WO2020063159A1 - 光源系统及投影系统 - Google Patents

光源系统及投影系统 Download PDF

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Publication number
WO2020063159A1
WO2020063159A1 PCT/CN2019/100489 CN2019100489W WO2020063159A1 WO 2020063159 A1 WO2020063159 A1 WO 2020063159A1 CN 2019100489 W CN2019100489 W CN 2019100489W WO 2020063159 A1 WO2020063159 A1 WO 2020063159A1
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WO
WIPO (PCT)
Prior art keywords
light source
light
lens
array
fly
Prior art date
Application number
PCT/CN2019/100489
Other languages
English (en)
French (fr)
Inventor
胡飞
余新
张贤鹏
郭祖强
李屹
Original Assignee
深圳光峰科技股份有限公司
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Publication of WO2020063159A1 publication Critical patent/WO2020063159A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light
    • 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
    • G03B21/12—Projectors or projection-type viewers; Accessories therefor adapted for projection of either still pictures or motion pictures
    • 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
    • G03B21/2013—Plural light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • 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
    • G03B21/208—Homogenising, shaping of the illumination light

Definitions

  • the present invention relates to the field of optics, and in particular, to a light source system and a projection system including the light source system.
  • the high dynamic range (HDR) projection system can increase the contrast and peak brightness of the projector output, so that the bright and dark fields in the picture can display rich grayscale information, which greatly improves the picture effect and the viewing experience of the audience.
  • the method for realizing HDR projection display in the prior art is to use a method of generating a spot array by using a square rod array to increase the uniformity of the area illumination light field.
  • the square rod array is difficult to process and is not suitable for large-scale mass production.
  • the alignment accuracy of the square rod and the light source needs to be considered, and the square rod is easily damaged, which affects the quality of the projection system.
  • the present invention provides a light source system capable of overcoming the above problems and a projection system including the light source system.
  • the light source system and the projection system of the present invention can achieve high dynamic display.
  • a light source system includes: a light source, an optical component, and a control unit; the light source includes a light source array formed by a plurality of light source units; the control unit is used to independently control each of the light source units;
  • the optical component includes a fly-eye lens component and a lens array sequentially arranged on the light path of the light source;
  • the fly-eye lens component includes a fly-eye lens pair or a single fly-eye lens;
  • the lens array includes a plurality of lens units arranged in an array, each The lens units correspond to at least one light source unit.
  • a projection system includes a light source system, a spatial light modulator on a light path of the light source system and a lens system on a light path of the spatial light modulator, wherein: the control unit and the The light source is electrically connected to the spatial light modulator, and the lens system is configured to project a light field modulated by the spatial light modulator onto a projection screen.
  • the light source system provided by the present invention can independently control each of the light source units to achieve local dimming of the light source through a control unit, and the light beam emitted by the light source unit directly passes through the fly-eye lens assembly.
  • the lens array located in the light-emitting direction of the fly-eye lens assembly separate the light source to form an independent light source unit, and then control the independent light source unit to achieve high dynamic range display.
  • the optical device of the light source system of the present invention is simple to process, thereby simplifying the process.
  • FIG. 1 is a schematic structural diagram of a light source system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram of a projection system according to a preferred embodiment of the present invention.
  • FIG. 3 is a detailed structural diagram of a second embodiment of the projection system shown in FIG. 2.
  • FIG. 4 is a schematic diagram of a light field distribution formed when the light source unit is fully turned on.
  • FIG. 5 is a schematic diagram of a light field distribution when one of the light source units is turned off.
  • FIG. 6 is a schematic diagram showing the relationship among the size of the illumination light field, the size of the rectangular spot, and the spot gap.
  • FIG. 7 is a working flowchart of the projection system provided in FIG. 2.
  • FIG. 8 is a detailed structural diagram of a third embodiment of the projection system shown in FIG. 2.
  • FIG. 9 is a detailed structural diagram of a fourth embodiment of the projection system shown in FIG. 2.
  • FIG. 10 is a detailed structural diagram of a fifth embodiment of the projection system shown in FIG. 2.
  • FIG. 1 is a light source system 1 provided by the present invention.
  • the light source system 1 is used as a light source of a projection system to generate a high dynamic range picture.
  • the light source system 1 includes a light source 2, an optical component 20, and a control unit 3.
  • the light source 2 includes a light source array formed by a plurality of light source units 10.
  • Each light source unit 10 is independently controllable.
  • each light source unit 10 may be controlled by the control unit 3 to be in an on state, an off state, and / or a current / voltage intensity of each of the light source units 10 to be emitted with different brightness.
  • a plurality of the light source units 10 form a light source array with an aspect ratio similar to a projection screen.
  • the light source units 10 are arranged in an M * N array, and the aspect ratio of the array shape is similar to the aspect ratio of the projection screen.
  • the aspect ratio of the light source 2 is the same as the aspect ratio of the projection screen. Setting the aspect ratio of the light source 2 in this way can minimize the waste of light emitted by the light source.
  • the aspect ratio of the projected image can be 4: 3 or 16: 9.
  • the light source unit 10 is preferably a solid-state light source.
  • the solid-state light source may include a semiconductor laser, a fiber laser, or any combination thereof, or a non-laser light source such as a light emitting diode (LED).
  • the laser or LED may be solid-state light sources with different wavelengths or the same wavelength.
  • the spatial brightness distribution of the light beam emitted by each light source unit 10 only changes the spatial grayscale distribution of the image light, and does not change the color gamut spatial distribution of the image light, thereby ensuring that the intensity distribution of the three primary color spaces remains unchanged. , Thereby ensuring the uniformity of the color of the projected picture.
  • the optical component 20 includes a fly-eye lens component 22 and a lens array 23 which are sequentially disposed on the light path of the light source 2.
  • the fly-eye lens assembly 22 includes a fly-eye lens pair or a single fly-eye lens.
  • the fly-eye lens assembly 22 is used for uniformizing and shaping, and the shaping can form a spot shape with a predetermined shape, for example, rectangular or square.
  • the fly-eye lens assembly 22 can shape an elliptical or circular Gaussian light spot projected thereon into a square light spot with a fixed interval and emit the light from its exit surface.
  • the fly-eye lens assembly 22 is a single fly-eye lens, a single double-eye lens, or a double single-eye lens.
  • the single-lens double-eye lens means that a plurality of microlenses 222 are provided on two opposite surfaces of the single-lens lens.
  • the double-lens single fly-eye lens includes two fly-eye lenses 220 arranged in a mirror image.
  • Each fly-eye lens 220 is formed by a plurality of micro-lenses 222 in an array.
  • the micro-lenses 222 of the two fly-eye lenses 220 are arranged away from each other, and the two corresponding micro-lenses 222 are arranged back and forth on the optical path in the two fly-eye lenses 220.
  • the shapes are the same, one-to-one correspondence.
  • the pitch of the two fly-eye lenses 220 is equal to the focal length of a single microlens 222.
  • the former microlens (complex eye) 222 can be imaged on the latter microlens 222 (complex eye), and even if the light source obtained is matched with the shape of the microlens 222.
  • the shape of the microlens 222 is preferably rectangular.
  • the shape of the light spot after passing through the fly-eye lens assembly 22 is rectangular, which can more closely match the shape of the display area, and the distance and gap between the light spots can be more easily controlled. In this way, the light caused by the mismatch between the light spot shape and the projection shape can be reduced loss.
  • the display area is a square or other specific shape
  • the shape of the light spot emitted by the fly-eye lens assembly can also be matched with the shape of the display area by changing to the shape of a microlens.
  • the distance, size, and shape of the light spots in the light spot array are determined by the focal length, size, and shape of the single microlens 222 of the fly-eye lens assembly 22 and the focal length of the lenses in the corresponding lens array. technical problem.
  • the lens array 23 includes a plurality of lens units arranged in an array, and each of the lens units corresponds to at least one light source unit 10. In this embodiment, each of the lens units corresponds to one of the light source units 10. That is, the lens array 23 also forms an M * N array. The optical axis of each lens unit is parallel to the optical axis of each of the light source units 10. The lens array 23 is used for focusing the light beams emitted by the fly-eye lens assembly 22 to form a spot array with a fixed interval in space.
  • the optical component 20 further includes a collimating optical device 21 located on an optical path of the light source 2.
  • the collimating optical device 21 is located between the light source 2 and the fly-eye lens assembly 22.
  • the collimating optical device 21 is a collimating lens array, and the collimating lens array is used to collimate the light beams emitted from the light source unit 10 into M * N near-parallel light beams.
  • the collimating optical device 21 corresponds to the light source array on a one-to-one basis, and the optical axes are coincident. That is, the collimating lenses included in the collimating optics 21 are also arranged in an M * N array, and each collimating lens corresponds to a light source unit 10.
  • the optical component 20 further includes a wavelength conversion device 25.
  • the wavelength conversion device is located on an optical path behind the lens array 23.
  • the wavelength conversion device 25 is a transmission-type wavelength conversion device or a reflection-type wavelength conversion device.
  • the wavelength conversion device 25 receives light incident from the lens array 23 and emits laser light.
  • the wavelength conversion device 25 can rotate at a high speed at a constant rate, and includes a substrate and a wavelength conversion layer.
  • the substrate is used to carry the wavelength conversion layer, and the wavelength conversion layer may be a phosphor capable of generating broad-spectrum light after being excited.
  • the wavelength conversion device 25 can be driven to perform a circular motion, so that a light spot formed on the wavelength conversion layer acts on the wavelength conversion layer along a predetermined path, and is converted into visible light of different wavelengths.
  • the wavelength conversion layer may be divided into one or more sections.
  • the plurality of sections may specifically be three sections, four sections, six sections, and the like.
  • Each section can be provided with a phosphor, and different phosphors can be used to convert incident light into visible light of different wavelengths.
  • the three-segment wavelength conversion layer can be used to convert blue light into red, green, and blue visible light.
  • the four-segment wavelength conversion layer can be used to convert blue excitation light into red, green, blue, and white visible light.
  • the six-segment wavelength conversion layer can be used to convert blue light into red, green, blue, red, green, and blue visible light.
  • the light source system 1 includes a light source 2 including a light source array formed by a plurality of light source units 10, and each light source unit 10 can be independently controlled to be bright or dark or / and turned on and off to achieve locality. Local dimming; the light beam emitted by the light source 2 directly passes through the fly-eye lens assembly 22 and the lens array 23 located in the light-emitting direction of the fly-eye lens assembly 22, and the fly-eye lens assembly 22 can project the light spot projected thereon
  • the lens array 23 is used to focus the light beams emitted from the fly-eye lens assembly 22 to form a light spot array with a fixed interval in order to prevent the inconsistencies in the spacing between the light spots from being affected. For a projection effect, when the light source system 1 is used as a light source of a projection system, a high dynamic range display can be realized.
  • FIG. 2 is a block diagram of a projection system 100 provided by a second embodiment of the present invention
  • FIG. 3 is a schematic diagram of a specific structure of the projection system 100 provided by the second embodiment of the present invention.
  • the projection system 100 includes a light source system 1 a, a spatial light modulator 4, and an optical lens 5.
  • the structure of the light source system 1a provided in the second embodiment is basically the same as the structure of the light source system 1 provided in FIG. 1, and the difference is mainly that the structure of the optical component 20a of FIG. 3 and the optical component 20 of FIG. 1 are somewhat different.
  • the optical component 20a in addition to the collimating optical device 21, the fly-eye lens assembly 22, the lens array 23, and the wavelength conversion device 25, the optical component 20a further includes a first relay lens group 24, and light receiving The relay lens group 26, the second relay lens group 27, and the light combining device 28.
  • the first relay lens group 24 is disposed between the lens array 23 and the wavelength conversion device 25.
  • the first relay lens group 24 is composed of one or more convex lenses and / or one or more concave lenses.
  • the first relay lens group 24 is formed by three plano-convex lenses arranged in sequence on the light path of the light output of the lens array 23, and the convex surfaces of the two plano-convex lenses close to the lens array 23 are convex.
  • the convex surfaces of the plano-convex lens far from the lens array 23 are disposed facing away from the lens array 23.
  • Plano-convex mirrors can vary in size to meet different beam processing requirements.
  • the first relay lens group 24 is configured to relay the square light spot emitted by the optical component 20 to the wavelength conversion device 25.
  • the first relay lens group 24 can also perform a function of compressing a light spot, and compressing a light beam emitted from the lens array 23 before projecting it, thereby ensuring uniformity of the light spot.
  • the light receiving relay lens group 26 is disposed in a light emitting direction of the wavelength conversion device 25.
  • the light receiving relay lens group 26 is configured to collect and project the primary color light converted by the wavelength conversion device 25.
  • the light receiving relay lens group 26 is composed of a convex lens.
  • the second relay lens group 27 is disposed in a light emitting direction of the light receiving relay lens group 26.
  • the second relay lens group 27 is composed of one or more convex lenses and / or one or more concave lenses.
  • the second relay lens group 27 is composed of two plano-convex lenses, and the convex surfaces of the two plano-convex lenses are opposite to each other.
  • none of the first relay lens group 24, the wavelength conversion device 25, the light receiving relay lens group 26, and the second relay lens group 27 is projected thereon. Light spot distribution shape.
  • the light combining device 28 is located in a light emitting direction of the second relay lens group 27.
  • the light combining device 28 receives the light beam from the second relay lens group 27 and combines the light.
  • the spatial light modulator 4 is disposed on a light combining light path of the light combining device 28.
  • the optical lens 5 is disposed in a light emitting direction of the spatial light modulator 4.
  • the spatial light modulator 4 may be a digital micromirror device (DMD) spatial light modulator, a reflective liquid crystal panel (Lcos) spatial light modulator, or an LCD spatial light modulator. Under the control of the control unit 3, the spatial light modulator 4 modulates a light beam projected on its surface to obtain image light.
  • DMD digital micromirror device
  • Los reflective liquid crystal panel
  • LCD spatial light modulator Under the control of the control unit 3, the spatial light modulator 4 modulates a light beam projected on its surface to obtain image light.
  • the spatial light modulator 4 modulates a light beam projected on the spatial light modulator 4 to obtain image light.
  • the optical lens 5 is configured to project a display screen according to the image light.
  • FIG. 4-6 is a rectangular illumination spot array formed on the spatial light modulator 4, and the light spots generated by the four light source units 10 are used as an example for illustration.
  • FIG. 4 is a schematic diagram of a light spot generated by the projection system 1 provided in FIG. 2.
  • FIG. 5 is a schematic diagram of a light spot array when one light source unit 10 is turned off. Therefore, the current / voltage intensity or on and off of each light source unit 10 can be controlled independently to achieve local dimming.
  • FIG. 6 is a schematic diagram showing the relationship between the size of the illumination light field, the size of the light spot, and the gap between the light spots.
  • the pitch, size and size of the light spots in the light spot array can be controlled to achieve uniformity of the illumination light field.
  • the illumination light field of the light source 2 needs to cover all areas of the spatial light modulator 4, so the ratio of Dx and Dy can be the same as the aspect ratio of the spatial light modulator 4, so that the light source 2 is formed.
  • the light source array is adapted to the required spatial light modulator 4.
  • ⁇ x and ⁇ y represent the horizontal and vertical dimensions of the gap between adjacent rectangular light spots, respectively.
  • the value of ⁇ x ranges from 5% to 70% of dx, and the value of ⁇ y ranges from 5% to 70% of dy. Satisfying this condition can prevent the gap between the light spots from becoming too large or overlapping between the light spots, so that a uniform illumination light spot and screen contrast can be formed on the spatial light modulator 4.
  • the working principle of the projection system 100 of the present invention is:
  • Step 401 Input an image to be displayed into the projection system 100.
  • Step 402 The control unit 3 receives the image to be displayed.
  • Step 403 partition the light source 2 and divide the image according to the light source partition to obtain multiple image partitions.
  • the image may be divided according to the number of the light source units 10 included in the light source 2 to obtain multiple image partitions.
  • the number of the light source units 10 may correspond to the number of the image partitions on a one-to-one basis.
  • Step 404 The control unit 3 is further configured to calculate a peak brightness of each image partition according to the image to be displayed.
  • Step 405 Generate a control signal for each light source unit 10 that needs to be dimmed according to the peak brightness of the image partition.
  • Step 406 feedback the light source control signal to the light source 2 and control the on / off of each light source unit 10 and the light emission brightness of each light source unit 10 according to the control signal.
  • Step 407 The control unit 3 also predicts the illuminance distribution formed by the light source 2 according to the control signals that need to be dimmed for each image partition.
  • Step 408 The illumination distribution is compared with the original image data to generate a compensation control signal.
  • Step 409 The control unit 3 modulates the brightness corresponding to the light beam emitted by the light source 2 according to the compensation control signal to obtain image light to be projected onto the spatial light modulator, and then the projection is displayed with high dynamics through the optical lens 5.
  • FIG. 8 is a projection system 200 provided by a third embodiment of the present invention.
  • the projection system 200 provided by the third embodiment is basically the same as the projection system provided by the second embodiment, that is, the projection system 200 includes a light source system 1b, a spatial light modulator 4, and an optical lens 5.
  • the light source system 1b includes a light source 2, an optical component 20b, and a control unit 3. The difference is that the structure of the optical module 20b of FIG. 6 and the optical module 20a of FIG. 3 are somewhat different.
  • the optical component 20a also includes the collimating optical device 21, the fly-eye lens component 22, the lens array 23, a first relay lens group 24, a wavelength conversion device 251, a light receiving relay lens group 26, a first Two relay lens groups 27 and a light combining device 28.
  • the wavelength conversion device 251 included in the optical component 20b is a reflection-type wavelength conversion device, and the optical component 20b relays the light spot from the wavelength conversion device 251 to the light reception smoothly in order to make the light spot smooth.
  • the optical component 20 b further includes a light guide element 29 and a third relay lens group 30.
  • the third relay lens group 30 is disposed opposite to the first relay lens group 24.
  • the light guide element 29 is disposed on an optical path between the first relay lens group 24 and the third relay lens group 30.
  • the light guide element 29 includes a filter having a center diaphragm and an edge diaphragm.
  • the center diaphragm and the edge diaphragm may be integral diaphragms or separate diaphragms.
  • the central film of the filter transmits the light beam from the unit first relay lens group 24, and the edge film of the filter is a reflective film.
  • the edge film reflects visible light converted by the wavelength conversion device 25.
  • the central film of the filter is blue-transparent and yellow, and the edge film of the filter is a reflective film.
  • the third relay lens group 30 is composed of one or more convex lenses and / or one or more concave lenses.
  • the third relay lens group 30 includes three lenses, including a plano-convex mirror facing the light guide element 29 and two concave-convex mirrors facing the wavelength changing device 251.
  • the square light spot array emitted from the optical component 20 is relayed to the light guide element 29 through the first relay lens group 24, transmitted through the light guide element 29, and passed through the third relay lens group. 30 is guided into the wavelength conversion device 251.
  • the wavelength conversion device 251 converts and emits visible light of another wavelength.
  • the light beam emitted from the wavelength conversion device 251 passes through the third relay lens group 30 and is then reflected by the edge diaphragm of the light guide element 29 to be received by the light receiving relay lens group 26. .
  • the light path after passing through the light-receiving relay lens group 26 is the same as the light path after the light-receiving relay lens group 26 in the projection system 100 provided in the first embodiment, and details are not described herein again.
  • FIG. 9 is a projection system 300 provided by a fourth embodiment of the present invention.
  • the projection system 300 provided by the fourth embodiment is basically the same as the projection system 100 provided by the second embodiment, that is, the projection system 300 includes a light source system 1c, a spatial light modulator 4, and an optical lens 5.
  • the light source system 1c includes a light source 2, an optical component 20c, and a control unit 3.
  • the difference is that the structure of the optical module 20d in FIG. 8 and the optical module 20c in FIG. 7 are slightly different.
  • the optical component 20d includes the collimating optical device 21, the fly-eye lens component 22, the lens array 23, the first relay lens group 24, the wavelength conversion device 25, the light receiving relay lens group 26, and the first Two relay lens groups 27 and a light combining device 28.
  • the optical component 20 c further includes a light spot compression lens array 31 disposed between the light source 2 and the collimating optical device 21.
  • the light spot compression lens array 31 may be an array of mirrors or an array of positive and negative lenses.
  • the light spot compression lens array 31 includes a plano-convex mirror and a plano-convex mirror located in the light emitting direction of the light source, and the convex surface of the plano-convex mirror and the concave surface of the plan-convex mirror are directly opposite.
  • the light spot compression lens array 31 receives a light spot emitted from the light source 2 and compresses the light spot to obtain a light spot array with a smaller area, so as to avoid overlapping between the light spots and causing uneven light emission.
  • the light spot compression lens array 31 is then subjected to uniform light treatment by the optical component 20 to obtain a uniform light spot array.
  • FIG. 10 is a projection system 400 provided by a fifth embodiment of the present invention.
  • the projection system 400 provided by the fifth embodiment is basically the same as the projection system 300 provided by the fourth embodiment, that is, the projection system 400 includes a light source.
  • System 1d spatial light modulator 4 and optical lens 5.
  • the light source system 1d includes a light source 2, an optical component 20d, and a control unit 3. The difference is that the structure of the optical module 20d of Fig. 8 is slightly different from that of the optical module 20c of Fig. 7.
  • the optical component 20d further includes a diffusion sheet 32 disposed between the light receiving relay lens group 26 and the second relay lens group 27.
  • the scattering sheet 32 is used for further homogenizing the light beams of the light receiving relay lens group 26 to obtain a uniform light spot. It can be understood that when the pitch of the illumination spot emitted from the lens array 23 matches the diffusion effect of the wavelength conversion device 25 on the spot, and the spot emitted from the wavelength conversion device 25 is already a uniform spot, the diffusion sheet 32 may be omitted.
  • each light source unit included in the light source includes 10 can be independently controlled for its brightness and / or on / off to achieve local dimming; the light beam emitted by the light source 2 directly passes through the fly-eye lens assembly 22 and the lens array 23 in the light-emitting direction of the fly-eye lens assembly 22, The light sources are separated to form an independent light source unit 10, and the independent light source unit 10 is controlled to achieve high dynamic range display.
  • the optical device of the light source system of the present invention is simple to process, thereby simplifying the process.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

一种光源系统（1、1a、1b、1c、1d），其包括：光源（2）、光学组件（20、20a、20b、20c、20d）和控制单元（3）；光源（2）包括由多个光源单元（10）形成的光源阵列；控制单元（3）用于对每个光源单元（10）进行独立控制；光学组件（20、20a、20b、20c、20d）包括依次设置在光源光路上的复眼透镜组件（22）和透镜阵列（23）；复眼透镜组件（22）包括复眼透镜对或单复眼透镜；透镜阵列（23）包括多个阵列排布的透镜单元，每个透镜单元对应至少一个光源单元（10）。

Description

光源系统及投影系统 技术领域
本发明涉及光学领域，尤其涉及一种光源系统及包括所述光源系统的投影系统。
背景技术
高动态范围(HDR)投影系统能够增加投影机输出的对比度和峰值亮度，使得画面中的亮场和暗场部分都能显示丰富的灰阶信息从而大大提高画面的效果和观众的观影体验。现有技术中实现HDR投影显示的方法是利用方棒阵列产生光斑阵列的方法来增加区域照明光场的均匀性。但是方棒阵列加工困难，不适合大规模批量生产，且在组装形成投影系统时，需要考虑方棒与光源的对位精准度、且容易造成方棒受损，而影响投影系统的品质。
发明内容
有鉴于此，本发明提供一种能克服上述问题的光源系统及包括有所述光源系统的投影系统，本发明的光源系统和投影系统能够实现高动态显示。
一种光源系统，包括：光源、光学组件和控制单元；所述光源包括由多个光源单元形成的光源阵列；所述控制单元用于对每个所述光源单元进行独立控制；
所述光学组件包括依次设置在所述光源光路上的复眼透镜组件和透镜阵列；所述复眼透镜组件包括复眼透镜对或单复眼透镜；所述透镜阵列包括多个阵列排布的透镜单元，每个所述透镜单元对应至少一个光源单元。
一种投影系统，所述投影系统包括光源系统，以及位于所述光源系统出光光路上的空间光调制器以及位于所述空间光调制器光路上的镜头系统，其中： 所述控制单元与所述光源及所述空间光调制器电连接，所述镜头系统用于将所述空间光调制器调制的光场投射到投影屏幕上。
与现有技术相比较，本发明提供的光源系统通过控制单元能对每个所述光源单元进行独立控制以实现光源的局部调光，所述光源单元发出的光束发出的光束直接经过复眼透镜组件和位于所述复眼透镜组件出光方向上的透镜阵列，对光源进行分离形成独立的光源单元，再通过对独立的光源单元进行控制，从而实现高动态范围显示。同时，本发明的光源系统的光学器件加工简单，从而简化工艺。
附图说明
图1是本发明第一实施例提供的光源系统的结构示意图。
图2是本发明一较佳实施例的投影系统的方框示意图。
图3是图2所示投影系统第二实施例的具体结构示意图。
图4是光源单元全开时形成的光场分布示意图。
图5关闭其中一个光源单元时的光场分布示意图。
图6是照明光场的尺寸、矩形光斑尺寸与光斑间隙之间的关系示意图。
图7是图2提供的投影系统的工作流程图。
图8是图2所示投影系统第三实施例的具体结构示意图。
图9是图2所示投影系统第四实施例的具体结构示意图。
图10是图2所示投影系统第五实施例的具体结构示意图。
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1，图1是本发明提供的光源系统1，所述光源系统1用于作为投影系统的光源，以产生高动态范围的画面。所述光源系统1包括光源2、光学组件20和控制单元3。
所述光源2包括由多个光源单元10形成的光源阵列。每个光源单元10是可被独立控制的。在本实施例中，每个光源单元10可以被所述控制单元3控制而处于开状态、关状态和/或控制每个所述光源单元10的电流/电压强度以发出具有不同亮度。
优选地，多个所述光源单元10以近似于投影画面的长宽比形成光源阵列。在本实施方式中，光源单元10排列成M*N的阵列，且该阵列形状的长宽比近似于投影画面的长宽比。
优选的，光源2的长宽比与投影画面的长宽比相同。如此设置光源2的长宽比，能够最大限度的减少光源发出的光的浪费。一般情况下，投影画面的长宽比可以是4：3或者16：9。
优选地，所述光源单元10优选为固态光源。所述固态光源可以包括半导体激光器、光纤激光器或者二者的任意组合或者为发光二级管(LED)等非激光光源。激光器或者LED可以为波长不同或波长相同的固态光源。在本实施例中，每个光源单元10所发出的光束的空间亮度分布只改变图像光的空间灰阶分布，而不改变图像光的色域空间分布，因此保证了三原色空间的强度分布不变，从而保证了投影画面颜色的均匀性。
所述光学组件20包括依次设置在所述光源2出光光路上的复眼透镜组件22和透镜阵列23。
所述复眼透镜组件22包括复眼透镜对或单复眼透镜。所述复眼透镜组件22用于匀光和整形，整形可以形成预定形状的光斑形状，例如矩形、方形。在本实施方式中，所述复眼透镜组件22能将投射在其上的椭圆形或圆形呈高斯分布的光斑整形为有固定间隔的方形光斑并从其的出射面出射。
优选地，所述复眼透镜组件22为单复眼透镜、单片双复眼透镜或双片单复眼透镜。单片双复眼透镜是指在单片透镜的相背两个表面设置多个微透镜222。
更优选地，所述双片单复眼透镜包括两个镜像设置的复眼透镜220。每个复眼透镜220由多个微透镜222形成阵列排列，两个复眼透镜220中的微透镜222朝背离彼此方向设置，且两个复眼透镜220中光路上前后设置的两个对应的微透镜222形状相同、一一对应。
更优选地，两个复眼透镜220的间距等于单个微透镜222的焦距。这样可以使得前一个微透镜(复眼)222在后一个微透镜222(复眼)上成像，也即使得出射的光源与微透镜222的形状匹配。
更优选地，微透镜222的形状优选为矩形。使得经过所述复眼透镜组件22后的光斑形状为矩形，能更匹配显示区域的形状，且光斑之间的间距和缝隙也更容易控制，如此，可以减少光斑形状与投影形状不匹配导致的光损失。当然如果显示区域为方形或其他特定形状，也可以通过改变为微透镜的形状来使所述复眼透镜组件出射的光斑形状匹配所述显示区域的形状。
也即，光斑阵列中的光斑的间距、尺寸大小、形状由复眼透镜组件22的单个微透镜222的焦距、大小和形状以及对应透镜阵列中透镜的焦距决定，如此来实现光源的出光均匀化的技术问题。
所述透镜阵列23包括多个阵列排布的透镜单元，每个所述透镜单元对应至少一个光源单元10。在本实施方式中，每个所述透镜单元对应一个所述光源单元10。也即所述透镜阵列23也形成M*N的阵列。且每个透镜单元的光轴与每个所述光源单元10的光轴平行。所述透镜阵列23用于对复眼透镜组件22出射的光束进行聚焦以形成空间具固定间隔的光斑阵列。
请继续参阅图1，优选地，所述光学组件20还包括位于光源2的光路上的准直光学器件21。所述准直光学器件21位于所述光源2和所述复眼透镜组件22之间。
更优选地，所述准直光学器件21为准直透镜阵列，所述准直透镜阵列用于将所述光源单元10发出的光束准直成M*N束近平行光束。
更优选地，所述准直光学器件21与所述光源阵列一一对应，且光轴重合。也即所述准直光学器件21包括的准直透镜也排列为M*N的阵列，每一个准直透镜对应一个光源单元10。
优选地，所述光学组件20还包括波长转换装置25。所述波长转换装置位于所述透镜阵列23之后的光路上。所述波长转换装置25为透射式波长转换装置或者反射式波长转换装置。所述波长转换装置25接收所述透镜阵列23入射的光，并出射受激光。所述波长转换装置25能以恒定速率高速转动，其包含基板和波长转换层。所述基板用于承载所述波长转换层，所述波长转换层可以为受激发后能够产生宽谱光的荧光粉。所述波长转换装置25可以被驱动而做圆周运动，从而光束在波长转换层上形成的光斑沿着预定路径作用于波长转换层，而被转换为不同波长的可见光。
其中，所述波长转换层可分为一个或多个区段。所述多个区段具体可为三区段、四区段、六区段等。每个区段可设置一荧光粉，不同的荧光粉可用于将入射光转换成不同波长的可见光。例如，所述三区段的波长转换层可用于将蓝色的光转换成红色、绿色、及蓝色的可见光。所述四区段的波长转换层可用于将蓝色的激发光转换成红色、绿色、蓝色、及白色的可见光。所述六区段的波长转换层可用于将蓝色的光转换成红色、绿色、蓝色、红色、绿色、及蓝色的可见光。
本发明提供的光源系统1，其包括光源2，所述光源2包括由多个光源单元10形成的光源阵列，每个光源单元10能被独立控制其亮暗或/及开、关以实现局部调光(local dimming)；所述光源2发出的光束直接经过复眼透镜组件22 和位于所述复眼透镜组件22出光方向上的透镜阵列23，所述复眼透镜组件22能将投射在其上的光斑整形为有固定间隔的光斑并从其的出射面出射，所述透镜阵列23用于对复眼透镜组件22出射的光束进行聚焦以形成空间具固定间隔的光斑阵列，防止光斑间的间距不一致而影响投影效果，当所述光源系统1用作投影系统的光源时，能实现高动态范围显示。
请参阅图2-3，其中，图2是本发明第二实施例提供的投影系统100的方框示意图，图3是本发明第二实施例的提供的投影系统100的具体结构示意图。所述投影系统100包括光源系统1a、空间光调制器4及光学镜头5。
在第二实施例提供的光源系统1a与图1提供的光源系统1的结构基本相同，其不同之处主要在于：图3的光学组件20a与图1的光学组件20的结构有些不同。在本实施方式中，光学组件20a除了包括所述准直光学器件21、所述复眼透镜组件22、所述透镜阵列23以及波长转换装置25之外还包括第一中继透镜组24、收光中继透镜组26、所述第二中继透镜组27以及合光装置28。
所述第一中继透镜组24设置在所述透镜阵列23与所述波长转换装置25之间。所述第一中继透镜组24由一个或多个凸透镜及/或一个或多个凹透镜组成。在本实施例中，所述第一中继透镜组24由三个平凸透镜依次排列形成在所述透镜阵列23的出光光路上，且靠近所述透镜阵列23的两个平凸镜的凸面相背对设置，远离所述透镜阵列23的那个平凸镜的凸面是朝向所述透镜阵列23设置的。平凸镜的尺寸可以各不相同，以达到不同的光束处理需求。所述第一中继透镜组24用于将所述光学组件20发出的方形光斑中继至所述波长转换装置25上。在本实施方式中，第一中继透镜组24还能起到对光斑进行压缩的作用，将从所述透镜阵列23出射的光束进行压缩后再投射，确保光斑的均匀化。所述收光中继透镜组26设置在所述波长转换装置25的出光方向。所述收光中继透镜组26用于收集通过所述波长转换装置25转换后的基色光并投射。在本实施例中，所述收光中继透镜组26由一个凸透镜组成。
所述第二中继透镜组27设置在所述收光中继透镜组26的出光方向。所述第二中继透镜组27由一个或多个凸透镜及/或一个或多个凹透镜组成。在本实施例中，所述第二中继透镜组27由两个平凸镜组成，两个平凸镜的凸面相背对设置。
在本实施例中，所述第一中继透镜组24、所述波长转换装置25、所述收光中继透镜组26及所述第二中继透镜组27皆不改变投射在其上的光斑的分布形状。
所述合光装置28位于所述第二中继透镜组27的出光方向上，所述合光装置28接收第二中继透镜组27的光束并进行合光。
所述空间光调制器4设置在所述合光装置28的合光光路上。所述光学镜头5设置在所述空间光调制器4的出光方向上。可以理解，所述空间光调制器4可以为数字微镜装置(DMD)空间光调制器、反射式液晶面板(Lcos)空间光调制器或LCD空间光调制器等。在所述控制单元3的控制下，所述空间光调制器4对投射其表面上的光束进行调制来获得图像光。
所述空间光调制器4对投射在所述空间光调制器4上的光束进行调制来获得图像光。所述光学镜头5用于根据所述图像光投影显示画面。
请同时参阅图4-6，图4-6是在空间光调制器4上形成的矩形照明光斑阵列，且是以4个光源单元10产生的光斑为例进行示意的。图4为图2提供的投影系统1产生的光斑示意图。图5为关闭一个光源单元10的情况下的光斑阵列示意图。从而，可以独立控制每个光源单元10的电流/电压强度或/及开、关以实现局部调光。图6为照明光场的尺寸、光斑的尺寸、与光斑之间的间隙之间的关系示意图。也即可以通过控制复眼透镜组件22包括的多个微透镜222的尺寸大小及间距，来控制光斑阵列中光斑的间距、大小及尺寸以实现照明光场的均匀化。具体地，在投影系统100中，光源2的照明光场需要覆盖空间光调制器4的所有区域，因而Dx和Dy的比例可以和空间光调制器4的长宽比相同，以使光源2形成的光源阵列适配所需的空间光调制器4。
每个光源单元10形成一个光斑，所述光斑的宽度W和高度H满足：W＝f 2/(f 1/w)，H＝f 2/(f 1/h)，其中，定义f 1为微透镜的焦距，f 2为透镜单元的焦距，w和h为微透镜的长和宽；而W＝d x-Δx，H＝d y-Δy，其中dx和dy为光源2形成的光斑阵列排布在长和宽方向上的间距，dx＝Dx/N，dy＝Dy/M，Dx和Dy表示了照明光场的长度与宽度N，M分别为所述光斑阵列宽度和长度方向上的数目；Δx与Δy分别表示相邻矩形光斑之间的缝隙在横向及纵向的尺寸。Δx的取值范围为dx的5％～70％,Δy的取值范围为dy的5％～70％。满足此条件，能避免光斑之间的间隙过大，或者光斑之间产生重叠，如此能在空间光调制器4上形成均匀的照明光斑和画面对比度。
请参阅图7，本发明的投影系统100的工作原理是：
步骤401：向投影系统100中输入待显示图像。
步骤402：所述控制单元3接收所述待显示图像。
步骤403：对所述光源2进行分区以及根据光源分区分割图像得到多个图像分区，譬如可以根据光源2包括的光源单元10的数量来分割图像以得到多个图像分区。光源单元10的数量可以与图像分区的数量一一对应。
步骤404：所述控制单元3还用于根据待显示图像计算每个图像分区的峰值亮度。
步骤405：根据图像分区的峰值亮度生成每个光源单元10需要减暗的控制信号。
步骤406：将所述光源控制信号反馈至所述光源2，并根据所述控制信号控制所述光源2的每一个光源单元10的开启/关闭以及每一个光源单元10的发光亮度。
步骤407：所述控制单元3还根据各个图像分区需要减暗的控制信号，预测 光源2形成的光照度分布。
步骤408：所述光照度分布与所述原始图像数据进行比较以产生补偿控制信号。
步骤409：所述控制单元3依据所述补偿控制信号调制所述光源2发出的光束对应的亮度来获得图像光投影至所述空间光调制器，进而通过所述光学镜头5投影显示具高动态范围的画面。
请参阅图8，图8为本发明第三实施例提供的一种投影系统200。第三实施例提供的投影系统200与第二实施例提供的投影系统基本相同，即投影系统200包括光源系统1b、空间光调制器4及光学镜头5。所述光源系统1b包括光源2、光学组件20b、控制单元3。其不同之处在于，图6的光学组件20b与图3的光学组件20a的结构有些不同。所述光学组件20a也是包括所述准直光学器件21、所述复眼透镜组件22、所述透镜阵列23、第一中继透镜组24、波长转换装置251、收光中继透镜组26、第二中继透镜组27及合光装置28。但是，在本实施方式中，所述光学组件20b包括的波长转换装置251为反射式波长转换装置，且所述光学组件20b为了使光斑顺利从所述波长转换装置251中继至所述收光中继透镜组26，所述光学组件20b还包括光引导元件29及第三中继透镜组30。
所述第三中继透镜组30与所述第一中继透镜组24相对设置。所述光引导元件29设置在所述第一中继透镜组24及所述第三中继透镜组30之间的光路上。所述光引导元件29包括具有中心膜片和边缘膜片的滤光片。所述中心膜片和所述边缘膜片可以为一体式膜片或者为各自分离的膜片。所述滤光片的中心膜片透射来自所述单元第一中继透镜组24的光束，所述滤光片的边缘膜片为反射膜片。所述边缘膜片反射所述波长转换装置25所转换的可见光。在本实施例中，所述滤光片的中心膜片透蓝反黄，所述滤光片的边缘膜片为反射膜片。
所述第三中继透镜组30由一个或多个凸透镜及/或一个或多个凹透镜组成。在本实施方式中，所述第三中继透镜组30包括3个透镜，包括朝向光引导元件29的平凸镜，以及朝向波长装换装置251的两个凹凸镜。从所述光学组件20发 出的方形光斑阵列通过所述第一中继透镜组24中继至所述光引导元件29、经过所述光引导元件29的透射、通过所述第三中继透镜组30导向进入所述波长转换装置251。所述波长转换装置251转换并出射另一波长的可见光。从所述波长转换装置251出射的光束再通过所述第三中继透镜组30、然后被所述光引导元件29的边缘膜片进行反射，至被所述收光中继透镜组26收光。通过所述收光中继透镜组26之后的光路与第一实施例提供的投影系统100中所述收光中继透镜组26之后的光路相同，在此不再赘述。
请参阅图9，图9为本发明第四实施例提供的一种投影系统300。第四实施例提供的投影系统300与第二实施例提供的投影系统100基本相同，即投影系统300包括光源系统1c、空间光调制器4及光学镜头5。其中，所述光源系统1c包括光源2、光学组件20c及控制单元3。其不同之处在于：图8的光学组件20d与图7的光学组件20c的结构有些不同。所述光学组件20d除了包括所述准直光学器件21、所述复眼透镜组件22、所述透镜阵列23、第一中继透镜组24、波长转换装置25、收光中继透镜组26、第二中继透镜组27及合光装置28。所述光学组件20c还包括设置在所述光源2与所述准直光学器件21之间的光斑压缩透镜阵列31。所述光斑压缩透镜阵列31可以是反射镜组成的阵列，也可以是正负透镜组成的阵列。在本实施方式中，所述光斑压缩透镜阵列31包括位于光源出光方向上的一个平凸镜以及一个平凹凸镜，所述平凸镜的凸面与所述平凹凸镜的凹面正对设置。所述光斑压缩透镜阵列31接收从所述光源2发出的光斑，并进行压缩以获得面积更小的光斑阵列，以避免光斑之间出现交叠导致出光不均匀。经过光斑压缩透镜阵列31再经过光学组件20的匀光处理以获得均匀的光斑阵列。
请参阅图10，图10为本发明第五实施例提供的一种投影系统400，第五实施例提供的投影系统400与第四实施例提供的投影系统300基本相同，即投影系统400包括光源系统1d、空间光调制器4及光学镜头5。其中，所述光源系统1d包括光源2、光学组件20d、及控制单元3。其不同之处在于：图8的光学 组件20d与图7的光学组件20c的结构有些不同。图8的所述光学组件20d除了包括准直光学器件21、所述复眼透镜组件22、所述透镜阵列23、第一中继透镜组24、波长转换装置25、收光中继透镜组26、第二中继透镜组27、合光装置28以及光斑压缩透镜阵列31。所述光学组件20d还包括设置在所述收光中继透镜组26与第二中继透镜组27之间的散射片32。所述散射片32用于对所述收光中继透镜组26的光束进行进一步的匀化，以得到均匀的光斑。可以理解，当透镜阵列23出射的照明光斑的间距与波长转换装置25对光斑的扩散作用匹配的时候，从波长转换装置25出射的已经是均匀光斑，则所述散射片32可省略。
综上所述，本发明提供的光源系统1、1a、1b、1c及分别由所述光源系统形成的投影系统100、200、300、400，由于光源系统包括光源，光源包括的每个光源单元10能被独立控制其亮暗或/及开、关以实现局部调光；所述光源2发出的光束直接经过复眼透镜组件22和位于所述复眼透镜组件22出光方向上的透镜阵列23，对光源进行分离形成独立的光源单元10，再通过对独立的光源单元10进行控制，从而实现高动态范围显示。同时，本发明的光源系统的光学器件加工简单，从而简化工艺。
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单元或装置也可以由同一个单元或装置通过软件或者硬件来实现。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明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，均同理包括在本发明的专利保护范围内。

Claims (16)

  1. 一种光源系统，其特征在于，包括：光源、光学组件和控制单元；所述光源包括由多个光源单元形成的光源阵列；所述控制单元用于对每个所述光源单元进行独立控制；
    所述光学组件包括依次设置在所述光源光路上的复眼透镜组件和透镜阵列；所述复眼透镜组件包括复眼透镜对或单复眼透镜；所述透镜阵列包括多个阵列排布的透镜单元，每个所述透镜单元对应至少一个光源单元。
  2. 根据权利要求1所述的光源系统，其特征在于，所述光源单元为激光器或发光二极管。
  3. 根据权利要求1所述的光源系统，其特征在于，所述光源包括M*N个光源单元。
  4. 根据权利要求1所述的光源系统，其特征在于，所述光源系统还包括准直光学器件，所述准直光学器件位于所述光源和所述复眼透镜组件之间。
  5. 根据权利要求4所述的光源系统，其特征在于，所述准直光学器件为准直透镜阵列，用于将所述光源发出的光准直成M*N束近似平行的光束。
  6. 根据权利要求5所述的光源系统，其特征在于，所述准直透镜阵列与所述光源阵列一一对应，且所述准直透镜阵列中的每个准直透镜的光轴与每个所述光源单元的光轴重合。
  7. 根据权利要求1所述的光源系统，其特征在于，所述复眼透镜组件为单片双复眼透镜或双片单复眼透镜。
  8. 根据权利要求7所述的光源系统，其特征在于，所述复眼透镜包括多个阵列排布的微透镜，所述单片双复眼透镜或双片单复眼透镜相对的两个复眼透镜的微透镜一一对应。
  9. 根据权利要求8所述的光源系统，其特征在于，一一对应的两个所述微透镜之间的距离等于所述微透镜的焦距。
  10. 根据权利要求8所述的光源系统，其特征在于，所述微透镜为矩形，每 个所述光源单元发出的光经过所述微透镜后形成为矩形光斑。
  11. 根据权利要求1所述的光源系统，其特征在于，所述光源系统还包括波长转换装置，所述波长转换装置位于所述透镜阵列之后的光路上。
  12. 根据权利要求1所述的光源系统，其特征在于，所述控制单元控制每个所述光源单元的开、关，和/或控制每个所述光源单元的电流/电压强度。
  13. 根据权利要求1所述的光源系统，其特征在于，每个所述透镜单元对应一个所述光源单元，且每个透镜单元的光轴与每个所述光源单元的光轴平行。
  14. 根据权利要求10所述的光源系统，其特征在于，所述光斑的宽度W和高度H满足W＝f 2/(f 1/w)和H＝f 2/(f 1/h)，定义f 1为微透镜的焦距，f 2为透镜单元的焦距，w和h为微透镜的长和宽，而W＝d x-Δx，H＝d y-Δy，其中dx和dy为光源单元形成的光斑排布在长和宽方向上的间距，dx＝Dx/N，dy＝Dy/M，Dx和Dy表示了照明光场的长度与宽度，Dx和Dy的比例与空间光调制器的长宽比相同，N，M分别为所述光源阵列宽度和长度方向上的数目；Δx与Δy分别表示相邻矩形光斑之间的缝隙在横向及纵向的尺寸。
  15. 根据权利要求14所述的光源系统，其特征在于，Δx的取值范围为dx的5％～70％,Δy的取值范围为dy的5％～70％。
  16. 一种投影系统，其特征在于：所述投影系统包括光源系统，以及位于所述光源系统出光光路上的空间光调制器以及位于所述空间光调制器光路上的镜头系统，其中：所述光源系统为权利要求1～15任意一项所述的光源系统；所述控制单元与所述光源及所述空间光调制器电连接，所述镜头系统用于将所述空间光调制器调制的光场投射到投影屏幕上。
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