WO2020082975A1 - 显示设备与显示系统 - Google Patents

显示设备与显示系统 Download PDF

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Publication number
WO2020082975A1
WO2020082975A1 PCT/CN2019/108006 CN2019108006W WO2020082975A1 WO 2020082975 A1 WO2020082975 A1 WO 2020082975A1 CN 2019108006 W CN2019108006 W CN 2019108006W WO 2020082975 A1 WO2020082975 A1 WO 2020082975A1
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WO
WIPO (PCT)
Prior art keywords
light
array
spectrum
narrow
display device
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Application number
PCT/CN2019/108006
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English (en)
French (fr)
Inventor
郭祖强
杜鹏
李屹
Original Assignee
深圳光峰科技股份有限公司
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Priority to US17/288,874 priority Critical patent/US20210352250A1/en
Publication of WO2020082975A1 publication Critical patent/WO2020082975A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • 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
    • G02B27/0977—Reflective elements
    • 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
    • G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
    • 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
    • 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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • 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
    • G03B21/206—Control of light source other than position or intensity
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3152—Modulator illumination systems for shaping the light beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3161—Modulator illumination systems using laser light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3164—Modulator illumination systems using multiple light sources

Definitions

  • the present invention relates to the field of projection technology, and in particular, to a display device and a display system.
  • the light intensity distribution of light sources such as bulbs, LEDs, phosphors, etc. are all Lambertian distribution. After the light beams emitted by the optical system are efficiently collected by the optical system, the light intensity is a circular flat-top distribution.
  • the laser light source is a Gaussian beam. After passing through the above optical system, its angular intensity distribution is Gaussian.
  • Reflective devices especially total internal reflection prisms (TIR prisms) are commonly used in projection systems for reflective spatial light modulators such as DLP.
  • the principle of total reflection is used to distinguish modulated light for modulation from image light for projection.
  • the modulated light enters the spatial light modulator (using DMD as an example) through the total internal reflection prism, there is a certain angle between the optical axis and the normal of the plane where the DMD is located, and the angle of this angle is twice the flip angle of the DMD micromirror
  • the intensity distribution of the modulated light also changes, and the angle expands in the direction of irradiation.
  • FIG. 1 is a schematic diagram of the angle distribution of the light incident on the total internal reflection prism and the surface of the DMD in the prior art
  • FIG. 1A is a schematic diagram of the angle distribution of the light incident on the total internal reflection prism
  • FIG. 1B is an angle distribution of the light incident on the DMD surface schematic diagram.
  • the beam divergence angle is evenly distributed in the range of [-a, a]. After passing through the reflection surface r of the total internal reflection prism, it is incident on the DMD surface. Of light distributed at an elliptical angle.
  • the beam divergence angle of the DMD surface is uniformly distributed in the range of [-b, b], where b> a.
  • the angle of the modulated light needs to be reduced accordingly, that is, the light source needs to be reduced Optical expansion.
  • the angle increment (ba) / a of the DMD incident light is positively related to the flip angle of the DMD micromirror, and in order to improve the contrast of the DLP projector, the micromirror flip angle has been increased from the initial 10 ° Up to 12 °, up to 17 ° in the existing TRP technology, so after the light passes through the total internal reflection prism 901 to form an elliptical distribution, the difference between the long axis and the short axis is large, and the fill rate of the image light angle distribution in the lens aperture To further reduce the actual projection, the short axis direction of the ellipse distribution needs to be set slightly smaller than the lens aperture, so that the entire aperture is filled with light, and then the light on the edge of the long axis direction will be lost, and the system optical utilization rate is low.
  • FIG. 2 is a schematic structural diagram of a conventional projection device 10.
  • the light source 111 is usually an LED or phosphor that emits Lambertian light and is collected by a lens, or the arc of the light bulb emits Lambertian light and is collected by a reflector cup.
  • the light emitted by the light source 111 passes through the collection lens 112 and converges at the entrance of the uniform light device 114.
  • the light emitted from the light source 111 is filtered to provide time-modulated monochromatic modulated light for the light modulation device 902.
  • the modulated light is homogenized by the homogenizing device 114, passes through the reflector and the relay lens, and then enters the reflection surface r of the total internal reflection prism 901, and is totally reflected by the internal total reflection surface r of the total internal reflection prism 901 to the light modulation device 902 On the surface, the light modulation device 902 receives the image signal to modulate the light, and reflects the image light from the total internal reflection prism 901, and finally enters the lens 903.
  • FIG. 3A is an angle distribution diagram of the light emitted from the light source 111 shown in FIG. 2 on the reflection surface r of the total internal reflection prism 901
  • FIG. 3B is the incident light incident on the light modulation device 902 shown in FIG. Light angle distribution diagram.
  • the Lambertian light intensity distribution generated by the light source 111 is converted into a circular angle distribution at the entrance of the uniform light device 114, as shown in FIG.
  • the divergence angle of the light is in various directions on the light emitting cross section
  • the angles of are in the range of [-a, a], which is further converted into a circular angle distribution on the reflection surface r of the total internal reflection prism 901.
  • the light incident on the light modulation device 902 is obtained. As shown in FIG.
  • the angle distribution follows the ellipse distribution, and the angle distribution range of the light in the Y-axis direction of the figure is expanded to , B] range, the angle in the X-axis direction in the figure remains within the range of [-a, a], the X-axis direction in the figure is the horizontal direction of the paper, and the Y-axis direction in the figure is the paper Vertical direction.
  • the aperture of the lens is circular, and the size of the short axis direction of the light beam emitted by the light modulation device 902 is slightly smaller than the diameter of the aperture of the lens 903, so that the aperture of the lens 903 is completely filled with light, however, this will cause the light modulation device 902 There is a part of light loss in the direction of the long axis of the outgoing beam, and the light efficiency of the system is not high.
  • the size of the long axis direction of the elliptical light distribution is set to be slightly smaller than the aperture diameter of the lens 903, and the short axis direction There is a large gap in the above, which further affects the quality of the projected image screen of the projection device.
  • the present invention provides a display device that can facilitate the light beams incident on the surface of the light modulation device to be circularly distributed, thereby improving the output image of the display device on the basis of the higher optical utilization rate of the display device Picture quality.
  • a display device including:
  • Narrow-spectrum light source used to emit narrow-spectrum light with elliptical distribution
  • the reflecting device includes a reflecting surface for reflecting the narrow-spectrum light and obtaining modulated light
  • a light modulation device for modulating the modulated light to obtain image light of an image to be displayed includes a modulation surface for receiving the modulated light, the modulation surface and an optical axis of the modulated light At a preset angle, the modulated light forms a circular spot on the modulation surface.
  • a display system includes a broad-spectrum light source and the display device as described above,
  • the broad-spectrum light source is used to emit wide-spectrum light that modulates the first color gamut image
  • the narrow-spectrum light emitted from the narrow-spectrum light source is used to modulate the second color gamut image
  • the second color gamut covers the first
  • a color gamut has a portion that exceeds the first color gamut, and the broad-spectrum light and the narrow-spectrum light are combined by optical expansion to illuminate the reflecting device.
  • the angular distribution of the narrow-spectrum light emitted from the narrow-spectrum light source is set to an ellipse distribution, and the modulation surface of the light modulation device and the optical axis of the modulated light are at a preset angle so that the modulated light is on the modulation surface
  • a circular light spot is formed on the light modulation device, which is conducive to the image light emitted by the light modulation device with a circular angular distribution to enter the lens aperture, and at the same time, it is beneficial to improve the optical utilization rate of the display device and the display system and achieve a better image display effect.
  • FIG. 1 is a schematic diagram of the angle distribution of light incident on the total internal reflection prism and DMD surface in the prior art.
  • FIG. 2 is a schematic structural diagram of a conventional projection device.
  • FIG. 3A is an angle distribution diagram of light emitted from the light source shown in FIG. 2 on the surface of the total internal reflection prism.
  • FIG. 3B is an angle distribution diagram of light rays incident on the light modulation device shown in FIG. 2.
  • FIG. 4 is a schematic structural diagram of a display device provided by a first embodiment of the present invention.
  • FIG. 5A is a light angle distribution diagram of the incident surface of the scattering element shown in FIG. 4.
  • FIG. 5B is a light angle distribution diagram at the entrance of the uniform light device shown in FIG. 4.
  • 6A is an angle distribution diagram of the short-spectrum light shown in FIG. 4 on the incident surface of the total internal reflection prism.
  • 6B is an angle distribution diagram of incident light rays of the light modulation device shown in FIG. 4.
  • FIG. 7 is a schematic diagram of a display device provided by a second embodiment of the present invention.
  • FIG. 8A is a partial front view structure diagram of a narrow-spectrum light source in a display device provided by a third embodiment of the present invention.
  • FIG. 8B is a partial schematic structural view of the narrow-spectrum light source shown in FIG. 8A.
  • 9A is an angle distribution diagram of the light beam array on the incident surface of the scattering element shown in FIG. 8.
  • 9B is an angle distribution diagram of light rays at the entrance of the uniform light device shown in FIG. 8.
  • FIG. 10 is a schematic structural diagram of a display device provided by a fourth embodiment of the present invention.
  • FIG. 11 is a schematic plan view of the first light combining element shown in FIG. 10.
  • FIG. 12 is a schematic structural diagram of a display device according to a fifth embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a display system provided by a sixth embodiment of the present invention.
  • Projection equipment 10 light source 111 Collection lens 112 Color wheel 113 Uniform light device 114 Total internal reflection prism 901 Reflective surface r Light modulation device 902 Lens 903 display screen 20, 30, 50, 60 display system 70 Narrow spectrum light source 210, 410, 510 Broad spectrum light source 720 illuminator 721 Reflector 725 Wavelength conversion device 726 Shaped light source 211, 311, 411, 511, 611 Convergent lens 212, 312, 412, 512 Scattering element 213, 413, 513 Uniform light device 214 First array 2111, 3111, 4111, 5111, 6111 Second array 3112, 4112, 5112, 6112
  • Third array 4113, 6113 Fourth array 6114 The first mirror group 2115, 3115, 4115 First mirror 2115a, 4115a First light combining element 5115, 6115 Coating area 5115a Uncoated area 5115b First polarization state conversion element 3116 Second mirror group 4116 Second mirror 4116a Second light combining element 6116 First polarized light combining component 3117 First polarized light combining element 3117a Second polarization state conversion element 6117 Two polarized light combining components 6118
  • FIG. 4 is a schematic structural diagram of a display device 20 according to a first embodiment of the present invention.
  • the display device 20 may be an education projector, a cinema projection device, a micro projector, or the like.
  • the display device 20 includes a narrow-spectrum light source 210, a reflection device, a light modulation device 902, and a lens 903.
  • the narrow-spectrum light source 210 is used to emit narrow-spectrum light with an elliptical distribution.
  • the narrow-spectrum light emitted from the narrow-spectrum light source 210 obey the long-axis direction and the short-axis direction of the elliptical distribution, respectively, and the X-axis direction and the Y-axis in FIG.
  • the direction, specifically, the direction perpendicular to the drawing in FIG. 4 is the X-axis direction, and the longitudinal direction in the drawing is the Y-axis direction.
  • the reflection device is preferably a total internal reflection prism 901. It can be understood that the reflection device may also be other reflection elements or components.
  • the total internal reflection prism 901 includes a reflecting surface r, narrow-spectrum light is incident on the reflecting surface r, and the reflecting surface r reflects the narrow-spectrum light to obtain modulated light.
  • the light modulation device 902 is used to modulate the modulated light to obtain the image light of the image to be displayed.
  • the light modulation device 902 includes a modulation surface for receiving modulated light.
  • the modulation surface is at a preset angle to the optical axis of the modulated light.
  • the preset angle can be It is an acute or obtuse angle corresponding to the above ellipse distribution.
  • the ratio of the long axis direction to the short axis direction of the ellipse distribution matches the preset angle, so that the modulated light with an ellipse distribution forms a circular spot on the modulation surface, which is conducive to light modulation
  • the device 902 emits image light with a circular angular distribution, and the lens 903 is used to guide the image light from the display device 20 to obtain a display image.
  • the angular distribution of the narrow-spectrum light emitted from the narrow-spectrum light source 210 is set to an ellipse distribution, and the modulation surface and the optical axis of the modulated light are at a preset angle, so that the modulated light with an ellipse distribution forms a circular spot on the modulation surface
  • the light modulation device 902 to emit image light with a circular angular distribution, and the angular distribution of the image light matches the aperture shape of the lens device 903, which is beneficial to improving the optical utilization rate of the display device 10 and achieving a better image display effect.
  • the angular distribution of the narrow-spectrum light may also be a rectangular distribution, or other distributions with different angular distributions in mutually perpendicular directions.
  • the narrow-spectrum light irradiates the light modulation device The formation of a circular light spot by 902 is helpful to narrow the gap in the angular distribution of narrow-spectrum light in different directions, which in turn helps to improve the optical utilization rate of the display device 20 and achieve a better image display effect.
  • the narrow-spectrum light source 210 includes a shaping light source 211, a condensing lens 212, and a scattering element 213.
  • the scattering element 213 is a scattering wheel.
  • the shaping light source 211 is used to emit a beam array including laser light.
  • the beam array forms a plurality of discrete first light spots on the condensing lens 212.
  • the beam array passes through the condensing lens 212 to focus on the vicinity of the scattering element 213.
  • the scattering element 213 is used to focus
  • the rear beam array is scattered to obtain narrow-spectrum light.
  • the narrow-spectrum light source 210 further includes a light homogenizing device 214 to homogenize the narrow-spectrum light.
  • the shaping light source 211 includes a light emitting array and a shaping component.
  • the light-emitting array is used to emit multiple laser beams.
  • the shaping component is used to guide multiple laser beams to emit along the same optical path and obtain a beam array, and to adjust the spacing of the plurality of first light spots on the condensing lens 212 in the direction of the short axis of the ellipse distribution, so that the overall contour of the plurality of first light spots
  • the size in the short axis direction is smaller than the size in the long axis direction of the ellipse distribution.
  • the light emitting array includes a first array 2111, and the first array 2111 is used to emit multiple first lights, the first light is a laser;
  • the shaping component includes a first mirror group 2115, and the first mirror group 2115 includes a stepped arrangement and A plurality of first mirrors 2115a corresponding to the plurality of first beams in one-to-one correspondence. Each first beam of light is reflected by the corresponding first mirror 2115a to the condensing lens 212.
  • FIG. 5A is a light angle distribution diagram of the incident surface of the scattering element 213 shown in FIG. 4
  • FIG. 5B is a light angle distribution diagram at the entrance of the uniform light device 214 shown in FIG.
  • the Y axis direction in the drawings of the present invention is the same as the above short axis direction
  • the X axis direction in the drawings is the same as the above long axis direction
  • the short axis direction and the long axis direction are perpendicular to each other.
  • the short axis direction may not be the same as the Y axis direction
  • the long axis direction may not be the same as the X axis direction
  • the short axis direction and the long axis direction may be the same as other directions in the figure.
  • the first array 2111 may be a laser diode array to emit multiple laser beams as multiple first beams.
  • the beam array includes multiple beams, that is, there is a gap between the multiple beams. Therefore, the beam array forms a plurality of discrete first spots on the incident side surface of the condensing lens 212, and the angle distribution of the light incident on the scattering element 213 through the condensing lens 212 It is discontinuous. As shown in FIG. 5A, the angle distribution of light rays on the light-incident surface of the scattering element 213 is a plurality of discrete elliptic Gaussian distributions.
  • the beam array is linearly arranged in the short-axis direction (Y-axis direction), that is, the plurality of first light spots are linearly arranged in the short-axis direction, and accordingly, the angle of the beam array is distributed on the long axis
  • the slices in the direction (X-axis direction) have a continuous Gaussian distribution, and the slices in the short-axis direction have a plurality of discrete Gaussian distributions. It can be understood that, in other embodiments, the plurality of first light spots may be distributed in an array.
  • each first light emitted from the first array 2111 generally forms an elliptical spot on a cross section perpendicular to its propagation direction.
  • the multiple first beams emitted from the first array 2111 are reflected by the first mirror group 2115 to the surface of the condensing lens 212 to form a plurality of discrete first light spots, and each first light spot corresponds to a first light.
  • the angular distribution of each laser beam emitted by the laser diode has an elliptical Gaussian distribution. Specifically, as shown in FIG.
  • each beam in the beam array diverges in two orthogonal directions (long axis direction and short axis direction) The angles are different, showing an elliptic Gaussian angle distribution.
  • the long axis direction of the elliptical Gaussian angle distribution is parallel to the X axis direction and the short axis direction is parallel to the Y axis direction
  • the light emitted from the condensing lens 212 is scattered by the scattering element 213 to form a continuous elliptical Gaussian distribution, such as As shown in Figure 5B.
  • the light emitted by the scattering element 213 has a continuous Gaussian distribution in the X-axis direction and a continuous Gaussian distribution in the Y-axis direction.
  • the interval between adjacent first lights emitted by the first array 2111 and the interval between adjacent first mirrors 2115a are adjustable, by adjusting the distance between adjacent first lights The pitch and the pitch between the adjacent first mirrors 2115a to adjust the pitch of the plurality of first light spots on the condensing lens 212 in the short axis direction, so that the overall contour formed by the plurality of first light spots in the short axis direction It is smaller than the dimension in the long axis direction, that is, the overall contour of the plurality of first light spots is in the shape of an ellipse or a strip, the long axis of the overall contour is located in the X direction, and the short axis is located in the Y axis direction.
  • the maximum height of the light beam entering the condensing lens 212 can be converted into the maximum incident angle of the incident scattering element 213.
  • h the height of the beam entering the condensing lens 212
  • f the distance between the condensing lens 212 and the scattering element 213 along the optical axis. Since the light emitted by the condensing lens 212 is focused near the surface of the scattering element 213, f is approximately the converging lens
  • the focal length of ⁇ ; ⁇ is the angle of incidence of light rays entering the scattering element 213.
  • the scattering element 213 is used to scatter the incident light, and the angular distribution range of the outgoing light is positively related to the angular distribution of the incident light. Specifically, the scattering element 213 converts the discrete multiple beams of Gaussian-distributed incident light into a beam of elliptical Gaussian-distributed short-spectrum light, that is, the discrete angle-distributed incident light is converted into continuous-angle-distributed elliptic Gaussian-distributed short-spectrum light Shot out.
  • FIG. 6A is an angle distribution diagram of the short-spectrum light shown in FIG. 4 on the incident surface of the total internal reflection prism 901
  • FIG. 6B is an angle distribution diagram of the incident light rays of the light modulation device 902 shown in FIG. 4.
  • the angular distribution of the short-spectrum light emitted by the scattering element 213 is converted into the angular distribution of the short-spectrum light at the incident surface of the total internal reflection prism 901, and has a proportional relationship.
  • the short-spectrum light is reflected on the surface of the total internal reflection prism 901 and generates modulated light for incidence on the light modulation device 902.
  • the spacing between the plurality of first light spots on the condensing lens 212 in the short axis direction can be adjusted by adjusting the spacing between adjacent first lights emitted from the first array 2111 and the spacing between adjacent first mirrors 2115a And the angular distribution of the short-spectrum light emitted by the narrow-spectrum light source 210, so that the elliptical angular distribution of the modulated light emitted by the total internal reflection prism 901 is received by the light modulation device 902 to form a circular spot, and the light modulation device 902 is used to modulate the modulated light Obtain image light with circular angle distribution.
  • the image light completely fills the aperture of the lens 903, and the image display quality of the display device 20 is improved on the basis of achieving efficient optical utilization.
  • the light angle distribution of the entire display device 20 is Gaussian distribution, the proportion of light beams with small angles is high, and the light transmittance and collection efficiency of small angles are high, so it is the same as the Lambertian light in the prior art.
  • the Gaussian distribution of the display device 20 of the present invention has higher light transmission efficiency and light efficiency.
  • the scattering element 213 is a microlens array or an elliptical Gaussian diffuser, which is used to homogenize the beam array and adjust its angular distribution to a continuous elliptical distribution to obtain narrow-spectrum light. Even if the laser light entering the scattering element 213 has the same angular distribution in two orthogonal directions, such as a square or circular angular distribution, the angular distribution of the light entering the homogenizing device 214 can be converted into an elliptical distribution by the action of the scattering element 213.
  • FIG. 7 is a schematic diagram of a display device 30 according to a second embodiment of the present invention.
  • the display device 30 includes a shaping light source 311, and the light emitting array in the shaping light source 311 includes a first array 3111 and a second array 3112, and the second array 3112 is used to emit multiple beams The second light, the second light is laser light.
  • the first light and the second light emitted by the first array 3111 and the second array 3112 are light of the first polarization state, and the number of beams of the first light and the second light emitted by the first array 3111 and the second array 3112 may be the same It can also be different.
  • the shaping component in the display device 30 includes a first polarization state conversion element 3116 and a first polarization light combining component 3117 in addition to the first mirror group 3115.
  • the first polarization state conversion element 3116 is used to perform polarization state conversion on the multiple beams of first light emitted from the first mirror group 3115, that is, convert the multiple beams of first light on the first mirror group 3115 into The second polarization state.
  • the first polarized light combining component 3117 includes a plurality of first polarized light combining elements 3117a arranged stepwise and corresponding to the plurality of second lights emitted from the second array 3112, adjacent to the first polarized light combining element 3117a There is a gap between them, and each of the first polarized light combining elements 3117a is used to guide a beam of second light and the first light emitted from the first polarization state conversion element 3116 to perform polarized light combining and obtain a light beam illuminating the condensing lens 312 Array. Specifically, each first polarized light combining element 3117a is used to transmit the light of the second polarization state and reflect the light of the first polarization state.
  • FIG. 8A is a partial front view structural diagram of a narrow-spectrum light source 410 in a display device provided in a third embodiment of the present invention
  • FIG. 8B is a partial top-view of the narrow-spectrum light source 410 shown in FIG. 8A.
  • Schematic. Compared with the narrow-spectrum light source 210 provided in the first embodiment, the narrow-spectrum light source 410 provided in the present embodiment mainly differs in that the shaping light source 411 light emitting array includes the second array 4112 and the second array in addition to the first array 4111.
  • the three arrays 4113, the second array 4112 and the third array 4113 are respectively used to emit multiple second lights and multiple third lights, and the second light and the third light are both laser light. After each beam of the first light, the second light, and the third light is reflected by the corresponding first mirror 4115a in the first mirror group 4115, multiple beams of first light, multiple beams of second light, and multiple beams of third light
  • the axes are arranged in sequence along the long axis.
  • the optical axes of the plurality of first lights, the plurality of second lights, and the plurality of third lights emitted from the first mirror group 4115 are the first optical axis, the second optical axis, and the third optical axis, respectively.
  • the distance between the second optical axis and the first optical axis is greater than the distance between the second optical axis and the third optical axis, that is, the multiple first light beams and the multiple second light beams emitted from the first mirror 4115a
  • the large gap between them results in uneven beam distribution in the beam array, which affects the uniformity of the light emitted by the shaping light source 411, so at least one third light needs to be adjusted from the edge position of the multiple laser beams to the multiple laser beams
  • the location of the gap is large, thereby compressing the size of the beam array in the long axis direction.
  • the shaping assembly further includes a second mirror group 4116.
  • the second mirror group 4116 includes a plurality of second mirrors 4116a.
  • a third beam of light emitted from at least one first mirror 4115a is reflected by the corresponding second mirror 4116a.
  • the optical axis corresponding to the at least one third beam emitted from the second mirror 4116a is located between the optical axis of the multiple first beams emitted from the first mirror group 4115 and the optical axes of the multiple second beams
  • multiple first lights and multiple second lights emitted from the first mirror group 4115, and at least one third light emitted from the second mirror group 4116 exit in the same direction to obtain a beam array.
  • the plurality of second mirrors 4116a in the second mirror group 4116 are sequentially arranged along the long axis direction, and are used to change the propagation path of the third light in the long axis direction. All the third light emitted from the third array 4113 sequentially passes through a corresponding first mirror 4115a and a corresponding second mirror 4116a, and the third light at the edge position among the multiple laser beams emitted from the first mirror group 4115 Adjust between multiple first beams and multiple second beams. The spacing between the adjacent second mirrors 4116a is adjustable.
  • the spacing between the adjacent second mirrors By adjusting the spacing between the adjacent second mirrors, the spacing of the multiple first light spots on the condensing lens 412 in the long axis direction can be adjusted, thereby adjusting The scattering element 413 emits angular distribution of short-spectrum light in the long axis direction.
  • FIG. 9A is an angle distribution diagram of the light beam array on the incident surface of the scattering element 413 shown in FIG. 8, and FIG. 9B is an angle distribution diagram of light rays at the entrance of the uniform light device 414 shown in FIG. 8.
  • the angular distribution of light on the light-incident side of the scattering element 413 is composed of a plurality of discrete Gaussian elliptical distributions, and the elliptical Gaussian distribution in the middle column (in the Y-axis direction) comes from multiple third lights.
  • the spacing between a plurality of discrete Gaussian ellipse distributions is approximately equal.
  • the scattering element 413 converts a beam array whose incident angle follows the discrete ellipse Gaussian distribution into a beam of short-spectrum light whose angular distribution follows the continuous ellipse Gaussian distribution .
  • the scattering element 413 may not be able to emit The uniformly arranged array beam is converted into a short-spectrum beam and emitted.
  • the second mirror group 4116 is used to adjust the uniformity of the short-spectrum light emitted by the shaping light source 411, which is conducive to improving the output picture quality of the display device; on the other hand, the first mirror group 4115 is used in combination And the second mirror group 4116 realizes the compression of the two-dimensional space (long axis direction and short axis direction) of the beam array, which is beneficial to improve the uniformity of the distribution of short-spectrum light and flexibly adjust the angle of the short-spectrum light emitted by the shaping light source 411 distributed.
  • FIG. 10 is a schematic structural diagram of a display device 50 according to a fourth embodiment of the present invention.
  • the display device 50 differs from the display device 20 provided in the first embodiment mainly in that the narrow-spectrum light source 510 in the display device 50 is different from the narrow-spectrum light source 210 in the display device 20.
  • the narrow-spectrum light source 510 includes a shaped light source 511, and the shaped light source 511 includes a first array 5111 and a second array 5112 for emitting a plurality of first lights and a plurality of second lights, respectively.
  • the light is laser.
  • the shaping component includes a first light combining element 5115.
  • the first light combining element 5115 is used to guide a plurality of beams of first light and a plurality of beams of second light to be combined to obtain a beam array irradiated onto the condensing lens 512.
  • FIG. 11 is a schematic top view of the first light combining element 5115 shown in FIG. 10.
  • the first light combining element 5115 includes a coated area 5115a and a non-coated area 5115b.
  • the first light combining element 5115 includes two coating regions 5115a arranged at intervals, and the two coating regions 5115a are provided with the same optical film.
  • the first light combining element 5115 can perform wavelength combining or polarization combining according to the wavelengths and polarization states of the first light and the second light.
  • the coated region 5115a and the uncoated region 5115b can be provided with a wavelength splitting film or polarized light splitting Diaphragm. It is understood that the first light combining element 5115 can also flexibly set other numbers of coating regions 5115a according to the arrangement of the first array 5111 and the second array 5112.
  • Multiple beams of first light are irradiated to the coated area 5115a, and multiple beams of second light are irradiated to the uncoated area 5115b.
  • the coated area 5115a and the uncoated area 5115b are used to guide multiple beams of first light and multiple beams of second light to be emitted along the same optical path. Beam array. Specifically, the coated area 5115a is used to reflect multiple beams of first light, and the uncoated area 5115b is used to transmit multiple beams of second light.
  • the spacing between adjacent coating areas 5115a is adjustable. By adjusting the spacing between adjacent coating areas 5115a, the spacing of multiple first light spots on the condensing lens 512 in the short axis direction is adjusted, thereby adjusting the incidence to the scattering element 513 The angular distribution of the beam in the short axis direction.
  • FIG. 12 is a schematic structural diagram of a display device 60 according to a fifth embodiment of the present invention.
  • the light-emitting array in the shaping light source 611 includes not only the first array 6111 and the second array 6112, but also the first for emitting multiple third lights and multiple fourth lights, respectively.
  • the shaping component further includes: a second light combining element 6116, a second polarization state conversion element 6117, and a second polarizing light combining element 6118.
  • the second light combining element 6116 is used to guide multiple third lights and multiple fourth lights to combine light.
  • the second polarization state conversion element 6117 is used to convert the light of the first polarization state emitted by the second light combining element 6116 into the light of the second polarization state.
  • the second polarized light combining component 6118 is used to guide the light of the first polarization state emitted by the first light combining element 6115 and the light of the second polarization state emitted by the second polarization state conversion element 6117 to perform polarization combining and obtain a beam array.
  • first light combining element 6115 For specific structures of the first light combining element 6115, the second light combining element 6116, and the second polarized light combining component 6118, reference may be made to the first light combining element 5115. It can be understood that the first light combining element 6115, the second light combining element 6116 and the second polarized light combining component 6118 may also be other structures that can combine the incident light.
  • the coating area of the second polarized light combining component 6118 is provided with a polarizing beam splitting film. Specifically, the second polarized light combining The component 6118 is used to reflect light of the first polarization state and transmit light of the second polarization state.
  • FIG. 13 is a schematic structural diagram of a display system 70 according to a sixth embodiment of the present invention.
  • the display system 70 includes a broad-spectrum light source 720 and the display device provided in any of the above embodiments.
  • the display device 20 in the first embodiment is used as an example for description. It can be understood that the implementation is changed In the manner, the display device 30, 40, 50, 60, or a display device provided by a person skilled in the art based on the present invention, through conventional technical means or other forms of common sense transformation can be used to replace the display device 20 .
  • the broad-spectrum light source 720 is used to emit wide-spectrum light that modulates the first color gamut image
  • the narrow-spectrum light emitted from the narrow-spectrum light source 210 in the display device 20 is used to modulate the second color gamut image.
  • the second color gamut covers the first color gamut and has a portion that exceeds the first color gamut
  • the broad-spectrum light and the narrow-spectrum light are combined by the optical expansion of the light and emitted from the homogenizing device 214.
  • the broad-spectrum light source 720 further includes a luminous body 721, a reflecting mirror 725, and a wavelength conversion device 726, where the luminous body 721 may be a light bulb, a light emitting diode, a phosphor, or the like used to emit Lambertian light.
  • the narrow-spectrum light emitted from the scattering element 213 in the narrow-spectrum light source 210 is condensed near the mirror 725, the wide-spectrum light is in a defocused state at the position of the mirror 725, and the broad-spectrum light and the narrow-spectrum light are combined at the mirror 725 by the optical expansion .
  • the broad-spectrum light source 720 further includes a wavelength conversion device 726, such as a color wheel or a fixed phosphor sheet.
  • the light emitted by the reflecting mirror 725 passes through the wavelength conversion device 726 and enters the uniform light device 214 in the narrow-spectrum light source 210, and is irradiated to the total internal reflection prism 901.
  • the narrow-spectrum light with the elliptical distribution with high light efficiency emitted by the narrow-spectrum light source 210 in the foregoing embodiment is combined with the broad-spectrum light with the Lambertian distribution emitted by the wide-spectrum light source 720 before being combined
  • Light modulation compared with the traditional light source, adding fewer lasers can achieve a wide color gamut, which is beneficial to reduce the cost and volume of the display system 70.

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Abstract

一种显示设备（20）及显示系统（70），显示设备（20）包括：窄谱光源（210），用于发出呈椭圆分布的窄谱光；反射装置，包括一反射面，反射面用于反射窄谱光并得到调制光；光调制装置（902），用于对调制光进行调制得到待显示图像的图像光，光调制装置（902）包括用于接收调制光的调制面，调制面与调制光的光轴呈预设角度，使得调制光在调制面上形成圆形的光斑。服从椭圆分布的窄谱光入射至光调制装置（902）形成圆形光斑，有利于光调制装置（902）出射圆形角度分布的图像光，有利于提高光效以及实现较佳的图像显示品质。

Description

显示设备与显示系统 技术领域
本发明涉及投影技术领域，尤其涉及一种显示设备及显示系统。
背景技术
本部分旨在为权利要求书中陈述的本发明的具体实施方式提供背景或上下文。此处的描述不因为包括在本部分中就承认是现有技术。
在投影系统的光源中，灯泡、LED、荧光粉等光源的光强分布均为郎伯分布，其发射的光束经过光学系统高效地收集后，光强为圆形的平顶分布。而激光光源为高斯光束，经过上述光学系统后，其角光强分布为高斯分布。
反射装置，特别是全内反射棱镜(TIR棱镜)，通常应用于DLP等反射式空间光调制器的投影系统，利用全反射原理区分用于调制的调制光和用于投影的图像光。但调制光经过全内反射棱镜入射空间光调制器(以DMD为例)时，光轴与DMD所在平面的法线存在一定的夹角，该夹角的角度为DMD微镜翻转角度的两倍，沿DMD底面或侧面照射，此时调制光的光强分布也发生改变，在照射方向上角度发生扩大。
请参阅图1，为现有技术中光线入射全内反射棱镜及DMD表面的角度分布示意图，其中，图1A为光线入射全内反射棱镜的角度分布示意图，图1B为光线入射DMD表面的角度分布示意图。光线在入射全内反射棱镜的反射面r时为圆形的角度分布，光束发散角在[-a，a]的范围内均匀分布，经过全内反射棱镜的反射面r后得到入射至DMD表面的呈椭圆的角度分布的光线。具体地，在一个方向上，DMD表面的光束发散角在[-b，b]的范围内均匀分布，其中b＞a。为了使经过DMD调制后出射的图像光都能够经过投影镜头的光圈，即DMD出射 光截面上的椭圆形光斑完全包含于镜头光圈内，需要相应地减小调制光的角度，即要求降低光源的光学扩展量。而灯泡、LED等光源的光学扩展量无法改变，进而导致光效的损失，或选用低亮度规格的光源型号；在荧光粉光源中，则为要求激发光斑的尺寸减小，进而提高荧光粉的受激发功率密度，光源的亮度也会较低。
在上述情况的基础上，DMD入射光线的角度增量(b-a)/a与DMD微镜的翻转角度成正相关关系，而为了提高DLP投影机的对比度，微镜翻转角度已经从最初的10°增加至12°，直至现有的TRP技术中的17°，因此光线经过全内反射棱镜901形成椭圆分布后，长轴和短轴的差异程度较大，图像光角度分布在镜头光圈中的填充率进一步降低，实际投影时，需要将椭圆分布的短轴方向设置的略小于镜头的光圈，使得光圈内全部填充光线，进而会损失掉长轴方向位于边缘的光线，系统光学利用率低。
请参阅图2，为现有投影设备10的结构示意图。
光源111通常为LED或荧光粉发射朗伯光后经透镜收集，或灯泡的电弧发射郎伯光经反光杯收集后出射，光源111出射的光线经过收集透镜112会聚于匀光器件114入口，色轮113对光源111出射的光线进行滤光，为光调制装置902提供时序的单色调制光。调制光经过匀光器件114均匀化后，经过反射镜及中继透镜后入射至全内反射棱镜901的反射面r，并经过全内反射棱镜901内部全反射面r全反射至光调制装置902表面，光调制装置902接收图像信号对光线进行调制，并反射图像光从全内反射棱镜901出射，最后进入镜头903。
请结合图2参阅图3，图3A为图2所示的光源111出射光线在全内反射棱镜901反射面r的角度分布图，图3B为图2所示的入射至光调制装置902上的光线角度分布图。在光路的光学扩展量转化过程中，光源111产生的朗伯光强分布，转化为匀光器件114入口的圆形角度分布，如图3A所示，光线的发散角在发光截面上各个方向上的角度均在[-a，a]的范围内，进而转化为入射全内反射棱镜901反射面r上的圆形角度分布。但在经过全内反射棱镜901全反射后得到入射至光 调制装置902的光线，如图3B所示，角度分布服从椭圆分布，光线在图中Y轴方向的角度分布范围扩大至在[-b，b]的范围内变化，在图中X轴方向的角度保持在[-a，a]的范围内变化，图中X轴方向为纸面的水平方向，图中Y轴方向为纸面的垂直方向。
一般地，镜头光圈呈圆形，会设置光调制装置902出射的光束的短轴方向尺寸略小于镜头903的光圈直径，使得镜头903的光圈中全部填充光线，然而，这会导致光调制装置902出射的光束长轴方向上有部分光线损失，系统光效不高。为了让光调制装置902出射的光束能够完全被镜头903所收集，以达到较高的光学效率，则会设置光线椭圆分布的长轴方向的尺寸略小于镜头903的光圈直径，而在短轴方向上则存在较大的空缺，进而影响投影设备的出射图像画面的质量。
发明内容
有鉴于此，本发明提供一种可以有利于入射至光调制装置表面的光束呈圆形分布的显示设备，从而在显示设备的具有较高的光学利用率的基础上，提高显示设备的出射图像画面质量。
一种显示设备，包括：
窄谱光源，用于发出呈椭圆分布的窄谱光；
反射装置，包括一反射面，所述反射面用于反射所述窄谱光并得到调制光；
光调制装置，用于对所述调制光进行调制得到待显示图像的图像光，所述光调制装置包括用于接收所述调制光的调制面，所述调制面与所述调制光的光轴呈预设角度，使得所述调制光在所述调制面上形成圆形的光斑。
一种显示系统，包括宽谱光源与如上所述的显示设备，
其中，所述宽谱光源用于发出调制第一色域图像的宽谱光，所述窄谱光源出射的窄谱光用于调制第二色域图像，所述第二色域覆盖所述第一色域并具有超出所述第一色域的部分，所述宽谱光与所述窄谱光进行光学扩展量合光后照射至所述反射装置。
本发明将窄谱光源出射的窄谱光的角度分布设置为椭圆分布，所述光调制装置的调制面与所述调制光的光轴呈预设角度，使得所述调制光在所述调制面上形成圆形的光斑，有利于所述光调制装置出射圆形角度分布的图像光入射至镜头光圈，同时有利于提高显示设备及显示系统的光学利用率以及实现较佳的图像显示效果。
附图说明
为了更清楚地说明本发明实施例/方式技术方案，下面将对实施例/方式描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例/方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中光线入射全内反射棱镜及DMD表面的角度分布示意图。
图2为现有投影设备的结构示意图。
图3A为图2所示的光源出射光线在全内反射棱镜表面的角度分布图。
图3B为图2所示的入射至光调制装置上的光线角度分布图。
图4为本发明第一实施实施方式提供的显示设备的结构示意图。
图5A为图4所示的散射元件入射面的光线角度分布图。
图5B为图4所示的匀光器件入口处的光线角度分布图。
图6A为图4所示的短谱光在全内反射棱镜入射面的角度分布图。
图6B为图4所示的光调制装置入射光线的角度分布图。
图7为本发明第二实施方式提供的显示设备示意图。
图8A为本发明第三实施方式提供的显示设备中的窄谱光源的局部正视结构示意图。
图8B为图8A所示的窄谱光源的局部俯视结构示意图。
图9A为图8所示的散射元件入射面上光束阵列的角度分布图。
图9B为图8所示的匀光器件入口处光线的角度分布图。
图10为本发明第四实施方式提供的显示设备的结构示意图。
图11为图10所示的第一合光元件的俯视结构示意图。
图12为本发明提供的第五实施方式显示设备的结构示意图。
图13为本发明第六实施方式提供的显示系统的结构示意图。
主要元件符号说明
投影设备 10
光源 111
收集透镜 112
色轮 113
匀光器件 114
全内反射棱镜 901
反射面 r
光调制装置 902
镜头 903
显示设备 20、30、50、60
显示系统 70
窄谱光源 210、410、510
宽谱光源 720
发光体 721
反射镜 725
波长转换装置 726
整形光源 211、311、411、511、611
会聚透镜 212、312、412、512
散射元件 213、413、513
匀光器件 214
第一阵列 2111、3111、4111、5111、6111
第二阵列 3112、4112、5112、6112
第三阵列 4113、6113
第四阵列 6114
第一反射镜组 2115、3115、4115
第一反射镜 2115a、4115a
第一合光元件 5115、6115
镀膜区域 5115a
非镀膜区域 5115b
第一偏振态转换元件 3116
第二反射镜组 4116
第二反射镜 4116a
第二合光元件 6116
第一偏振合光组件 3117
第一偏振合光元件 3117a
第二偏振态转换元件 6117
二偏振合光组件 6118
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施例对本发明进行详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
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。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于 限制本发明。
请参阅图4，为本发明第一实施方式提供的显示设备20的结构示意图。显示设备20可以为教育投影仪、影院投影设备及微型投影仪等设备，显示设备20包括窄谱光源210、反射装置、光调制装置902及镜头903。
其中，窄谱光源210用于发出呈椭圆分布的窄谱光，窄谱光源210出射的窄谱光服从的椭圆分布的长轴方向与短轴方向分别与图4中的X轴方向与Y轴方向，具体地，图4中垂直于图面的方向为X轴方向，图面中的纵向为Y轴方向。反射装置优选为全内反射棱镜901，可以理解的是，反射装置还可以是其他反射元件或组件。全内反射棱镜901包括一反射面r，窄谱光入射至反射面r，反射面r对窄谱光进行反射得到调制光。光调制装置902用于对调制光进行调制得到待显示图像的图像光，光调制装置902包括用于接收调制光的调制面，调制面与调制光的光轴呈预设角度，预设角度可以是一对应上述椭圆分布的锐角或钝角，椭圆分布的长轴方向与短轴方向的比例与预设角度相互配合，使得呈椭圆分布的调制光在调制面上形成圆形光斑，有利于光调制装置902出射圆形角度分布的图像光，镜头903用于引导图像光从显示设备20出射得到显示图像。
本发明将窄谱光源210出射的窄谱光的角度分布设置为椭圆分布，调制面与调制光的光轴呈预设角度，使得呈椭圆分布的调制光在调制面上形成圆形光斑，有利于光调制装置902出射圆形角度分布的图像光，图像光的角度分布与镜头装置903的光圈形状匹配，有利于提高显示设备10的光学利用率及并实现较佳的图像显示效果。
在一种实施方式中，窄谱光的角度分布除了上述的椭圆分布外，还可以是矩形分布，或是在相互垂直的方向上的角度分布不同的其他分布，窄谱光照射至光调制装置902形成圆形的光斑，有利于缩小窄谱光在不同方向上的角度分布的差距，进而有利于提高显示设备20的光学利用率及并实现较佳的图像显示效果。
具体地，窄谱光源210包括整形光源211、会聚透镜212及散射 元件213，本实施方式中，散射元件213为散射轮。
其中，整形光源211用于出射包括激光的光束阵列，光束阵列在会聚透镜212上形成多个离散的第一光斑，光束阵列经过会聚透镜212聚焦于散射元件213附近，散射元件213用于对聚焦后的光束阵列进行散射以得到窄谱光。可以理解的是，窄谱光源210还包括匀光器件214，以对窄谱光进行均匀化处理。
整形光源211包括发光阵列及整形组件。其中，发光阵列用于发出多束激光。整形组件用于引导多束激光沿同一光路出射并得到光束阵列，以及用于调节会聚透镜212上多个第一光斑在椭圆分布的短轴方向上的间距，使得多个第一光斑的整体轮廓在短轴方向上的尺寸小于在椭圆分布的长轴方向上的尺寸。
发光阵列包括第一阵列2111，第一阵列2111用于出射多束第一光，第一光为激光；整形组件包括第一反射镜组2115，第一反射镜组2115包括阶梯排布的并与多束第一光一一对应的多个第一反射镜2115a，每束第一光经对应第一反射镜2115a反射至会聚透镜212。
请结合图4参阅图5，其中，图5A为图4所示的散射元件213入射面的光线角度分布图，图5B为图4所示的匀光器件214入口处的光线角度分布图。
本发明附图中的Y轴方向与上述的短轴方向相同，附图中的X轴方向与上述的长轴方向相同，短轴方向与长轴方向相互垂直。可以理解的是，在一种实施方式中，短轴方向可以不与Y轴方向相同，长轴方向可以不与X轴方向相同，短轴方向与长轴方向可以与图中的其他方向。第一阵列2111可以为激光二极管阵列以发出多束激光作为多束第一光。由于第一阵列2111中多个激光二级管之间是存在间隙的，并且第一反射镜组2115中的相邻第一反射镜2115a之间也是存在间隙的，故第一反射镜组2115出射的光束阵列包括多束光线，即多束光线之间存在间隙，因此光束阵列在会聚透镜212入光侧表面形成多个离散的第一光斑，经过会聚透镜212入射至散射元件213的光线角度分布是不连续的，如图5A所示，散射元件213入光侧表面光线角度分 布呈多个离散的椭圆高斯分布。
在本实施方式中，光束阵列在短轴方向(Y轴方向)上呈线性排布，即多个第一光斑在短轴方向上呈线性排布，相应地，光束阵列的角度分布在长轴方向(X轴方向)上的切片呈连续的高斯分布，在短轴方向上的切片呈多个离散的高斯分布。可以理解的是，在其他实施方式中，多个第一光斑可以呈阵列分布。
由于激光二极管的底座比激光二极管的发光面要大，因此第一阵列2111发出的每束第一光在沿垂直于其传播方向上的截面上一般是形成椭圆形光斑。第一阵列2111出射的多束第一光经过第一反射镜组2115反射至会聚透镜212表面形成多个离散的第一光斑，每个第一光斑对应一束第一光。相应地，激光二极管发出的每束激光角度分布呈椭圆高斯分布，具体地，如图5A所示，光束阵列中的每束光在正交的两个方向(长轴方向与短轴方向)发散角度不同，呈现椭圆的高斯角分布。具体地，椭圆高斯角分布的长轴方向平行于X轴方向上，短轴方向平行于Y轴方向，而会聚透镜212出射的光线在经过散射元件213散射后，形成连续的椭圆高斯分布，如图5B所示。具体地，散射元件213出射的光线在X轴方向上呈连续的高斯分布，在Y轴方向上呈连续的高斯分布。
如图4所示，由于第一阵列2111发出的相邻第一光之间的间距，以及相邻第一反射镜2115a之间的间距是可调节的，通过调节相邻第一光之间的间距及相邻第一反射镜2115a之间的间距，以调节会聚透镜212上多个第一光斑在短轴方向上的间距，使得多个第一光斑形成的整体轮廓在短轴方向上的尺寸小于在长轴方向上的尺寸，即多个第一光斑的整体轮廓呈椭圆形或条形等形状，整体轮廓的长轴位于X方向方向，短轴位于Y轴方向。
光束阵列经过会聚透镜212会聚于散射元件213的过程中，根据h＝f*tanθ，则可将进入会聚透镜212的光束最大高度转换为入射散射元件213的最大入射角度。其中，h为进入会聚透镜212的光束高度；f为会聚透镜212与散射元件213沿光轴方向的距离，由于会聚透镜 212出射的光线聚焦于散射元件213表面附近，因此，f约为会聚透镜的焦距；θ为入射散射元件213的光线入射角度。散射元件213用于对入射的光线进行散射，并且其出射光线的角度分布范围与入射光线的角度分布正相关。具体地，散射元件213将离散的多束服从高斯分布的入射光线转换为一束椭圆高斯分布的短谱光出射，即将离散角度分布的入射光线转换为连续角度分布的椭圆高斯分布的短谱光出射。
请参阅图6，图6A为图4所示的短谱光在全内反射棱镜901入射面的角度分布图，图6B为图4所示的光调制装置902入射光线的角度分布图。根据光学扩展量原理，散射元件213出射的短谱光的角分布转化为短谱光在全内反射棱镜901的入射面角分布，并且成正比关系。短谱光在全内反射棱镜901表面发生反射并产生用于入射至光调制装置902的调制光。
可以通过调节第一阵列2111出射的相邻第一光之间的间距及相邻第一反射镜2115a之间的间距，以实现调节会聚透镜212上多个第一光斑在短轴方向上的间距以及窄谱光源210出射的短谱光的角度分布，使得全内反射棱镜901出射的椭圆角度分布的调制光被光调制装置902承接形成圆形光斑，光调制装置902用于对调制光进行调制得到圆形角度分布的图像光。图像光完全填充镜头903的光圈，在达到高效的光学利用率的基础上提升了显示设备20的图像画面显示质量。
另外，由于在整个显示设备20中，光线角度分布均为高斯分布，因此小角度的光束所占比例高，小角度的光线透过率和收集效率高，因而与现有技术中的朗伯光经过光学系统形成的平顶分布相比较，本发明中的显示设备20的高斯分布的光传递效率及光效较高。
在变更实施方式中，散射元件213为微透镜阵列或椭圆高斯散射片，用于对光束阵列进行均匀化处理，并将其角分布调整为连续的椭圆分布，以得到窄谱光。即使进入散射元件213的激光在正交两个方向上角度分布相同，比如正方形或圆形的角度分布，亦能够通过散射元件213的作用将光线进入匀光器件214的角度分布转换为椭圆分布。
请参阅图7，为本发明第二实施方式提供的显示设备30示意图。 本实施方式与第一实施方式相比，主要区别在于，显示设备30包括整形光源311，整形光源311中的发光阵列包括第一阵列3111与第二阵列3112，第二阵列3112用于发出多束第二光，第二光为激光。第一阵列3111与第二阵列3112发出的第一光与第二光均为第一偏振态的光，第一阵列3111与第二阵列3112出射的第一光与第二光的光束数量可以相同也可以不同。显示设备30中的整形组件除了第一反射镜组3115之外，还包括第一偏振态转换元件3116与第一偏振合光组件3117。第一偏振态转换元件3116，用于对第一反射镜组3115出射的多束第一光进行偏振态转换，即将第一反射镜组3115出射的多束第一偏振态的第一光转换为第二偏振态。第一偏振合光组件3117，包括阶梯排布的并与第二阵列3112发出的多束第二光一一对应的多个第一偏振合光元件3117a，相邻第一偏振合光元件3117a之间设置有间隙，每个第一偏振合光元件3117a用于引导一束第二光与第一偏振态转换元件3116出射的一束第一光进行偏振合光并得到照射至会聚透镜312的光束阵列。具体地，每个第一偏振合光元件3117a用于透射第二偏振态的光，并反射第一偏振态的光。
请参阅图8A-图8B，其中，图8A为本发明第三实施方式提供的显示设备中的窄谱光源410的局部正视结构示意图，图8B为图8A所示的窄谱光源410的局部俯视结构示意图。本实施方式中提供的窄谱光源410与第一实施方式中提供的窄谱光源210相比，主要区别在于：整形光源411发光阵列除了第一阵列4111之外，还包括第二阵列4112及第三阵列4113，第二阵列4112与第三阵列4113分别用于出射多束第二光及多束第三光，第二光及第三光均为激光。每束第一光、第二光及第三光经第一反射镜组4115中对应的第一反射镜4115a反射后，多束第一光、多束第二光及多束第三光的光轴沿长轴方向依次排布。
其中，第一反射镜组4115出射的多束第一光、多束第二光及多束第三光的光轴分别为第一光轴、第二光轴及第三光轴，在长轴方向上，第二光轴与第一光轴之间的距离大于第二光轴与第三光轴之间的距离，即第一反射镜4115a出射的多束第一光与多束第二光之间的间隙 较大，导致光束阵列中光束分布不均匀，从而影响整形光源411出射光线的均匀性，因此需要将至少一束第三光从多束激光光束的边沿位置调整至多束激光光束中空隙较大位置，从而在长轴方向上压缩了光束阵列的尺寸。
整形组件还包括第二反射镜组4116，第二反射镜组4116包括多个第二反射镜4116a，至少一第一反射镜4115a出射的一束第三光经过对应第二反射镜4116a反射后，在长轴方向上，对应第二反射镜4116a出射的至少一束第三光的光轴位于第一反射镜组4115出射的多束第一光的光轴与多束第二光的光轴之间，第一反射镜组4115出射的多束第一光、多束第二光，及第二反射镜组4116出射的至少一束第三光沿同一方向出射得到光束阵列。
在本实施方式中，第二反射镜组4116中的多个第二反射镜4116a沿长轴方向依次排布，用于在长轴方向上改变第三光的传播路径。第三阵列4113出射的全部第三光依次经过一对应第一反射镜4115a及对应的第二反射镜4116a，将第一反射镜组4115出射的多束激光光束中位于边缘位置的全部第三光调整至多束第一光与多束第二光之间。相邻第二反射镜4116a之间的间距是可调节的，通过调节相邻第二反射镜之间的间距，以调节会聚透镜412上多个第一光斑在长轴方向上的间距，从而调节散射元件413出射短谱光在长轴方向上的角度分布。
请参阅图9，图9A为图8所示的散射元件413入射面上光束阵列的角度分布图，图9B为图8所示的匀光器件414入口处光线的角度分布图。
如图9A所示，散射元件413入光侧光线的角度分布由多个离散的高斯椭圆分布组成，位于中间一列的(Y轴方向上的)多个椭圆高斯分布来自于多束第三光，多个离散的高斯椭圆分布之间的间距近似相等，如图9B所示，散射元件413将入射角度服从离散椭圆高斯分布的光束阵列转换为角度分布服从连续椭圆高斯分布的一束短谱光出射。
若在本实施方式中不添加第二反射镜组4116，由于散射元件413 不能将入射的服从高斯分布的激光光束散射为朗伯分布的光线，因此散射元件413未必能够将会聚透镜412出射的非均匀排布的阵列光束转换为一束短谱光出射。
本实施方式中，一方面，利用第二反射镜组4116调整了整形光源411出射短谱光的均匀性，有利于提高显示设备的出射画面品质；另一方面，组合使用第一反射镜组4115及第二反射镜组4116实现对光束阵列进行二维空间(长轴方向与短轴方向)的压缩，有利于提高短谱光的分布均匀性，以及灵活调整整形光源411出射短谱光的角度分布。
请参阅图10，为本发明第四实施方式提供的显示设备50的结构示意图。显示设备50与第一实施方式提供的显示设备20相比，主要区别在于，显示设备50中的窄谱光源510与显示设备20中的窄谱光源210有区别。
具体的，窄谱光源510包括整形光源511，整形光源511包括分别用于发出多束第一光与多束第二光的第一阵列5111与第二阵列5112，其中，第一光与第二光均为激光。整形组件包括第一合光元件5115，第一合光元件5115用于引导多束第一光与多束第二光进行合光后得到照射至会聚透镜512上的光束阵列。
请参阅图11，为图10所示的第一合光元件5115的俯视结构示意图。第一合光元件5115包括镀膜区域5115a与非镀膜区域5115b。其中，第一合光元件5115包括2个间隔设置的镀膜区域5115a，2个镀膜区域5115a设置有相同光学膜片。第一合光元件5115可以根据第一光与第二光的波长及偏振态进行波长合光或偏振合光，相应地，镀膜区域5115a与非镀膜区域5115b可以设置有波长分光膜片或偏振分光膜片。理解的是第一合光元件5115还可以根据第一阵列5111与第二阵列5112的设置方式灵活设置其他数量的镀膜区域5115a。
多束第一光照射至镀膜区域5115a，多束第二光照射至非镀膜区域5115b，镀膜区域5115a与非镀膜区域5115b用于引导多束第一光与多束第二光沿同一光路出射得到光束阵列。具体地，镀膜区域5115a 用于反射多束第一光，非镀膜区域5115b用于透射多束第二光。
相邻镀膜区域5115a之间的间距是可调节的，通过调节相邻镀膜区域5115a之间的间距，调节会聚透镜512上多个第一光斑在短轴方向上的间距，从而调节入射至散射元件513上光束在短轴方向上的角度分布。
请参阅图12，为本发明提供的第五实施方式显示设备60的结构示意图。显示设备60与显示设备50的主要区别在于，整形光源611中的发光阵列不仅包括第一阵列6111与第二阵列6112，还包括分别用于发出多束第三光与多束第四光的第三阵列6113与第四阵列6114，其中第三光与第四光均为激光，并且，第一光、第二光、第三光及第四光均为第一偏振态的光。整形组件还包括：第二合光元件6116、第二偏振态转换元件6117及第二偏振合光组件6118。第二合光元件6116用于引导多束第三光及多束第四光进行合光。第二偏振态转换元件6117用于将第二合光元件6116出射的第一偏振态的光转换为第二偏振态的光。第二偏振合光组件6118，用于引导第一合光元件6115出射的第一偏振态的光及第二偏振态转换元件6117出射的第二偏振态的光进行偏振合光并得到光束阵列。
具体第一合光元件6115、第二合光元件6116及第二偏振合光组件6118的结构可以参考第一合光元件5115，可以理解的是，第一合光元件6115、第二合光元件6116及第二偏振合光组件6118还可以是能够完成将入射光线进行合光的其他结构，另外第二偏振合光组件6118的镀膜区域设置有偏振分光膜片，具体的，第二偏振合光组件6118用于反射第一偏振态的光，并透射第二偏振态的光。
请参阅图13，为本发明第六实施方式提供的显示系统70的结构示意图。显示系统70包括一宽谱光源720及上述任意一个实施方式中提供的显示设备，本实施方式中，以采用第一实施方式中的显示设备20为例进行说明，可以理解的是，在变更实施方式中，还可以采用显示设备30、40、50、60，或本领域技术人员基于本发明提供的显示设备，通过常规的技术手段或公知常识变换得到的其他形式的显示设备 来替换显示设备20。
具体地，宽谱光源720用于发出调制第一色域图像的宽谱光，显示设备20中的窄谱光源210出射的窄谱光用于调制第二色域图像。其中，第二色域覆盖第一色域并具有超出第一色域的部分，宽谱光与窄谱光进行光学扩展量合光后自匀光器件214出射。
宽谱光源720还包括发光体721、反射镜725及波长转换装置726，其中发光体721可以是灯泡、发光二极管或荧光粉等用于发出朗伯光的发光体。窄谱光源210中散射元件213出射的窄谱光会聚于反射镜725附近，宽谱光在反射镜725位置处于离焦状态，宽谱光与窄谱光在反射镜725进行光学扩展量合光。本实施方式中，宽谱光源720还包括波长转换装置726，比如是色轮或固定的荧光粉片。反射镜725出射的光线经过波长转换装置726进入窄谱光源210中的匀光器件214，并照射至全内反射棱镜901。
在整个显示系统70中，利用前述实施例中窄谱光源210出射的椭圆分布的光效较高的窄谱光，与宽谱光源720出射的朗伯分布的宽谱光进行合光后再进行光调制，相对于传统光源，添加较少的激光器就能够实现广色域，有利于降低显示系统70的成本和体积。
需要说明的是，在本发明的精神或基本特征的范围内，各个实施方式中的各具体方案可以相互适用，为节省篇幅及避免重复起见，在此就不再赘述。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。此外，显然“包括”一词不排除其他单元或步骤，单数不排除复数。装置权利要求中陈述的多个装置也可以由同一个装置或系统通过软件或者硬件来实现。第一，第二等词语用 来表示名称，而并不表示任何特定的顺序。
最后应说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或等同替换，而不脱离本发明技术方案的精神和范围。

Claims (18)

  1. 一种显示设备，其特征在于，包括：
    窄谱光源，用于发出呈椭圆分布的窄谱光；
    反射装置，包括一反射面，所述反射面用于反射所述窄谱光并得到调制光；
    光调制装置，用于对所述调制光进行调制得到待显示图像的图像光，所述光调制装置包括用于接收所述调制光的调制面，所述调制面与所述调制光的光轴呈预设角度，使得所述调制光在所述调制面上形成圆形的光斑。
  2. 如权利要求1所述的显示设备，其特征在于，所述窄谱光源包括整形光源、会聚透镜及散射元件；
    其中，所述整形光源用于出射包括激光的光束阵列，所述光束阵列在所述会聚透镜上形成多个离散的第一光斑，所述光束阵列经过所述会聚透镜聚焦于所述散射元件附近，所述散射元件用于对聚焦后的光束阵列进行散射以得到所述窄谱光。
  3. 如权利要求2所述的显示设备，其特征在于，所述整形光源包括：
    发光阵列，用于发出多束激光；
    整形组件，用于引导多束激光沿同一光路出射并得到所述光束阵列，以及用于调节所述会聚透镜上多个第一光斑在所述椭圆分布的短轴方向上的间距，使得多个第一光斑的整体轮廓在所述短轴方向上的尺寸小于或等于在所述椭圆分布的长轴方向上的尺寸。
  4. 如权利要求2所述的显示设备，其特征在于，所述散射元件为微透镜阵列或椭圆高斯散射片，所述散射元件用于对光束阵列进行均匀化处理，并将其角分布调整为椭圆分布，以得到所述窄谱光。
  5. 如权利要求3所述的显示设备，其特征在于，所述散射元件为微透镜阵列或椭圆高斯散射片，所述散射元件用于对光束阵列进行均匀化处理，并将其角分布调整为椭圆分布，以得到所述窄谱光。
  6. 如权利要求3所述的显示设备，其特征在于，所述散射元件为散射轮。
  7. 如权利要求3-6任意一项所述的显示设备，其特征在于，所述发光阵列包括第一阵列，所述第一阵列用于出射多束第一光，所述第一光包括激光；
    所述整形组件包括第一反射镜组，所述第一反射镜组包括阶梯排布的并与所述第一光一一对应的多个第一反射镜，每束第一光经对应第一反射镜反射至所述会聚透镜。
  8. 如权利要求7所述的显示设备，其特征在于，相邻第一光之间的间距，以及相邻第一反射镜之间的间距是可调节的，通过调节相邻第一光之间的间距及相邻第一反射镜之间的间距，以调节所述会聚透镜上多个第一光斑在所述短轴方向上的间距。
  9. 如权利要求7所述的显示设备，其特征在于，所述发光阵列还包括第二阵列，所述第二阵列用于发出多束第二光，所述第二光包括激光；
    所述整形组件还包括：
    第一偏振态转换元件，用于对所述第一反射镜组出射的多束第一光进行偏振态转换；
    第一偏振合光组件，包括阶梯排布的并与所述第二阵列发出的多束第二光一一对应的多个第一偏振合光元件，每个第一偏振合光元件用于引导一束第二光与所述第一偏振态转换元件出射的一束第一光进行偏振合光并得到照射至所述会聚透镜的光束阵列。
  10. 如权利要求7所述的显示设备，其特征在于，
    所述发光阵列还包括第二阵列及第三阵列，所述第二阵列与所述第三阵列分别用于出射多束第二光及多束第三光，第二光与第三光均为激光；
    每束第一光、第二光及第三光经所述第一反射镜组中对应的第一反射镜反射后，多束第一光、多束第二光及多束第三光的光轴沿所述长轴方向依次排布；
    所述整形组件还包括第二反射镜组，所述第二反射镜组包括多个第二反射镜，至少一第一反射镜出射的一束第三光经过对应第二反射镜反射后，在所述长轴方向上，对应第二反射镜出射的第三光的光轴位于所述第一反射镜组出射的第一光的光轴与第二光的光轴之间，所述第一反射镜组出射的多束第一光、多束第二光及所述第二反射镜组出射的至少一束第三光沿同一方向出射得到所述光束阵列。
  11. 如权利要求10所述的显示设备，其特征在于，所述第一反射镜组出射的多束第一光、多束第二光及多束第三光的光轴分别为第一光轴、第二光轴及第三光轴，在所述长轴方向上，所述第二光轴与所述第一光轴之间的距离大于所述第二光轴与所述第三光轴之间的距离。
  12. 如权利要求10所述的显示设备，其特征在于，相邻第二反射镜之间的间距是可调节的，通过调节相邻第二反射镜之间的间距，以调节所述会聚透镜上多个第一光斑在所述长轴方向上的间距。
  13. 如权利要求3-6任意一项所述的显示设备，其特征在于，
    所述发光阵列包括：
    第一阵列，用于发出多束第一光，所述第一光为激光；及
    第二阵列，用于发出多束第二光，所述第二光为激光；
    所述整形组件包括：
    第一合光元件，用于引导多束第一光与多束第二光进行合光后得到照射至所述会聚透镜的光束阵列。
  14. 如权利要求13所述的显示设备，其特征在于，所述第一合光元件包括镀膜区域与非镀膜区域，多束第一光照射至所述镀膜区域，多束第二光照射至所述非镀膜区域，所述镀膜区域与所述非镀膜区域用于引导多束第一光与多束第二光沿同一光路出射得到所述光束阵列。
  15. 如权利要求14所述的显示设备，其特征在于，相邻镀膜区域之间的间距是可调节的，通过调节相邻镀膜区域之间的间距，调节所述会聚透镜上多个第一光斑在所述短轴方向上的间距。
  16. 如权利要求13所述的显示设备，其特征在于，所述发光阵列还包括：
    第三阵列，用于发出多束第三光，所述第三光为激光；及
    第四阵列，用于发出多束第四光，所述第三光为激光；
    其中，所述第一光、所述第二光、所述第三光及所述第四光均为第一偏振态的光；
    所述整形组件还包括：
    第二合光元件，用于引导多束第三光及多束第四光进行合光；
    第二偏振态转换元件，用于将所述第二合光元件出射的第一偏振态的光转换为第二偏振态的光；及
    第二偏振合光组件，用于引导所述第一合光元件出射的第一偏振态的光及所述第二偏振态转换元件出射的第二偏振态的光进行偏振合光并得到所述光束阵列。
  17. 一种显示系统，其特征在于，包括宽谱光源与如权利要求1-16任意一项所述的显示设备，
    其中，所述宽谱光源用于发出调制第一色域图像的宽谱光，所述窄谱光源出射的窄谱光用于调制第二色域图像，所述第二色域覆盖所述第一色域并具有超出所述第一色域的部分，所述宽谱光与所述窄谱光进行光学扩展量合光后照射至所述反射装置。
  18. 如权利要求17所述的显示系统，其特征在于，所述宽谱光源还包括反射镜，所述窄谱光源中的散射元件出射的窄谱光会聚于所述反射镜附近，所述宽谱光在所述反射镜位置处于离焦状态，所述宽谱光与所述窄谱光在所述反射镜进行光学扩展量合光。
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