WO2022100097A1 - 投影光路和投影设备 - Google Patents

投影光路和投影设备 Download PDF

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Publication number
WO2022100097A1
WO2022100097A1 PCT/CN2021/101209 CN2021101209W WO2022100097A1 WO 2022100097 A1 WO2022100097 A1 WO 2022100097A1 CN 2021101209 W CN2021101209 W CN 2021101209W WO 2022100097 A1 WO2022100097 A1 WO 2022100097A1
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WIPO (PCT)
Prior art keywords
light
wavelength
light source
beam splitter
projection
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Application number
PCT/CN2021/101209
Other languages
English (en)
French (fr)
Inventor
龚敬剑
邓杨春
丁卫涛
刘德安
鲁公涛
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to KR1020237019320A priority Critical patent/KR20230104273A/ko
Priority to EP21890628.7A priority patent/EP4246225A1/en
Priority to JP2023528459A priority patent/JP7503210B2/ja
Priority to US18/036,794 priority patent/US20230408898A1/en
Publication of WO2022100097A1 publication Critical patent/WO2022100097A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • 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
    • G03B21/28—Reflectors in projection 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
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • 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
    • G03B21/2013—Plural light sources
    • 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
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection
    • 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

Definitions

  • the present application relates to the technical field of optical display, and in particular, to a projection light path and a projection device.
  • the combination of red, green and blue light is used as the projection light source.
  • the current way to increase the luminous flux is to increase the current of the corresponding power supply, so that the light sources corresponding to the three colors can generate more light.
  • the light source of red light is more sensitive to temperature.
  • the number of red light increases, resulting in a thermal effect, resulting in a sharp drop in the luminous efficiency of the red light source.
  • two red light sources are used to cooperate with each other to reduce the thermal effect produced by the red light source.
  • the luminous efficiency of other color light sources is still low, and it is difficult to effectively improve the overall brightness of the projection image.
  • the projection light path includes:
  • the first dual light source system emits first concentrated light
  • the second dual light source system emits a second condensed light, and the first condensed light and the second condensed light are cross-converged;
  • the first dual light source system includes a first light source and a second light source, the first light source emits light of a first wavelength, the second light source emits light of a second wavelength, and the light of the first wavelength and the light of the second wavelength converge
  • the first concentrated light is formed
  • the second dual light source system includes a third light source and a fourth light source, the third light source emits light of a third wavelength, the fourth light source emits light of a fourth wavelength, and the third light source emits light of a fourth wavelength.
  • the wavelength light and the fourth wavelength light are converged to form the second converged light
  • the first wavelength light, the second wavelength light and the third wavelength light are respectively red light, green light and blue light.
  • the wavelength range of the fourth wavelength light is within the wavelength range of red light
  • the wavelength of the fourth wavelength light is defined as ⁇ 1, the first wavelength light, the second wavelength light, the third wavelength light
  • the wavelength set to red light is ⁇ 2, which satisfies: ⁇ 1 ⁇ 2;
  • excitation light source the excitation light source emits excitation light, and the excitation light is emitted to the first dual light source system or the second dual light source system.
  • the excitation light is directed toward the first dual light source system
  • the first dual light source system includes a green light source
  • the excitation light is directed toward the green light source.
  • the projection light path further includes a first beam splitter, the first beam splitter is arranged at the intersection of the first wavelength light and the second wavelength light, and the excitation light source is arranged at the first wavelength. a side of the beam splitter away from the second light source;
  • the first light source is a green light source, a surface of the first beam splitter facing the excitation light source is provided with a reflective film for the excitation light, and the excitation light is reflected toward the first beam splitter by the first beam splitter. light source;
  • the second light source is a green light source
  • an antireflection film for the excitation light is provided on the surface of the first beam splitter facing the excitation light source, and the excitation light is transmitted toward the second light source.
  • the projection light path further includes a second beam splitter, and the second beam splitter is arranged at a cross-convergence position of the first converged light and the second converged light, the first converged light and the The second condensed light is condensed and emitted through the second beam splitter.
  • the projection light path includes a first light emitting end face, the first light emitting end face is perpendicular to the emitting direction of the first condensed light, and the second beam splitter is arranged facing the incident direction of the first condensed light.
  • the anti-reflection film for the light of the first wavelength and the light of the second wavelength, the second beam splitter facing the incident direction of the second concentrated light is provided with the reflection film of the light of the third wavelength and the light of the fourth wavelength , the first wavelength light and the second wavelength light are transmitted on the second beam splitter, the third wavelength light and the fourth wavelength light are reflected on the second beam splitter, the first wavelength light Light, the second wavelength light, the third wavelength light, and the fourth wavelength light are converged by the second beam splitter, and the converged first wavelength light, the second wavelength light, and the first wavelength light are converged.
  • the three-wavelength light and the fourth-wavelength light are emitted from the first light-emitting end face.
  • the projection light path includes a second light emitting end face, the second light emitting end face is parallel to the emitting direction of the first condensed light, and the second beam splitter is disposed facing the incident direction of the first condensed light.
  • a reflective film for the first wavelength light and the second wavelength light, and the second beam splitter is provided with an antireflection film for the third wavelength light and the fourth wavelength light facing the incident direction of the second concentrated light , the first wavelength light and the second wavelength light are reflected on the second beam splitter, the third wavelength light and the fourth wavelength light are transmitted through the second beam splitter, the first wavelength light Light, the second wavelength light, the third wavelength light, and the fourth wavelength light are converged by the second beam splitter, and the converged first wavelength light, the second wavelength light, and the first wavelength light The third-wavelength light and the fourth-wavelength light are emitted from the second light-emitting end face.
  • the projection light path includes a first condenser and a second condenser, the first condenser is arranged in the exit direction of the first condenser, and the second condenser is arranged at the exit of the second condenser. in the direction.
  • the second light source and the third light source are arranged on the upper side of the exit optical path of the first wavelength light, and the excitation light source is arranged on the lower side of the exit optical path of the first wavelength light.
  • the first wavelength light is green light
  • the second wavelength light is blue light
  • the third wavelength light is red light
  • the second beam splitter faces the first light source with green light and blue light
  • the anti-reflection film, the second beam splitter is provided with a red light reflection film facing the third light source.
  • the excitation light source and the third light source are arranged on the upper side of the exit optical path of the first wavelength light, and the second light source is arranged on the lower side of the exit optical path of the first wavelength light.
  • the present application also provides a projection device, the projection device includes a housing and the above-mentioned projection light path, and the projection light path is provided in the housing.
  • the first converged light emitted by the first dual light source system and the second converged light emitted by the second dual light source system are cross-converged.
  • the first wavelength light, the second wavelength light and the third wavelength light are respectively one of red light, green light and blue light, and the three color lights are combined as the light source of the projection screen.
  • the fourth light source emits light of a fourth wavelength, and the light of the fourth wavelength is converged together with the light of the first wavelength, the light of the second wavelength and the light of the third wavelength.
  • the fourth wavelength light is also red.
  • the red color of the projection light source is provided by two light sources, which reduces the thermal effect of a single red light source and reduces the luminous efficiency. The problem of falling, so as to ensure that the projection light source can work stably.
  • the red wavelength of the fourth wavelength light is different from the wavelength of the red light in the first light source, the second light source or the third light source. Therefore, the projection light path can be divided into multiple transmission paths, which reduces the mutual interference between the fourth wavelength light of the fourth light source and the red light in the other three light sources, and ensures that the light rays are combined at the same position and then emitted.
  • the excitation light emitted by the excitation light source can improve the luminous efficiency of the first dual light source system or the second dual light source system, thereby increasing the number of outgoing light, thereby improving the brightness of the projection image. Further, the first dual light source system and the second dual light source system can be installed independently, thereby saving installation steps.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a projection light path of the present application
  • FIG. 2 is a schematic structural diagram of a second embodiment of a projection light path of the present application.
  • the combination of red, green and blue light is used as the projection light source.
  • the current of the corresponding power supply is usually increased, so that the corresponding light sources of the three colors can generate more light.
  • the light source of red light is more sensitive to temperature.
  • the current increases to a certain extent, the number of red light increases, resulting in a thermal effect.
  • two red light sources are used to cooperate with each other to reduce the thermal effect produced by the red light source.
  • the luminous efficiency of other color light sources is still low, and it is difficult to effectively improve the overall brightness of the projection image.
  • the projection light path includes: a first dual light source system 1 and a second dual light source system 2 .
  • the first dual light source system 1 and the second dual light source system 2 are independent light source components that can be installed independently.
  • the first dual light source system 1 emits the first condensed light
  • the second dual light source system 2 emits the second condensed light
  • the cross-convergence of the first condensed light and the second condensed light is independent light source components that can be installed independently.
  • the first dual light source system 1 includes a first light source 10 and a second light source 20, the first light source 10 emits light of a first wavelength, the second light source 20 emits light of a second wavelength, and the first wavelength light and the second wavelength light converge to form a first light source.
  • the second dual light source system 2 includes a third light source 30 and a fourth light source 40, the third light source 30 emits light of a third wavelength, the fourth light source 40 emits light of a fourth wavelength, and the third wavelength light and the fourth wavelength light converge The second convergent light is formed, and the first wavelength light, the second wavelength light and the third wavelength light are respectively one of red light, green light and blue light.
  • the second wavelength light when the first wavelength light is green light, the second wavelength light may be red light, and the third wavelength light may be blue light, or, when the first wavelength light is green light, the second wavelength light may be blue light, and the third wavelength light may be blue light, and the third wavelength light may be blue light.
  • the wavelength light is red light.
  • the second wavelength light when the first wavelength light is red light, the second wavelength light may be green light, and the third wavelength light may be blue light, or, when the first wavelength light is red light, the second wavelength light may be blue light, and the third wavelength light may be blue light, and the third wavelength light may be blue light.
  • the wavelength light is green light.
  • the second wavelength light when the first wavelength light is blue light, the second wavelength light may be green light, and the third wavelength light may be red light, or, when the first wavelength light is blue light, the second wavelength light may be red light, and the third wavelength light may be red light.
  • the wavelength light is green light.
  • the colors of the first wavelength light, the second wavelength light and the third wavelength light are selected from red light, green light and blue light, and the colors of the three wavelength lights are different from each other.
  • the wavelength range of the fourth wavelength light is within the wavelength range of red light, and the wavelength of the fourth wavelength light is defined as ⁇ 1, and the wavelength of the red light set among the first wavelength light, the second wavelength light, and the third wavelength light is ⁇ 2, Satisfy: ⁇ 1 ⁇ 2.
  • the wavelength range of red light is between 600 nm and 740 nm
  • the first wavelength light is red light
  • the wavelength ⁇ 2 of the first wavelength light is 620 nm
  • the wavelength ⁇ 1 of the fourth wavelength light is 650 nm.
  • the wavelength ⁇ 2 of the light with the first wavelength is 625 nm
  • the wavelength ⁇ 1 of the light with the fourth wavelength is 660 nm.
  • the first light source 10, the second light source 20, the third light source 30 and the fourth light source 40 can be light emitting diodes (LED, Light-emitting Diode), also can be semiconductor lasers (LD, Laser Diode), can also be super Radiation semiconductor device (SLD, Super Luminescent Diode) any of them.
  • LED Light-emitting Diode
  • LD semiconductor lasers
  • SLD super Radiation semiconductor device
  • the excitation light source 50 emits excitation light, and the excitation light is emitted to the first dual light source system 1 or the second dual light source system 2 .
  • the excitation light source 50 is a pump lamp, for example, the excitation light is blue light, and the blue excitation light is emitted to the first dual light source system 1 or the second dual light source system 2, thereby increasing the fluorescent molecules of the corresponding light source, and then increasing the light of the corresponding light source. Number of shots.
  • the light emitted by any light source is a light beam with a certain wavelength range
  • the first wavelength light in this application refers to the light beam with the first wavelength as the main wavelength
  • the wavelength of the first wavelength light in this application refers to the dominant wavelength of the first wavelength light.
  • the second wavelength light, the third wavelength light, and the fourth wavelength light can also be understood as the central wavelength.
  • the first converged light emitted by the first dual light source system 1 and the second converged light emitted by the second dual light source system 2 are cross-converged.
  • the first wavelength light, the second wavelength light and the third wavelength light are respectively one of red light, green light and blue light, and the three color lights are combined as the light source of the projection screen.
  • the fourth light source 40 emits light of a fourth wavelength, and the light of the fourth wavelength is converged together with the light of the first wavelength, the light of the second wavelength and the light of the third wavelength.
  • the fourth wavelength light is also red.
  • the red color of the projection light source is provided by two light sources, which reduces the thermal effect of a single red light source and reduces the luminous efficiency. The problem of falling, so as to ensure that the projection light source can work stably.
  • the red wavelength of the fourth wavelength light is different from the wavelength of the red light in the first light source 10 , the second light source 20 or the third light source 30 . Therefore, the projection light path can be divided into multiple transmission paths, which reduces the mutual interference between the fourth wavelength light of the fourth light source 40 and the red light in the other three light sources, and ensures that the light rays are combined at the same position and then exit.
  • the excitation light emitted by the excitation light source 50 can improve the luminous efficiency of the first dual light source system 1 or the second dual light source system 2 , thereby increasing the number of outgoing light rays, thereby improving the brightness of the projection image. Further, the first dual light source system 1 and the second dual light source system 2 can be installed independently, thereby saving installation steps.
  • the excitation light is directed to the first dual light source system 1
  • the first dual light source system 1 includes a green light source
  • the first light source 10 is green light
  • the excitation light is directed to the first light source 10
  • the second light source 20 is green light
  • the excitation light is emitted to the second light source 20 .
  • the fluorescent molecules of the green light source can be increased. From this, it can be seen that the excitation light is directed to the green light source.
  • the projection light path further includes a first beam splitter 710, and the first beam splitter 710 is arranged on the first wavelength light and the second wavelength light.
  • the excitation light source 50 is arranged on the side of the first beam splitter 710 away from the second light source 20;
  • the first light source 10 is a green light source, the surface of the first beam splitter 710 facing the excitation light source 50 is provided with a reflective film for excitation light, and the excitation light is reflected to the first light source 10 by the first beam splitter 710; Reflected by the beam splitter 710 , after the excitation light of blue light is emitted to the first light source 10 , the fluorescent molecules of the green light are increased, thereby increasing the amount of light emitted by the green light.
  • the second light source 20 is a green light source
  • an antireflection film for excitation light is provided on the surface of the first beam splitter 710 facing the excitation light source 50 , and the excitation light is transmitted to the second light source 20 .
  • the fluorescent molecules of the green light are increased, thereby increasing the quantity of light emitted by the green light.
  • the projection light path further includes a second beam splitter 720, and the second beam splitter 720 is arranged at the intersection of the first condensed light and the second condensed light.
  • the first condensed light and the second condensed light are condensed and emitted through the second beam splitter 720 .
  • the second beam splitter 720 Through the transmission or reflection of the first condensed light and the second condensed light by the second beam splitter 720 , it is ensured that the first condensed light and the second condensed light are emitted from the same light exit direction.
  • the second dual light source system 2 further includes a third beam splitter 730, the optical paths of the third wavelength light and the fourth wavelength light intersect, and the third beam splitter
  • the sheet 730 is provided at the intersection of the third wavelength light and the fourth wavelength light.
  • the third wavelength light and the fourth wavelength light are converged by the transmission or reflection of the third wavelength light by the third beam splitter 730 and the transmission or reflection of the fourth wavelength light by the third beam splitter 730 .
  • the third beam splitter 730 is provided with an antireflection film for the third wavelength light facing the third light source 30
  • the third beam splitter 730 is provided with a reflective film for the fourth wavelength light facing the fourth light source 40
  • the anti-reflection coating for the third wavelength light can increase the transmittance of the third wavelength light
  • the reflective coating for the fourth wavelength light can improve the reflectivity for the fourth wavelength light, so that the third wavelength light and the fourth wavelength light are separated by the third wavelength.
  • the same surface of the beam splitter 730 is emitted, so that the light of the third wavelength and the light of the fourth wavelength are converged into the second converged light.
  • the anti-reflection film for the third wavelength light and the reflection film for the fourth wavelength light may be disposed on the same surface of the third beam splitter 730 , or may be disposed on two surfaces of the third beam splitter 730 .
  • the projection light path includes the first light exit end face 910, the first light exit end face 910 is perpendicular to the exit direction of the first condensed light, and the second beam splitter 720 faces the incident direction of the first condensed light to set the first wavelength light and the second light beam.
  • the second beam splitter 720 is provided with a reflective film for the third wavelength light and the fourth wavelength light facing the incident direction of the second concentrated light, and the first wavelength light and the second wavelength light are transmitted through the second beam splitter 720, the light of the third wavelength and the light of the fourth wavelength are reflected on the second beam splitter 720, the light of the first wavelength, the light of the second wavelength, the light of the third wavelength and the light of the fourth wavelength are converged by the second beam splitter 720, and the converged first The wavelength light, the second wavelength light, the third wavelength light and the fourth wavelength light are emitted from the first light exit end face 910 .
  • the first condensed light and the second condensed light are effectively condensed.
  • the anti-reflection films for the first wavelength light and the second wavelength light, and the reflective films for the third wavelength light and the fourth wavelength light may be arranged on the same surface of the second beam splitter 720, or may be separately arranged on the second beam splitter 720 of the two surfaces.
  • the projection light path includes a second light exit end face 920, the second light exit end face 920 is parallel to the exit direction of the first condensed light, and the second beam splitter 720 faces the incident direction of the first condensed light.
  • the second beam splitter 720 is provided with an anti-reflection film for light of the third wavelength and light of the fourth wavelength facing the incident direction of the second concentrated light, and the light of the first wavelength and the light of the second wavelength are reflected
  • the third wavelength light and the fourth wavelength light are transmitted through the second beam splitter 720
  • the first wavelength light, the second wavelength light, the third wavelength light and the fourth wavelength light are converged by the second beam splitter 720
  • the converged light of the first wavelength, the light of the second wavelength, the light of the third wavelength and the light of the fourth wavelength are emitted from the second light-emitting end face 920 .
  • the reflective films for the first wavelength light and the second wavelength light, and the antireflection films for the third wavelength light and the fourth wavelength light may be disposed on the same surface of the second beam splitter 720, or may be separately disposed on the second beam splitter 720 of the two surfaces.
  • the projection light path includes a first condensing mirror 810 and a second condensing mirror 820.
  • the first condensing mirror 810 is disposed in the exit direction of the first condensing light
  • the second condensing mirror 820 is disposed in the exiting direction of the second condensing light.
  • the light of the first wavelength and the light of the second wavelength can be gathered and converged by the condensing function of the first condenser lens 810 , and the divergence of the first converged light can also be reduced while the light of the first wavelength and the light of the second wavelength are further mixed.
  • the projection light path further includes a second condenser mirror 820, the second condenser mirror 820, the third wavelength light and the fourth wavelength light converged toward the second condenser mirror 820, through the condensing effect of the second condenser mirror 820.
  • the condensed third wavelength light and the fourth wavelength light can be converged, thereby reducing the divergence of light.
  • the projection light path includes a plurality of collimating lens groups 60, and the collimating lens groups 60 are arranged at least in the light emitting direction of one of the first light source 10, the second light source 20, the third light source 30 or the fourth light source 40.
  • the straight lens group 60 can make the corresponding light beam to the corresponding position accurately.
  • the collimating lens group 60 includes a first collimating lens 610 and a second collimating lens 620, the first collimating lens 610 is disposed facing the corresponding light source, the second accurate lens is disposed facing away from the corresponding light source, and the first collimating lens 610 and the second collimating lens 620 are any one of spherical lenses, aspherical lenses or free-form surface lenses.
  • the collimating lens group 60 may further include three collimating lenses, and the three collimating lenses may also be any one of spherical lenses, aspherical lenses or free-form surface lenses.
  • the second light source 20 and the third light source 30 are arranged on the upper side of the exit light path of the first wavelength light, and the excitation light source 50 is arranged on the first light source.
  • the wavelength light exits the lower side of the optical path.
  • the emission directions of the second light source 20 and the third light source 30 are in the same direction, the emission directions of the excitation light source 50 and the third light source 30 are opposite, and the emission direction of the fourth light source 40 is perpendicular to the third light source 30 exit direction.
  • the first wavelength light is green light
  • the second wavelength light is blue light
  • the third wavelength light is red light
  • a reflective film for red light is provided facing the third light source 30 .
  • the wavelength ranges of green light and blue light are close, and a higher pass rate can be obtained through the first beam splitter 710 .
  • the third wavelength light and the fourth wavelength light are both red light, although the wavelengths of the two are different, but the wavelength range is close, and a higher reflectivity can be obtained through the first beam splitter 710 .
  • the first dual light source system 1 includes a green light source and a blue light source
  • the second dual light source system 2 includes two red light sources with different wavelengths, which can further improve the light output.
  • the excitation light source 50 and the third light source 30 are arranged on the upper side of the exit optical path of the first wavelength light, and the second light source 20 is arranged on the lower side of the exit optical path of the first wavelength light.
  • the exit directions of the second light source 20 and the third light source 30 are opposite, the exit directions of the excitation light source 50 and the third light source 30 are the same, and the exit direction of the fourth light source 40 is perpendicular to the third light source 30 exit direction.
  • the fourth light source 40 and the first light source 10 may be disposed on the left side of the exit light path of the third wavelength light.
  • the fourth light source 40 may be disposed on the right side of the exit optical path of the third wavelength light
  • the first light source 10 may be disposed on the left side of the exit optical path of the third wavelength light.
  • the present application also provides a projection device, the projection device includes a housing and a projection light path as above, and the projection light path is provided in the housing.
  • the housing has an installation space, and the projection light path is arranged in the installation space.
  • the housing can protect the projection light path and reduce the probability of damage to the optical components in the projection light path.
  • the housing can also prevent dust from falling into the projection light path, thereby reducing the influence of dust on the projection light path.
  • the casing is also waterproof, which reduces the penetration of liquids such as rainwater or sweat into the projection light path, and prevents the liquid from corroding optical components in the projection light path.
  • a software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.
  • RAM random access memory
  • ROM read only memory
  • electrically programmable ROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.
  • the terms “connected”, “fixed” and the like should be understood in a broad sense, for example, “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
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Abstract

一种投影光路和投影设备，投影光路包括第一双光源系统（1）的第一汇聚光和第二双光源系统（2）的第二汇聚光，第一波长光、第二波长光和第三波长光分别为红光、绿光和蓝光三者其中一种，第四波长光的波长范围为红光的波长范围内，定义第四波长光的波长为λ1，第一波长光、第二波长光、第三波长光之中设置为红光的波长为λ2，满足：λ1≠λ2，激发光源（50）发出激发光线，激发光线射向第一双光源系统（1）或第二双光源系统（2）。投影光路和投影设备的技术方案能够减少红光光源产生的热效应同时，还能够提高其它颜射光源的发光效率，从而有效提升整体显示画面的亮度。

Description

投影光路和投影设备
本申请要求于2020年11月13日提交中国专利局、申请号为202022637807.X、发明名称为“投影光路和投影设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及光学显示技术领域，尤其涉及一种投影光路和投影设备。
背景技术
在光学投影显示中，采用红绿蓝三种颜色的光组合作为投影光源，为了提高投影画面的亮度，需要增加相应颜色的光线数量，即增加光通量。目前增加光通量的方式是提高相应电源的电流，由此三种颜色相应的光源能够产生更多的光线。但是红光的光源对温度较为敏感，当电流增大到一定程度时，红色光线数量增多，由此产生热效应，导致红光光源的发光效率骤降。为此，采用两种红光光源相互配合，减少红光光源产生的热效应。但是，其它颜色光源的发光效率依然较低，投影画面的整体亮度难以有效提高。
发明内容
基于此，针对现有投影光源中，采用两种红光光源相互配合，减少红光光源产生的热效应时，其它颜射光源的发光效率较低，投影画面的整体亮度难以有效提高的问题，有必要提供一种投影光路和投影设备，旨在能够减少红光光源产生的热效应同时，还能够提高其它颜射光源的发光效率，从而有效提升整体显示画面的亮度。
为实现上述目的，本申请提出的一种投影光路，所述投影光路包括：
第一双光源系统，所述第一双光源系统发射第一汇聚光；
第二双光源系统，所述第二双光源系统发射第二汇聚光，所述第一汇聚光和所述第二汇聚光交叉汇聚；
所述第一双光源系统包括第一光源和第二光源，第一光源发射第一波长光，所述第二光源发射第二波长光，所述第一波长光和所述第二波长光汇聚形成所述第一汇聚光，所述第二双光源系统包括第三光源和第四光源，所述第三光源发射第三波长光，所述第四光源发射第四波长光，所述第三波长光和所述第四波长光汇聚形成所述第二汇聚光，所述第一波长光、所述第二波长光和所述第三波长光分别为红光、绿光和蓝光三者其中一种，所述第四波长光的波长范围为红光的波长范围内，定义所述第四波长光的波长为λ1，所述第一波长光、所述第二波长光、所述第三波长光之中设置为红光的波长为λ2，满足：λ1≠λ2；以及
激发光源，所述激发光源发出激发光线，所述激发光线射向所述第一双光源系统或所述第二双光源系统。
可选地，所述激发光线射向所述第一双光源系统，所述第一双光源系统包括绿光光源，所述激发光线射向所述绿光光源。
可选地，所述投影光路还包括第一分光片，所述第一分光片设于所述第一波长光和所述第二波长光的交叉位置，所述激发光源设于所述第一分光片远离所述第二光源的一侧；
所述第一光源为绿光光源，所述第一分光片面向所述激发光源的表面设置所述激发光线的反射膜，所述激发光线经所述第一分光片的反射向所述第一光源；
或者，所述第二光源为绿光光源，所述第一分光片面向所述激发光源的表面设置所述激发光线的增透膜，所述激发光线透射向所述第二光源。
可选地，所述投影光路还包括第二分光片，所述第二分光片设于所述第一汇聚光和所述第二汇聚光的交叉汇聚位置，所述第一汇聚光和所述第二汇聚光经所述第二分光片汇聚出射。
可选地，所述投影光路包括第一出光端面，所述第一出光端面和所述第一汇聚光的出射方向垂直，所述第二分光片面向所述第一汇聚光的入射方向设置所述第一波长光和所述第二波长光的增透膜，所述第二分光片面向所述第二汇聚光的入射方向设置所述第三波长光和所述第四波长光的反射膜，所述第一波长光和所述第二波长光透射于所述第二分光片，所述第三波长光和所述第四波长光反射于所述第二分光片，所述第一波长光、所述第二波长光、 所述第三波长光和所述第四波长光经所述第二分光片汇聚，汇聚的所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光于所述第一出光端面射出。
可选地，所述投影光路包括第二出光端面，所述第二出光端面和所述第一汇聚光的出射方向平行，所述第二分光片面向所述第一汇聚光的入射方向设置所述第一波长光和所述第二波长光的反射膜，所述第二分光片面向所述第二汇聚光的入射方向设置所述第三波长光和所述第四波长光的增透膜，所述第一波长光和所述第二波长光反射于所述第二分光片，所述第三波长光和所述第四波长光透射于所述第二分光片，所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光经所述第二分光片汇聚，汇聚的所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光于所述第二出光端面射出。
可选地，所述投影光路包括第一聚光镜和第二聚光镜，所述第一聚光镜设于所述第一汇聚光的出射方向中，所述第二聚光镜设于所述第二汇聚光的出射方向中。
可选地，所述第二光源和所述第三光源设于所述第一波长光出射光路的上侧，所述激发光源设于所述第一波长光出射光路的下侧。
可选地，所述第一波长光为绿光，所述第二波长光为蓝光，所述第三波长光为红光，所述第二分光片面向所述第一光源设置绿光和蓝光的增透膜，所述第二分光片面向第三光源设置红光的反射膜。
可选地，所述激发光源和所述第三光源设于所述第一波长光出射光路的上侧，所述第二光源设于所述第一波长光出射光路的下侧。
此外，为了实现上述目的，本申请还提供一种投影设备，所述投影设备包括壳体和如上文所述的投影光路，所述投影光路设于所述壳体。
本申请提出的技术方案中，第一双光源系统发出的第一汇聚光和第二双光源系统发射的第二汇聚光交叉汇聚。第一波长光、第二波长光和第三波长光分别为红光、绿光和蓝光其中一种，三种颜色光结合作为投影画面的光源。第四光源发出第四波长光，第四波长光与第一波长光、第二波长光和第三波 长光一同汇聚。第四波长光也为红色，如此，通过第四波长光的汇聚加入，在增加投影画面亮度时，投影光源的红色由两个光源提供，减少单个红光光源出现热效应的情况，减少发光效率骤降的问题，从而保证投影光源能够稳定工作。
此外，第四波长光的红色波长与第一光源、第二光源或第三光源中红光的波长不同。由此投影光路能够分成多路传递，减少第四光源的第四波长光和另外三种光源中红光的相互干扰，保证光线在同一个位置合光后出射。
进一步地，激发光源发射的激发光线能够提高第一双光源系统或第二双光源系统的发光效率，从而提高光线的出射数量，继而提高投影画面的亮度。进一步地，第一双光源系统和第二双光源系统能够独立安装，从而节省安装步骤。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一部分附图，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本申请投影光路第一实施例的结构示意图；
图2为本申请投影光路第二实施例的结构示意图。
附图标号说明：
标号 名称 标号 名称
1 第一双光源系统 620 第二准直透镜
2 第二双光源系统 710 第一分光片
10 第一光源 720 第二分光片
20 第二光源 730 第三分光片
30 第三光源 810 第一聚光镜
40 第四光源 820 第二聚光镜
50 激发光源 910 第一出光端面
60 准直镜组 920 第二出光端面
610 第一准直透镜    
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在光学投影显示中，采用红绿蓝三种颜色的光组合作为投影光源，为了提高投影画面的亮度，通常增加相应电源的电流，由此三种颜色相应的光源能够产生更多的光线。但是红光的光源对温度较为敏感，当电流增大到一定程度时，红色光线数量增多，由此产生热效应。为此，采用两种红光光源相互配合，减少红光光源产生的热效应。但是，其它颜色光源的发光效率依然较低，投影画面的整体亮度难以有效提高。
为了解决上述问题，参阅图1所示，本申请提供一种投影光路，投影光路包括：第一双光源系统1和第二双光源系统2。第一双光源系统1和第二双光源系统2为独立的光源部件，可以单独进行安装。第一双光源系统1发射第一汇聚光，第二双光源系统2发射第二汇聚光，第一汇聚光和第二汇聚光的交叉汇聚。
第一双光源系统1包括第一光源10和第二光源20，第一光源10发射第一波长光，第二光源20发射第二波长光，第一波长光和第二波长光汇聚形成第一汇聚光，第二双光源系统2包括第三光源30和第四光源40，第三光源30发射第三波长光，第四光源40发射第四波长光，第三波长光和第四波长光汇聚形成第二汇聚光，第一波长光、第二波长光和第三波长光分别为红光、绿光和蓝光三者其中一种。也就是说，第一波长光为绿光时、第二波长光可以为红光、第三波长光为蓝光，或者，第一波长光为绿光时、第二波长光可以为蓝光、第三波长光为红光。也可以是，第一波长光为红光时、第二波长光可以为绿光、第三波长光为蓝光，或者，第一波长光为红光时、第二波长光可以为蓝光、第三波长光为绿光。还可以是，第一波长光为蓝光时、第二波长光可以 为绿光、第三波长光为红光，或者，第一波长光为蓝光时、第二波长光可以为红光、第三波长光为绿光。第一波长光、第二波长光和第三波长光三种光的颜色在红光、绿光和蓝光三者之中选择，且三种波长光的颜色各不相同。第四波长光的波长范围为红光的波长范围内，定义第四波长光的波长为λ1，第一波长光、第二波长光、第三波长光之中设置为红光的波长为λ2，满足：λ1≠λ2。例如，红光的波长范围在600nm～740nm之间，第一波长光为红光，第一波长光的波长λ2＝620nm，则第四波长光的波长λ1＝650nm。再例如，第一波长光的波长λ2＝625nm，则第四波长光的波长λ1＝660nm。
其中，第一光源10、第二光源20、第三光源30和第四光源40可以为发光二极管(LED，Light-emitting Diode)，也可以是半导体激光器(LD，Laser Diode)，还可以是超辐射半导体器件(SLD，Super Luminescent Diode)其中任意一种。
激发光源50发出激发光线，激发光线射向第一双光源系统1或第二双光源系统2。激发光源50是一种泵浦灯，例如激发光线为蓝光，蓝色激发光线射向第一双光源系统1或第二双光源系统2，从而提高相应光源的荧光分子，继而提高相应光源的光线出射数量。
另外，作为本领域的技术人员来说，所熟知的是，任何光源发出的光都是具有一定波长范围的光束，故本申请中第一波长光是指以第一波长为主波长的光束，本申请中的第一波长光的波长指的是第一波长光的主波长。相应的，第二波长光、第三波长光、第四波长光亦是如此。其中，主波长也可以理解为中心波长。
本实施例提出的技术方案中，第一双光源系统1发出的第一汇聚光和第二双光源系统2发射的第二汇聚光交叉汇聚。第一波长光、第二波长光和第三波长光分别为红光、绿光和蓝光其中一种，三种颜色光结合作为投影画面的光源。第四光源40发出第四波长光，第四波长光与第一波长光、第二波长光和第三波长光一同汇聚。第四波长光也为红色，如此，通过第四波长光的汇聚加入，在增加投影画面亮度时，投影光源的红色由两个光源提供，减少单个红光光源出现热效应的情况，减少发光效率骤降的问题，从而保证投影光源能够稳定工作。
此外，第四波长光的红色波长与第一光源10、第二光源20或第三光源30 中红光的波长不同。由此投影光路能够分成多路传递，减少第四光源40的第四波长光和另外三种光源中红光的相互干扰，保证光线在同一个位置合光后出射。
进一步地，激发光源50发射的激发光线能够提高第一双光源系统1或第二双光源系统2的发光效率，从而提高光线的出射数量，继而提高投影画面的亮度。进一步地，第一双光源系统1和第二双光源系统2能够独立安装，从而节省安装步骤。
在上述实施例中，激发光线射向第一双光源系统1，第一双光源系统1包括绿光光源，第一光源10为绿光，激发光线射向第一光源10；或者，第二光源20为绿光，激发光线射向第二光源20。激发光线射向绿光光源后，能够增加绿光光源的荧光分子。由此可知，激发光线射向绿光光源。
在上述实施例中，为了保证激发光线能够准确的射向第一光源10或第二光源20，投影光路还包括第一分光片710，第一分光片710设于第一波长光和第二波长光的交叉位置，激发光源50设于第一分光片710远离第二光源20的一侧；
第一光源10为绿光光源，第一分光片710面向激发光源50的表面设置激发光线的反射膜，激发光线经第一分光片710的反射向第一光源10；激发光线为蓝光，经过第一分光片710的反射，蓝光的激发光线射向第一光源10后，提高了绿光的荧光分子，从而提高了绿光的出光数量。
或者是，第二光源20为绿光光源，第一分光片710面向激发光源50的表面设置激发光线的增透膜，激发光线透射向第二光源20。经过第一分光片710的透射，蓝光的激发光线射向第二光源20后，提高了绿光的荧光分子，从而提高了绿光的出光数量。
在上述实施例中，为了使第一汇聚光和第二汇聚光有效汇聚，投影光路还包括第二分光片720，第二分光片720设于第一汇聚光和第二汇聚光的交叉汇聚位置，第一汇聚光和第二汇聚光经第二分光片720汇聚出射。通过第二分光片720对第一汇聚光和第二汇聚光的透射或反射，保证第一汇聚光和第二汇聚光由同一个出光方向射出。
在上述实施例中，为了使第三波长光和第四波长光有效汇聚，第二双光源系统2还包括第三分光片730，第三波长光和第四波长光的光路交叉，第三 分光片730设于第三波长光和第四波长光的交叉位置。通过第三分光片730对第三波长光的透射或反射，以及第三分光片730对第四波长光的透射或反射使第三波长光和第四波长光汇聚。
具体地，第三分光片730面向第三光源30设置第三波长光的增透膜，第三分光片730面向第四光源40设置第四波长光的反射膜。第三波长光的增透膜能够增加第三波长光的透过率，第四波长光的反射膜能够提高第四波长光的反射率，从而使第三波长光和第四波长光由第三分光片730的同一个表面出射，从而使第三波长光和第四波长光汇聚为第二汇聚光。其中，第三波长光的增透膜和第四波长光的反射膜可以设置在第三分光片730的同一表面，也可分设在第三分光片730的两个表面。
在上述实施例中，投影光路包括第一出光端面910，第一出光端面910和第一汇聚光的出射方向垂直，第二分光片720面向第一汇聚光的入射方向设置第一波长光和第二波长光的增透膜，第二分光片720面向第二汇聚光的入射方向设置第三波长光和第四波长光的反射膜，第一波长光和第二波长光透射于第二分光片720，第三波长光和第四波长光反射于第二分光片720，第一波长光、第二波长光、第三波长光和第四波长光经第二分光片720汇聚，汇聚的第一波长光、第二波长光、第三波长光和第四波长光于第一出光端面910射出。从而完成，第一汇聚光和第二汇聚光有效汇聚。其中，第一波长光和第二波长光的增透膜、以及第三波长光和第四波长光的反射膜可以设置在第二分光片720的同一表面，也可以分设在第二分光片720的两个表面。
此外，本申请还提供另一实施例，投影光路包括第二出光端面920，第二出光端面920和第一汇聚光的出射方向平行，第二分光片720面向第一汇聚光的入射方向设置第一波长光和第二波长光的反射膜，第二分光片720面向第二汇聚光的入射方向设置第三波长光和第四波长光的增透膜，第一波长光和第二波长光反射于第二分光片720，第三波长光和第四波长光透射于第二分光片720，第一波长光、第二波长光、第三波长光和第四波长光经第二分光片720汇聚，汇聚的第一波长光、第二波长光、第三波长光和第四波长光于第二出光端面920射出。同样也完成第一汇聚光和第二汇聚光有效汇聚。其中，第一波长光和第二波长光的反射膜、以及第三波长光和第四波长光的增透膜可以设置在第二分光片720的同一表面，也可以分设在第二分光片720的两个表面。
为了减少光线的发散，投影光路包括第一聚光镜810和第二聚光镜820，第一聚光镜810设于第一汇聚光的出射方向中，第二聚光镜820设于第二汇聚光的出射方向中。通过第一聚光镜810的聚光作用能够使第一波长光和第二波长光收拢会聚，在进一步混合第一波长光和第二波长光的同时，还能够减少第一汇聚光的发散。进一步地，为了减少光线的发散，投影光路还包括第二聚光镜820，第二聚光镜820，汇聚的第三波长光和第四波长光射向第二聚光镜820，通过第二聚光镜820的聚光作用能够使汇聚的第三波长光和第四波长光收拢会聚，从而减少光线的发散。
再者，投影光路包括若干准直镜组60，准直镜组60至少设于第一光源10、第二光源20、第三光源30或第四光源40其中之一的出光方向中，通过准直镜组60能够使相应的光线准确的射向相应的位置。例如，准直镜组60包括第一准直透镜610和第二准直透镜620，第一准直透镜610面向相应的光源设置，第二准确透镜背向相应的光源设置，第一准直透镜610和第二准直透镜620为球面透镜、非球面透镜或自由曲面透镜的其中任意一种。准直镜组60还可以包括三个准直透镜，三个准直透镜也可以为球面透镜、非球面透镜或自由曲面透镜的其中任意一种。
再次参阅图1所示，为了依据安装空间，灵活的调整投影光路的安装位置，第二光源20和第三光源30设于第一波长光出射光路的上侧，激发光源50设于第一波长光出射光路的下侧。此时，第二光源20和第三光源30的出射方向是同向的，激发光源50和第三光源30的出射方向是反向的，第四光源40的出射方向垂直于所述第三光源30的出射方向。
例如，第一波长光为绿光，第二波长光为蓝光，第三波长光为红光，第一分光片710面向第一光源10设置绿光和蓝光的增透膜，第一分光片710面向第三光源30设置红光的反射膜。绿光和蓝光的波长范围接近，通过第一分光片710能够获得更高的通过率。同样可知，第三波长光和第四波长光均为红光，虽然二者波长不同，但是波长范围接近，通过第一分光片710能够获得更高的反射率。由此可知，第一双光源系统1包括绿光光源和蓝光光源，第二双光源系统2包括两个波长不同的红光光源，如此能够进一步提高出光量。
参阅图2所示，激发光源50和第三光源30设于第一波长光出射光路的上侧，第二光源20设于第一波长光出射光路的下侧。此时，第二光源20和第三 光源30的出射方向是反向的，激发光源50和第三光源30的出射方向是同向的，第四光源40的出射方向垂直于所述第三光源30的出射方向。另外，第四光源40和第一光源10可以设于第三波长光出射光路的左侧。也可以是，第四光源40设于第三波长光出射光路的右侧，第一光源10设于第三波长光出射光路的左侧。
本申请还提供一种投影设备，投影设备包括壳体和如上文的投影光路，投影光路设于壳体。壳体具有安装空间，投影光路设置在安装空间内，壳体能够对投影光路进行保护，减少投影光路中的光学元器件被损坏的几率。同时，壳体还能够防止灰尘落入到投影光路内，从而减少灰尘对投影光路的影响。另外，壳体还能够防水，减少雨水或者汗水等液体渗入到投影光路内，避免液体对投影光路内的光学元器件造成腐蚀。
本说明书中各个实施例采用并列或者递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同或相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处可参见方法部分说明。
本领域普通技术人员还可以理解，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗 示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
另外，在本申请中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。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申请中的具体含义。
另外，本申请各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。

Claims (11)

  1. 一种投影光路，其特征在于，所述投影光路包括：
    第一双光源系统，所述第一双光源系统发射第一汇聚光；
    第二双光源系统，所述第二双光源系统发射第二汇聚光；
    所述第一汇聚光和所述第二汇聚光汇聚；
    所述第一双光源系统包括第一光源和第二光源，第一光源发射第一波长光，所述第二光源发射第二波长光，所述第一波长光和所述第二波长光汇聚形成所述第一汇聚光；
    所述第二双光源系统包括第三光源和第四光源，所述第三光源发射第三波长光，所述第四光源发射第四波长光，所述第三波长光和所述第四波长光汇聚形成所述第二汇聚光；
    所述第一波长光、所述第二波长光和所述第三波长光分别为红光、绿光和蓝光三者其中一种，所述第四波长光的波长范围为红光的波长范围内，定义所述第四波长光的波长为λ1，所述第一波长光、所述第二波长光、所述第三波长光之中设置为红光的波长为λ2，满足：λ1≠λ2；以及
    激发光源，所述激发光源发出激发光线，所述激发光线射向所述第一双光源系统或所述第二双光源系统。
  2. 如权利要求1所述的投影光路，其特征在于，所述激发光线射向所述第一双光源系统，所述第一双光源系统包括绿光光源，所述激发光线射向所述绿光光源。
  3. 如权利要求2所述的投影光路，其特征在于，所述投影光路还包括第一分光片，所述第一分光片设于所述第一波长光和所述第二波长光的交叉位置，所述激发光源设于所述第一分光片远离所述第二光源的一侧；
    所述第一光源为绿光光源，所述第一分光片面向所述激发光源的表面设置所述激发光线的反射膜，所述激发光线经所述第一分光片的反射向所述第一光源；
    或者，所述第二光源为绿光光源，所述第一分光片面向所述激发光源的表面设置所述激发光线的增透膜，所述激发光线透射向所述第二光源。
  4. 如权利要求1所述的投影光路，其特征在于，所述投影光路还包括第二分光片，所述第二分光片设于所述第一汇聚光和所述第二汇聚光的交叉汇聚位置，所述第一汇聚光和所述第二汇聚光经所述第二分光片汇聚出射。
  5. 如权利要求4所述的投影光路，其特征在于，所述投影光路包括第一出光端面，所述第一出光端面和所述第一汇聚光的出射方向垂直，所述第二分光片面向所述第一汇聚光的入射方向设置所述第一波长光和所述第二波长光的增透膜，所述第二分光片面向所述第二汇聚光的入射方向设置所述第三波长光和所述第四波长光的反射膜，所述第一波长光和所述第二波长光透射于所述第二分光片，所述第三波长光和所述第四波长光反射于所述第二分光片，所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光经所述第二分光片汇聚，汇聚的所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光于所述第一出光端面射出。
  6. 如权利要求4所述的投影光路，其特征在于，所述投影光路包括第二出光端面，所述第二出光端面和所述第一汇聚光的出射方向平行，所述第二分光片面向所述第一汇聚光的入射方向设置所述第一波长光和所述第二波长光的反射膜，所述第二分光片面向所述第二汇聚光的入射方向设置所述第三波长光和所述第四波长光的增透膜，所述第一波长光和所述第二波长光反射于所述第二分光片，所述第三波长光和所述第四波长光透射于所述第二分光片，所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光经所述第二分光片汇聚，汇聚的所述第一波长光、所述第二波长光、所述第三波长光和所述第四波长光于所述第二出光端面射出。
  7. 如权利要求1所述的投影光路，其特征在于，所述投影光路包括第一聚光镜和第二聚光镜，所述第一聚光镜设于所述第一汇聚光的出射方向中，所述第二聚光镜设于所述第二汇聚光的出射方向中。
  8. 如权利要求1至7中任一项所述的投影光路，其特征在于，所述第二 光源和所述第三光源设于所述第一波长光出射光路的上侧，所述激发光源设于所述第一波长光出射光路的下侧。
  9. 如权利要求8所述的投影光路，其特征在于，所述第一波长光为绿光，所述第二波长光为蓝光，所述第三波长光为红光，所述第二分光片面向所述第一光源设置绿光和蓝光的增透膜，所述第二分光片面向第三光源设置红光的反射膜。
  10. 如权利要求1至7中任一项所述的投影光路，其特征在于，所述激发光源和所述第三光源设于所述第一波长光出射光路的上侧，所述第二光源设于所述第一波长光出射光路的下侧。
  11. 一种投影设备，其特征在于，所述投影设备包括壳体和如权利要求1至9中任一项所述的投影光路，所述投影光路设于所述壳体。
PCT/CN2021/101209 2020-11-13 2021-06-21 投影光路和投影设备 WO2022100097A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105474073A (zh) * 2013-08-26 2016-04-06 罗伯特·博世有限公司 光源装置、尤其在微镜装置中使用的光源装置
KR20170133936A (ko) * 2016-05-27 2017-12-06 에스케이텔레콤 주식회사 광원 장치 및 이를 포함하는 영상투사장치
CN108415212A (zh) * 2018-03-23 2018-08-17 杭州有人光电技术有限公司 一种led和激光光源构成的投影照明系统
CN211289937U (zh) * 2019-11-12 2020-08-18 深圳市绎立锐光科技开发有限公司 光源装置及照明系统
CN112305845A (zh) * 2020-11-13 2021-02-02 歌尔光学科技有限公司 投影光路和投影设备
CN213457629U (zh) * 2020-11-13 2021-06-15 歌尔光学科技有限公司 投影光路和投影设备
CN113031292A (zh) * 2019-12-24 2021-06-25 翟金会 多通道高亮度光学引擎设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010286521A (ja) 2009-06-09 2010-12-24 Mitsubishi Electric Corp 映像表示装置
CN207992666U (zh) 2018-03-23 2018-10-19 杭州有人光电技术有限公司 一种led和激光光源构成的投影照明系统
CN111458891A (zh) 2020-05-07 2020-07-28 青岛海泰新光科技股份有限公司 一种实现多通道合色光源的组合式方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105474073A (zh) * 2013-08-26 2016-04-06 罗伯特·博世有限公司 光源装置、尤其在微镜装置中使用的光源装置
KR20170133936A (ko) * 2016-05-27 2017-12-06 에스케이텔레콤 주식회사 광원 장치 및 이를 포함하는 영상투사장치
CN108415212A (zh) * 2018-03-23 2018-08-17 杭州有人光电技术有限公司 一种led和激光光源构成的投影照明系统
CN211289937U (zh) * 2019-11-12 2020-08-18 深圳市绎立锐光科技开发有限公司 光源装置及照明系统
CN113031292A (zh) * 2019-12-24 2021-06-25 翟金会 多通道高亮度光学引擎设备
CN112305845A (zh) * 2020-11-13 2021-02-02 歌尔光学科技有限公司 投影光路和投影设备
CN213457629U (zh) * 2020-11-13 2021-06-15 歌尔光学科技有限公司 投影光路和投影设备

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