WO2023231449A1 - 匀光组件、投影光机及投影设备 - Google Patents

匀光组件、投影光机及投影设备 Download PDF

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Publication number
WO2023231449A1
WO2023231449A1 PCT/CN2023/075519 CN2023075519W WO2023231449A1 WO 2023231449 A1 WO2023231449 A1 WO 2023231449A1 CN 2023075519 W CN2023075519 W CN 2023075519W WO 2023231449 A1 WO2023231449 A1 WO 2023231449A1
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WO
WIPO (PCT)
Prior art keywords
light
lens
lens group
component
diffusing
Prior art date
Application number
PCT/CN2023/075519
Other languages
English (en)
French (fr)
Inventor
闫国枫
张聪
胡震宇
Original Assignee
深圳市火乐科技发展有限公司
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.)
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Application filed by 深圳市火乐科技发展有限公司 filed Critical 深圳市火乐科技发展有限公司
Publication of WO2023231449A1 publication Critical patent/WO2023231449A1/zh

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Classifications

    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/48—Laser speckle optics

Definitions

  • the present disclosure relates to the technical field of projection equipment, and particularly includes a light uniformity component, a projection light machine and a projection equipment.
  • the current solution mainly uses diffusers and some dynamic components, but the effect is not ideal or the size and cost are unsatisfactory. What's more, the jitter design of the projection screen is added, which does not take advantage of the user experience.
  • a light uniformity component a projection light machine, and a projection device are provided.
  • the first embodiment of the present disclosure proposes a light uniforming component, which includes a first light uniforming component, a spot shaping lens group, and a second uniformity component that are sequentially arranged along an optical path; the first uniformity component It is used to homogenize the light emitted by the light source; the spot shaping lens group includes at least one spot shaping lens, and at least one of the spot shaping lens is used to shape the spot of the light emitted by the first light homogenizing member and emits it.
  • the second light-diffusing component is used to homogenize the light emitted by the spot shaping lens group.
  • the second light-diffusing element includes a light-diffusing element and a first lens group, the first lens group includes at least one lens, and the lens is used to focus or collimate light;
  • the light uniforming element is disposed on the light incident side of the first lens group for uniformizing the light emitted by the spot shaping lens group.
  • the second light-diffusing element includes a light-diffusing element and a first lens group
  • the first lens group includes at least one lens
  • the lens is used to focus or collimate light; Describe the settings of the uniform light component On the light exit side of the first lens group, it is used to homogenize the light emitted by the first lens group.
  • the second light-diffusing element includes a light-diffusing element and a first lens group, the first lens group includes at least one lens, and the lens is used to focus or collimate light;
  • the light-smoothing element is disposed between two adjacent and spaced-apart lenses of the first lens group to homogenize the light emitted by one of the lenses and direct it to the adjacent other lens. Said lens.
  • the lenses are provided in two, namely a first lens and a second lens, and the focal points of the first lens and the second lens coincide with each other, and the light uniformity element is provided on the Between the first lens and the second lens and located at the focus, the first lens is located on the light incident side of the light uniforming element for condensing the light emitted from the spot shaping lens group. , the second lens is located on the light exit side of the light uniforming element for collimating the light emitted from the light uniforming element.
  • the light uniformity component further includes a collimating lens group and a third light uniformity member for uniformizing light, and the third light uniformity member is disposed on the first lens group.
  • the collimating lens group is disposed on the light exit side of the third light uniformity element and includes at least one collimating lens.
  • the first lens group further includes a third lens
  • the third lens is disposed on the light exit side of the second lens for converging light
  • the third light uniformity member Disposed on the light exit side of the third lens and located at the focus of the third lens.
  • the first light uniforming member includes a fly-eye lens
  • the light uniforming member includes a diffusion sheet
  • the third light uniforming member includes a light rod
  • the first lens group includes a first lens, the first lens is used to converge light, and the light uniformity element is disposed on the light exit side of the first lens and located on the At the focal point of the first lens, the light uniformity component further includes a third light uniformity element, and the third light uniformity element is disposed on the light exit side of the light uniformity element and close to the focus of the first lens.
  • the light uniforming component further includes a diffusion sheet, and the diffusion sheet is disposed on the light entrance side or the light exit side of the first light uniformity member.
  • the light uniforming component further includes a diffusion sheet, and the diffusion sheet is disposed on the light entrance side or the light exit side of the second light uniformity member.
  • both the first light uniformizing member and the second light uniformizing member are configured as fly-eye lenses.
  • the first embodiment of the present disclosure proposes a light uniforming component.
  • the first light uniforming component can uniformize the light emitted from the light source, perform a first-level uniformity on the light, reduce the speckle phenomenon of the light and improve the Uniformity.
  • the spot shaping lens of the spot shaping lens group can shape the spot of the light emitted by the first uniform light component and emit it to the light entrance side of the second uniform light component, thereby redistributing or combining light in different spaces and angles. Conducive to the elimination of speckles.
  • the light emitted by the spot shaping lens group can be further homogenized by arranging the second light homogenizing element, thereby homogenizing the light at the second level, further reducing the speckle phenomenon of the light and improving the uniformity of the light.
  • the second embodiment of the present disclosure provides a projection light machine.
  • the projection light machine includes a light source, an imaging component and the uniform light component.
  • the light source is disposed on the light incident side of the uniform light component.
  • the imaging component A light source is provided on the light exit side of the uniform light component to perform imaging processing on the light emitted from the uniform light component.
  • the light source includes a light combining element and a plurality of light emitting elements, each of the light emitting elements is used to emit light beams of different colors, and the light combining element is used to emit a plurality of the light emitting elements. Multiple beams of different colors are combined into a white beam light source.
  • a third embodiment of the present disclosure provides a projection device, which includes the above-mentioned projection light engine.
  • Figure 1 is a schematic structural diagram of a light uniformity component according to an embodiment of the present disclosure
  • Figure 2 is a schematic structural diagram of a projection light machine according to the first embodiment of the present disclosure
  • Figure 3 is a schematic structural diagram of a projection light machine according to a second embodiment of the present disclosure.
  • Figure 4 is a schematic structural diagram of a projection light machine according to a third embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a projection light machine according to a fourth embodiment of the present disclosure.
  • a component when a component is said to be “anchored” to another component, it can be directly on the other component or there can also be an intermediate component.
  • a component When a component is said to be “connected” to another component, it may be directly connected to the other component or there may be an intermediate component present at the same time.
  • the present disclosure provides a light uniforming component, which includes a first uniform light component 1 , a spot shaping lens group 2 and a second uniform light component 3 that are sequentially arranged along an optical path; the first The light homogenizing element 1 is used to homogenize the light emitted by the light source 10; the spot shaping lens group 2 includes at least one spot shaping lens 21, and the at least one spot shaping lens 21 is used to converge the light emitted by the first light homogenizing element 1 on the third beam.
  • the light incident side of the second light uniforming member 3; the second light uniforming member 3 is used to uniformize the light emitted by the spot shaping lens group 2.
  • the first light homogenizing member 1 can homogenize the light emitted from the light source 10, perform a first-level homogenization of the light, reduce the speckle phenomenon of the light and improve the uniformity.
  • the spot shaping lens 21 of the spot shaping lens group 2 can shape the spot of the light emitted by the first light uniformity member 1 (that is, adjust the cross-sectional spot shape) and emit it to the light incident side of the second light uniformity member 3, so that Redistribute or combine light from different spaces and angles to facilitate the elimination of speckles.
  • the light emitted by the spot shaping lens group 2 can be further homogenized by disposing the second light homogenizing member 3, thereby homogenizing the light at the second level, further reducing the speckle phenomenon of the light and improving the uniformity of the light. .
  • the above-mentioned light spot shaping lens 21 can be either a convex lens or a concave lens, as long as it can achieve the purpose of shaping the light spot shape, and the disclosure is not limited thereto.
  • first and third light uniforming members 1 and 3 can be configured as any appropriate light uniforming device, for example, they can be constructed as a fly-eye lens, a microstructure lens array, frosted glass, a light rod or a diffuser, etc., which is not covered by this disclosure. limited.
  • the second light-diffusing element 3 includes a light-diffusing element 31 and a first lens group 32 .
  • the first lens group 32 includes at least one lens, and the lens is used to focus or collimate the light.
  • the light uniforming element 31 is arranged on the light entrance side of the first lens group 32 for uniformizing the light emitted by the spot shaping lens group 2; or the light uniforming element 31 is arranged on the light exit side of the first lens group 32, To homogenize the light emitted by the first lens group 32; or the light uniforming element 31 is disposed between two adjacent and spaced apart lenses of the first lens group 32 to homogenize the light emitted by one of the lenses. Homogenize and shoot to another adjacent lens.
  • the first lens group 32 when the uniform light element 31 is disposed on the light exit side of the first lens group 32, the first lens group 32 can focus and/or collimate the light emitted by the spot shaping lens group 2 to meet the uniform light requirements.
  • the light input requirements of the light input side of the element 31 and the specific focusing or collimation of the light can be set according to the needs, and this disclosure does not limit this.
  • the light-diffusing element 31 when the light-diffusing element 31 is disposed on the light incident side of the first lens group 32, the light homogenized by the light-diffusing element 31 is directed to the first lens group 32 and focused and/or collimated to meet subsequent requirements. Light input requirements of imaging devices.
  • the lens located on the front side of the light-diffusing element 31 can focus the light
  • the lens located on the rear side of the light-diffusing element 31 can focus the light.
  • the light can be collimated, or the lens located on the front side of the light-diffusing element 31 can collimate the light, and the lens located on the rear side of the light-diffusing element 31 can focus the light.
  • two lenses are provided, namely a first lens 321 and a second lens 322 respectively, and the focal points of the first lens 321 and the second lens 322 coincide with each other, and the uniform light element 31 is provided on the first lens 321 and the second lens 322 .
  • the first lens 321 is located on the light incident side of the light uniformity element 31 for condensing the light emitted from the spot shaping lens group 2
  • the second lens 322 is located at the light uniformity
  • the light exit side of the element 31 is used to collimate the light emitted from the uniform light element 31 .
  • the first lens 321 is located on the light incident side of the light-diffusing element 31 and is used to converge light, the light is effectively converged at the focus of the first lens 321 , and the light-diffusing element 31 Disposed at the focus of the first lens 321, the converged light rays can be homogenized and decohered. This effectively avoids the problem that all the light cannot be directed to the light-diffusing element 31 due to light diffusion and other reasons.
  • the second lens 322 is located on the light exit side of the light uniforming element 31, and can collimate the light emitted by the light uniforming element 31, reduce the divergence angle of the light, and facilitate the transmission of the light.
  • the above-mentioned first light uniforming member 1 can be configured as a fly-eye lens
  • the spot shaping lens group 2 can have one spot shaping lens 21
  • the first lens group 32 can include a first lens 321 and a
  • the second lens 322 and the uniform light element 31 may be located at the focus of the first lens 321 and the second lens 322 .
  • Approximately parallel and separated red, green, and blue light beams are illuminated from the left side into the compound eye lens.
  • Each small unit lens in the compound eye lens diverges the light beam and then uses the spot shaping lens to 21 is refracted towards the first lens 321.
  • Each spatial area of the first lens 321 contains the beam information of each small unit lens of the fly-eye lens.
  • the light is homogenized by the homogenizing element 31, and the homogenizing effect and the decoherence effect can be achieved. Big enhancement.
  • the light beam is often directly directed to the light homogenizing element 31, and the light beam can only be homogenized within a certain angle range or only in a certain spatial area, and the entire light beam cannot be completely homogenized and decohered. Therefore, the emitted light beams still retain relatively strong coherence with each other, which will cause speckle and color non-uniformity.
  • the above-mentioned light homogenizing component of the present disclosure all light beams can be completely homogenized and decohered.
  • the above-mentioned first lens 321 and second lens 322 can also form a Keplerian telescope system, and the uniform light element 31 is located at the focal position between the first lens 321 and the second lens 322 .
  • the above-mentioned light-diffusing element 31 can be configured as a static diffuser or a dynamic diffusion wheel or a translational diffuser. This disclosure does not limit the specific type of the light-diffused element 31 . limited.
  • the light uniformity component 20 also includes a collimating lens group 5 and a third light uniformity element 4 for uniformizing light.
  • the third light uniformity element 4 is disposed on the first lens.
  • the collimating lens group 5 is disposed on the light exit side of the third light uniforming element 4 and includes at least one collimating lens 51.
  • a third light uniforming member 4 is provided on the light exit side of the first lens group 32 or the light exit side of the light uniformity element 31 .
  • the third light uniformity member 4 can uniformize the light uniformity of the light uniformity element 31 .
  • the light is further homogenized, and the homogenization effect and decoherence effect are further improved.
  • the homogenized light emitted from the third light uniforming member 4 can be collimated, thereby reducing the divergence angle of the light, which is more conducive to the transmission of the light.
  • the first lens group 32 also includes a third lens 323 .
  • the third lens 323 is disposed on the light exit side of the second lens 322 for condensing light.
  • the third light uniforming member 4 is provided on the light exit side of the third lens 323 and located at the focus of the third lens 323.
  • the first lens group 32 also includes a third lens 323.
  • the third lens 323 can condense the light emitted by the second lens 322.
  • the third light uniforming member 4 is disposed at the focus of the third lens 323, so that all the light emitted by the third lens 323 can be uniformized, further improving the uniformity effect.
  • the first lens group 32 includes a first lens 321 .
  • the first lens 321 is used to condense light.
  • the light uniformity element 31 is disposed on the light exit side of the first lens 321 and is located at the focus of the first lens 321 .
  • the uniform light component further includes a third uniform light component 4, which is disposed on the light exit side of the uniform light component 4 and close to the focal point of the first lens 321.
  • the uniform light element 31 By disposing the uniform light element 31 at the focus of the first lens 321 and disposing the third uniform light element 4 close to the focal point of the first lens 321 , the uniform light element 31 and the third uniform light element 4 jointly affect the first lens 321
  • the converged light is homogenized, further improving the homogenization effect and improving decoherence.
  • the light uniforming component 20 further includes a diffusion sheet (not shown), which is disposed on the light entrance side or the light exit side of the first light uniformity member 1 , or the diffusion sheet is disposed on the entrance side of the second light uniformity member 3 . Light side or light exit side.
  • a diffusion sheet (not shown), which is disposed on the light entrance side or the light exit side of the first light uniformity member 1 , or the diffusion sheet is disposed on the entrance side of the second light uniformity member 3 . Light side or light exit side.
  • the present disclosure also provides a projection light machine.
  • the projection light machine includes a light source 10 , an imaging component 30 and the above-mentioned uniform light component 20 .
  • the light emitted by the light source 10 is disposed on the uniform light component 20
  • the light incident side of the imaging component 30 is disposed on the light exit side of the uniform light component 20 to perform imaging processing on the light emitted from the uniform light component 20 .
  • the imaging component 30 may include a prism 301, an imaging chip 302 and a lens 303.
  • a projection light machine is provided.
  • the above-mentioned first uniform light component 1 is configured as a fly-eye lens
  • the spot shaping lens group 2 includes a spot shaping lens 21
  • the second uniform light component 3 includes a lens for A first lens 321 for focusing the light, a second lens 322 for collimating the light, a third lens 323 for focusing the light and a light-diffusion element 31 configured as a diffuser wheel.
  • the diffusion wheel is disposed at the focal point of the first lens 321 and the second lens 322.
  • the third light uniforming member 4 is configured as a light rod and is disposed on the light exit side of the third lens 323 and the light entrance side is located at the focus of the third lens 323 .
  • the light source 10 emits three different colors of red, green and blue laser beams (represented by numbers 1/2/3 respectively).
  • the different color beams pass through the compound eye lens and the spot shaping lens 21 and enter the first lens 321.
  • a white light spot is formed in which different red, green, and blue light beams are approximately synthesized together.
  • the emitted white light spot is more uniform and decoherent due to the presence of the diffusion wheel.
  • the light emitted from the third lens 323 converges to the light incident side of the light rod, and then passes through the collimating lens 51 to the imaging component 30 .
  • the light emitted through the collimating lens 51 is directed to the prism 301, which directs the light to the imaging chip 302.
  • the imaging chip 302 then receives the light and passes it through a TIR (Total Internal Reflection) prism to the lens 303 for imaging.
  • a TIR Total Internal Reflection
  • the above-mentioned light source 10 may be configured as a light-emitting component such as a light-emitting diode, which is not limited in this disclosure.
  • the length-to-width ratio of the above-mentioned light rod may be similar to the length-to-short side ratio of the imaging area of the imaging chip 302 .
  • the first uniform light component 1 is configured as a first fly-eye lens
  • the spot shaping lens group 2 includes a spot shaping lens 21
  • the second uniform light component 3 includes a spot shaping lens 21 .
  • the diffusion wheel is disposed at the focal point of the first lens 321 and the second lens 322.
  • the third uniform light element 4 is configured as a second fly-eye lens and is disposed on the light exit side of the second lens 322 .
  • the collimating lens group 5 includes two collimating lenses 51 .
  • the light source 10 emits red, green and blue laser beams of three different colors (indicated by numbers 1/2/3 respectively). After passing through the first compound eye lens and the spot shaping lens 21, the different color laser beams are reflected on the first lens 321. On the light incident side, a white light spot is formed in which different red, green, and blue light beams are approximately synthesized together. The outgoing white light spot is more uniform and decoherent due to the presence of the diffusion wheel. After the light is emitted from the second lens 322, it passes through the second compound eye lens to further homogenize the light. Then the light is directed to the two collimating lenses 51 and the light is collimated. The light emitted through the collimating lens 51 is directed to the prism 301. , the prism 301 emits light to the imaging chip 302, and then the imaging chip 302 receives the light and emits it to the lens 303 through the prism for imaging.
  • the length-to-width ratio of the small unit lens of the second fly-eye lens is similar to the length-to-short side ratio of the imaging area of the imaging chip 302 .
  • the above-mentioned first light uniforming member 1 is configured as a first fly-eye lens
  • the spot shaping lens group 2 includes a spot shaping lens 21 , which is used to converge light.
  • the second light-diffusing component 3 includes a first lens 321, a second lens 322, and a light-diffusing element 31 configured as a second fly-eye lens.
  • the first lens 321 and the second lens 322 are both used to collimate light, and the second fly-eye lens is located between the first lens 321 and the second lens 322 .
  • the collimating lens group 5 includes a collimating lens 51 .
  • the light source 10 emits red, green and blue laser beams of three different colors (indicated by numbers 1/2/3 respectively). After passing through the first compound eye lens and the spot shaping lens 21, the different color laser beams are reflected on the first lens 321. On the light incident side, a white light spot is formed in which different red, green, and blue light beams are approximately synthesized together. The outgoing white light spot is more uniform and decoherent due to the existence of the second compound eye lens. After the light is emitted from the second lens 322, it is directed to the collimating lens 51 and the light is collimated.
  • the light emitted through the collimating lens 51 is directed to the prism 301, which directs the light to the imaging chip 302, and then the imaging chip 302 The received light passes through the prism and is directed to the lens 303 for imaging.
  • the length-to-width ratio of the small unit lens of the second fly-eye lens can be similar to the length-to-width ratio of the imaging area of the imaging chip 302 .
  • the above-mentioned prism 301 can be constructed as a TIR (Total Internal Reflection, total internal reflection) prism or a PBS prism (polarizing beam splitting prism), and the imaging chip 302 can be constructed as a DMD (Digital Micromirror Device, digital micromirror device) Chip or LCOS (Liquid Crystal On Silicon) chip, this disclosure does not limit this.
  • TIR Total Internal Reflection, total internal reflection
  • PBS prism polarizing beam splitting prism
  • the imaging chip 302 can be constructed as a DMD (Digital Micromirror Device, digital micromirror device) Chip or LCOS (Liquid Crystal On Silicon) chip, this disclosure does not limit this.
  • DMD Digital Micromirror Device, digital micromirror device
  • LCOS Liquid Crystal On Silicon
  • the above-mentioned first light uniforming member 1 is configured as a fly-eye lens
  • the spot shaping lens group 2 includes a spot shaping lens 21 , which is used to converge light.
  • the second light-diffusing member 3 includes a first lens 321 and a light-diffusing element 31 configured as a diffusion wheel.
  • the first lens 321 is used to condense light, and the diffusion wheel is disposed at the focus of the first lens 321 .
  • a third light uniforming member 4 configured as a light rod is also provided on the light exit side of the diffusion wheel, and the light entry side of the light rod is located close to the focus of the first lens 321 .
  • the collimating lens group 5 on the light exit side of the light rod includes two collimating lenses 51 .
  • the light source 10 emits three different colors of red, green and blue laser beams (represented by numbers 1/2/3 respectively).
  • the different color beams pass through the compound eye lens and the spot shaping lens 21 and enter the first lens 321.
  • a white light spot is formed in which different red, green, and blue light beams are approximately synthesized together.
  • the emitted white light spot is more uniform and decoherent due to the presence of the diffusion wheel.
  • the light emerges from the diffuser wheel and then hits the light rod, which further homogenizes the light. Then the light hits two collimating lenses 51 and collimates the light.
  • the light emitted through the collimating lens 51 hits the prism 301.
  • the prism 301 sends the light to the imaging chip 302.
  • the imaging chip 302 receives the light and passes through the prism. Shoot to the lens 303 for imaging.
  • the light source 10 includes a light combining element 102 and a plurality of light emitting elements 101 .
  • Each light emitting element 102 is used to emit a monochromatic light beam of a different color.
  • the light combining element 101 is used to combine the multiple light emitting elements. Multiple monochromatic beams of different colors emitted by 102 are synthesized into a white beam, thereby improving the uniformity of light color.
  • three light-emitting elements 102 may be provided, which are respectively used to emit red, green and blue light beams (represented by numbers 1/2/3 respectively).
  • the above-mentioned fly-eye lens may be a single-sided fly-eye lens, a double-sided fly-eye lens, or a combination of two single-sided fly-eye lenses, which is not limited in this disclosure.
  • the above-mentioned light rod may be a solid optical material block, including but not limited to a cuboid and a cone, or it may be a reflective air channel formed by bonding multiple reflective lenses.
  • the present disclosure also provides a projection device, which includes the above-mentioned projection light machine.

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  • General Physics & Mathematics (AREA)
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Abstract

一种匀光组件（20）、投影光机及投影设备。匀光组件（20）包括沿光路依次设置的第一匀光件（1）、光斑整形透镜组（2）以及第二匀光件（3）；第一匀光件（1）用于对光源（10）射出的光线进行匀化；光斑整形透镜组（2）包括至少一个光斑整形透镜（21），光斑整形透镜（21）用于将第一匀光件（1）射出的光线的光斑进行整形并射向第二匀光件（3）的入光侧；第二匀光件（3）用于对光斑整形透镜组（2）射出的光线进行匀化。第一匀光件（1）对光线进行第一层级的匀化，减少光线的散斑现象并提高均匀性。光斑整形透镜组（2）能对不同空间和角度的光进行再分配或组合，利于散斑的消除。第二匀光件（3）可以对光斑整形透镜组（2）射出的光线进行进一步的匀化，对光线进行第二层级匀化，进一步减少光线的散斑现象并提高光线的均匀性。

Description

匀光组件、投影光机及投影设备
相关申请的交叉引用
本公开要求在2022年06月02日提交中国专利局、申请号为202210625784.1、名称为“匀光组件、投影光机及投影设备”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及投影设备技术领域，尤其包括一种匀光组件、投影光机及投影设备。
背景技术
相关技术中，对于如何设计出结构简单、颜色均匀和消散斑效果良好的投影机一直是厂商关心的问题。
目前的解决方案主要利用扩散片和一些动态元件实现，但是效果不甚理想或者体积和成本不尽人意，更有甚者还加入了投影屏幕的抖动设计，非常不利用用户的体验。
还有一些使用常规的复眼等光学元件进行积分匀光，但是效果不理想，不能够很好地匀化光束，导致投影处的画面依然有色斑，无法降低光束高时间和空间相干性。
发明内容
根据本公开的各种实施例，提供一种匀光组件、投影光机及投影设备。
本公开第一方面实施例提出了一种匀光组件，所述匀光组件包括沿光路依次设置的第一匀光件、光斑整形透镜组以及第二匀光件；所述第一匀光件用于对光源射出的光线进行匀化；所述光斑整形透镜组包括至少一个光斑整形透镜，至少一个所述光斑整形透镜用于对所述第一匀光件射出的光线的光斑进行整形并射向所述第二匀光件的入光侧；所述第二匀光件用于对所述光斑整形透镜组射出的光线进行匀化。
根据本公开的一个实施例，所述第二匀光件包括匀光元件和第一透镜组，所述第一透镜组包括至少一个透镜，所述透镜用于对光线进行聚焦或者准直；所述匀光元件设置于所述第一透镜组的入光侧，以用于对所述光斑整形透镜组射出的光线进行匀化。
根据本公开的一个实施例，所述第二匀光件包括匀光元件和第一透镜组，所述第一透镜组包括至少一个透镜，所述透镜用于对光线进行聚焦或者准直；所述匀光元件设置 于所述第一透镜组的出光侧，以用于对所述第一透镜组射出的光线进行匀化。
根据本公开的一个实施例，所述第二匀光件包括匀光元件和第一透镜组，所述第一透镜组包括至少一个透镜，所述透镜用于对光线进行聚焦或者准直；所述匀光元件设置于所述第一透镜组的相邻两个间隔设置的所述透镜之间，以用于对其中一个所述透镜射出的光线进行匀化并射向相邻的另一个所述透镜。
根据本公开的一个实施例，所述透镜设置为两个并分别为第一透镜和第二透镜，且所述第一透镜和所述第二透镜的焦点重合，所述匀光元件设置于所述第一透镜和所述第二透镜之间并位于所述焦点处，所述第一透镜位于所述匀光元件的入光侧以用于对从所述光斑整形透镜组射出的光线进行汇聚，所述第二透镜位于所述匀光元件的出光侧以用于对从所述匀光元件射出的光线进行准直。
根据本公开的一个实施例，所述匀光组件还包括准直透镜组和用于对光线进行匀化的第三匀光件，所述第三匀光件设置于所述第一透镜组的出光侧或所述匀光元件的出光侧，所述准直透镜组设置于所述第三匀光件的出光侧并包括至少一个准直透镜。
根据本公开的一个实施例，所述第一透镜组还包括第三透镜，所述第三透镜设置于所述第二透镜的出光侧以用于对光线进行汇聚，所述第三匀光件设置于所述第三透镜的出光侧并位于所述第三透镜的焦点处。
根据本公开的一个实施例，所述第一匀光件包括复眼透镜，所述匀光元件包括扩散片，所述第三匀光件包括光棒。
根据本公开的一个实施例，所述第一透镜组包括第一透镜，所述第一透镜用于对光线进行汇聚，所述匀光元件设置于所述第一透镜的出光侧并位于所述第一透镜的焦点处，所述匀光组件还包括第三匀光件，所述第三匀光件设置于所述匀光元件的出光侧并靠近所述第一透镜焦点设置。
根据本公开的一个实施例，所述匀光组件还包括扩散片，所述扩散片设置于所述第一匀光件的入光侧或出光侧。
根据本公开的一个实施例，所述匀光组件还包括扩散片，所述扩散片设置于所述第二匀光件的入光侧或出光侧。
根据本公开的一个实施例，所述第一匀光件和所述第二匀光件均构造为复眼透镜。
本公开第一方面实施例提出了一种匀光组件，首先，第一匀光件可以对光源射出的光线进行匀化，对光线进行第一层级的匀化，减少光线的散斑现象并提高均匀性。其次， 光斑整形透镜组的光斑整形透镜能够将第一匀光件射出的光线的光斑进行整形并射向第二匀光件的入光侧，从而能够对不同空间和角度的光进行再分配或组合，利于散斑的消除。并且，通过设置第二匀光件可以对光斑整形透镜组射出的光线进行进一步地匀化，进而对光线进行第二层级的匀化，进一步减少光线的散斑现象并提高光线的均匀性。
本公开第二方面实施例提出了一种投影光机，所述投影光机包括光源、成像组件以及所述的匀光组件，所述光源设置在匀光组件的入光侧，所述成像组件设置在所述匀光组件的出光侧，以对从所述匀光组件射出的光线进行成像处理光源光源。
根据本公开的一个实施例，所述光源包括合光元件和多个发光元件，每个所述发光元件用于发射不同颜色的光束，所述合光元件用于将多个所述发光元件射出的多束不同颜色的光束合成白色光束光源。
本公开第三方面实施例提出了一种投影设备，所述投影设备包括所述的投影光机。
附图说明
本公开上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1是本公开提供的一种实施方式的匀光组件的结构示意图；
图2是本公开提供的第一种实施方式的投影光机的结构示意图；
图3是本公开提供的第二种实施方式的投影光机的结构示意图；
图4是本公开提供的第三种实施方式的投影光机的结构示意图；
图5是本公开提供的第四种实施方式的投影光机的结构示意图。
具体实施方式
下面将结合本公开实施方式中的附图，对本公开实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本公开一部分实施方式，而不是全部的实施方式。基于本公开中的实施方式，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方式，都属于本公开保护的范围。
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。
需要注意，本公开中提及的“第一”、“第二”等概念仅用于对不同的装置、模块或 单元进行区分，并非用于限定这些装置、模块或单元所执行的功能的顺序或者相互依存关系。
如图1至图5所示，本公开提供一种匀光组件，该匀光组件包括沿光路依次设置的第一匀光件1、光斑整形透镜组2以及第二匀光件3；第一匀光件1用于对光源10射出的光线进行匀化；光斑整形透镜组2包括至少一个光斑整形透镜21，至少一个光斑整形透镜21用于将第一匀光件1射出的光线汇聚于第二匀光件3的入光侧；第二匀光件3用于对光斑整形透镜组2射出的光线进行匀化。
在上述技术方案中，首先，第一匀光件1可以对光源10射出的光线进行匀化，对光线进行第一层级的匀化，减少光线的散斑现象并提高均匀性。其次，光斑整形透镜组2的光斑整形透镜21能够将第一匀光件1射出的光线的光斑进行整形(即调整剖面光斑形状)并射向第二匀光件3的入光侧，从而能够对不同空间和角度的光进行再分配或组合，利于散斑的消除。并且，通过设置第二匀光件3可以对光斑整形透镜组2射出的光线进行进一步地匀化，进而对光线进行第二层级的匀化，进一步减少光线的散斑现象并提高光线的均匀性。
上述的光斑整形透镜21既可以是凸透镜也可以是凹透镜，只要能够达到对光斑形状进行整形的目的即可，本公开对此不作限定。
上述第一匀光件1和第三匀光件3可以构造为任意适当的匀光器件，例如可以构造为复眼透镜、微结构透镜阵列、毛玻璃、光棒或扩散片等，本公开对此不作限定。
在一种实施方式中，参照图1所示，第二匀光件3包括匀光元件31和第一透镜组32，第一透镜组32包括至少一个透镜，透镜用于对光线进行聚焦或者准直，匀光元件31设置于第一透镜组32的入光侧，以用于对光斑整形透镜组2射出的光线进行匀化；或匀光元件31设置于第一透镜组32的出光侧，以用于对第一透镜组32射出的光线进行匀化；或匀光元件31设置于第一透镜组32的相邻两个间隔设置的透镜之间，以用于对其中一个透镜射出的光线进行匀化并射向相邻的另一个透镜。
在该实施方式中，当匀光元件31设置于第一透镜组32的出光侧时，该第一透镜组32可以对光斑整形透镜组2射出的光线进行聚焦和/或者准直，满足匀光元件31入光侧的入光需求，具体对光线进行聚焦或准直可以根据需求自行设定，本公开对此不作限定。
其他实施方式中，当匀光元件31设置于第一透镜组32的入光侧，经过匀光元件31匀化后的光线射向第一透镜组32并进行聚焦和/或准直，满足后续成像器件的入光需求。
其他实施方式中，当匀光元件31设置于相邻两个间隔设置的透镜之间时，例如，位于匀光元件31前侧的透镜可以对光线进行聚焦，位于匀光元件31后侧的透镜可以对光线进行准直，或，位于匀光元件31前侧的透镜可以对光线进行准直，位于匀光元件31后侧的透镜可以对光线进行聚焦。
可选地，参照图1所示，透镜设置为两个并分别为第一透镜321和第二透镜322，且第一透镜321和第二透镜322的焦点重合，匀光元件31设置于第一透镜321和第二透镜322之间并位于焦点处，第一透镜321位于匀光元件31的入光侧以用于对从光斑整形透镜组2射出的光线进行汇聚，第二透镜322位于匀光元件31的出光侧以用于对从匀光元件31射出的光线进行准直。
在该实施方式中，因第一透镜321位于匀光元件31的入光侧并用于对光线进行汇聚，则在该第一透镜321的焦点处，光线进行了有效地汇聚，而匀光元件31设置于该第一透镜321的焦点处，则可以该汇聚的光线进行匀化和去相干。有效地避免了因光线扩散等原因导致的光线无法全部射向的匀光元件31的问题。而第二透镜322位于匀光元件31的出光侧，则可以对匀光元件31射出的光线进行准直，减小光线的发散角，利于光线的传输。
参照图1所示，举例来说，上述的第一匀光件1可以构造为复眼透镜，光斑整形透镜组2的光斑整形透镜21可以为一个，第一透镜组32可以包括第一透镜321和第二透镜322，匀光元件31可以并位于第一透镜321和第二透镜322的焦点处。近似平行且分离的红、绿、蓝光束(图中以数字1/2/3分别进行表示)从左侧照射入复眼透镜，复眼透镜里面的每个小单元透镜将光束发散后由光斑整形透镜21折射射向第一透镜321。在第一透镜321的每个空间区域都包含了照射入复眼透镜的每个小单元透镜的光束信息，至此光线再经过匀光元件31的匀化，匀光效果和去相干效果都能够得到极大的增强。
相关技术中，光束往往是直接射向匀光元件31，只能在一定角度范围内或者只能在一定空间区域内匀化掉光束，并不能够让全部光束得到完全的匀化和去相干，因此出射的光束彼此件还保留比较强的相干性，会带来散斑和颜色的不均匀性。而通过采用本公开的上述匀光组件，可以使得全部光束得到完全的匀化和去相干。
上述的第一透镜321和第二透镜322也可以组成开普勒望远镜系统，匀光元件31位于第一透镜321和第二透镜322之间的焦点位置。上述匀光元件31可以构造为静态的扩散片也可以是动态的扩散轮或者平动扩散片等，本公开并不对匀光元件31的具体类型作 限定。
参照图2、图3以及图5所示，匀光组件20还包括准直透镜组5和用于对光线进行匀化的第三匀光件4，第三匀光件4设置于第一透镜组32的出光侧或匀光元件31的出光侧，准直透镜组5设置于第三匀光件4的出光侧并包括至少一个准直透镜51。
在该实施方式中，首先，在第一透镜组32的出光侧或匀光元件31的出光侧设置第三匀光件4，该第三匀光件4可以对匀光元件31匀化后的光线进一步地进行匀化，匀化效果和去相干效果得到进一步提升。其次，通过设置准直透镜组5可以对从第三匀光件4射出的匀化后的光线进行准直，减小光线的发散角，更利于光线的传输。
在其他的实施方式中，请参考图2，第一透镜组32还包括第三透镜323，第三透镜323设置于第二透镜322的出光侧以用于对光线进行汇聚，第三匀光件4设置于第三透镜323的出光侧并位于第三透镜323的焦点处。
也即，在上述第一透镜321、第二透镜322的基础上，第一透镜组32还包括第三透镜323，该第三透镜323能够对第二透镜322射出的光线进行汇聚，而通过将第三匀光件4设置于第三透镜323的焦点处，则可以对第三透镜323射出的所有光线进行匀化，进一步地提高匀化的效果。
参照图5所示，第一透镜组32包括第一透镜321，第一透镜321用于对光线进行汇聚，匀光元件31设置于第一透镜321的出光侧并位于第一透镜321的焦点处，匀光组件还包括第三匀光件4，第三匀光件4设置于匀光元件4的出光侧并靠近第一透镜321焦点设置。
通过在第一透镜321的焦点处设置匀光元件31，且在靠近第一透镜321焦点处设置第三匀光元件4，该匀光元件31和第三匀光元件4共同对第一透镜321汇聚的光线进行匀化，进一步地提高匀化的效果，提高去相干性。
可选地，匀光组件20还包括扩散片(未图示)，扩散片设置于第一匀光件1的入光侧或出光侧，或者，扩散片设置于第二匀光件3的入光侧或出光侧。通过设置该扩散片可以更进一步地提高匀光组件20的匀光效果。
参照图2至图5所示，本公开还提供一种投影光机，该投影光机包括光源10、成像组件30以及上述的匀光组件20，光源10射出的光线设置在匀光组件20的入光侧，成像组件30的入光侧设置于匀光组件20的出光侧，以对从匀光组件20射出的光线进行成像处理。该成像组件30可以包括棱镜301、成像芯片302以及镜头303。
例如，参见图2所示，提供一种投影光机，上述的第一匀光件1构造为复眼透镜，光斑整形透镜组2包括一个光斑整形透镜21，第二匀光件3包括用于对光线进行聚焦的第一透镜321、用于对光线进行准直第二透镜322、用于对光线进行聚焦的第三透镜323以及构造为扩散轮的匀光元件31。该扩散轮设置于第一透镜321和第二透镜322的焦点重合处。第三匀光件4构造为光棒并设置于第三透镜323的出光侧且入光侧位于该第三透镜323的焦点处。
光源10射出的红色、绿色和蓝色三种不同颜色的激光光束(分别通过数字1/2/3表示)，不同颜色的光束经过复眼透镜和光斑整形透镜21后在第一透镜321的入光侧形成红绿蓝不同光束近似合成到一起的一个白色光斑，出射的白色光斑由于扩散轮的存在，更加均匀和去相干。光线从第三透镜323射出汇聚至光棒的入光侧，然后经过准直透镜51射向成像组件30。通过准直透镜51射出的光线射向棱镜301，该棱镜301将光线射向成像芯片302，接着成像芯片302将接收光线通过TIR(Total Internal Reflection，全内反射)棱镜射向镜头303进行成像。可选地，上述的光源10可以构造为发光二极管等发光件，本公开对此不作限定。
可选地，上述的光棒的长宽比例可以和成像芯片302的成像区域的长短边比例相近。
在其他的实施方式中，参照图3所示，上述的第一匀光件1构造为第一复眼透镜，光斑整形透镜组2包括一个光斑整形透镜21，第二匀光件3包括用于对光线进行聚焦的第一透镜321、用于对光线进行准直第二透镜322以及构造为扩散轮的匀光元件31。该扩散轮设置于第一透镜321和第二透镜322的焦点重合处。第三匀光件4构造为第二复眼透镜并设置于第二透镜322的出光侧，准直透镜组5包括两个准直透镜51。
光源10射出的红色、绿色和蓝色三种不同颜色的激光光束(分别通过数字1/2/3表示)，不同颜色的光束经过第一复眼透镜和光斑整形透镜21后在第一透镜321的入光侧形成红绿蓝不同光束近似合成到一起的一个白色光斑，出射的白色光斑由于扩散轮的存在，更加均匀和去相干。光线从第二透镜322射出后经过第二复眼透镜，对光线进一步进行匀化，之后光线射向两个准直透镜51并对光线进行准直，通过准直透镜51射出的光线射向棱镜301，该棱镜301将光线射向成像芯片302，接着成像芯片302将接收光线通过棱镜射向镜头303进行成像。
可选地，上述第二复眼透镜的小单元透镜长宽比例和成像芯片302的成像区域长短边比例相近。
或者，参照图4所示，上述的第一匀光件1构造为第一复眼透镜，光斑整形透镜组2包括一个光斑整形透镜21，该光斑整形透镜21用于对光线进行汇聚。第二匀光件3包括第一透镜321、第二透镜322以及构造为第二复眼透镜的匀光元件31。第一透镜321和第二透镜322均用于对光线进行准直，且第二复眼透镜位于第一透镜321和第二透镜322之间。准直透镜组5包括一个准直透镜51。
光源10射出的红色、绿色和蓝色三种不同颜色的激光光束(分别通过数字1/2/3表示)，不同颜色的光束经过第一复眼透镜和光斑整形透镜21后在第一透镜321的入光侧形成红绿蓝不同光束近似合成到一起的一个白色光斑，出射的白色光斑由于第二复眼透镜的存在，更加均匀和去相干。光线从第二透镜322射出后，射向准直透镜51并对光线进行准直，通过准直透镜51射出的光线射向棱镜301，该棱镜301将光线射向成像芯片302，接着成像芯片302将接收光线通过棱镜射向镜头303进行成像。该第二复眼透镜的小单元透镜长宽比例可以和成像芯片302的成像区域长短比例相近。
另外，上述的棱镜301可以构造为TIR(Total Internal Reflection，全内反射)棱镜，也可以构造为PBS棱镜(偏振分光棱镜)，成像芯片302可以构造为DMD(Digital Micromirror Device，数字微镜器件)芯片或者LCOS(Liquid Crystal On Silicon，硅上液晶)芯片，本公开对此不作限定。
在其他变形的方式中，参照图5所示，上述的第一匀光件1构造为复眼透镜，光斑整形透镜组2包括一个光斑整形透镜21，该光斑整形透镜21用于对光线进行汇聚。第二匀光件3包括第一透镜321和构造为扩散轮的匀光元件31。该第一透镜321用于对光线进行汇聚，且扩散轮设置于该第一透镜321的焦点处。在扩散轮的出光侧还设置有构造为光棒的第三匀光件4，该光棒的入光侧靠近第一透镜321的焦点处设置。光棒的出光侧的准直透镜组5包括两个准直透镜51。
光源10射出的红色、绿色和蓝色三种不同颜色的激光光束(分别通过数字1/2/3表示)，不同颜色的光束经过复眼透镜和光斑整形透镜21后在第一透镜321的入光侧形成红绿蓝不同光束近似合成到一起的一个白色光斑，出射的白色光斑由于扩散轮的存在，更加均匀和去相干。光线从扩散轮射出后射向光棒，该光棒对光线进一步地进行匀化。之后光线射向两个准直透镜51并对光线进行准直，通过准直透镜51射出的光线射向棱镜301，该棱镜301将光线射向成像芯片302，接着成像芯片302将接收光线通过棱镜射向镜头303进行成像。
可选地，参照图5所示，光源10包括合光元件102和多个发光元件101，每个发光元件102用于发射不同颜色的单色光束，合光元件101用于将多个发光元件102射出的多束不同颜色的单色光束合成白色光束，从而提高光线颜色的均匀性。例如，发光元件102可以设置为三个，分别用于发射红色、绿色以及蓝色光束(分别通过数字1/2/3进行表示)。
另外，上述的复眼透镜可以为单面复眼透镜、双面复眼透镜或者两片单面复眼透镜的组合，本公开对此不作限定。上述的光棒可以是实体的光学材料块体，包含但不仅限于长方体和锥体，也可以是多片反射透镜粘接形成的反射空气通道。
本公开还提供一种投影设备，该投影设备包括上述的投影光机。
以上仅为本公开的实施例，并非因此限制本公开的专利范围，凡是利用本公开说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本公开的专利保护范围内。

Claims (15)

  1. 一种匀光组件，其特征在于，所述匀光组件包括沿光路依次设置的第一匀光件、光斑整形透镜组以及第二匀光件；
    所述第一匀光件用于对光源射出的光线进行匀化；
    所述光斑整形透镜组包括至少一个光斑整形透镜，至少一个所述光斑整形透镜用于对所述第一匀光件射出的光线的光斑进行整形并射向所述第二匀光件的入光侧；
    所述第二匀光件用于对所述光斑整形透镜组射出的光线进行匀化。
  2. 根据权利要求1所述的匀光组件，其特征在于，所述第二匀光件包括匀光元件和第一透镜组，所述第一透镜组包括至少一个透镜，所述透镜用于对光线进行聚焦或者准直；所述匀光元件设置于所述第一透镜组的入光侧，以用于对所述光斑整形透镜组射出的光线进行匀化。
  3. 根据权利要求1所述的匀光组件，其特征在于，所述第二匀光件包括匀光元件和第一透镜组，所述第一透镜组包括至少一个透镜，所述透镜用于对光线进行聚焦或者准直；所述匀光元件设置于所述第一透镜组的出光侧，以用于对所述第一透镜组射出的光线进行匀化。
  4. 根据权利要求1所述的匀光组件，其特征在于，所述第二匀光件包括匀光元件和第一透镜组，所述第一透镜组包括至少一个透镜，所述透镜用于对光线进行聚焦或者准直；所述匀光元件设置于所述第一透镜组的相邻两个间隔设置的所述透镜之间，以用于对其中一个所述透镜射出的光线进行匀化并射向相邻的另一个所述透镜。
  5. 根据权利要求2所述的匀光组件，其特征在于，所述透镜设置为两个并分别为第一透镜和第二透镜，且所述第一透镜和所述第二透镜的焦点重合，所述匀光元件设置于所述第一透镜和所述第二透镜之间并位于所述焦点处，所述第一透镜位于所述匀光元件的入光侧以用于对从所述光斑整形透镜组射出的光线进行汇聚，所述第二透镜位于所述匀光元件的出光侧以用于对从所述匀光元件射出的光线进行准直。
  6. 根据权利要求5所述的匀光组件，其特征在于，所述匀光组件还包括准直透镜组 和用于对光线进行匀化的第三匀光件，所述第三匀光件设置于所述第一透镜组的出光侧或所述匀光元件的出光侧，所述准直透镜组设置于所述第三匀光件的出光侧并包括至少一个准直透镜。
  7. 根据权利要求6所述的匀光组件，其特征在于，所述第一透镜组还包括第三透镜，所述第三透镜设置于所述第二透镜的出光侧以用于对光线进行汇聚，所述第三匀光件设置于所述第三透镜的出光侧并位于所述第三透镜的焦点处。
  8. 根据权利要求7所述的匀光组件，其特征在于，所述第一匀光件包括复眼透镜，所述匀光元件包括扩散片，所述第三匀光件包括光棒。
  9. 根据权利要求2所述的匀光组件，其特征在于，所述第一透镜组包括第一透镜，所述第一透镜用于对光线进行汇聚，所述匀光元件设置于所述第一透镜的出光侧并位于所述第一透镜的焦点处，
    所述匀光组件还包括第三匀光件，所述第三匀光件设置于所述匀光元件的出光侧并靠近所述第一透镜焦点设置。
  10. 根据权利要求1-9中任意一项所述的匀光组件，其特征在于，所述匀光组件还包括扩散片，所述扩散片设置于所述第一匀光件的入光侧或出光侧。
  11. 根据权利要求1-9中任意一项所述的匀光组件，其特征在于，所述匀光组件还包括扩散片，所述扩散片设置于所述第二匀光件的入光侧或出光侧。
  12. 根据权利要求1所述的匀光组件，其特征在于，所述第一匀光件和所述第二匀光件均构造为复眼透镜。
  13. 一种投影光机，其特征在于，所述投影光机包括光源、成像组件以及上述权利要求1-12中任意一项所述的匀光组件，所述光源设置在匀光组件的入光侧，所述成像组件设置在所述匀光组件的出光侧，以对从所述匀光组件射出的光线进行成像处理。
  14. 根据权利要求13所述的投影光机，其特征在于，所述光源包括合光元件和多个发光元件，每个所述发光元件用于发射不同颜色的光束，所述合光元件用于将多个所述发光元件射出的多束不同颜色的光束合成白色光束。
  15. 一种投影设备，其特征在于，所述投影设备包括权利要求13或权利要求14所述的投影光机。
PCT/CN2023/075519 2022-06-02 2023-02-10 匀光组件、投影光机及投影设备 WO2023231449A1 (zh)

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