CN105759444B - Static state based on lens array disappears speckle device and laser-projector - Google Patents
Static state based on lens array disappears speckle device and laser-projector Download PDFInfo
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- 230000003068 static effect Effects 0.000 title claims abstract description 48
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims description 44
- 239000013598 vector Substances 0.000 claims description 6
- 230000010354 integration Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 10
- 230000008030 elimination Effects 0.000 description 8
- 238000003379 elimination reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
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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
- G03B21/142—Adjusting of projection optics
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Abstract
Disappear speckle device the present invention provides a kind of static state based on lens array, it is arranged between the laser source of laser-projector and projecting lens, lens array is located at laser source rear, it includes multiple sub-lens of array arrangement, plane where those sub-lens is vertical with optical axis, for dividing the light of laser source injection to generate beamlet；Static phase modulator be located at lens array optical path rear and with lens array location matches, for making beamlet carry mutually independent pattern；Integration lens are located at phase plate array light path rear and the confocal position of lens array, pictcure generator is located at the focal plane of integration lens, the optical path rear of pictcure generator is projecting lens, the sub-light beam convergence for carrying mutually indepedent pattern is superimposed upon the pictcure generator of its focal plane by integration lens, the mutually indepedent pattern that pictcure generator is carried according to beamlet generates the image for carrying mutually indepedent pattern superposition.
Description
Technical Field
The invention relates to the technical field of laser display, in particular to a static speckle eliminating device based on a lens array and a laser projector.
Background
Compared with the traditional display, the laser projection display has the advantages of high brightness, good saturation, wide color gamut and the like. However, because of the high coherence of the laser light source, a speckle phenomenon may occur during projection, which seriously affects the quality of the image. There are various ways to eliminate speckle, which are roughly classified into dynamic and static. The dynamic speckle elimination can bring mechanical vibration, which leads to the increase of the volume and energy consumption of the instrument, for example, by vibrating a Hadamard (Hadamard) matrix phase plate, a plurality of independent patterns with different phase distributions are superposed on a resolution point corresponding to each detection point of each detector within an integration time, so as to achieve the purpose of speckle elimination. By vibrating the phase plate of the hadamard matrix, a plurality of mutually independent phase distribution patterns are generated. However, this method brings mechanical vibration and extra energy loss, increases the size and complexity of the system, and because of the existence of vibration, a part of the phase plate cannot be used within a certain time, reducing the utilization rate of the phase plate. The static speckle dissipation mode of phase modulation is realized by loading different voltages on each sub-lens of the liquid lens array, and the liquid lens array has the defects of complex structure, high manufacturing difficulty, difficulty in miniaturization, high later maintenance cost, need of loading voltage on each sub-lens independently and complex driving circuit.
Therefore, there is a need in the art for a projection optical path for eliminating speckles in a static manner, which has a simple structure and does not require a driving device and power consumption, so as to overcome the above-mentioned disadvantages.
Disclosure of Invention
Technical problem to be solved
In view of the above, the main objective of the present invention is to provide a static speckle reduction device and a laser projector based on a lens array.
(II) technical scheme
The invention provides a static speckle eliminating device based on a lens array, which is arranged between a laser source 1010 and a projection lens 1007 of a laser projector, and comprises: a lens array 1003, a static phase modulator, an integrator lens 1005, and an image generator 1006; the lens array 1003 is located behind the laser source, and includes a plurality of sub-lenses arranged in an array for dividing the light emitted from the laser source to generate sub-beams; the static phase modulator is positioned behind the optical path of the lens array and matched with the position of the lens array, and is used for enabling the sub-beams to carry mutually independent patterns; the integrating lens 1005 is located at a position behind the optical path of the phase plate array and confocal with the lens array, the image generator 1006 is located at a focal plane of the integrating lens, the projection lens 1007 is located behind the optical path of the image generator, the integrating lens 1005 converges and superimposes the sub-beams carrying mutually independent patterns on the image generator 1006 at the focal plane thereof, and the image generator 1006 generates an image carrying mutually independent pattern superimposition according to the mutually independent patterns carried by the sub-beams.
Preferably, the static phase modulator is a phase plate array 1004, which includes a plurality of sub-phase plates arranged in an array, and the plane of the sub-phase plates is perpendicular to the optical axis.
Preferably, the static phase modulator is a spatial light modulator.
Preferably, the lens array 1003 is an N × M lens array composed of sub-lenses, the phase plate array 1004 is composed of N × M sub-phase plates, and the size and arrangement of the sub-phase plates match those of the sub-lenses of the lens array.
Preferably, the sub-phase plates include patterns formed by arranging two matrix units according to row or column vectors of the hadamard matrix, the phase difference of the two matrix units is pi, and the patterns of different sub-phase plates are mutually independent.
Preferably, the phases of the two matrix elements are 0 and pi, respectively.
Preferably, the lens array 1003 is an N × M-order lens array composed of sub-lenses, and the spatial light modulator electrically modulates mutually independent patterns, and the size and arrangement of the patterns are matched with those of the sub-lenses.
Preferably, the pattern is formed by arranging two matrix units according to the row or column vectors of the Hadamard matrix, and the phase difference of the two matrix units is pi.
Preferably, the phases of the two matrix elements are 0 and pi, respectively.
The present invention also provides a laser projector including: a laser source 1010 and a projection lens 1007, the laser source 1010 being configured to generate a laser beam, and any of the above-described static speckle reduction devices being disposed between the laser source 1010 and the projection lens 1007, the projection lens 1007 being configured to project an image onto the screen 1008.
(III) advantageous effects
According to the technical scheme, the static speckle eliminating device based on the lens array and the laser projector have the following beneficial effects:
(1) the static speckle elimination is realized by utilizing the lens array, the integrator lens and the image generator to be matched with the phase plate array or the spatial light modulator, all the components are static components, the structure is simple, and the reliability is high;
(2) extra driving components and energy loss are not needed, the size of the system is reduced, and the complexity of the system is reduced;
(3) all sub-phase plates of the phase plate array are utilized at the same time, and play a role at the same time, so that the utilization rate of the orthogonal matrix phase plate is improved.
Drawings
FIG. 1 is a schematic diagram of a static speckle reduction apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a lens array according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a phase plate array according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a sub-phase plate according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a phase distribution pattern of the sub-phase plate 1 according to an embodiment of the present invention.
[ notation ] to show
1001-laser; 1002-a beam expander; 1003-lens array; 1004-phase plate array; 1005-an integrating lens; 1006-an image generator; 1007-a projection lens; 1008-screen; 1009 — the recipient; 1010-laser source.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, a first embodiment of the present invention provides a static speckle reduction apparatus based on a lens array, which is disposed between a laser source 1010 of a laser projector and a projection lens 1007, and is used for reducing speckle of the laser projector, the static speckle reduction apparatus including: a lens array 1003, a phase plate array 1004, an integrating lens 1005, and an image generator 1006; wherein,
the lens array 1003 is located behind the laser source, and includes a plurality of sub-lenses arranged in an array, and a plane where the sub-lenses are located is perpendicular to the optical axis, and is used for dividing light emitted by the laser source to generate sub-beams;
the phase plate array 1004 is positioned behind the optical path of the lens array and matched with the position of the lens array, and comprises a plurality of sub phase plates arranged in an array manner, and the planes of the sub phase plates are vertical to the optical axis and used for enabling the sub light beams to carry mutually independent patterns;
the integrating lens 1005 is located at a position behind the optical path of the phase plate array and confocal with the lens array, the image generator 1006 is located at a focal plane of the integrating lens, the projection lens 1007 is located behind the optical path of the image generator, the integrating lens 1005 converges and superimposes the sub-beams carrying mutually independent patterns on the image generator 1006 of the focal plane, and the image generator 1006 generates images carrying mutually independent pattern superimposition according to the mutually independent patterns carried by the sub-beams.
The lens array 1003 is an NxM-order lens array composed of sub-lenses, the phase plate array 1004 is composed of NxM sub-phase plates, the size and the arrangement mode of the sub-phase plates are matched with those of the lens array sub-lenses, and the N, M is larger than or equal to 8. The sub-phase plate comprises two patterns formed by arranging matrix units in an orthogonal matrix mode, the phase difference of the two matrix units is pi, and the patterns of different sub-phase plates are mutually independent.
Preferably, as shown in fig. 2 and fig. 3, N and M are 8, that is, the lens array 1003 is an 8 × 8 step lens array composed of 64 sub-lenses, the size of the sub-lens 2001 and 2064 is 4mm × 4mm, and the size of the lens array is 32mm × 32 mm; the phase plate array 1004 is composed of 64 sub-phase plates, and the size of the sub-phase plates 3001 and 3064 is the same as that of the sub-lenses, and the pattern is shown in FIG. 4. Each sub-phase plate is formed by arranging 4um by 4um matrix units according to the row (or column) vectors of the hadamard matrix, and has a matrix pattern with the same order as the hadamard matrix, the phases of the matrix units are respectively 0(4001) or pi (4002), wherein the phase distribution pattern of the sub-phase plate 3001 is shown in fig. 5.
In the static speckle eliminating device based on the lens array according to the first embodiment of the present invention, a light beam generated by the laser source 1010 is incident on the lens array 1003, wherein when an output optical aperture of the laser meets a requirement, the laser source 1010 may only include the laser 1001, otherwise, the laser source 1010 may further include the beam expander 1002; the light beam is divided into 64 sub-beams by the lens array 1003; each sub-beam passes through the phase plate 1004, and each sub-beam carries the phase distribution information of the sub-phase plate pattern corresponding to the sub-beam; the sub-beams are superposed and converged near the focal plane of the integrating lens after passing through the integrating lens 1005, and meanwhile, phase distribution information carried by each sub-beam is superposed and converged near the focal plane of the integrating lens; an image generator 1006 located at the focal plane of the integrator lens generates an image that carries the phase distribution information superimposed by the sub-phase plates; an image is projected on the screen 1008 by the projection lens 1007; the receiver 1009 (for example, human eye) observes the screen 1008, and each resolution point corresponding to the receiver detection point includes superposition of a plurality of mutually independent orthogonal matrix patterns, so that the effect of speckle elimination is achieved, and the speckle contrast can be reduced to 12.5% of the original speckle contrast theoretically.
Therefore, the static speckle eliminating device based on the lens array in the first embodiment of the invention realizes static speckle elimination by using the lens array, the integrator lens and the image generator to match with the orthogonal matrix phase plate, all the components are static components, and the device has simple structure and high reliability; extra driving components and energy loss are not needed, the size of the system is reduced, and the complexity of the system is reduced; all the sub-phase plates of the orthogonal matrix phase plate are utilized at the same time, and play a role simultaneously, so that the utilization rate of the orthogonal matrix phase plate is improved.
For the purpose of brief description, any technical features of the first embodiment that can be applied to the same technical features are described herein, and the same description need not be repeated.
The static speckle-eliminating device comprises: a lens array 1003, a Spatial Light Modulator (SLM), an integrator lens 1005, and an image generator 1006; the spatial light modulator is located behind the optical path of the lens array and matched with the lens array in position, so that the sub-beams carry mutually independent patterns, the structural schematic diagram of the static speckle reduction device in the second embodiment can refer to fig. 1, and only the phase chip array 1004 needs to be replaced by the spatial light modulator.
The lens array 1003 is an N × M order lens array composed of sub-lenses, the spatial light modulator can electrically control and modulate mutually independent patterns, the pattern size and arrangement mode are matched with those of the sub-lenses, the orthogonal matrix pattern is formed by arranging two matrix units in an orthogonal matrix mode, and the phase difference of the two matrix units is pi.
Preferably, the N and M are 16, that is, the lens array 1003 is a 16 × 16 step lens array composed of 256 sub-lenses, the size of the sub-lens is 1mm × 1mm, and the size of the lens array is 16mm × 16 mm; the spatial light modulator modulates mutually independent patterns by matrix units 0 and pi, the patterns are formed by arranging according to row (or column) vectors of a Hadamard matrix and have matrix patterns with the same order as the Hadamard matrix, and the size of the matrix patterns is 1mm x 1 mm.
In the static speckle eliminating device based on the lens array according to the second embodiment of the present invention, a light beam generated by a laser source is incident on the lens array 1003, and the light beam is divided into 256 sub-light beams by the lens array 1003; each sub-beam passes through the spatial light modulator, and each sub-beam carries phase distribution information of a pattern corresponding to the sub-beam; the sub-beams are superposed and converged near the focal plane of the integrating lens after passing through the integrating lens 1005, and meanwhile, phase distribution information carried by each sub-beam is superposed and converged near the focal plane of the integrating lens; an image generator 1006 located at the focal plane of the integrator lens generates an image that carries the phase distribution information superimposed by the sub-phase plates; an image is projected on the screen 1008 by the projection lens 1007; the receiver 1009 observes the screen 1008, and each resolution point corresponding to the receiver detection point includes superposition of a plurality of mutually independent orthogonal matrix patterns, so that the effect of speckle elimination is achieved, and the speckle contrast can be reduced to 6.25% of the original speckle contrast theoretically.
Therefore, the static speckle eliminating device based on the lens array in the second embodiment of the invention realizes static speckle elimination by using the lens array, the integrating lens and the image generator to match with the spatial light modulator, all the components are static components, and the device has simple structure and high reliability; and an additional driving part is not needed, so that the size of the system is reduced, and the complexity of the system is reduced.
The third embodiment of the present invention provides a laser projector including a laser 1001 and a projection lens 1007, the laser 1001 being for generating a laser beam, and the projection lens 1007 being for projecting an image on a screen 1008, and the static speckle reduction device of the first or second embodiment being provided between the laser 1001 and the projection lens 1007.
The laser 1001 may be a single laser or an array of lasers.
When the output light aperture of the laser does not meet the requirement, a beam expander 1002 is arranged between the laser and the static speckle dispersing device and used for enlarging the area of a light source and reasonably controlling the aperture of a light beam according to the requirement.
So far, a lens array based static speckle reduction device and a laser projector according to the present invention have been described in detail. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the various elements are not limited to the specific structures, steps and shapes mentioned in the embodiments, and may be easily modified or replaced by those skilled in the art, for example:
(1) other types of elements may be used for each optical device as long as the same function is achieved;
(2) examples of parameters that include particular values may be provided herein, but the parameters need not be exactly equal to the corresponding values, but may be approximated to the corresponding values within acceptable error tolerances or design constraints;
(3) directional phrases used in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., refer only to the orientation of the attached drawings and are not intended to limit the scope of the present invention;
(4) the embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e. technical features in different embodiments may be freely combined to form further embodiments.
In summary, the static speckle-eliminating device and the laser projector based on the lens array realize static speckle elimination by using the lens array, the integrator lens and the image generator to cooperate with the orthogonal matrix phase plate or the spatial light modulator, all the components are static components, and the device has simple structure and high reliability; extra driving components and energy loss are not needed, the size of the system is reduced, and the complexity of the system is reduced; all the sub-phase plates of the orthogonal matrix phase plate are utilized at the same time, and play a role simultaneously, so that the utilization rate of the orthogonal matrix phase plate is improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A lens array based static speckle reduction apparatus arranged between a laser source (1010) of a laser projector and a projection lens (1007), comprising: a lens array (1003), a static phase modulator (1004), an integrator lens (1005), and an image generator (1006); wherein,
the lens array (1003) is positioned behind the laser source and comprises a plurality of sub lenses arranged in an array and used for dividing light emitted by the laser source to generate sub beams;
the static phase modulator (1004) is positioned behind the optical path of the lens array and matched with the position of the lens array, and is used for enabling the sub-beams to carry mutually independent patterns;
the integrating lens (1005) is located at a position behind a phase plate array light path and confocal with the lens array, the image generator (1006) is located on a focal plane of the integrating lens, the projection lens (1007) is located behind the light path of the image generator, the integrating lens (1005) converges sub-beams carrying mutually independent patterns and superimposes the sub-beams on the focal plane of the image generator (1006), and the image generator (1006) generates an image carrying mutually independent pattern superimposition according to the mutually independent patterns carried by the sub-beams;
the static phase modulator is a phase plate array (1004) which comprises a plurality of sub phase plates arranged in an array; the lens array (1003) is a lens array composed of sub-lenses, and the size and the arrangement mode of the sub-phase plates are matched with those of the sub-lenses of the lens array;
the sub-phase plates comprise patterns formed by arranging two matrix units according to row or column vectors of a Hadamard matrix, the phase difference of the two matrix units is pi, and the patterns of different sub-phase plates are mutually independent; the phases of the two matrix units are respectively 0 and pi.
2. The static speckle-removing device of claim 1, wherein the sub-phase plates are in a plane perpendicular to the optical axis.
3. The static speckle-removing device of claim 1, wherein the static phase modulator is a spatial light modulator.
4. The static speckle-dispersing device of claim 3, wherein the lens array (1003) is an N x M order lens array consisting of sub-lenses, and the spatial light modulator electrically modulates independent patterns, the size and arrangement of which match the size and arrangement of the sub-lenses.
5. The static speckle reduction device of claim 4, wherein the pattern is formed by arranging two matrix elements according to the row or column vectors of the Hadamard matrix, and the phase difference between the two matrix elements is pi.
6. The static speckle reduction device of claim 5, wherein the two matrix elements have phases 0 and pi, respectively.
7. A laser projector, comprising: the static speckle reduction device of any of claims 1 to 6, arranged between the laser source (1010) and the projection lens (1007), the laser source (1010) being adapted to generate a laser beam and the projection lens (1007) being adapted to project an image on the screen (1008).
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| CN201910490233.7A CN110221448A (en) | 2016-05-10 | 2016-05-10 | Static state based on lens array disappears speckle device and laser-projector |
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| CN111323933A (en) * | 2018-12-14 | 2020-06-23 | 青岛海信激光显示股份有限公司 | Speckle eliminating device and method and projection display equipment |
| CN109946916B (en) * | 2019-04-25 | 2020-11-10 | 合肥工业大学 | Projection light field display device and display method based on multilayer transparent scattering screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6747781B2 (en) * | 2001-06-25 | 2004-06-08 | Silicon Light Machines, Inc. | Method, apparatus, and diffuser for reducing laser speckle |
| JP2004534276A (en) * | 2001-07-06 | 2004-11-11 | エクスプレイ エルティーディー | Image projection apparatus and method |
| GB0718706D0 (en) * | 2007-09-25 | 2007-11-07 | Creative Physics Ltd | Method and apparatus for reducing laser speckle |
| WO2012046330A1 (en) * | 2010-10-07 | 2012-04-12 | Ｎｅｃディスプレイソリューションズ株式会社 | Projection display device |
| CN202083837U (en) * | 2010-11-03 | 2011-12-21 | 中航华东光电有限公司 | Laser projection display system |
| CN102436073A (en) * | 2011-09-28 | 2012-05-02 | 中国科学院半导体研究所 | Projection illumination light path based on semiconductor laser array |
| CN102495478B (en) * | 2011-12-30 | 2014-08-13 | 中国科学技术大学 | Laser display speckle inhibition system based on polymer dispersed liquid crystal and method thereof |
| CN202502302U (en) * | 2011-12-30 | 2012-10-24 | 北京中视中科光电技术有限公司 | Laser display system capable of eliminating speckle |
| CN202583679U (en) * | 2012-05-15 | 2012-12-05 | 中国科学技术大学 | Laser display system based on electro-optical deflection speckle suppression |
| CN203178574U (en) * | 2013-05-06 | 2013-09-04 | 山东中鸿新能源科技有限公司 | Light beam homogenization apparatus for laser night-vision device |
| US20150070659A1 (en) * | 2013-09-10 | 2015-03-12 | Lemoptix Sa | Method for reducing speckles and a light source used in said method |
| CN104950452A (en) * | 2014-03-31 | 2015-09-30 | 山东华光光电子有限公司 | Light spot homogenization apparatus of illumination module group of semiconductor laser |
| CN104375280A (en) * | 2014-11-20 | 2015-02-25 | 西安炬光科技有限公司 | Semiconductor laser unit system eliminating laser speckles |
| CN205643892U (en) * | 2016-05-10 | 2016-10-12 | 中国科学技术大学 | Static dissipation spot device and laser projection appearance based on lens array |
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