 32 is used to collect the second scattered light, and condense the second light to the first photosynthesis Optical element 40 .
  • the second lens group 32 may include three or more lenses, such as three, four, five, and the like.
  • the light source device 1 of this embodiment further includes a laser 52 , a first scattering device 53 and a third light homogenizer 51 .
  • the laser 52 is used to emit blue laser light, that is, the laser 52 is a blue laser.
  • the first scattering device 53 is disposed on the optical path of the blue laser light, and is used for scattering the blue laser light to obtain blue light. Alternatively, the first scattering device 53 may be a scattering film.
  • the third light homogenizer 51 is disposed on the light path of the blue light, and is used for performing homogenization processing on the blue light.
  • FIG. 3 is a diagram showing the corresponding relationship between the first polarization regulator and the first light source power switch of the present application.
  • the first polarization modifier 11 is provided with a first state and a second state.
  • the first polarization regulator 11 is in the first state; when the operating voltage of the first polarization regulator 11 is the second voltage, the first polarization regulator 11 is in the first state at this time
  • the controller 11 is in the second state.
  • the first polarization regulator 11 Since the first polarization regulator 11 is an electronically controlled liquid crystal panel, the liquid crystal is deflected when the voltage is changed, and it takes a period of time for the liquid crystal to be deflected from the first state to the second state. Therefore, the first polarization regulator 11 is in the first There is a time interval for switching between the state and the second state, that is, there is a time interval between the excitation light of the first polarization state and the excitation light of the second polarization state emitted by the first polarization regulator 11 .
  • the first polarization regulator 11 cannot instantaneously change the polarization state of the excitation light emitted by the first light source 10. Therefore, during the switching between the first state and the second state, The first light source 10 is turned off, and when the liquid crystal deflection of the first polarization regulator 11 is stabilized, the first light source 10 is turned on again. In this embodiment, the first light source 10 is turned off during the liquid crystal deflection process, and the first light source 10 is turned on after the liquid crystal deflection of the first polarization regulator 11 is stabilized, which can solve the problem that the first polarization regulator 11 cannot emit light to the first light source 10 . The problem of color crosstalk caused by the instantaneous change of the polarization state of the excitation light.
  • the optical three primary colors include red, green and blue. By mixing these three primary colors in different proportions and strengths, various color changes in nature can be produced.
  • the present application provides a first wavelength conversion device 21 , a second wavelength conversion device 31 and a laser 52 to emit red light, green light and blue light.
  • the specific working process of the light source device 1 of the present application is as follows:
  • the first wavelength conversion device 21 receives the excitation light of the first polarization state output by the first polarization regulator 11 and performs The wavelength is converted to emit red light; at this time, the laser 52 is turned off.
  • the liquid crystal contained in the first polarization regulator 11 is converted from the first polarization state to the second polarization state, that is, the first polarization regulator 11 is in one of the first state and the second state
  • the first light source 10 is turned off and the laser 52 is turned on, and the blue laser light output by the laser 52 emits blue light through the first scattering device 53 .
  • the laser 52 is turned off and the first light source 10 is turned on, and the second wavelength conversion device 31 receives the first polarization regulator 11
  • the output excitation light of the second polarization state is subjected to wavelength conversion to emit green light.
  • the laser 52 and the first scattering device 53 are used between the time when the first polarization regulator 11 excites the first wavelength conversion device 21 to output red light and the first polarization regulator 11 excites the second wavelength conversion device 31 to output green light.
  • the blue light is emitted, and the image display of the projection system is realized by mixing the three primary colors.
  • the supplementary blue light is mixed between the red light and the green light to provide the adjustment time for the first polarization regulator 11 to prevent the first polarization regulator 11 from being unable to The color crosstalk caused by the instantaneous change of the polarization state of the excitation light emitted from the first light source 10 .
  • the light source device 1 of this embodiment further includes a second light homogenizer 41 and a second light splitting and light combining element 42 .
  • the second light homogenizer 41 is arranged on the optical path of the outgoing light of the first light splitting and combining element 40, and is used for performing homogenization processing on the first light and the second light.
  • the second light splitting and combining element 42 is disposed on the optical path of the emitted light from the second light homogenizer 41 and the third light homogenizer 51, and is used to combine the blue light, the first light and the second light after the light homogenization treatment. , to emit the combined light to the next-level projection system.
  • the second light splitting and combining element 42 in this embodiment is a dichroic plate, which is selected according to wavelength, reflects short wavelength light and transmits long wavelength light, that is, reflects blue light and transmits red light and green light.
  • the blue light, the red light and the green light are combined and processed by the second light splitting and combining element 42 to form combined light, which is output to the next-level projection system to realize full-color display of three primary colors.
  • FIG. 4 is a schematic structural diagram of a third embodiment of the light source device of the present application.
  • the light source device 1 of this embodiment is provided with a second light source 50 for emitting blue light.
  • the second light source 50 is a blue LED.
  • the production cost can be reduced by setting the second light source 50 to replace the laser 52 and the first scattering device 53 .
  • FIG. 5 is a schematic structural diagram of a fourth embodiment of a light source device of the present application.
  • the light source device 1 of this embodiment further includes a second polarization regulator 13 , a polarization selector 14 , a reflection mirror 15 , and a second scattering device 16 .
  • the second polarization regulator 13 is disposed on the optical path of the excitation light, and is used for regulating the polarization state of the excitation light, so as to emit the excitation light of the third polarization state or the excitation light of the fourth polarization state.
  • the second polarization regulator 13 is an electrically controlled liquid crystal panel. By changing the voltage of the electrically controlled liquid crystal panel, the deflection state of the liquid crystal is changed, so that the excitation light passes through the electrically controlled liquid crystal panel in different polarization states.
  • the second polarization regulator 13 may be other devices that can control the polarization state.
  • the polarization selector 14 is arranged on the optical path of the excitation light of the third polarization state, or is arranged on the optical path of the excitation light of the fourth polarization state, and is used to reflect the excitation light of the third polarization state or transmit the excitation light of the fourth polarization state .
  • the excitation light of the fourth polarization state is used as the excitation light source of the first wavelength conversion device 21 and the second wavelength conversion device 31 , and the excitation light of the fourth polarization state is regulated by the first polarization regulator 11 to emit light of the first polarization state.
  • the excitation light or the excitation light of the second polarization state further excites the first wavelength conversion device 21 or the second wavelength conversion device 31 to emit red light or green light.
  • the excitation light of the third polarization state is the same as the excitation light of the first polarization state
  • the excitation light of the fourth polarization state is the same as the excitation light of the second polarization state, that is, the third polarization state and the excitation light of the second polarization state are the same.
  • the polarization directions of the first polarization state are the same, and the polarization directions of the fourth polarization state and the second polarization state are the same; or the excitation light of the third polarization state and the excitation light of the second polarization state are the same, and the excitation light of the fourth polarization state and the third polarization state are the same.
  • the excitation light of one polarization state is the same, that is, the polarization directions of the third polarization state and the second polarization state are the same, and the polarization directions of the fourth polarization state and the first polarization state are the same.
  • the mirror 15 is disposed on the optical path of the excitation light of the third polarization state reflected by the polarization selector 14, and is used to change the propagation path of the excitation light of the third polarization state.
  • the second scattering device 16 is disposed on the optical path of the outgoing light of the reflecting mirror 15, and is used for scattering the excitation light of the third polarization state to obtain the third light.
  • a homogenizing device may be arranged on the optical path of the outgoing light of the second scattering device 16 to perform homogenizing treatment on the third light.
  • the first light source 10 uses a blue excitation light source, so that the third light is blue light.
  • the blue light emitted from the second scattering device 16 is transmitted to the second photo-splitting and combining member 42 to form a combined light after being processed with the first light and the second photo-combining member, that is, blue light, red light and green light are passed through the second photo-splitting and combining member 42
  • the combined light is formed and output to the next-level projection system to realize the full-color display of three primary colors.
  • the present application further provides a laser projection system 60 , please refer to FIG. 6 , which is a schematic structural diagram of an embodiment of the laser projection system of the present application.
  • the laser projection system 60 includes a light source device 61 , a main board 62 , a projection screen 63 and a power supply 64 .
  • the light source device 61 is the light source device 1 disclosed in the above embodiments, and details are not described herein again.
  • the power supply 64 is connected to the light source device 61 and the main board 62 , and is used for providing the light source device 61 and the main board 62 with a working voltage.
  • the main board 62 is connected to the light source device 61 for controlling the working state of the light source device 61 . Specifically, the main board 62 is used to control the working voltage of the light source device 61 , thereby controlling the light source device 61 to output different polarized lights.
  • the projection screen 63 is used to receive the polarized light modulated and output by the light source device 61, and perform imaging according to different polarized lights.
  • the light source device 1 of the present application adds a first polarization regulator 11 that regulates the polarization state of the excitation light, and the first polarization regulator 11 converts the excitation light emitted by the first light source 10 into excitation light of the first polarization state, and then excites the first wavelength.
  • the conversion device 21 emits the first light, or converts the excitation light emitted by the first light source 10 into excitation light of the second polarization state, and then excites the second wavelength conversion device 31 to emit the second light, which is paired by a single first polarization regulator 11 .
  • the first wavelength conversion device 21 and the second wavelength conversion device 31 perform excitation, which can improve work efficiency and reduce costs.
  • the first polarization regulator 11 only emits excitation light of one polarization state at a time, so that the first wavelength conversion device 21 receives all the excitation lights of the first polarization state emitted by the first polarization regulator 11, or the second wavelength conversion device 31 receives all the excitation light of the second polarization state emitted by the first polarization regulator 11, thereby realizing the full-load operation of the first wavelength conversion device 21 or the second wavelength conversion device 31, and effectively improving the first wavelength conversion device 21.
  • the brightness of a light or the second light emitted by the second wavelength conversion device 31 is a light that is transmitted from the first polarization regulator 11 .
  • the present application uses a fixed phosphor powder or a non-segmented rotating phosphor wheel as the first phosphor powder and the second phosphor powder, which reduces the precision requirements for the motor and avoids the size and cost of the motor of the traditional segmented color wheel. Limit and avoid high-speed motors at the same time, reduce system noise, improve the heat dissipation performance of phosphors, and reduce production costs.

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Abstract

一种光源装置（1）及激光投影***（60）。光源装置（1）包括：第一光源（10），出射激发光；第一偏振调控器（11），调控激发光的偏振态，出射第一偏振态或第二偏振态的激发光；第一匀光器（12），将第一偏振态或第二偏振态的激发光进行匀光处理；第一分光合光件（40），反射第一偏振态的激发光或者透射第二偏振态的激发光；第一波长转换装置（21），接收第一偏振态的激发光并出射第一光；第二波长转换装置（31），接收第二偏振态的激发光并出射第二光；其中，第一分光合光件（40）反射第二光或者透射第一光。通过单个第一偏振调控器（11）对第一波长转换装置（21）与第二波长转换装置（31）进行激发，能够提高工作效率以及降低成本，同时，有效提高第一光或第二光的亮度。

Description

光源装置及激光投影*** 技术领域
本申请涉及激光调制领域，特别是涉及一种光源装置及激光投影***。
背景技术
微投产品通常采用单片式空间光调制器的方案，利用时间积分原理的三基色显示形成全彩显示。RGB三色LED的光源方案在微投中应用广泛，即利用RGB依次反复进行开关的原理进行全彩色显示。但是由于单位面积的LED光学扩展量较大，因此在投影***中，由于光学扩展量的限制，导致LED微投的亮度受限，通常只能应用于低亮度的显示中。
激光荧光光源，可以利用其光学扩展量小的优势，实现更高亮度的显示，近年来也应用在微投***中。最常用的方法是采用蓝色激光激发分段荧光色轮的方法，依次产生RGB的照明光，通过时间积分实现全彩色。但是这种方案中，对色轮马达的转速精度要求极高，导致色轮的成本通常较高。并且由于色轮马达的尺寸限制，使得很难将光源部分的尺寸进一步减小，难以应用在对尺寸和便携性要求极高的微投产品中。
发明内容
为解决现有技术中的上述技术问题，本申请采用的一个技术方案：提供一种光源装置，该光源装置包括：
第一光源，用于出射激发光；
第一偏振调控器，设置于激发光的光路上，用于调控激发光的偏振态；
第一匀光器，设置于经第一偏振调控器调制的出射光的光路上，用于将第一偏振态的激发光或第二偏振态的激发光进行匀光处理；
第一分光合光件，设置于第一匀光器的出射光的光路上，用于反射第一偏振态的激发光或透射第二偏振态的激发光；
第一波长转换装置，设置于经第一分光合光件反射的第一偏振态的激发光的光路上，接收第一偏振态的激发光并波长转换出射第一光；
第二波长转换装置，设置于经第一分光合光件透射的第二偏振态的激发光的光路上，接收第二偏振态的激发光并波长转换出射第二光；
第一分光合光件接收第一波长转换装置和第二波长转换装置出射的第一光和第二光，并透射第一光和反射第二光。
可选地，第一波长转换装置为第一荧光粉，光源装置进一步包括第一透镜组件，第一透镜组件设置于经第一分光合光件反射的第一偏振态的激发光的光路上，用于将第一偏振态的激发光聚焦于第一荧光粉，以及用于收集第一荧光粉出射的第一光。
可选地，第二波长转换装置为第二荧光粉，光源装置进一步包括第二透镜组件，第二透镜组件设置于经第一分光合光件透射的第二偏振态的激发光的光路上，用于将第二偏振态的激发光聚焦于第二荧光粉，以及用于收集第二荧光粉出射的第二光。
可选地，第一偏振调控器出射第一偏振态的激发光和第二偏振态的激发光之间具有时间间隔；
光源装置进一步包括：
第二匀光器，设置于第一分光合光件的出射光的光路上，用于将第一光和第二光进行匀光处理；
激光器，用于在时间间隔内出射蓝色激光；
第一散射器件，设置于蓝色激光的光路上，用于将蓝色激光进行散射处理，以得到蓝光；
第三匀光器，设置于蓝光的光路上，用于将蓝光进行匀光处理；
第二分光合光件，设置于第二匀光器和第三匀光器的出射光的光路上，用于将匀光处理后的蓝光、第一光和第二光进行合光处理，以出射合成光。
可选地，第一偏振调控器出射第一偏振态的激发光和第二偏振态的 激发光之间具有时间间隔；
光源装置器进一步包括：
第二匀光器，设置于第一分光合光件的出射光的光路上，用于将第一光和第二光进行匀光处理；
第二光源，用于在时间间隔内出射蓝光；
第三匀光器，设置于蓝光的光路上，用于将蓝光进行匀光处理；
第二分光合光件，设置于第二匀光器和第三匀光器的出射光的光路上，用于将匀光处理后的蓝光、第一光和第二光进行合光处理，以出射合成光。
可选地，光源装置进一步包括：
第二偏振调控器，设置于激发光的光路上，用于调控激发光的偏振态，以出射第三偏振态的激发光或第四偏振态的激发光；
偏振选择器，设置于经第二偏振调控器调制的出射光的光路上，用于反射第三偏振态的激发光或者透射第四偏振态的激发光；
其中，第四偏振态的激发光作为第一波长转换装置与第二波长转换装置的激发光源，第四偏振态的激发光经第一偏振调控器调控，以出射第一偏振态的激发光或第二偏振态的激发光。
可选地，光源装置进一步包括：
第二匀光器，设置于第一分光合光件的出射光的光路上，用于将第一光和第二光进行匀光处理；
反射镜，设置于经偏振选择器反射的第三偏振态的激发光的光路上，用于改变第三偏振态的激发光的传播路径；
散射器件，设置于反射镜的出射光的光路上，用于将第三偏振态的激发光进行散射处理，以得到第三光；
第二分光合光件，设置于第三光的光路上，用于将匀光处理后的第一光、第二光和第三光进行合光处理，以出射合成光。
可选地，第一荧光粉与第二荧光粉至少包括固定式荧光粉和不分段式的转动荧光轮子中的一种。
为解决现有技术中的上述技术问题，本申请采用的另一个技术方 案：提供一种激光投影***，该激光投影***包括如上述的光源装置、电源、主板以及投影屏幕，电源连接光源装置和主板，主板连接光源装置，投影屏幕用于接收经光源装置调制的偏振光。
可选地，光源装置的发光器件包括荧光粉和发光光源，荧光粉至少包括固定式荧光粉和不分段式的转动荧光轮子中的一种。
本申请的有益效果是：区别于现有技术，本申请通过增设调控激发光偏振态的第一偏振调控器，第一偏振调控器将第一光源出射的激发光转换为第一偏振态的激发光，进而激发第一波长转换装置出射第一光，或将第一光源出射的激发光转换为第二偏振态的激发光，进而激发第二波长转换装置出射第二光，通过单个第一偏振调控器对第一波长转换装置和第二波长转换装置进行激发，能够提高工作效率以及降低成本。同时，第一偏振调控器一次只出射一种偏振态的激发光，使得第一波长转换装置接收第一偏振调控器出射的全部第一偏振态的激发光，或第二波长转换装置接收第一偏振调控器出射的全部第二偏振态的激发光，进而实现第一波长转换装置或第二波长转换装置的满负荷工作，有效提高第一波长转换装置出射的第一光或第二波长转换装置出射的第二光的亮度。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请光源装置第一实施例的结构示意图；
图2是本申请光源装置第二实施例的结构示意图；
图3是本申请第一偏振调控器与第一光源电源开关的对应关系图；
图4是本申请光源装置第三实施例的结构示意图；
图5是本申请光源装置第四实施例的结构示意图；
图6是本申请激光投影***一实施例的结构示意图。
具体实施方式
为使本领域的技术人员更好地理解本申请的技术方案，下面结合附图和具体实施方式对本申请所提供的光源装置及激光投影***做进一步详细描述。可以理解的是，所描述的实施例仅仅是本申请一部分实施例，而不是全部实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
请参阅图1，图1是本申请光源装置第一实施例的结构示意图。光源装置1包括第一光源10、第一偏振调控器11、第一匀光器12、第一波长转换装置21、第二波长转换装置31以及第一分光合光件40。
第一光源10用于出射激发光，激发光作为第一波长转换装置21与第二波长转换装置31的激发光源。可选地，第一光源10可为激光器或LED光源。具体地，激光器可为蓝色激光器或红色激光器等等，LED光源可为蓝色LED光源或UV-LED光源等。
第一偏振调控器11设置于激发光的光路上，用于调控激发光的偏振态，以出射第一偏振态的激发光或第二偏振态的激发光。其中，本实施例第一偏振调控器11为电控液晶板，通过改变电控液晶板的电压，进而改变液晶的偏转状态，以使激发光以不同偏振态通过电控液晶板。区别于普通的液晶显示面板，本实施例第一偏振调控器11只需要对液晶进行整体性偏转的调控，不需要独立的像素调控。因此电控液晶板的开口率高，透过率高，同时由于不需要起偏片和检偏片，也不会带来散热问题，并且能够提高电控液晶板的可靠性。
可选地，第一偏振态的激发光可为预设偏振方向的蓝色激光、蓝色LED光、UV光或其它颜色的激发光等等；第二偏振态的激发光可为与第一偏振态的激发光正交偏振的蓝色激光、蓝色LED光、UV光或其它颜色的激发光等等。
“偏振”是各种激光器的普遍性质，这是由激光形成的原理决定的。激光束是由激光器内发光介质粒子的受激辐射形成的。受激辐射有鲜明的特点：外来光子照射激光上能级粒子时，粒子辐射出一个光子并跃迁到下能级，受激辐射所产生的光子与外来光子具有相同的相位、相同的传播方向和相同的偏振状态。当激光器内受激辐射形成光子流时，一个模式光子流中的全部光子都具有相同的相位、相同的传播方向和相同的偏振状态。这意味着一个激光纵模(频率)一定是偏振的。同时，激光相邻纵模的偏振态或为平行或为垂直。激光器“正交偏振”是指激光器两个相邻的频率具有互相垂直的偏振状态。一对左右旋圆偏振的光也应看做正交偏振光。
可选地，在其他实施例中，第一偏振调控器11可为其它可调控偏振状态的器件。
第一匀光器12设置于第一偏振态的激发光的光路上，或设置于第二偏振态的激发光的光路上，用于将第一偏振态的激发光或第二偏振态的激发光进行匀光处理。可选地，本实施例第一匀光器12可为复眼透镜或方棒。本实施例根据第一匀光器12能够获得较高的光能利用率和大面积的均匀照明，提高第一光源10出射的激发光的均匀性。
第一分光合光件40设置于第一匀光器12的出射光的光路上，用于反射第一偏振态的激发光或者透射第二偏振态的激发光。第一分光合光件40上设置有偏振分光膜，对特定偏振方向的激发光进行反射，对与特定偏振方向的激发光正交偏振的激发光进行透射，即实现反射第一偏振态的激发光，透射第二偏振态的激发光。
第一波长转换装置21设置于经第一分光合光件40发射的第一偏振态的激发光的光路上，接收第一偏振态的激发光并进行波长转换，以出射第一光。
其中，第一波长转换装置21为第一荧光粉。可选地，第一荧光粉可为固定式荧光粉或不分段式的转动荧光轮子，具体可为红色荧光粉或纯红色荧光粉轮子，即第一波长转换装置21出射的第一光为红光。区别于分段式荧光轮，第一荧光粉对马达精度要求低，避免传统分段色轮的马达在尺寸和成本上的限制。其次，本实施例第一荧光粉不需要马达与其它元器件的同步控制，降低对马达转速精度的要求，同时避免马达高转速工作，降低***噪音、提高荧光粉的散热性能以及降低生产成本。
第二波长转换装置31设置于经第一分光合光件40透射的第二偏振态的激发光的光路上，接收第二偏振态的激发光并进行波长转换，以出射第二光。
其中，第二波长转换装置31为第二荧光粉。可选地，第二荧光粉可为固定式荧光粉或不分段式的转动荧光轮子，具体可为绿色荧光粉或纯绿色荧光粉轮子，即第二波长转换装置31出射的第二光为绿光。区别于分段式荧光轮，第二荧光粉对马达精度要求低，避免传统分段色轮的马达在尺寸和成本上的限制。其次，本实施例第二荧光粉不需要马达与其它元器件的同步控制，降低对马达转速精度的要求，同时避免马达高转速工作，降低***噪音、提高荧光粉的散热性能以及降低生产成本。
可选地，在其他实施例中第一荧光粉可为绿色荧光粉或纯绿色荧光粉轮子，第二荧光粉可为红色荧光粉或纯红色荧光粉轮子，即第一波长转换装置21出射的第一光可为绿光，第二波长转换装置31出射的第二光可为红光。
第一分光合光件40接收第一波长转换装置21和第二波长转换装置31出射的第一光和第二光，并透射第一光以及反射第二光。
进一步参阅图2，图2是本申请光源装置第二实施例的结构示意图。如图2所示，光源装置1进一步包括第一透镜组22和第二透镜组32。其中，第一透镜组件22设置于经第一分光合光件40反射的第一偏振态的激发光的光路上，第二透镜组件32设置于经第一分光合光件40透射的第二偏振态的激发光的光路上。
第一透镜组22进一步包括第一透镜221以及第二透镜222，第一透 镜221以及第二透镜222均为凸透镜，本实施例第一透镜组22通过双凸透镜的设置，将第一偏振态的激发光聚焦于第一荧光粉，以使第一荧光粉受激出射第一光；同时，第一透镜组22用于收集发散的第一光，并将第一光汇聚至第一分光合光件40。可选地，在其他实施例中，第一透镜组22可包括三个或三个以上的透镜，如三个、四个、五个等。
第二透镜组32进一步包括第三透镜321以及第四透镜322，第三透镜321以及第四透镜322均为凸透镜，本实施例第二透镜组32通过双凸透镜的设置，将第二偏振态的激发光汇聚至第二荧光粉处，以使第二荧光粉受激出射第二光；同时，第二透镜组32用于收集发散的第二光，并将第二光汇聚至第一分光合光件40。可选地，在其他实施例中，第二透镜组32可包括三个或三个以上的透镜，如三个、四个、五个等。
如图2所示，本实施例光源装置1进一步包括激光器52、第一散射器件53和第三匀光器51。激光器52用于出射蓝色激光，即激光器52为蓝色激光器。第一散射器件53设置于蓝色激光的光路上，用于将蓝色激光进行散射处理，以得到蓝光。可选地，第一散射器件53可为散射膜。第三匀光器51设置于蓝光的光路上，用于将蓝光进行匀光处理。
结合图2，进一步参阅图3，图3是本申请第一偏振调控器与第一光源电源开关的对应关系图。如图3所示，第一偏振调控器11设置有第一状态和第二状态。当第一偏振调控器11的工作电压为第一电压时，此时第一偏振调控器11为第一状态；当第一偏振调控器11的工作电压为第二电压时，此时第一偏振调控器11为第二状态。由于第一偏振调控器11为电控液晶板，液晶在电压变换时发生偏转，其中液晶由第一状态转化为第二状态时需要有一段偏转的时间，因此第一偏振调控器11在第一状态和第二状态之间进行切换存在时间间隔，即第一偏振调控器11出射第一偏振态的激发光和第二偏振态的激发光之间具有时间间隔。
由于液晶的偏转存在上升沿与下降沿的问题，第一偏振调控器11不能实现对第一光源10出射的激发光的偏振状态瞬时改变，因此在第一状态和第二状态进行切换的期间，关闭第一光源10，待第一偏振调控器11的液晶偏转稳定时，重新开启第一光源10。本实施例通过在液晶 偏转的过程中关闭第一光源10，待第一偏振调控器11的液晶偏转稳定后开启第一光源10，能够解决第一偏振调控器11不能对第一光源10出射的激发光的偏振状态瞬时改变而导致的颜色串扰的问题。
光学三基色包括红色、绿色以及蓝色，由这三基色按照不同比例和强弱混合，可以产生自然界的各种色彩变化。为实现投影***的图像显示，本申请设置第一波长转换装置21、第二波长转换装置31以及激光器52以出射红光、绿光以及蓝光。其中，本申请光源装置1的具体工作过程如下：
当第一偏振调控器11接收第一电压时，即第一偏振调控器11处于第一状态时，第一波长转换装置21接收第一偏振调控器11输出的第一偏振态的激发光并进行波长转换，以出射红光；此时，激光器52处于关闭的状态。
当第一偏振调控器11接收第二电压时，第一偏振调控器11包含的液晶由第一偏振态向第二偏振态转换，即第一偏振调控器11处于第一状态和第二状态之间的时间间隔时，关闭第一光源10并开启激光器52，激光器52输出的蓝色激光通过第一散射器件53出射蓝光。
当第一偏振调控器11包含的液晶偏转完成时，即第一偏振调控器11处于第二状态时，关闭激光器52并开启第一光源10，第二波长转换装置31接收第一偏振调控器11输出的第二偏振态的激发光并进行波长转换，以出射绿光。
本实施例通过在第一偏振调控器11激发第一波长转换装置21输出红光与第一偏振调控器11激发第二波长转换装置31输出绿光之间，使用激光器52和第一散射器件53出射蓝光，通过三基色的混合实现投影***的图像显示，同时将补充的蓝光夹杂在红光与绿光之间，为第一偏振调控器11提供调整时间，防止第一偏振调控器11无法对第一光源10出射的激发光的偏振状态瞬时改变而导致的颜色串扰。
如图2所示，本实施例光源装置1进一步包括第二匀光器41和第二分光合光件42。
第二匀光器41设置于第一分光合光件40的出射光的光路上，用于 将第一光和第二光进行匀光处理。
第二分光合光件42设置于第二匀光器41和第三匀光器51的出射光的光路上，用于将匀光处理后的蓝光、第一光和第二光进行合光处理，以出射合成光至下一级的投影***。
其中，本实施例第二分光合光件42为二向色片，二向色片根据波长进行选择，反射短波长的光以及透射长波长的光，即反射蓝光，透射红光与绿光。蓝光、红光与绿光经第二分光合光件42合光处理后形成合成光，输出至下一级的投影***，以实现三基色全彩显示。
进一步参阅图4，图4是本申请光源装置第三实施例的结构示意图。区别于第二实施例，本实施例光源装置1设置第二光源50，用于出射蓝光。其中，第二光源50为蓝光LED。本实施例通过设置第二光源50替代激光器52和第一散射器件53，能够降低生产成本。
其中，本实施例的具体工作原理与上述实施例相似，在此不再赘述。
进一步参阅图5，图5是本申请光源装置第四实施例的结构示意图。区别于第二实施例，本实施例光源装置1进一步包括第二偏振调控器13、偏振选择器14、反射镜15、第二散射器件16。
第二偏振调控器13设置于激发光的光路上，用于调控激发光的偏振态，以出射第三偏振态的激发光或第四偏振态的激发光。可选地，第二偏振调控器13为电控液晶板，通过改变电控液晶板的电压，进而改变液晶的偏转状态，以使激发光以不同偏振态通过电控液晶板。可选地，在其他实施例中，第二偏振调控器13可为其它可调控偏振状态的器件。
偏振选择器14设置于第三偏振态的激发光的光路上，或设置于第四偏振态的激发光的光路上，用于反射第三偏振态的激发光或者透射第四偏振态的激发光。
其中，第四偏振态的激发光作为第一波长转换装置21与第二波长转换装置31的激发光源，第四偏振态的激发光经第一偏振调控器11调控，以出射第一偏振态的激发光或第二偏振态的激发光，进而激发第一波长转换装置21或第二波长转换装置31出射红光或绿光。
需要说明的，在一实施方式中，第三偏振态的激发光和第一偏振态 的激发光相同，第四偏振态的激发光和第二偏振态的激发光相同，即第三偏振态和第一偏振态的偏振方向相同，第四偏振态和第二偏振态的偏振方向相同；或第三偏振态的激发光和第二偏振态的激发光相同，第四偏振态的激发光和第一偏振态的激发光相同，即第三偏振态和第二偏振态的偏振方向相同，第四偏振态和第一偏振态的偏振方向相同。
反射镜15设置于经偏振选择器14反射的第三偏振态的激发光的光路上，用于改变第三偏振态的激发光的传播路径。
第二散射器件16设置于反射镜15的出射光的光路上，用于将第三偏振态的激发光进行散射处理，以得到第三光。可选地，第二散射器件16的出射光的光路上可设置匀光器件，用于对第三光进行匀光处理。
为实现三基色全彩显示，第一光源10使用蓝色激发光源，以使第三光为蓝光。第二散射器件16出射的蓝光传输至第二分光合光件42处，与第一光和第二光合光处理后形成合成光，即蓝光、红光与绿光经第二分光合光件42合光处理后形成合成光，输出至下一级的投影***，以实现三基色全彩显示。
其中，本实施例的具体工作原理与上述实施例相似，在此不再赘述。
本申请进一步提供一种激光投影***60，参阅图6，图6是本申请激光投影***一实施例的结构示意图。如图6所示，激光投影***60包括光源装置61、主板62、投影屏幕63以及电源64。该光源装置61为上述实施例所揭示的光源装置1，在此不再赘述。
电源64连接光源装置61和主板62，用于为光源装置61和主板62提供工作电压。
主板62连接光源装置61，用于控制光源装置61的工作状态。具体地，主板62用于控制光源装置61的工作电压，进而控制光源装置61输出不同的偏振光。
投影屏幕63用于接收经光源装置61调制而输出的偏振光，并根据不同的偏振光进行成像。
本申请光源装置1通过增设调控激发光偏振态的第一偏振调控器11，第一偏振调控器11将第一光源10出射的激发光转换为第一偏振态 的激发光，进而激发第一波长转换装置21出射第一光，或将第一光源10出射的激发光转换为第二偏振态的激发光，进而激发第二波长转换装置31出射第二光，通过单个第一偏振调控器11对第一波长转换装置21和第二波长转换装置31进行激发，能够提高工作效率以及降低成本。同时，第一偏振调控器11一次只出射一种偏振态的激发光，使得第一波长转换装置21接收第一偏振调控器11出射的全部第一偏振态的激发光，或第二波长转换装置31接收第一偏振调控器11出射的全部第二偏振态的激发光，进而实现第一波长转换装置21或第二波长转换装置31的满负荷工作，有效提高第一波长转换装置21出射的第一光或第二波长转换装置31出射的第二光的亮度。此外，本申请使用固定式荧光粉或不分段式的转动荧光轮子作为第一荧光粉以及第二荧光粉，降低对马达的精度要求，避免传统分段色轮的马达在尺寸和成本上的限制，同时并且避免高转速马达，降低***噪音、提高荧光粉的散热性能以及降低生产成本。
以上仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请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，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种光源装置，其特征在于，包括：
    第一光源，用于出射激发光；
    第一偏振调控器，设置于所述激发光的光路上，用于调控所述激发光的偏振态；
    第一匀光器，设置于经所述第一偏振调控器调制的出射光的光路上，用于将第一偏振态的激发光或第二偏振态的激发光进行匀光处理；
    第一分光合光件，设置于所述第一匀光器的出射光的光路上，用于反射所述第一偏振态的激发光或透射所述第二偏振态的激发光；
    第一波长转换装置，设置于经所述第一分光合光件反射的第一偏振态的激发光的光路上，接收所述第一偏振态的激发光并波长转换出射第一光；
    第二波长转换装置，设置于经所述第一分光合光件透射的第二偏振态的激发光的光路上，接收所述第二偏振态的激发光并波长转换出射第二光；
    所述第一分光合光件接收所述第一波长转换装置和所述第二波长转换装置出射的所述第一光和所述第二光，并透射所述第一光和反射所述第二光。
  2. 根据权利要求1所述的光源装置，其特征在于，所述第一波长转换装置为第一荧光粉，所述光源装置进一步包括第一透镜组件，所述第一透镜组件设置于经所述第一分光合光件反射的第一偏振态的激发光的光路上，用于将所述第一偏振态的激发光聚焦于所述第一荧光粉，以及用于收集所述第一荧光粉出射的所述第一光。
  3. 根据权利要求2所述的光源装置，其特征在于，所述第二波长转换装置为第二荧光粉，所述光源装置进一步包括第二透镜组件，所述第二透镜组件设置于经所述第一分光合光件透射的第二偏振态的激发光的光路上，用于将所述第二偏振态的激发光聚焦于所述第二荧光粉，以及用于收集所述第二荧光粉出射的所述第二光。
  4. 根据权利要求3所述的光源装置，其特征在于，
    所述第一偏振调控器出射所述第一偏振态的激发光和所述第二偏振态的激发光之间具有时间间隔；
    所述光源装置进一步包括：
    第二匀光器，设置于所述第一分光合光件的出射光的光路上，用于将所述第一光和所述第二光进行匀光处理；
    激光器，用于在所述时间间隔内出射蓝色激光；
    第一散射器件，设置于所述蓝色激光的光路上，用于将所述蓝色激光进行散射处理，以得到蓝光；
    第三匀光器，设置于所述蓝光的光路上，用于将所述蓝光进行匀光处理；
    第二分光合光件，设置于所述第二匀光器和所述第三匀光器的出射光的光路上，用于将匀光处理后的所述蓝光、所述第一光和所述第二光进行合光处理，以出射合成光。
  5. 根据权利要求3所述的光源装置，其特征在于，
    所述第一偏振调控器出射所述第一偏振态的激发光和所述第二偏振态的激发光之间具有时间间隔；
    所述光源装置进一步包括：
    第二匀光器，设置于所述第一分光合光件的出射光的光路上，用于将所述第一光和所述第二光进行匀光处理；
    第二光源，用于在所述时间间隔内出射蓝光；
    第三匀光器，设置于所述蓝光的光路上，用于将所述蓝光进行匀光处理；
    第二分光合光件，设置于所述第二匀光器和所述第三匀光器的出射光的光路上，用于将匀光处理后的所述蓝光、所述第一光和所述第二光进行合光处理，以出射合成光。
  6. 根据权利要求3所述的光源装置，其特征在于，所述光源装置进一步包括：
    第二偏振调控器，设置于所述激发光的光路上，用于调控所述激发 光的偏振态，以出射第三偏振态的激发光或第四偏振态的激发光；
    偏振选择器，设置于经所述第二偏振调控器调制的出射光的光路上，用于反射所述第三偏振态的激发光或者透射所述第四偏振态的激发光；
    其中，所述第四偏振态的激发光作为所述第一波长转换装置与所述第二波长转换装置的激发光源，所述第四偏振态的激发光经所述第一偏振调控器调控，以出射所述第一偏振态的激发光或所述第二偏振态的激发光。
  7. 根据权利要求6所述的光源装置，其特征在于，所述光源装置进一步包括：
    第二匀光器，设置于所述第一分光合光件的出射光的光路上，用于将所述第一光和所述第二光进行匀光处理；
    反射镜，设置于经所述偏振选择器反射的第三偏振态的激发光的光路上，用于改变所述第三偏振态的激发光的传播路径；
    第二散射器件，设置于所述反射镜的出射光的光路上，用于将所述第三偏振态的激发光进行散射处理，以得到第三光；
    第二分光合光件，设置于所述第三光的光路上，用于将匀光处理后的所述第一光、所述第二光和所述第三光进行合光处理，以出射合成光。
  8. 根据权利要求1所述的光源装置，其特征在于，所述第一荧光粉与所述第二荧光粉至少包括固定式荧光粉和不分段式的转动荧光轮子中的一种。
  9. 一种激光投影***，其特征在于，所述激光投影***包括权利要求1-8任一项所述的光源装置、电源、主板以及投影屏幕，所述电源连接所述光源装置和所述主板，所述主板连接所述光源装置，所述投影屏幕用于接收经所述光源装置调制的偏振光。
  10. 根据权利要求9所述的激光投影***，其特征在于，所述光源装置的发光器件包括荧光粉和发光光源，所述荧光粉至少包括固定式荧光粉和不分段式的转动荧光轮子中的一种。
PCT/CN2021/116807 2020-09-17 2021-09-07 光源装置及激光投影*** WO2022057675A1 (zh)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008083661A (ja) * 2006-08-30 2008-04-10 Olympus Corp 照明装置およびそれを用いた画像投影装置
CN102854731A (zh) * 2012-07-24 2013-01-02 深圳市绎立锐光科技开发有限公司 发光装置及相关投影***
CN103261964A (zh) * 2010-12-08 2013-08-21 Nec显示器解决方案株式会社 照明光学***以及包括其的投影显示设备
JP2014142524A (ja) * 2013-01-25 2014-08-07 Panasonic Corp 光源装置および投写型映像表示装置
CN104603689A (zh) * 2012-09-10 2015-05-06 三菱电机株式会社 光源装置
CN204389864U (zh) * 2015-01-20 2015-06-10 深圳市绎立锐光科技开发有限公司 光源***和投影***
CN105222047A (zh) * 2014-06-13 2016-01-06 中强光电股份有限公司 照明装置
CN105319819A (zh) * 2014-07-28 2016-02-10 深圳市绎立锐光科技开发有限公司 发光装置及投影***
CN110471245A (zh) * 2018-05-10 2019-11-19 深圳光峰科技股份有限公司 光源***、投影设备及照明设备
CN110716380A (zh) * 2019-11-25 2020-01-21 成都极米科技股份有限公司 一种光源***及投影机

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008083661A (ja) * 2006-08-30 2008-04-10 Olympus Corp 照明装置およびそれを用いた画像投影装置
CN103261964A (zh) * 2010-12-08 2013-08-21 Nec显示器解决方案株式会社 照明光学***以及包括其的投影显示设备
CN102854731A (zh) * 2012-07-24 2013-01-02 深圳市绎立锐光科技开发有限公司 发光装置及相关投影***
CN104603689A (zh) * 2012-09-10 2015-05-06 三菱电机株式会社 光源装置
JP2014142524A (ja) * 2013-01-25 2014-08-07 Panasonic Corp 光源装置および投写型映像表示装置
CN105222047A (zh) * 2014-06-13 2016-01-06 中强光电股份有限公司 照明装置
CN105319819A (zh) * 2014-07-28 2016-02-10 深圳市绎立锐光科技开发有限公司 发光装置及投影***
CN204389864U (zh) * 2015-01-20 2015-06-10 深圳市绎立锐光科技开发有限公司 光源***和投影***
CN110471245A (zh) * 2018-05-10 2019-11-19 深圳光峰科技股份有限公司 光源***、投影设备及照明设备
CN110716380A (zh) * 2019-11-25 2020-01-21 成都极米科技股份有限公司 一种光源***及投影机

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