WO2023005673A1 - Laser light source system and laser projection apparatus - Google Patents

Laser light source system and laser projection apparatus Download PDF

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Publication number
WO2023005673A1
WO2023005673A1 PCT/CN2022/105594 CN2022105594W WO2023005673A1 WO 2023005673 A1 WO2023005673 A1 WO 2023005673A1 CN 2022105594 W CN2022105594 W CN 2022105594W WO 2023005673 A1 WO2023005673 A1 WO 2023005673A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
blue
laser
wavelength conversion
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PCT/CN2022/105594
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French (fr)
Chinese (zh)
Inventor
陈红运
严双涛
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深圳光峰科技股份有限公司
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Publication of WO2023005673A1 publication Critical patent/WO2023005673A1/en

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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
    • G03B21/2006—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
    • G03B21/2073—Polarisers in the lamp house
    • 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 invention relates to the technical field of laser projection, in particular to a laser light source system and laser projection equipment.
  • Laser is a light source with high brightness, strong directionality and monochromatic coherent beam.
  • laser light source has the advantages of good monochromaticity, strong directionality and high luminous flux.
  • red, green, and blue laser light sources are generally used for color mixing to obtain white light output, but this solution has the disadvantages of complex structure, high cost, and low light extraction efficiency.
  • Embodiments of the present invention provide a laser light source system and laser projection equipment to solve the technical problems that the laser light source system and laser projection equipment have complex structures, high costs, and low light extraction efficiency.
  • the present invention provides a laser light source system, including: a first excitation light source, a second light source, a first homogenizing element, a second homogenizing element, a wavelength conversion device, and a light splitting and combining device;
  • the first excitation light source emits a first blue light
  • the second light source emits a second blue light
  • the first homogenizing element is disposed between the first exciting light source and the light splitting and combining device, and the second homogenizing element is disposed between the second light source and the splitting and combining device;
  • the wavelength conversion device includes a fluorescent layer and a substrate with a reflective surface, the fluorescent layer is arranged on the reflective surface of the substrate, or the wavelength conversion device includes a fluorescent layer, a substrate, and a reflective layer, and the reflective layer is located on the reflective surface of the substrate. between the substrate and the fluorescent layer;
  • the light splitting and combining device reflects the first blue light emitted by the first excitation light source to the fluorescent layer, and the fluorescent layer receives the first blue light emitted by the first excitation light source, and performs wavelength conversion to obtain a yellow stimulated light.
  • Excitation light
  • the photosynthetic device transmits the yellow stimulated light and reflects the second blue light, and outputs the yellow stimulated light and the second blue photosynthetic light.
  • the present invention provides another laser light source system, including: a first excitation light source, a second light source, a first homogenizing element, a second homogenizing element, a wavelength conversion device, and a light splitting and combining device;
  • the first excitation light source emits a first blue light
  • the second light source emits a second blue light
  • the first homogenizing element is disposed between the first exciting light source and the light splitting and combining device, and the second homogenizing element is disposed between the second light source and the splitting and combining device;
  • the wavelength conversion device includes a fluorescent layer and a substrate with a reflective surface, the fluorescent layer is arranged on the reflective surface of the substrate, or the wavelength conversion device includes a fluorescent layer, a substrate, and a reflective layer, and the reflective layer is located on the reflective surface of the substrate. between the substrate and the fluorescent layer;
  • the light splitting and combining device transmits the first blue light emitted by the first exciting light source to the fluorescent layer, and the fluorescent layer receives the first blue light emitted by the first exciting light source, and performs wavelength conversion to obtain a yellow colored light.
  • Excitation light ;
  • the photosynthetic device reflects the yellow excited light and transmits the second blue light, and outputs the yellow excited light and the second blue photosynthetic light.
  • the thickness of the fluorescent layer is less than or equal to 0.3 mm.
  • the laser light source system further includes a first scattering element, the first scattering element is arranged between the first excitation light source and the first uniform light element, and the first scattering element It is used for scattering and homogenizing the first blue light emitted by the first excitation light source.
  • the laser light source system further includes a second scattering element, the second scattering element is arranged between the second light source and the second uniform light element, and the second scattering element uses Scattering and homogenizing the second blue light emitted by the second light source.
  • the laser light source system further includes a first reflector and a first lens group, and the first reflector and the first lens group are sequentially arranged between the first excitation light source and the Between light-splitting and synthesizing devices.
  • the laser light source system further includes a second reflector and a second lens group, and the second reflector and the second lens group are sequentially arranged between the second light source and the branch. between photosynthetic light apparatus.
  • the first excitation light source includes a first blue laser array, a second blue laser array, and a polarization combining element; the planes where the first blue laser array and the second blue laser array are located are perpendicular to each other, The polarization combining element is located between the first blue laser array and the second blue laser array, and the polarization combining element intersects the plane where the first blue laser array and the second blue laser array are located; the first The polarization states of the light emitted by the blue light exciter array and the light emitted by the second blue light exciter array are different, and the polarization combining element combines the light emitted by the first blue light laser array and the light emitted by the second blue laser array output, to obtain the first blue light.
  • the laser light source system further includes a third lens group, and the third lens group is arranged between the light splitting and combining device and the wavelength conversion device.
  • the wavelength conversion device is arranged in a closed casing, and the casing is provided with a light opening, and the third lens group is arranged at the light opening of the casing.
  • the wavelength conversion devices are arranged on the optical path of the first blue light and are movable relative to each other.
  • the present invention also provides a laser projection device, including a light machine, a lens, and the above-mentioned laser light source system, the laser light source system is used to provide light beams for the light machine, and the light machine is used to control the light source The light beam is modulated and output to the lens, and the lens is used for imaging and projecting to the projection medium to form a projection picture.
  • a laser projection device including a light machine, a lens, and the above-mentioned laser light source system
  • the laser light source system is used to provide light beams for the light machine
  • the light machine is used to control the light source
  • the light beam is modulated and output to the lens
  • the lens is used for imaging and projecting to the projection medium to form a projection picture.
  • the present invention has at least the following beneficial effects: the first blue light emitted by the first excitation light source passes through the wavelength conversion device to generate yellow excited light, and the yellow excited light is combined with the second light emitted by the second light source.
  • the blue photosynthetic light and then forms the white light output, which has the advantages of simple overall structure, low cost and high light extraction efficiency; the first blue light is scattered and homogenized by the first scattering element, and the second light is diffused by the second scattering element.
  • Scattering and homogenizing the blue light can effectively reduce the speckle phenomenon of the output white light; by setting the first reflector, the first lens group, the second reflector, the second lens group and the third lens group, it is beneficial to Save the space occupied by the entire laser light source system, reduce the size of the light splitting and combining device, and reduce the size of the wavelength converting device; by setting the first blue laser array, the second blue laser array and the polarization combining element, it can reduce The space occupied by the first excitation light source and the first blue light with high brightness are obtained; by arranging the wavelength conversion device in the closed casing, the dustproof effect of the wavelength conversion device can be improved, which is beneficial to prolong the service life of the wavelength conversion device.
  • high-purity yellow excited light can be obtained; by moving the wavelength conversion device and the first blue light relative to each other, the heat dissipation effect of the wavelength conversion device can be improved, and the service life of the wavelength conversion device can be further improved; By setting the lighting time of the first excitation light source and the second light source, multiple colors of light can be emitted simultaneously in the same cycle, increasing the light output per unit time, or obtaining continuous white light output.
  • Fig. 1 is a schematic structural view of a laser light source system in an embodiment of the present invention
  • Fig. 2 is the structural representation of another kind of laser light source system in the embodiment of the present invention.
  • FIG. 3 is a first structural schematic diagram of a wavelength conversion device in an embodiment of the present invention.
  • FIG. 4 is a second structural schematic diagram of a wavelength conversion device in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a housing, a wavelength conversion device and a third lens group in an embodiment of the present invention
  • Fig. 6 is a first timing diagram of the first excitation light source and the second light source being turned on in the same period in the embodiment of the present invention
  • Fig. 7 is a second time sequence diagram in which the first excitation light source and the second light source are turned on in the same period in the embodiment of the present invention.
  • Fig. 8 is a third time sequence diagram in which the first excitation light source and the second light source are turned on in the same period in the embodiment of the present invention.
  • connection should be interpreted in a broad sense unless otherwise clearly specified or limited.
  • it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components.
  • Communication can also be only surface contact, or surface contact connection through an intermediary.
  • the term “plurality” of the present invention means greater than or equal to two.
  • the terms “first”, “second” and so on are only used for distinguishing descriptions, and should not be interpreted as specific designations or special structures.
  • the description of the terms “some embodiments”, “other embodiments” and the like mean that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention.
  • the schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
  • those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in the present invention without conflicting with each other.
  • the laser light source system includes a first excitation light source 1, a second light source 2, a first uniform light element 31, a second light uniform element 32, and a wavelength conversion device. 4 and light splitting and combining device 5.
  • the first excitation light source 1 is used to emit a first blue light 11
  • the second light source 2 is used to emit a second blue light 21 .
  • the first excitation light source 1 is a laser light source
  • the second light source 2 can be a laser light source, or other light sources such as an LED light source;
  • the wavelength of the first blue light 11 can be the same as that of the second blue light 21, or can be different. Same.
  • the first homogenizing element 31 is arranged between the first exciting light source 1 and the light splitting and combining device 5
  • the second homogenizing element 32 is arranged between the second light source 2 and the light splitting and combining device 5 .
  • the first dodging element 31 is used for dodging the first blue light 11 emitted by the first exciting light source 1
  • the second dodging element 32 is used for dodging the second blue light 21 emitted by the second light source 2 ;
  • the first blue light 11 and the second blue light 21 after uniform light treatment respectively can obtain higher light energy utilization efficiency and more uniform illuminance.
  • the first dodging element 31 may be a dodging rod or a fly-eye lens
  • the second dodging element 32 may be a dodging rod or a fly-eye lens.
  • the wavelength conversion device 4 includes a fluorescent layer 41 and a substrate 42 with a reflective surface 421, and the fluorescent layer 41 is arranged on the reflective surface 421 of the substrate 42; that is, the substrate 42 itself has a reflective function, the wavelength converting device 4 includes a fluorescent layer 41 and a reflective substrate 42 with a two-layer structure.
  • the wavelength conversion device 4 includes a fluorescent layer 41, a substrate 42, and a reflective layer 43, and the reflective layer 43 is located between the substrate 42 and the fluorescent layer 41; that is, the substrate 42 itself does not have The reflective function plays the role of carrying the reflective layer 43 and the fluorescent layer 41 .
  • the wavelength conversion device 4 includes a three-layer structure of the fluorescent layer 41 , the substrate 42 and the reflective layer 43 .
  • the light splitting and combining device 5 has characteristics of reflecting blue light and transmitting yellow light.
  • the light splitting and combining device 5 may be a dichroic film, which has the characteristics of reflecting light in a part of the wavelength band and transmitting light in another part of the wave band, so as to achieve the purpose of reflecting blue light and transmitting yellow light.
  • the light splitting and combining device 5 reflects the first blue light 11 to the fluorescent layer 41 of the wavelength converting device 4, and the fluorescent layer 41 of the wavelength converting device 4 receives the first blue light 11, and Perform wavelength conversion on the first blue light 11 to obtain yellow stimulated light 44; the reflective surface 421 of the substrate 42 or the reflective layer 43 of the wavelength conversion device 4 reflects the yellow stimulated light 44, so that the yellow stimulated light 44 is emitted to the beam splitting light device 5.
  • the light splitting and combining device 5 transmits the yellow stimulated light 44 and reflects the second blue light 21, and the second blue light 21 reflected by the light splitting and combining device 5 combines with the yellow excited light 44 transmitted by the splitting and combining device 5 output.
  • the light splitting and combining device 5 has a first surface and a second surface that are arranged oppositely.
  • the first blue light 11 hits the first surface of the light-splitting and combining device 5, reflects on the first surface of the light-splitting and combining device 5 and goes to the fluorescent layer 41 of the wavelength conversion device 4, generates yellow stimulated light 44 and passes through the substrate
  • the reflective surface 421 of 42 or the reflective layer 43 of the wavelength conversion device 4 is directed to the light-splitting and combining device 5, and the yellow stimulated light 44 can be transmitted through the first surface and the second surface of the light-splitting and combining device 5, and the yellow stimulated light 44 is transmitted from
  • the light is emitted from the second surface of the light splitting and combining device 5 .
  • the second blue light 21 shoots to the second surface of the light-splitting and combining device 5, and is reflected on the second surface of the light-splitting and combining device 5. 5.
  • the transmitted yellow stimulated light 44 is combined and output to obtain white light.
  • the embodiment of the present invention also provides another laser light source system. As shown in FIG. Conversion device 4 and light splitting and combining device 5 .
  • the first excitation light source 1 is used to emit a first blue light 11
  • the second light source 2 is used to emit a second blue light 21 .
  • the first excitation light source 1 is a laser light source
  • the second light source 2 can be a laser light source, or other light sources such as an LED light source;
  • the wavelength of the first blue light 11 can be the same as that of the second blue light 21, or can be different. Same.
  • the first homogenizing element 31 is arranged between the first exciting light source 1 and the light splitting and combining device 5
  • the second homogenizing element 32 is arranged between the second light source 2 and the light splitting and combining device 5 .
  • the first dodging element 31 is used for dodging the first blue light 11 emitted by the first exciting light source 1
  • the second dodging element 32 is used for dodging the second blue light 21 emitted by the second light source 2 ;
  • the first blue light 11 and the second blue light 21 after uniform light treatment respectively can obtain higher light energy utilization efficiency and more uniform illuminance.
  • the first dodging element 31 may be a dodging rod or a fly-eye lens
  • the second dodging element 32 may be a dodging rod or a fly-eye lens.
  • the wavelength conversion device 4 includes a fluorescent layer 41 and a substrate 42 with a reflective surface 421, and the fluorescent layer 41 is arranged on the reflective surface 421 of the substrate 42; that is, the substrate 42 itself has a reflective function, the wavelength converting device 4 includes a fluorescent layer 41 and a reflective substrate 42 with a two-layer structure.
  • the wavelength conversion device 4 includes a fluorescent layer 41, a substrate 42, and a reflective layer 43, and the reflective layer 43 is located between the substrate 42 and the fluorescent layer 41; that is, the substrate 42 itself does not have The reflective function plays the role of carrying the reflective layer 43 and the fluorescent layer 41 .
  • the wavelength conversion device 4 includes a three-layer structure of the fluorescent layer 41 , the substrate 42 and the reflective layer 43 .
  • the light splitting and combining device 5 has the characteristics of transmitting blue light and reflecting yellow light.
  • the light splitting and combining device 5 may be a dichroic film, which has the characteristics of reflecting light in a part of the wavelength band and transmitting light in another part of the wave band, so as to achieve the purpose of transmitting blue light and reflecting yellow light.
  • the light splitting and combining device 5 transmits the first blue light 11 to the fluorescent layer 41 of the wavelength converting device 4, and the fluorescent layer 41 of the wavelength converting device 4 receives the first blue light 11, and Perform wavelength conversion on the first blue light 11 to obtain yellow stimulated light 44; the reflective surface 421 of the substrate 42 or the reflective layer 43 of the wavelength conversion device 4 reflects the yellow stimulated light 44, so that the yellow stimulated light 44 is emitted to the beam splitting light device 5.
  • the light-splitting and combining device 5 reflects the yellow excited light 44 and transmits the second blue light 21, and the second blue light 21 transmitted through the light-splitting and combining device 5 is combined with the yellow excited light 44 reflected by the light-splitting and combining device 5 output.
  • the light splitting and combining device 5 has a first surface and a second surface oppositely arranged. In FIG. surface.
  • the first blue light 11 is incident on the second surface of the light splitting and combining device 5, and is transmitted to the fluorescent layer 41 of the wavelength conversion device 4 after being transmitted through the second surface and the first surface of the splitting and combining device 5, generating yellow stimulated light 44 and pass through the reflective surface 421 of the substrate 42 or the reflective layer 43 of the wavelength conversion device 4 to the light-splitting and combining device 5, and the yellow stimulated light 44 is reflected on the first surface of the light-splitting and combining device 5 and emitted.
  • the second blue light 21 shoots to the second surface of the light-splitting and combining device 5, and after being transmitted through the second surface and the first surface of the light-splitting and combining device 5, and the yellow stimulated light 44 reflected by the light-splitting and combining device 5 Combined light output to obtain white light.
  • the thickness of the fluorescent layer 41 is less than or equal to 0.4mm, or less than or equal to 0.3mm, or less than or equal to 0.15mm; in a more preferred embodiment, the thickness of the fluorescent layer The thickness of 41 is less than or equal to 0.3mm.
  • the thickness of the fluorescent layer 41 is less than or equal to 0.3 mm, it can ensure that the fluorescent powder in the fluorescent layer 41 is fully excited to emit yellow excited 44 light and reflect it back to the outgoing light path, and at the same time, it can reduce the heat loss in the fluorescent layer 41. enrichment, improve the excitation efficiency of the fluorescent layer 41 and ensure the service life of the fluorescent layer 41.
  • the laser light source system further includes a first scattering element 61, and the first scattering element 61 is arranged between the first excitation light source 1 and the first uniform light element 31 , the first scattering element 61 is used for scattering and homogenizing the first blue light 11 emitted by the first exciting light source 1 .
  • the scattered and homogenized first blue light 11 passes through the first homogenization element 31 for further homogenization.
  • the first blue light 11 after the scattering and homogenization treatment is less prone to interference phenomenon, thereby reducing the speckle phenomenon of the output white light.
  • the first scattering element 61 may be a scattering sheet.
  • the laser light source system further includes a second scattering element 62, and the second scattering element 62 is arranged between the second light source 2 and the second uniform light element 32,
  • the second scattering element 62 is used for scattering and homogenizing the second blue light 21 emitted by the second light source 2 .
  • the second blue light 21 that has been diffused and homogenized passes through the second homogenization element 32 for further homogenization.
  • the second blue light 21 after the scattering and homogenization treatment is less prone to interference phenomenon, thereby reducing the speckle phenomenon of the output white light.
  • the second scattering element 62 may be a scattering sheet.
  • the laser light source system further includes a first reflector 71 and a first lens group 72, and the first reflector 71 and the first lens group 72 are sequentially arranged at the first excitation Between the light source 1 and the light splitting and combining device 5 .
  • the first blue light 11 can change the direction of the optical path through the first reflector 71, which is beneficial to save the space occupied by the entire laser light source system;
  • the volume size of the photosynthetic light device 5 is a first reflector 71 and a first lens group 72, and the first reflector 71 and the first lens group 72 are sequentially arranged at the first excitation Between the light source 1 and the light splitting and combining device 5 .
  • the first blue light 11 can change the direction of the optical path through the first reflector 71, which is beneficial to save the space occupied by the entire laser light source system;
  • the volume size of the photosynthetic light device 5 is beneficial to save the space occupied by the entire laser light source system.
  • the laser light source system further includes a second reflector 73 and a second lens group 74, and the second reflector 73 and the second lens group 74 are sequentially arranged on Between the second light source 2 and the light splitting and combining device 5 .
  • the second blue light 21 can change the direction of the optical path through the second reflector 73, which is beneficial to save the space occupied by the entire laser light source system;
  • the volume size of the photosynthetic light device 6 is arranged.
  • the first excitation light source 1 includes a first blue laser array 12 , a second blue laser array 13 and a polarization combining element 14 .
  • the planes where the first blue laser array 12 and the second blue laser array 13 are located are perpendicular to each other, and the polarization combining element 14 is located between the first blue laser array 12 and the second blue laser array 13, and the polarization combining element 14 is connected to the first blue laser array.
  • the planes where the laser array 12 and the second blue laser array 13 are located intersect.
  • the polarization states of the light emitted by the first blue light exciter array 12 and the light emitted by the second blue light exciter array 13 are different, and the polarization combination element 14 emits the light emitted by the first blue light laser array 12 and the light emitted by the second blue laser array 13. The light is combined and output to obtain the first blue light 11 .
  • the first blue laser array 12 is provided with 16 blue lasers arranged in a rectangular array
  • the second blue laser 13 is provided with 16 blue lasers arranged in a rectangular array
  • the blue lasers, the first blue laser array 12 and the second blue laser array 13 arranged perpendicular to each other can obviously make more reasonable use of space and reduce the space occupied by the first excitation light source 1 .
  • the first blue laser array 12 can emit P polarized blue light 121
  • the second blue laser array 13 can emit S polarized blue light 131
  • the polarization combining element 14 can transmit P polarized blue light 121 and reflect S polarized blue light 131
  • the P polarized blue light 121 and S-polarized blue light 131 output the first blue light 11 after the polarization combining element 14 performs polarization combination; Combining the light, the first blue light 11 with high brightness can be obtained.
  • the laser light source system further includes a third lens group 75 , and the third lens group 75 is arranged between the light splitting and combining device 5 and the wavelength conversion device 4 .
  • the first blue light 11 reflected by the light splitting and combining device 5 can be converged and shrunk through the third lens group 75, which is conducive to reducing the volume of the wavelength conversion device 4, or reducing the material of the fluorescent layer 41 of the wavelength conversion device 4 .
  • the wavelength conversion device 4 is arranged in a closed casing 8, the casing 8 is provided with a light opening 81, and the third lens group 75 is set on the light opening 81 of the housing 8 .
  • the dust-proof effect of the wavelength conversion device 4 can be improved, which is beneficial to prolong the service life of the wavelength conversion device 4; and the interference and interference of external light to the wavelength conversion device 4 can also be reduced. effect to obtain high-purity yellow stimulated light 44 .
  • the wavelength conversion device 4 is arranged on the optical path of the first blue light 11 and is movable relative to each other, which is beneficial to improve the heat dissipation effect of the wavelength conversion device 4 , further improving the service life of the wavelength converting device 4 .
  • the relative movement of the wavelength conversion device 4 and the first blue light 11 may be circular rotation or reciprocating linear motion.
  • the lighting time periods of the first excitation light source 1 and the second light source 2 overlap.
  • the first excitation light source 1 is between 0 and extinguished during the period of time, in the to lights up during the period of extinguished during the time period from t to t 1 ; extinguished during the period of time, in the to light during the time period of t 1 ; then, the first excitation light source 1 and the second light source 2 are in to The time periods are all on, that is, the lighting time periods of the first excitation light source 1 and the second light source 2 are to Coincident; at this time, the laser light source system is between 0 and extinguished during the period of time, in the to Blu-ray output during the period of time, in the to output white light during the period of time, in Yellow light is output during the period from t1 to t1 .
  • the first exciting light source is turned on for the whole period, and the second light source is turned on for a part of the period or the whole period.
  • the first exciting light source 1 is lit during the time period from 0 to t2; the second light source 2 is lit during the period from 0 to extinguished during the period of time, in the Light up during the period from t 1 to t 1 ; at this time, the laser light source system is Output yellow light during the period of time, in White light is output during the time period up to t1 .
  • the first excitation light source 1 By setting the first excitation light source 1 to light up the whole period in the same period, and the second light source 2 to light up part of the period in the same period, multicolor light can be emitted simultaneously in the same period, and the light output per unit time can be increased.
  • the first excitation light source 1 is lit during the time period from 0 to t3 ;
  • the second light source 2 is lit during the time period from 0 to t3 ;
  • the laser light source system outputs white light during the time period from 0 to t3 .
  • An embodiment of the present invention also provides a laser projection device, which includes an optical machine, a lens, and the aforementioned laser light source system.
  • the laser light source system is used to provide the light source beam for the light machine, the light machine is used to modulate the light source beam and output it to the lens, and the lens is used for imaging and projecting it to the projection medium to form a projection picture.
  • the first blue light 11 emitted by the first excitation light source 1 passes through the wavelength conversion device 5 to generate yellow stimulated light 51, and the yellow stimulated light 51 combines with the second blue light 21 emitted by the second light source 2 to form white light output.
  • the embodiment of the present invention can obtain white light output only by using two sets of blue excitation light sources, and because the blue excitation light source is compared to Red and green excitation light sources have lower cost and higher electro-optical conversion efficiency, so they have the advantages of simple overall structure, lower cost and high light extraction efficiency.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

The present invention provides a laser light source system and a laser projection apparatus, comprising a first excitation light source, a second light source, a first light homogenizing element, a second light homogenizing element, a wavelength conversion device, and a light splitting and combining device. The light splitting and combining device reflects first blue light to a fluorescent layer which performs wavelength conversion to obtain yellow excited light; the light splitting and combining device transmits the yellow excited light, reflects second blue light, combines the yellow excited light and the second blue light, and outputs combined light. In the present invention, the first blue light emitted by the first excitation light source passes through the wavelength conversion device to generate the yellow excited light, and the yellow excited light and the second blue light emitted by the second light source are combined to form white light to be outputted; the apparatus has the advantages of being simple in overall structure, lower in cost, high in light emitting efficiency and the like.

Description

激光光源***和激光投影设备Laser light source system and laser projection equipment 技术领域technical field
本发明涉及激光投影技术领域，具体而言，涉及一种激光光源***和激光投影设备。The invention relates to the technical field of laser projection, in particular to a laser light source system and laser projection equipment.
背景技术Background technique
激光是一种高亮度，方向性强，发出单色相干光束的光源，激光光源作为一种优良的相干光源，具有单色性好，方向性强，光通量高等优点。在激光投影技术领域，一般使用红、绿、蓝三种颜色的激光光源进行混色，得到白光输出，但是这种方案具有结构复杂、成本昂贵、而且出光效率低等缺点。Laser is a light source with high brightness, strong directionality and monochromatic coherent beam. As an excellent coherent light source, laser light source has the advantages of good monochromaticity, strong directionality and high luminous flux. In the field of laser projection technology, red, green, and blue laser light sources are generally used for color mixing to obtain white light output, but this solution has the disadvantages of complex structure, high cost, and low light extraction efficiency.
发明内容Contents of the invention
本发明实施例提供一种激光光源***和激光投影设备，以解决激光光源***和激光投影设备结构复杂、成本昂贵、而且出光效率低的技术问题。Embodiments of the present invention provide a laser light source system and laser projection equipment to solve the technical problems that the laser light source system and laser projection equipment have complex structures, high costs, and low light extraction efficiency.
为解决上述技术问题，本发明提供一种激光光源***，包括：第一激发光源、第二光源、第一匀光元件、第二匀光元件、波长转换装置和分光合光装置；In order to solve the above-mentioned technical problems, the present invention provides a laser light source system, including: a first excitation light source, a second light source, a first homogenizing element, a second homogenizing element, a wavelength conversion device, and a light splitting and combining device;
所述第一激发光源发出第一蓝色光，所述第二光源发出第二蓝色光；The first excitation light source emits a first blue light, and the second light source emits a second blue light;
所述第一匀光元件设置在所述第一激发光源和所述分光合光装置之间，所述第二匀光元件设置在所述第二光源和所述分光合光装置之间；The first homogenizing element is disposed between the first exciting light source and the light splitting and combining device, and the second homogenizing element is disposed between the second light source and the splitting and combining device;
所述波长转换装置包括荧光层和具有反射面的基板，所述荧光层设置在所述基板的反射面，或者，所述波长转换装置包括荧光层、基板和反射层，所述反射 层位于所述基板和荧光层之间；The wavelength conversion device includes a fluorescent layer and a substrate with a reflective surface, the fluorescent layer is arranged on the reflective surface of the substrate, or the wavelength conversion device includes a fluorescent layer, a substrate, and a reflective layer, and the reflective layer is located on the reflective surface of the substrate. between the substrate and the fluorescent layer;
所述分光合光装置反射所述第一激发光源发出的第一蓝色光至所述荧光层，所述荧光层接收所述第一激发光源发出的第一蓝色光，并进行波长转换得到黄色受激发光；The light splitting and combining device reflects the first blue light emitted by the first excitation light source to the fluorescent layer, and the fluorescent layer receives the first blue light emitted by the first excitation light source, and performs wavelength conversion to obtain a yellow stimulated light. Excitation light;
所述分光合光装置透射所述黄色受激发光并反射所述第二蓝色光，将黄色受激发光和第二蓝色光合光后输出。The photosynthetic device transmits the yellow stimulated light and reflects the second blue light, and outputs the yellow stimulated light and the second blue photosynthetic light.
本发明提供另一种激光光源***，包括：第一激发光源、第二光源、第一匀光元件、第二匀光元件、波长转换装置和分光合光装置；The present invention provides another laser light source system, including: a first excitation light source, a second light source, a first homogenizing element, a second homogenizing element, a wavelength conversion device, and a light splitting and combining device;
所述第一激发光源发出第一蓝色光，所述第二光源发出第二蓝色光；The first excitation light source emits a first blue light, and the second light source emits a second blue light;
所述第一匀光元件设置在所述第一激发光源和所述分光合光装置之间，所述第二匀光元件设置在所述第二光源和所述分光合光装置之间；The first homogenizing element is disposed between the first exciting light source and the light splitting and combining device, and the second homogenizing element is disposed between the second light source and the splitting and combining device;
所述波长转换装置包括荧光层和具有反射面的基板，所述荧光层设置在所述基板的反射面，或者，所述波长转换装置包括荧光层、基板和反射层，所述反射层位于所述基板和荧光层之间；The wavelength conversion device includes a fluorescent layer and a substrate with a reflective surface, the fluorescent layer is arranged on the reflective surface of the substrate, or the wavelength conversion device includes a fluorescent layer, a substrate, and a reflective layer, and the reflective layer is located on the reflective surface of the substrate. between the substrate and the fluorescent layer;
所述分光合光装置透射所述第一激发光源发出的第一蓝色光至所述荧光层，所述荧光层接收所述第一激发光源发出的第一蓝色光，并进行波长转换得到黄色受激发光；The light splitting and combining device transmits the first blue light emitted by the first exciting light source to the fluorescent layer, and the fluorescent layer receives the first blue light emitted by the first exciting light source, and performs wavelength conversion to obtain a yellow colored light. Excitation light;
所述分光合光装置反射所述黄色受激发光并透射所述第二蓝色光，将黄色受激发光和第二蓝色光合光后输出。The photosynthetic device reflects the yellow excited light and transmits the second blue light, and outputs the yellow excited light and the second blue photosynthetic light.
在其中一些实施例中，所述荧光层的厚度小于等于0.3mm。In some of these embodiments, the thickness of the fluorescent layer is less than or equal to 0.3 mm.
在其中一些实施例中，所述激光光源***还包括第一散射元件，所述第一散射元件设置在所述第一激发光源和所述第一匀光元件之间，所述第一散射元件用 于对所述第一激发光源发出的第一蓝色光进行散射和匀光处理。In some of these embodiments, the laser light source system further includes a first scattering element, the first scattering element is arranged between the first excitation light source and the first uniform light element, and the first scattering element It is used for scattering and homogenizing the first blue light emitted by the first excitation light source.
在其中一些实施例中，所述激光光源***还包括第二散射元件，所述第二散射元件设置在所述第二光源和所述第二匀光元件之间，所述第二散射元件用于对所述第二光源发出的所述第二蓝色光进行散射和匀光处理。In some of these embodiments, the laser light source system further includes a second scattering element, the second scattering element is arranged between the second light source and the second uniform light element, and the second scattering element uses Scattering and homogenizing the second blue light emitted by the second light source.
在其中一些实施例中，所述激光光源***还包括第一反射镜和第一透镜组，所述第一反射镜和所述第一透镜组依序设置在所述第一激发光源和所述分光合光装置之间。In some of these embodiments, the laser light source system further includes a first reflector and a first lens group, and the first reflector and the first lens group are sequentially arranged between the first excitation light source and the Between light-splitting and synthesizing devices.
在其中一些实施例中，所述激光光源***还包括第二反射镜和第二透镜组，所述第二反射镜和所述第二透镜组依序设置在所述第二光源和所述分光合光装置之间。In some of these embodiments, the laser light source system further includes a second reflector and a second lens group, and the second reflector and the second lens group are sequentially arranged between the second light source and the branch. between photosynthetic light apparatus.
在其中一些实施例中，所述第一激发光源包括第一蓝光激光器阵列、第二蓝光激光器阵列和偏振合光元件；所述第一蓝光激光器阵列和第二蓝光激光器阵列所在的平面互相垂直，所述偏振合光元件位于第一蓝光激光器阵列和第二蓝光激光器阵列之间，所述偏振合光元件与所述第一蓝光激光器阵列和第二蓝光激光器阵列所在平面相交设置；所述第一蓝光激发器阵列发出的光和第二蓝光激发光器阵列发出的光的偏振态不同，所述偏振合光元件对第一蓝光激光器阵列发出的光和第二蓝光激光器阵列发出的光进行合光输出，得到所述第一蓝色光。In some of these embodiments, the first excitation light source includes a first blue laser array, a second blue laser array, and a polarization combining element; the planes where the first blue laser array and the second blue laser array are located are perpendicular to each other, The polarization combining element is located between the first blue laser array and the second blue laser array, and the polarization combining element intersects the plane where the first blue laser array and the second blue laser array are located; the first The polarization states of the light emitted by the blue light exciter array and the light emitted by the second blue light exciter array are different, and the polarization combining element combines the light emitted by the first blue light laser array and the light emitted by the second blue laser array output, to obtain the first blue light.
在其中一些实施例中，所述激光光源***还包括第三透镜组，所述第三透镜组设置在所述分光合光装置和所述波长转换装置之间。In some of the embodiments, the laser light source system further includes a third lens group, and the third lens group is arranged between the light splitting and combining device and the wavelength conversion device.
在其中一些实施例中，所述波长转换装置设置在封闭的壳体中，所述壳体开设有通光口，所述第三透镜组设置于所述壳体的通光口。In some of the embodiments, the wavelength conversion device is arranged in a closed casing, and the casing is provided with a light opening, and the third lens group is arranged at the light opening of the casing.
在其中一些实施例中，所述波长转换装置设置在所述第一蓝色光的光径上， 相对彼此可移动。In some of the embodiments, the wavelength conversion devices are arranged on the optical path of the first blue light and are movable relative to each other.
本发明还提供一种激光投影设备，包括光机、镜头以及如上所述的激光光源***，所述激光光源***用于为所述光机提供光源光束，所述光机用于对所述光源光束进行调制并输出至所述镜头，所述镜头用于成像并投射至投影介质以形成投影画面。The present invention also provides a laser projection device, including a light machine, a lens, and the above-mentioned laser light source system, the laser light source system is used to provide light beams for the light machine, and the light machine is used to control the light source The light beam is modulated and output to the lens, and the lens is used for imaging and projecting to the projection medium to form a projection picture.
相较于现有技术，本发明至少具有以下有益效果：通过第一激发光源发出的第一蓝色光经过波长转换装置后产生黄色受激发光，该黄色受激发光与第二光源发出的第二蓝色光合光，进而形成白光输出，具有整体结构简单、成本较低而且出光效率高的优点；通过第一散射元件对第一蓝色光进行散射和匀光处理，通过第二散射元件对第二蓝色光进行散射和匀光处理，能够有效地减轻输出的白光的散斑现象；通过设置第一反射镜、第一透镜组、第二反射镜、第二透镜组和第三透镜组，有利于节省整个激光光源***占用的空间，减小分光合光装置的体积大小，减小波长转换装置的体积大小；通过设置第一蓝光激光器阵列、第二蓝光激光器阵列和偏振合光元件，能够减小第一激发光源占用的空间并得到高亮度的第一蓝色光；通过将波长转换装置设置在封闭的壳体中，可以提高波长转换装置的防尘效果，有利于延长波长转换装置的使用寿命，且能够获得高纯度的黄色受激发光；通过将波长转换装置和第一蓝色光相对彼此可移动设置，能够提高波长转换装置的散热效果，进一步提高波长转换装置的使用寿命；通过在同一周期内设置第一激发光源和第二光源的点亮时间，可以在同一周期同时出射多色光，提高单位时间的出光量，或者得到连续输出的白光。Compared with the prior art, the present invention has at least the following beneficial effects: the first blue light emitted by the first excitation light source passes through the wavelength conversion device to generate yellow excited light, and the yellow excited light is combined with the second light emitted by the second light source. The blue photosynthetic light, and then forms the white light output, which has the advantages of simple overall structure, low cost and high light extraction efficiency; the first blue light is scattered and homogenized by the first scattering element, and the second light is diffused by the second scattering element. Scattering and homogenizing the blue light can effectively reduce the speckle phenomenon of the output white light; by setting the first reflector, the first lens group, the second reflector, the second lens group and the third lens group, it is beneficial to Save the space occupied by the entire laser light source system, reduce the size of the light splitting and combining device, and reduce the size of the wavelength converting device; by setting the first blue laser array, the second blue laser array and the polarization combining element, it can reduce The space occupied by the first excitation light source and the first blue light with high brightness are obtained; by arranging the wavelength conversion device in the closed casing, the dustproof effect of the wavelength conversion device can be improved, which is beneficial to prolong the service life of the wavelength conversion device. And high-purity yellow excited light can be obtained; by moving the wavelength conversion device and the first blue light relative to each other, the heat dissipation effect of the wavelength conversion device can be improved, and the service life of the wavelength conversion device can be further improved; By setting the lighting time of the first excitation light source and the second light source, multiple colors of light can be emitted simultaneously in the same cycle, increasing the light output per unit time, or obtaining continuous white light output.
附图说明Description of drawings
为了更清楚地说明本发明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发明的一些实施例，对于本领域技术人员来讲，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。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.
图1是本发明实施例中一种激光光源***的结构示意图；Fig. 1 is a schematic structural view of a laser light source system in an embodiment of the present invention;
图2是本发明实施例中另一种激光光源***的结构示意图；Fig. 2 is the structural representation of another kind of laser light source system in the embodiment of the present invention;
图3是本发明实施例中波长转换装置的第一种结构示意图；FIG. 3 is a first structural schematic diagram of a wavelength conversion device in an embodiment of the present invention;
图4是本发明实施例中波长转换装置的第二种结构示意图；FIG. 4 is a second structural schematic diagram of a wavelength conversion device in an embodiment of the present invention;
图5是本发明实施例中壳体、波长转换装置和第三透镜组的结构示意图；5 is a schematic structural diagram of a housing, a wavelength conversion device and a third lens group in an embodiment of the present invention;
图6是本发明实施例中第一激发光源和第二光源在同一周期内点亮的第一种时序图；Fig. 6 is a first timing diagram of the first excitation light source and the second light source being turned on in the same period in the embodiment of the present invention;
图7是本发明实施例中第一激发光源和第二光源在同一周期内点亮的第二种时序图；Fig. 7 is a second time sequence diagram in which the first excitation light source and the second light source are turned on in the same period in the embodiment of the present invention;
图8是本发明实施例中第一激发光源和第二光源在同一周期内点亮的第三种时序图。Fig. 8 is a third time sequence diagram in which the first excitation light source and the second light source are turned on in the same period in the embodiment of the present invention.
具体实施方式Detailed ways
为了便于理解本发明实施例，下面将参照相关附图对本发明实施例进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。In order to facilitate understanding of the embodiments of the present invention, the embodiments of the present invention will be more fully described below with reference to the relevant drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领 域的技术人员通常理解的含义相同。本文中在本发明实施例中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terminology used herein in the embodiments of the present invention is only for the purpose of describing specific implementation manners, and is not intended to limit the present invention.
在本发明中，除非另有明确的规定或限定，术语“安装”、“连接”、“固定”等术语应做广义理解。例如，可以是固定连接，也可以是可拆卸连接，或一体连接；可以是机械连接，也可以是电连接；可以是直接连接，也可以通过中间媒介间接相连，也可以是两个元件内部的连通，也可以是仅为表面接触，或者通过中间媒介的表面接触连接。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, terms such as "installation", "connection" and "fixation" should be interpreted in a broad sense unless otherwise clearly specified or limited. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. Communication can also be only surface contact, or surface contact connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
此外，本发明术语“多个”是指大于或等于两个。术语“第一”、“第二”等仅用于区分描述，而不能理解为特指或特殊结构。术语“一些实施方式”、“其他实施方式”等的描述意指结合该实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本发明中，对上述术语的示意性表述不必须针对的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施方式或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本发明中描述的不同实施方式或示例以及不同实施方式或示例的特征进行结合和组合。In addition, the term "plurality" of the present invention means greater than or equal to two. The terms "first", "second" and so on are only used for distinguishing descriptions, and should not be interpreted as specific designations or special structures. The description of the terms "some embodiments", "other embodiments" and the like mean that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in the present invention without conflicting with each other.
本发明实施例提供一种激光光源***，如图1所示，该激光光源***包括第一激发光源1、第二光源2、第一匀光元件31、第二匀光元件32、波长转换装置4和分光合光装置5。An embodiment of the present invention provides a laser light source system. As shown in FIG. 1 , the laser light source system includes a first excitation light source 1, a second light source 2, a first uniform light element 31, a second light uniform element 32, and a wavelength conversion device. 4 and light splitting and combining device 5.
第一激发光源1用于发出第一蓝色光11，第二光源2用于发出第二蓝色光21。其中，第一激发光源1是激光光源，第二光源2可以是激光光源，也可以是LED光源等其它光源；第一蓝色光11的波长与第二蓝色光21的波长可以一样，也可以不一样。The first excitation light source 1 is used to emit a first blue light 11 , and the second light source 2 is used to emit a second blue light 21 . Wherein, the first excitation light source 1 is a laser light source, and the second light source 2 can be a laser light source, or other light sources such as an LED light source; the wavelength of the first blue light 11 can be the same as that of the second blue light 21, or can be different. Same.
第一匀光元件31设置在第一激发光源1和分光合光装置5之间，第二匀光元件32设置在第二光源2和分光合光装置5之间。第一匀光元件31用于对第一激发光源1发出的第一蓝色光11进行匀光处理，第二匀光元件32用于对第二光源2发出的第二蓝色光21进行匀光处理；分别经过匀光处理后的第一蓝色光11和第二蓝色光21能够获得较高的光能利用率和更均匀的光照度。在本发明实施例中，第一匀光元件31可以采用匀光棒或者复眼透镜等，第二匀光元件32可以采用匀光棒或者复眼透镜等。The first homogenizing element 31 is arranged between the first exciting light source 1 and the light splitting and combining device 5 , and the second homogenizing element 32 is arranged between the second light source 2 and the light splitting and combining device 5 . The first dodging element 31 is used for dodging the first blue light 11 emitted by the first exciting light source 1 , and the second dodging element 32 is used for dodging the second blue light 21 emitted by the second light source 2 ; The first blue light 11 and the second blue light 21 after uniform light treatment respectively can obtain higher light energy utilization efficiency and more uniform illuminance. In the embodiment of the present invention, the first dodging element 31 may be a dodging rod or a fly-eye lens, and the second dodging element 32 may be a dodging rod or a fly-eye lens.
如图3所示，在一些可选的实施例中，波长转换装置4包括荧光层41和具有反射面421的基板42，荧光层41设置在基板42的反射面421；即基板42本身具有反射功能，波长转换装置4包括荧光层41和具有反射功能的基板42共两层层结构。如图4所示，在一些可选的实施例中，波长转换装置4包括荧光层41、基板42和反射层43，反射层43位于基板42和荧光层41之间；即基板42本身不具有反射功能，起到承载反射层43和荧光层41的作用，波长转换装置4包括荧光层41、基板42和反射层43共三层层结构。As shown in Figure 3, in some optional embodiments, the wavelength conversion device 4 includes a fluorescent layer 41 and a substrate 42 with a reflective surface 421, and the fluorescent layer 41 is arranged on the reflective surface 421 of the substrate 42; that is, the substrate 42 itself has a reflective function, the wavelength converting device 4 includes a fluorescent layer 41 and a reflective substrate 42 with a two-layer structure. As shown in FIG. 4, in some optional embodiments, the wavelength conversion device 4 includes a fluorescent layer 41, a substrate 42, and a reflective layer 43, and the reflective layer 43 is located between the substrate 42 and the fluorescent layer 41; that is, the substrate 42 itself does not have The reflective function plays the role of carrying the reflective layer 43 and the fluorescent layer 41 . The wavelength conversion device 4 includes a three-layer structure of the fluorescent layer 41 , the substrate 42 and the reflective layer 43 .
如图1所示，分光合光装置5具有反射蓝光和透射黄光的特性。在本发明实施例中，分光合光装置5可以是二向色片，二向色片具有反射一部分波段的光并透射另一部分波段的光的特性，可以实现反射蓝光、透射黄光的目的。As shown in FIG. 1 , the light splitting and combining device 5 has characteristics of reflecting blue light and transmitting yellow light. In the embodiment of the present invention, the light splitting and combining device 5 may be a dichroic film, which has the characteristics of reflecting light in a part of the wavelength band and transmitting light in another part of the wave band, so as to achieve the purpose of reflecting blue light and transmitting yellow light.
如图1、图3和图4所示，分光合光装置5将第一蓝色光11反射至波长转换装置4的荧光层41，波长转换装置4的荧光层41接收第一蓝色光11，并对第一蓝色光11进行波长转换，得到黄色受激发光44；基板42的反射面421或者波长转换装置4的反射层43反射黄色受激发光44，使黄色受激发光44射向分光合光装置5。分光合光装置5透射黄色受激发光44并反射第二蓝色光21，经过分光 合光装置5反射后的第二蓝色光21与经过分光合光装置5透射后的黄色受激发光44合光输出。As shown in Figure 1, Figure 3 and Figure 4, the light splitting and combining device 5 reflects the first blue light 11 to the fluorescent layer 41 of the wavelength converting device 4, and the fluorescent layer 41 of the wavelength converting device 4 receives the first blue light 11, and Perform wavelength conversion on the first blue light 11 to obtain yellow stimulated light 44; the reflective surface 421 of the substrate 42 or the reflective layer 43 of the wavelength conversion device 4 reflects the yellow stimulated light 44, so that the yellow stimulated light 44 is emitted to the beam splitting light device 5. The light splitting and combining device 5 transmits the yellow stimulated light 44 and reflects the second blue light 21, and the second blue light 21 reflected by the light splitting and combining device 5 combines with the yellow excited light 44 transmitted by the splitting and combining device 5 output.
具体的，分光合光装置5具有相对设置的第一表面和第二表面，在图1中，第一表面即分光合光装置5的左上表面，第二表面即分光合光装置5的右下表面。第一蓝色光11射往分光合光装置5的第一表面，在分光合光装置5的第一表面发生反射并射往波长转换装置4的荧光层41，产生黄色受激发光44并通过基板42的反射面421或者波长转换装置4的反射层43射往分光合光装置5，黄色受激发光44能够透射于分光合光装置5的第一表面和第二表面，黄色受激发光44从分光合光装置5的第二表面射出。第二蓝色光21射往分光合光装置5的第二表面，在分光合光装置5的第二表面发生反射，经过分光合光装置5反射后的第二蓝色光21和经过分光合光装置5透射后的黄色受激发光44进行合光输出得到白光。Specifically, the light splitting and combining device 5 has a first surface and a second surface that are arranged oppositely. In FIG. surface. The first blue light 11 hits the first surface of the light-splitting and combining device 5, reflects on the first surface of the light-splitting and combining device 5 and goes to the fluorescent layer 41 of the wavelength conversion device 4, generates yellow stimulated light 44 and passes through the substrate The reflective surface 421 of 42 or the reflective layer 43 of the wavelength conversion device 4 is directed to the light-splitting and combining device 5, and the yellow stimulated light 44 can be transmitted through the first surface and the second surface of the light-splitting and combining device 5, and the yellow stimulated light 44 is transmitted from The light is emitted from the second surface of the light splitting and combining device 5 . The second blue light 21 shoots to the second surface of the light-splitting and combining device 5, and is reflected on the second surface of the light-splitting and combining device 5. 5. The transmitted yellow stimulated light 44 is combined and output to obtain white light.
本发明实施例还提供另一种激光光源***，如图2所示，该激光光源***包括第一激发光源1、第二光源2、第一匀光元件31、第二匀光元件32、波长转换装置4和分光合光装置5。The embodiment of the present invention also provides another laser light source system. As shown in FIG. Conversion device 4 and light splitting and combining device 5 .
第一激发光源1用于发出第一蓝色光11，第二光源2用于发出第二蓝色光21。其中，第一激发光源1是激光光源，第二光源2可以是激光光源，也可以是LED光源等其它光源；第一蓝色光11的波长与第二蓝色光21的波长可以一样，也可以不一样。The first excitation light source 1 is used to emit a first blue light 11 , and the second light source 2 is used to emit a second blue light 21 . Wherein, the first excitation light source 1 is a laser light source, and the second light source 2 can be a laser light source, or other light sources such as an LED light source; the wavelength of the first blue light 11 can be the same as that of the second blue light 21, or can be different. Same.
第一匀光元件31设置在第一激发光源1和分光合光装置5之间，第二匀光元件32设置在第二光源2和分光合光装置5之间。第一匀光元件31用于对第一激发光源1发出的第一蓝色光11进行匀光处理，第二匀光元件32用于对第二光 源2发出的第二蓝色光21进行匀光处理；分别经过匀光处理后的第一蓝色光11和第二蓝色光21能够获得较高的光能利用率和更均匀的光照度。在本发明实施例中，第一匀光元件31可以采用匀光棒或者复眼透镜等，第二匀光元件32可以采用匀光棒或者复眼透镜等。The first homogenizing element 31 is arranged between the first exciting light source 1 and the light splitting and combining device 5 , and the second homogenizing element 32 is arranged between the second light source 2 and the light splitting and combining device 5 . The first dodging element 31 is used for dodging the first blue light 11 emitted by the first exciting light source 1 , and the second dodging element 32 is used for dodging the second blue light 21 emitted by the second light source 2 ; The first blue light 11 and the second blue light 21 after uniform light treatment respectively can obtain higher light energy utilization efficiency and more uniform illuminance. In the embodiment of the present invention, the first dodging element 31 may be a dodging rod or a fly-eye lens, and the second dodging element 32 may be a dodging rod or a fly-eye lens.
如图3所示，在一些可选的实施例中，波长转换装置4包括荧光层41和具有反射面421的基板42，荧光层41设置在基板42的反射面421；即基板42本身具有反射功能，波长转换装置4包括荧光层41和具有反射功能的基板42共两层层结构。如图4所示，在一些可选的实施例中，波长转换装置4包括荧光层41、基板42和反射层43，反射层43位于基板42和荧光层41之间；即基板42本身不具有反射功能，起到承载反射层43和荧光层41的作用，波长转换装置4包括荧光层41、基板42和反射层43共三层层结构。As shown in Figure 3, in some optional embodiments, the wavelength conversion device 4 includes a fluorescent layer 41 and a substrate 42 with a reflective surface 421, and the fluorescent layer 41 is arranged on the reflective surface 421 of the substrate 42; that is, the substrate 42 itself has a reflective function, the wavelength converting device 4 includes a fluorescent layer 41 and a reflective substrate 42 with a two-layer structure. As shown in FIG. 4, in some optional embodiments, the wavelength conversion device 4 includes a fluorescent layer 41, a substrate 42, and a reflective layer 43, and the reflective layer 43 is located between the substrate 42 and the fluorescent layer 41; that is, the substrate 42 itself does not have The reflective function plays the role of carrying the reflective layer 43 and the fluorescent layer 41 . The wavelength conversion device 4 includes a three-layer structure of the fluorescent layer 41 , the substrate 42 and the reflective layer 43 .
如图2所示，分光合光装置5具有透射蓝光和反射黄光的特性。在本发明实施例中，分光合光装置5可以是二向色片，二向色片具有反射一部分波段的光并透射另一部分波段的光的特性，可以实现透射蓝光、反射黄光的目的。As shown in FIG. 2 , the light splitting and combining device 5 has the characteristics of transmitting blue light and reflecting yellow light. In the embodiment of the present invention, the light splitting and combining device 5 may be a dichroic film, which has the characteristics of reflecting light in a part of the wavelength band and transmitting light in another part of the wave band, so as to achieve the purpose of transmitting blue light and reflecting yellow light.
如图2、图3和图4所示，分光合光装置5将第一蓝色光11透射至波长转换装置4的荧光层41，波长转换装置4的荧光层41接收第一蓝色光11，并对第一蓝色光11进行波长转换，得到黄色受激发光44；基板42的反射面421或者波长转换装置4的反射层43反射黄色受激发光44，使黄色受激发光44射向分光合光装置5。分光合光装置5反射黄色受激发光44并透射第二蓝色光21，经过分光合光装置5透射后的第二蓝色光21与经过分光合光装置5反射后的黄色受激发光44合光输出。As shown in Fig. 2, Fig. 3 and Fig. 4, the light splitting and combining device 5 transmits the first blue light 11 to the fluorescent layer 41 of the wavelength converting device 4, and the fluorescent layer 41 of the wavelength converting device 4 receives the first blue light 11, and Perform wavelength conversion on the first blue light 11 to obtain yellow stimulated light 44; the reflective surface 421 of the substrate 42 or the reflective layer 43 of the wavelength conversion device 4 reflects the yellow stimulated light 44, so that the yellow stimulated light 44 is emitted to the beam splitting light device 5. The light-splitting and combining device 5 reflects the yellow excited light 44 and transmits the second blue light 21, and the second blue light 21 transmitted through the light-splitting and combining device 5 is combined with the yellow excited light 44 reflected by the light-splitting and combining device 5 output.
具体的，分光合光装置5具有相对设置的第一表面和第二表面，在图2中， 第一表面即分光合光装置5的左上表面，第二表面即分光合光装置5的右下表面。第一蓝色光11射往分光合光装置5的第二表面，并透射于分光合光装置5的第二表面和第一表面之后射往波长转换装置4的荧光层41，产生黄色受激发光44并通过基板42的反射面421或者波长转换装置4的反射层43射往分光合光装置5，黄色受激发光44在分光合光装置5的第一表面发生反射并射出。第二蓝色光21射往分光合光装置5的第二表面，并透射于分光合光装置5的第二表面和第一表面之后，和经过分光合光装置5反射后的黄色受激发光44进行合光输出得到白光。Specifically, the light splitting and combining device 5 has a first surface and a second surface oppositely arranged. In FIG. surface. The first blue light 11 is incident on the second surface of the light splitting and combining device 5, and is transmitted to the fluorescent layer 41 of the wavelength conversion device 4 after being transmitted through the second surface and the first surface of the splitting and combining device 5, generating yellow stimulated light 44 and pass through the reflective surface 421 of the substrate 42 or the reflective layer 43 of the wavelength conversion device 4 to the light-splitting and combining device 5, and the yellow stimulated light 44 is reflected on the first surface of the light-splitting and combining device 5 and emitted. The second blue light 21 shoots to the second surface of the light-splitting and combining device 5, and after being transmitted through the second surface and the first surface of the light-splitting and combining device 5, and the yellow stimulated light 44 reflected by the light-splitting and combining device 5 Combined light output to obtain white light.
如图3和图4所示，在一些可选的实施例中，荧光层41的厚度小于等于0.4mm，或者小于等于0.3mm，或者小于等于0.15mm；在更优选的实施例中，荧光层41的厚度小于等于0.3mm。荧光层41的厚度小于等于0.3mm的情况下，既能够保障荧光层41中的荧光粉被充分激发出黄色受激发44光并反射回出射光路，同时还能够减少热量在荧光层41中的富积，提高荧光层41的激发效率和保障荧光层41的使用寿命。As shown in Figure 3 and Figure 4, in some optional embodiments, the thickness of the fluorescent layer 41 is less than or equal to 0.4mm, or less than or equal to 0.3mm, or less than or equal to 0.15mm; in a more preferred embodiment, the thickness of the fluorescent layer The thickness of 41 is less than or equal to 0.3mm. When the thickness of the fluorescent layer 41 is less than or equal to 0.3 mm, it can ensure that the fluorescent powder in the fluorescent layer 41 is fully excited to emit yellow excited 44 light and reflect it back to the outgoing light path, and at the same time, it can reduce the heat loss in the fluorescent layer 41. enrichment, improve the excitation efficiency of the fluorescent layer 41 and ensure the service life of the fluorescent layer 41.
在一些可选的实施例中，如图1和图2所示，激光光源***还包括第一散射元件61，第一散射元件61设置在第一激发光源1和第一匀光元件31之间，第一散射元件61用于对第一激发光源1发出的第一蓝色光11进行散射和匀光处理。经过散射和匀光处理的第一蓝色光11再通过第一匀光元件31进行进一步的匀光处理。经过散射和匀光处理后的第一蓝色光11不易产生干涉现象，从而减轻输出的白光的散斑现象。在本发明实施例中，第一散射元件61可以是散射片。In some optional embodiments, as shown in FIG. 1 and FIG. 2 , the laser light source system further includes a first scattering element 61, and the first scattering element 61 is arranged between the first excitation light source 1 and the first uniform light element 31 , the first scattering element 61 is used for scattering and homogenizing the first blue light 11 emitted by the first exciting light source 1 . The scattered and homogenized first blue light 11 passes through the first homogenization element 31 for further homogenization. The first blue light 11 after the scattering and homogenization treatment is less prone to interference phenomenon, thereby reducing the speckle phenomenon of the output white light. In the embodiment of the present invention, the first scattering element 61 may be a scattering sheet.
在一些可选的实施例中，如图1和图2所示，激光光源***还包括第二散射元件62，第二散射元件62设置在第二光源2和第二匀光元件32之间，第二散射 元件62用于对第二光源2发出的第二蓝色光21进行散射和匀光处理。经过散射和匀光处理的第二蓝色光21再通过第二匀光元件32进行进一步的匀光处理。经过散射和匀光处理后的第二蓝色光21不易产生干涉现象，从而减轻输出的白光的散斑现象。在本发明实施例中，第二散射元件62可以是散射片。In some optional embodiments, as shown in FIG. 1 and FIG. 2 , the laser light source system further includes a second scattering element 62, and the second scattering element 62 is arranged between the second light source 2 and the second uniform light element 32, The second scattering element 62 is used for scattering and homogenizing the second blue light 21 emitted by the second light source 2 . The second blue light 21 that has been diffused and homogenized passes through the second homogenization element 32 for further homogenization. The second blue light 21 after the scattering and homogenization treatment is less prone to interference phenomenon, thereby reducing the speckle phenomenon of the output white light. In the embodiment of the present invention, the second scattering element 62 may be a scattering sheet.
在一些可选的实施例中，如图1所示，激光光源***还包括第一反射镜71和第一透镜组72，第一反射镜71和第一透镜组72依序设置在第一激发光源1和分光合光装置5之间。第一蓝色光11通过第一反射镜71可以改变光路方向，有利于节省整个激光光源***占用的空间；第一蓝色光11通过第一透镜组72可以实现光线的汇聚收拢，有利于减小分光合光装置5的体积大小。In some optional embodiments, as shown in FIG. 1, the laser light source system further includes a first reflector 71 and a first lens group 72, and the first reflector 71 and the first lens group 72 are sequentially arranged at the first excitation Between the light source 1 and the light splitting and combining device 5 . The first blue light 11 can change the direction of the optical path through the first reflector 71, which is beneficial to save the space occupied by the entire laser light source system; The volume size of the photosynthetic light device 5 .
在一些可选的实施例中，如图1和图2所示，激光光源***还包括第二反射镜73和第二透镜组74，第二反射镜73和第二透镜组74依序设置在第二光源2和分光合光装置5之间。第二蓝色光21通过第二反射镜73可以改变光路方向，有利于节省整个激光光源***占用的空间；第二蓝色光21通过第二透镜组74可以实现光线的汇聚收拢，有利于减小分光合光装置6的体积大小。In some optional embodiments, as shown in FIG. 1 and FIG. 2 , the laser light source system further includes a second reflector 73 and a second lens group 74, and the second reflector 73 and the second lens group 74 are sequentially arranged on Between the second light source 2 and the light splitting and combining device 5 . The second blue light 21 can change the direction of the optical path through the second reflector 73, which is beneficial to save the space occupied by the entire laser light source system; The volume size of the photosynthetic light device 6 .
在一些可选的实施例中，如图1和图2所示，第一激发光源1包括第一蓝光激光器阵列12、第二蓝光激光器阵列13和偏振合光元件14。第一蓝光激光器阵列12和第二蓝光激光器阵列13所在的平面互相垂直，偏振合光元件14位于第一蓝光激光器阵列12和第二蓝光激光器阵列13之间，偏振合光元件14与第一蓝光激光器阵列12和第二蓝光激光器阵列13所在平面相交设置。第一蓝光激发器阵列12发出的光和第二蓝光激发光器阵列13发出的光的偏振态不同，偏振合光元件14对第一蓝光激光器阵列12发出的光和第二蓝光激光器13阵列发出的光进行合光输出，得到第一蓝色光11。In some optional embodiments, as shown in FIG. 1 and FIG. 2 , the first excitation light source 1 includes a first blue laser array 12 , a second blue laser array 13 and a polarization combining element 14 . The planes where the first blue laser array 12 and the second blue laser array 13 are located are perpendicular to each other, and the polarization combining element 14 is located between the first blue laser array 12 and the second blue laser array 13, and the polarization combining element 14 is connected to the first blue laser array. The planes where the laser array 12 and the second blue laser array 13 are located intersect. The polarization states of the light emitted by the first blue light exciter array 12 and the light emitted by the second blue light exciter array 13 are different, and the polarization combination element 14 emits the light emitted by the first blue light laser array 12 and the light emitted by the second blue laser array 13. The light is combined and output to obtain the first blue light 11 .
具体的，第一蓝光激光器阵列12设置有呈矩形阵列布置的16个蓝光激光器，第二蓝光激光器13设置有呈矩形阵列布置的16个蓝光激光器；相比于直接在同一平面上矩形阵列布置32个蓝光激光器，相互垂直布置的第一蓝光激光器阵列12和第二蓝光激光器阵列13显然能够更加合理地利用空间，减小第一激发光源1占用的空间。具体的，第一蓝光激光器阵列12可以发出P偏振蓝光121，第二蓝光激光器阵列13可以发出S偏振蓝光131；偏振合光元件14能够透射P偏振蓝光121和反射S偏振蓝光131，P偏振蓝光121和S偏振蓝光131经过偏振合光元件14进行偏振合光后输出第一蓝色光11；通过偏振合光元件14对第一蓝光激光器阵列12发出光和第二蓝光激光器阵列13发出的光进行合光，可以得到高亮度的第一蓝色光11。Specifically, the first blue laser array 12 is provided with 16 blue lasers arranged in a rectangular array, and the second blue laser 13 is provided with 16 blue lasers arranged in a rectangular array; The blue lasers, the first blue laser array 12 and the second blue laser array 13 arranged perpendicular to each other can obviously make more reasonable use of space and reduce the space occupied by the first excitation light source 1 . Specifically, the first blue laser array 12 can emit P polarized blue light 121, and the second blue laser array 13 can emit S polarized blue light 131; the polarization combining element 14 can transmit P polarized blue light 121 and reflect S polarized blue light 131, and the P polarized blue light 121 and S-polarized blue light 131 output the first blue light 11 after the polarization combining element 14 performs polarization combination; Combining the light, the first blue light 11 with high brightness can be obtained.
在一些可选的实施例中，如图1和图2所示，激光光源***还包括第三透镜组75，第三透镜组75设置在分光合光装置5和波长转换装置4之间。经过分光合光装置5反射的第一蓝色光11通过第三透镜组75可以实现光线的汇聚收拢，有利于减小波长转换装置4的体积大小，或者减少波长转换装置4的荧光层41的材料。In some optional embodiments, as shown in FIGS. 1 and 2 , the laser light source system further includes a third lens group 75 , and the third lens group 75 is arranged between the light splitting and combining device 5 and the wavelength conversion device 4 . The first blue light 11 reflected by the light splitting and combining device 5 can be converged and shrunk through the third lens group 75, which is conducive to reducing the volume of the wavelength conversion device 4, or reducing the material of the fluorescent layer 41 of the wavelength conversion device 4 .
在一些可选的实施例中，如图1、图2和图4所示，波长转换装置4设置在封闭的壳体8中，壳体8开设有通光口81，第三透镜组75设置于壳体8的通光口81。通过将波长转换装置4设置在封闭的壳体中，可以提高波长转换装置4的防尘效果，有利于延长波长转换装置4的使用寿命；而且还可以减少外界光线对波长转换装置4的干扰和影响，以获得高纯度的黄色受激发光44。In some optional embodiments, as shown in FIG. 1 , FIG. 2 and FIG. 4 , the wavelength conversion device 4 is arranged in a closed casing 8, the casing 8 is provided with a light opening 81, and the third lens group 75 is set on the light opening 81 of the housing 8 . By arranging the wavelength conversion device 4 in a closed housing, the dust-proof effect of the wavelength conversion device 4 can be improved, which is beneficial to prolong the service life of the wavelength conversion device 4; and the interference and interference of external light to the wavelength conversion device 4 can also be reduced. effect to obtain high-purity yellow stimulated light 44 .
在一些可选的实施例中，如图1和图2所示，波长转换装置4设置在第一蓝色光11的光径上，而且相对彼此可移动，有利于提高波长转换装置4的散热效 果，进一步提高波长转换装置4的使用寿命。具体的，波长转换装置4和第一蓝色光11的相对彼此可移动可以是圆周转动或者往复直线运动等。In some optional embodiments, as shown in FIG. 1 and FIG. 2 , the wavelength conversion device 4 is arranged on the optical path of the first blue light 11 and is movable relative to each other, which is beneficial to improve the heat dissipation effect of the wavelength conversion device 4 , further improving the service life of the wavelength converting device 4 . Specifically, the relative movement of the wavelength conversion device 4 and the first blue light 11 may be circular rotation or reciprocating linear motion.
在一些可选的实施例中，在同一周期内，第一激发光源1和第二光源2的点亮时间段有重合。例如，如图5所示，在同一周期t 1内，第一激发光源1的在0至
Figure PCTCN2022105594-appb-000001
的时间段内熄灭，在
Figure PCTCN2022105594-appb-000002
至
Figure PCTCN2022105594-appb-000003
的时间段内点亮，在
Figure PCTCN2022105594-appb-000004
至t 1的时间段内熄灭；第二光源2的在0至
Figure PCTCN2022105594-appb-000005
的时间段内熄灭，在
Figure PCTCN2022105594-appb-000006
至t 1的时间段内点亮；那么，第一激发光源1和第二光源2在
Figure PCTCN2022105594-appb-000007
至
Figure PCTCN2022105594-appb-000008
的时间段均点亮，即第一激发光源1和第二光源2的点亮时间段在
Figure PCTCN2022105594-appb-000009
至
Figure PCTCN2022105594-appb-000010
重合；此时，激光光源***在0至
Figure PCTCN2022105594-appb-000011
的时间段内熄灭，在
Figure PCTCN2022105594-appb-000012
至
Figure PCTCN2022105594-appb-000013
的时间段内输出蓝光，在
Figure PCTCN2022105594-appb-000014
至
Figure PCTCN2022105594-appb-000015
的时间段内输出白光，在
Figure PCTCN2022105594-appb-000016
至t 1的时间段内输出黄光。通过设置第一激发光源1和第二光源2在同一周期内的点亮时间段有重合，能够在同一周期同时出射多色光，提高单位时间的出光量。 In some optional embodiments, within the same cycle, the lighting time periods of the first excitation light source 1 and the second light source 2 overlap. For example, as shown in Figure 5, within the same period t1 , the first excitation light source 1 is between 0 and
Figure PCTCN2022105594-appb-000001
extinguished during the period of time, in the
Figure PCTCN2022105594-appb-000002
to
Figure PCTCN2022105594-appb-000003
lights up during the period of
Figure PCTCN2022105594-appb-000004
extinguished during the time period from t to t 1 ;
Figure PCTCN2022105594-appb-000005
extinguished during the period of time, in the
Figure PCTCN2022105594-appb-000006
to light during the time period of t 1 ; then, the first excitation light source 1 and the second light source 2 are in
Figure PCTCN2022105594-appb-000007
to
Figure PCTCN2022105594-appb-000008
The time periods are all on, that is, the lighting time periods of the first excitation light source 1 and the second light source 2 are
Figure PCTCN2022105594-appb-000009
to
Figure PCTCN2022105594-appb-000010
Coincident; at this time, the laser light source system is between 0 and
Figure PCTCN2022105594-appb-000011
extinguished during the period of time, in the
Figure PCTCN2022105594-appb-000012
to
Figure PCTCN2022105594-appb-000013
Blu-ray output during the period of time, in the
Figure PCTCN2022105594-appb-000014
to
Figure PCTCN2022105594-appb-000015
output white light during the period of time, in
Figure PCTCN2022105594-appb-000016
Yellow light is output during the period from t1 to t1 . By setting the lighting time periods of the first excitation light source 1 and the second light source 2 to overlap in the same cycle, multiple colors of light can be emitted simultaneously in the same cycle, and the light output per unit time can be increased.
在一些可选的实施例中，在同一周期内，第一激发光源点亮整个周期，第二光源点亮部分周期或整个周期。例如，如图6所示，在同一周期t 2内，第一激发光源1在0至t 2的时间段内点亮；第二光源2在0至
Figure PCTCN2022105594-appb-000017
的时间段内熄灭，在
Figure PCTCN2022105594-appb-000018
至t 1的时间段内点亮；此时，激光光源***在0至
Figure PCTCN2022105594-appb-000019
的时间段内输出黄光，在
Figure PCTCN2022105594-appb-000020
至t 1的时间段内输出白光。通过设置第一激发光源1在同一周期内点亮整个周期，第二光源2在同一周期内的点亮部分周期，能够在同一周期同时出射多色光，提高单位时间的出光量。又例如，如图7所示，在同一周期t 3内，第一激发光源1在0至t 3的时间段内点亮；第二光源2在0至t 3的时间段内点亮；此时，激光光源***在0至t 3的时间段内输出白光。通过设置第一激发光源1和第二光源2在同一周期内分别点亮整个周期，能够在同一周期得到连续输出的白光。本发明实施例还提供一种激光投影设备，该激光投影设备包括光机、镜头以及如前所述的 激光光源***。激光光源***用于为光机提供光源光束，光机用于对光源光束进行调制并输出至镜头，镜头用于成像并投射至投影介质以形成投影画面。 In some optional embodiments, within the same period, the first exciting light source is turned on for the whole period, and the second light source is turned on for a part of the period or the whole period. For example, as shown in Figure 6, in the same period t2 , the first exciting light source 1 is lit during the time period from 0 to t2; the second light source 2 is lit during the period from 0 to
Figure PCTCN2022105594-appb-000017
extinguished during the period of time, in the
Figure PCTCN2022105594-appb-000018
Light up during the period from t 1 to t 1 ; at this time, the laser light source system is
Figure PCTCN2022105594-appb-000019
Output yellow light during the period of time, in
Figure PCTCN2022105594-appb-000020
White light is output during the time period up to t1 . By setting the first excitation light source 1 to light up the whole period in the same period, and the second light source 2 to light up part of the period in the same period, multicolor light can be emitted simultaneously in the same period, and the light output per unit time can be increased. For another example, as shown in Figure 7, in the same period t3 , the first excitation light source 1 is lit during the time period from 0 to t3 ; the second light source 2 is lit during the time period from 0 to t3 ; , the laser light source system outputs white light during the time period from 0 to t3 . By arranging the first exciting light source 1 and the second light source 2 to be turned on for the whole period in the same period, continuous output white light can be obtained in the same period. An embodiment of the present invention also provides a laser projection device, which includes an optical machine, a lens, and the aforementioned laser light source system. The laser light source system is used to provide the light source beam for the light machine, the light machine is used to modulate the light source beam and output it to the lens, and the lens is used for imaging and projecting it to the projection medium to form a projection picture.
综上所述，本发明实施例提供的激光光源***和激光投影设备，通过第一激发光源1发出的第一蓝色光11经过波长转换装置5后产生黄色受激发光51，该黄色受激发光51与第二光源2发出的第二蓝色光21合光，进而形成白光输出。相比于使用红、绿、蓝三种颜色的激光光源进行混色得到白光输出的方案，本发明实施例只采用两组蓝色激发光源就能获得白光输出，而且由于蓝色激发光源相比于红色、绿色激发光源的成本更低、电光转化效率更高，因此具有整体结构简单、成本较低而且出光效率高的优点。To sum up, in the laser light source system and laser projection equipment provided by the embodiments of the present invention, the first blue light 11 emitted by the first excitation light source 1 passes through the wavelength conversion device 5 to generate yellow stimulated light 51, and the yellow stimulated light 51 combines with the second blue light 21 emitted by the second light source 2 to form white light output. Compared with the scheme of using red, green, and blue laser light sources for color mixing to obtain white light output, the embodiment of the present invention can obtain white light output only by using two sets of blue excitation light sources, and because the blue excitation light source is compared to Red and green excitation light sources have lower cost and higher electro-optical conversion efficiency, so they have the advantages of simple overall structure, lower cost and high light extraction efficiency.
以上实施方式仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施方式对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施方式所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施方式技术方案的精神和范围，均应包含在本发明的保护范围之内。The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications to the technical solutions recorded, or equivalent replacement of some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and shall be included in the scope of the technical solutions of the present invention. within the scope of protection.

Claims (14)

  1. 一种激光光源***，其特征在于，包括：第一激发光源、第二光源、第一匀光元件、第二匀光元件、波长转换装置和分光合光装置；A laser light source system, characterized in that it includes: a first excitation light source, a second light source, a first homogenizing element, a second homogenizing element, a wavelength conversion device, and a light splitting and combining device;
    所述第一激发光源发出第一蓝色光，所述第二光源发出第二蓝色光；The first excitation light source emits a first blue light, and the second light source emits a second blue light;
    所述第一匀光元件设置在所述第一激发光源和所述分光合光装置之间，所述第二匀光元件设置在所述第二光源和所述分光合光装置之间；The first homogenizing element is disposed between the first exciting light source and the light splitting and combining device, and the second homogenizing element is disposed between the second light source and the splitting and combining device;
    所述波长转换装置包括荧光层和具有反射面的基板，所述荧光层设置在所述基板的反射面，或者，所述波长转换装置包括荧光层、基板和反射层，所述反射层位于所述基板和荧光层之间；The wavelength conversion device includes a fluorescent layer and a substrate with a reflective surface, the fluorescent layer is arranged on the reflective surface of the substrate, or the wavelength conversion device includes a fluorescent layer, a substrate, and a reflective layer, and the reflective layer is located on the reflective surface of the substrate. between the substrate and the fluorescent layer;
    所述分光合光装置反射所述第一激发光源发出的第一蓝色光至所述荧光层，所述荧光层接收所述第一激发光源发出的第一蓝色光，并进行波长转换得到黄色受激发光；The light splitting and combining device reflects the first blue light emitted by the first excitation light source to the fluorescent layer, and the fluorescent layer receives the first blue light emitted by the first excitation light source, and performs wavelength conversion to obtain a yellow stimulated light. Excitation light;
    所述分光合光装置透射所述黄色受激发光并反射所述第二蓝色光，将黄色受激发光和第二蓝色光合光后输出。The photosynthetic device transmits the yellow stimulated light and reflects the second blue light, and outputs the yellow stimulated light and the second blue photosynthetic light.
  2. 一种激光光源***，其特征在于，包括：第一激发光源、第二光源、第一匀光元件、第二匀光元件、波长转换装置和分光合光装置；A laser light source system, characterized in that it includes: a first excitation light source, a second light source, a first homogenizing element, a second homogenizing element, a wavelength conversion device, and a light splitting and combining device;
    所述第一激发光源发出第一蓝色光，所述第二光源发出第二蓝色光；The first excitation light source emits a first blue light, and the second light source emits a second blue light;
    所述第一匀光元件设置在所述第一激发光源和所述分光合光装置之间，所述第二匀光元件设置在所述第二光源和所述分光合光装置之间；The first homogenizing element is disposed between the first exciting light source and the light splitting and combining device, and the second homogenizing element is disposed between the second light source and the splitting and combining device;
    所述波长转换装置包括荧光层和具有反射面的基板，所述荧光层设置在所述基板的反射面，或者，所述波长转换装置包括荧光层、基板和反射层，所述反射层位于所述基板和荧光层之间；The wavelength conversion device includes a fluorescent layer and a substrate with a reflective surface, the fluorescent layer is arranged on the reflective surface of the substrate, or the wavelength conversion device includes a fluorescent layer, a substrate, and a reflective layer, and the reflective layer is located on the reflective surface of the substrate. between the substrate and the fluorescent layer;
    所述分光合光装置透射所述第一激发光源发出的第一蓝色光至所述荧光层，所述荧光层接收所述第一激发光源发出的第一蓝色光，并进行波长转换得到黄色受激发光；The light splitting and combining device transmits the first blue light emitted by the first exciting light source to the fluorescent layer, and the fluorescent layer receives the first blue light emitted by the first exciting light source, and performs wavelength conversion to obtain a yellow colored light. Excitation light;
    所述分光合光装置反射所述黄色受激发光并透射所述第二蓝色光，将黄色受激发光和第二蓝色光合光后输出。The photosynthetic device reflects the yellow excited light and transmits the second blue light, and outputs the yellow excited light and the second blue photosynthetic light.
  3. 根据权利要求1或2所述的激光光源***，其特征在于，所述荧光层的厚度小于等于0.3mm。The laser light source system according to claim 1 or 2, characterized in that the thickness of the fluorescent layer is less than or equal to 0.3mm.
  4. 根据权利要求1或2所述的激光光源***，其特征在于，所述激光光源***还包括第一散射元件，所述第一散射元件设置在所述第一激发光源和所述第一匀光元件之间，所述第一散射元件用于对所述第一激发光源发出的第一蓝色光进行散射和匀光处理。The laser light source system according to claim 1 or 2, characterized in that, the laser light source system further comprises a first scattering element, the first scattering element is arranged between the first excitation light source and the first homogenization Between the elements, the first scattering element is used to scatter and homogenize the first blue light emitted by the first excitation light source.
  5. 根据权利要求1或2所述的激光光源***，其特征在于，所述激光光源***还包括第二散射元件，所述第二散射元件设置在所述第二光源和所述第二匀光元件之间，所述第二散射元件用于对所述第二光源发出的所述第二蓝色光进行散射和匀光处理。The laser light source system according to claim 1 or 2, characterized in that, the laser light source system further comprises a second scattering element, the second scattering element is arranged between the second light source and the second uniform light element Between, the second scattering element is used to scatter and homogenize the second blue light emitted by the second light source.
  6. 根据权利要求1所述的激光光源***，其特征在于，所述激光光源***还包括第一反射镜和第一透镜组，所述第一反射镜和所述第一透镜组依序设置在所述第一激发光源和所述分光合光装置之间。The laser light source system according to claim 1, wherein the laser light source system further comprises a first reflector and a first lens group, and the first reflector and the first lens group are sequentially arranged at the between the first excitation light source and the light splitting and combining device.
  7. 根据权利要求1或2所述的激光光源***，其特征在于，所述激光光源***还包括第二反射镜和第二透镜组，所述第二反射镜和所述第二透镜组依序设置在所述第二光源和所述分光合光装置之间。The laser light source system according to claim 1 or 2, wherein the laser light source system further comprises a second reflector and a second lens group, and the second reflector and the second lens group are arranged in sequence Between the second light source and the light splitting and combining device.
  8. 根据权利要求1或2所述的激光光源***，其特征在于，所述第一激发光源包括第一蓝光激光器阵列、第二蓝光激光器阵列和偏振合光元件；所述第一蓝光激光器阵列和第二蓝光激光器阵列所在的平面互相垂直，所述偏振合光元件位于第一蓝光激光器阵列和第二蓝光激光器阵列之间，所述偏振合光元件与所述第一蓝光激光器阵列和第二蓝光激光器阵列所在平面相交设置；所述第一蓝光激发器阵列发出的光和第二蓝光激发光器阵列发出的光的偏振态不同，所述偏振合光元件对第一蓝光激光器阵列发出的光和第二蓝光激光器阵列发出的光进行合光输出，得到所述第一蓝色光。The laser light source system according to claim 1 or 2, wherein the first excitation light source comprises a first blue laser array, a second blue laser array and a polarization combining element; the first blue laser array and the second blue laser array The planes where the two blue laser arrays are located are perpendicular to each other, the polarization combining element is located between the first blue laser array and the second blue laser array, the polarization combining element is connected to the first blue laser array and the second blue laser array The planes where the arrays are located intersect and are arranged; the polarization states of the light emitted by the first blue light exciter array and the light emitted by the second blue light exciter array are different, and the polarization combination element is used for the light emitted by the first blue light laser array and the second blue light exciter array. The light emitted by the two blue laser arrays is combined and output to obtain the first blue light.
  9. 根据权利要求1或2所述的激光光源***，其特征在于，所述激光光源***还包括第三透镜组，所述第三透镜组设置在所述分光合光装置和所述波长转换装置之间。The laser light source system according to claim 1 or 2, characterized in that, the laser light source system further comprises a third lens group, and the third lens group is arranged between the light splitting and combining device and the wavelength conversion device between.
  10. 根据权利要求9所述的激光光源***，其特征在于，所述波长转换装置设置在封闭的壳体中，所述壳体开设有通光口，所述第三透镜组设置于所述壳体的通光口。The laser light source system according to claim 9, wherein the wavelength conversion device is arranged in a closed casing, the casing is provided with a light opening, and the third lens group is arranged in the casing light port.
  11. 根据权利要求1或2所述的激光光源***，其特征在于，所述波长转换装置设置在所述第一蓝色光的光径上，相对彼此可移动。The laser light source system according to claim 1 or 2, wherein the wavelength conversion device is arranged on the optical path of the first blue light and is movable relative to each other.
  12. 根据权利要求1或2所述的激光光源***，其特征在于，在同一周期内，所述第一激发光源和第二光源的点亮时间段有重合。The laser light source system according to claim 1 or 2, characterized in that, within the same period, the lighting time periods of the first excitation light source and the second light source overlap.
  13. 根据权利要求1或2所述的激光光源***，其特征在于，在同一周期内，所述第一激发光源点亮整个周期，所述第二光源点亮部分周期或整个周期。The laser light source system according to claim 1 or 2, characterized in that, in the same period, the first excitation light source is turned on for the whole period, and the second light source is turned on for a part of the period or the whole period.
  14. 一种激光投影设备，其特征在于，包括光机、镜头以及如权利要求1至13任意一项所述的激光光源***，所述激光光源***用于为所述光机提供光源光束，所述光机用于对所述光源光束进行调制并输出至所述镜头，所述镜头用于成像并投射至投影介质以形成投影画面。A laser projection device, characterized in that it includes an optical machine, a lens, and the laser light source system according to any one of claims 1 to 13, the laser light source system is used to provide a light source beam for the optical machine, the The light engine is used to modulate the light beam of the light source and output it to the lens, and the lens is used to form an image and project it to a projection medium to form a projection picture.
PCT/CN2022/105594 2021-07-30 2022-07-14 Laser light source system and laser projection apparatus WO2023005673A1 (en)

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CN113687570B (en) * 2021-07-30 2023-09-08 深圳光峰科技股份有限公司 Laser light source system and laser projection apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103207509A (en) * 2012-01-12 2013-07-17 三菱电机株式会社 Light Source Device And Projecting Display Device
CN104216212A (en) * 2014-09-16 2014-12-17 深圳雅图数字视频技术有限公司 Laser projection device and light source system thereof
JP2018092137A (en) * 2016-11-29 2018-06-14 パナソニックＩｐマネジメント株式会社 Light source device and projection-type image display device
CN208819005U (en) * 2018-09-30 2019-05-03 无锡视美乐激光显示科技有限公司 A kind of light-source system and projector
CN208819007U (en) * 2018-11-03 2019-05-03 苏州乐梦光电科技有限公司 Lighting system
CN213690208U (en) * 2020-12-15 2021-07-13 中强光电股份有限公司 Illumination system and projection device
CN113687570A (en) * 2021-07-30 2021-11-23 深圳光峰科技股份有限公司 Laser light source system and laser projection apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645822B (en) * 2011-11-28 2014-12-10 深圳市光峰光电技术有限公司 Projecting apparatus and control method thereof
CN205982969U (en) * 2016-08-12 2017-02-22 深圳市绎立锐光科技开发有限公司 Light source device and projecting system
CN107479313A (en) * 2017-10-10 2017-12-15 青岛海信电器股份有限公司 A kind of LASER Light Source and projection display apparatus
WO2019124120A1 (en) * 2017-12-20 2019-06-27 ソニー株式会社 Optical unit and projection display device
CN110412818A (en) * 2018-04-28 2019-11-05 中强光电股份有限公司 Lighting system, projection arrangement and its operating method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103207509A (en) * 2012-01-12 2013-07-17 三菱电机株式会社 Light Source Device And Projecting Display Device
CN104216212A (en) * 2014-09-16 2014-12-17 深圳雅图数字视频技术有限公司 Laser projection device and light source system thereof
JP2018092137A (en) * 2016-11-29 2018-06-14 パナソニックＩｐマネジメント株式会社 Light source device and projection-type image display device
CN208819005U (en) * 2018-09-30 2019-05-03 无锡视美乐激光显示科技有限公司 A kind of light-source system and projector
CN208819007U (en) * 2018-11-03 2019-05-03 苏州乐梦光电科技有限公司 Lighting system
CN213690208U (en) * 2020-12-15 2021-07-13 中强光电股份有限公司 Illumination system and projection device
CN113687570A (en) * 2021-07-30 2021-11-23 深圳光峰科技股份有限公司 Laser light source system and laser projection apparatus

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