CN105045019B - Digital light projection (DLP) Polarized three-dimensional (3D) projection device - Google Patents
Digital light projection (DLP) Polarized three-dimensional (3D) projection device Download PDFInfo
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- CN105045019B CN105045019B CN201510532549.XA CN201510532549A CN105045019B CN 105045019 B CN105045019 B CN 105045019B CN 201510532549 A CN201510532549 A CN 201510532549A CN 105045019 B CN105045019 B CN 105045019B
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- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 230000010287 polarization Effects 0.000 claims description 60
- 238000000926 separation method Methods 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 239000003086 colorant Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000011514 reflex Effects 0.000 description 3
- 230000001568 sexual effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
A digital light projection (DLP) polarized three-dimensional projection (3D) device comprises a white light source, a beam shaping system, digital micromirror device (DMD) chips, a projection lens, a light split/combination prism group and a driving signal control unit, wherein the light split/combination prism group is used for splitting white light emitted from a light source into red primary light, green primary light and blue primary light which are incident onto respective corresponding DMD chips for modulation; the top of each micro lens in the DMD chips is provided with a selective reflection surface for selective reflection of P light and S light, two sub pixels contained in a pixel are used for respectively giving out the P light and the S light, the P light and the S light which are reflected by the DMD chips corresponding to the three red, blue and green primary lights are modulated to form a left-eye image and a right-eye image by the driving signal control unit, and a looker can watch a 3D image by wearing adaptive polarized 3D glasses. Compared with the ordinary polarized 3D projection, the DLP polarized 3D device has the advantages of low cost and small volume, a projector is saved, and a good practical effect can be obtained in the occasion of no need of very high resolution.
Description
Technical field
The present invention relates to projection display technique field, particularly one kind apply digital light processes (dlp, digital
Light procession) shadow casting technique polarization type solid (3d) projection arrangement, cooperation polarization type 3d glasses may be viewed by 3d figure
Picture.
Background technology
Polarization type 3d is the universal stereo display technique of current application, has the different principle in polarization direction to divide using light
Solution original image, first pass through divide the image into vertical to polarised light and level to two groups of pictures of polarised light, then spectators wear a left side
Right eyeglass is respectively adopted the 3d glasses of different polarization direction polaroid, and the right and left eyes of such people just can receive two groups of different pictures,
Again through brain compound stereoscopic image.
Current non-family safe polarization type 3d Projection Display utilizes projector's p light to form left-eye image, using another
An outer projector equipment forms eye image with s light, but so needs, using Liang Tai projector, to lead to cost more expensive.
Content of the invention
It is an object of the invention to overcoming above-mentioned the deficiencies in the prior art, provide a kind of the new of combination dlp shadow casting technique
Polarization type stereo projection apparatus.
In order to solve above-mentioned technical problem, the technical scheme is that
A kind of dlp polarization type stereo projection apparatus, including light-source system, dmd chip, projection lens, closing light unit and drive
Dynamic signaling control unit, described light-source system output is corresponded with each primary colours, respectively by the primary lights of color separated, dmd chip
Primary lights are incident on corresponding dmd chip respectively；Each pixel of described dmd chip is become by two sub-pixel groups, respectively
For the first polarization state sub-pixel and the second polarization state sub-pixel；Each sub-pixel is by can the micro-reflector of independent driving switch be hinged on
Constitute on silicon substrate；Described micro-reflector top is selective reflecting face, and bottom is the hinge connecting silicon substrate；Described driving is believed
Number control unit controls the micro-reflector in each sub-pixel to rotate to realize switch switching with hinge for axle；When being in opening
When, incident primary lights are all reflected into the linear polarization with the first polarization direction by the micro-reflector of the first polarization state sub-pixel
Light outgoing extremely described closing light unit, incident primary lights are all reflected into by the micro-reflector of the second polarization state sub-pixel to be had
The linearly polarized light of the second polarization direction outgoing extremely described closing light unit, wherein said first polarization direction and the second polarization direction
It is mutually perpendicular to；Drive signal control unit controls the micro-reflector in each dmd chip according to display image information to incident base
Coloured light is modulated, and the primary lights of modulated reflection are combined into a branch of modulation light by closing light unit, have the first polarization in modulation light
The light in direction constitutes left-eye image, and the light with the second polarization direction constitutes left-eye image；Modulation light passes through projection lens
It is incident upon on screen.
Preferably, described screen is metal screen, and incident modulation polarization degree thereon can be made not to be destroyed.
Preferably, described light-source system exports three primary colours light, respectively ruddiness, green glow and blue light, corresponds to ruddiness dmd respectively
Chip, green glow dmd chip and blue light dmd chip, now this projection arrangement is three dmd systems.
It is further preferred that described light-source system includes white light source, beam shaping system and spectrophotometric unit, described white light
The white light of light source outgoing incident spectrophotometric unit after beam shaping system, incident white light is divided into red by described spectrophotometric unit
Light, green glow and blue light respectively outgoing are to corresponding dmd chip.
Still more preferably, the white light of described white light source outgoing is nature polarised light or circularly polarized light, contains many
Kind coloured light, and can be analyzed to the linearly polarized light of multiple polarization directions, the wide usage of this light source is wider.
Still more preferably, described spectrophotometric unit and closing light unit are the separation/combination prism group unified, special with one group
Setting shape realizes the function of light splitting and closing light with the prism combining simultaneously, makes device compacter.
Preferred for such scheme, described light-source system also includes speculum, the white light warp of beam shaping system exit
Described speculum reflects into described separation/combination prism group.
Preferably, the plane of incidence of described each primary lights is all parallel, the first polarization state sub-pixel for above-mentioned all technical schemes
Interior selective reflecting face reflection p light, the selective reflecting face reflection s light in the second polarization state sub-pixel；All p in modulation light
Light constitutes left-eye image, and all s light constitute eye image.
Technical solution of the present invention each micromirror top in its core component dmd chip is provided with to p light and the choosing of s light
Select the selective reflecting face of sexual reflex, two sub-pixels difference only outgoing p light and s light that one pixel of dmd chip comprises, and logical
Overdriving, the p light of dmd chip reflection corresponding to red-green-blue light and s light modulation form left eye to signaling control unit respectively
Image and eye image, beholder wears the polarization type 3d glasses that left and right eyeglass only allows p light and s light transmission respectively, you can by
Images of left and right eyes receives left-eye image and eye image respectively, thus forming stereo-picture.
Because common polarization type 3d projection needs respectively to configure a projector for polarizing orthogonal p light and s light, and this
Inventive technique scheme can save a projector, and therefore the present invention has the advantages that low cost, small volume although due to employing
The design of many sub-pixels makes resolution ratio decrease, but can obtain practical effect well under the occasion without very high resolution
Really.
Brief description
Fig. 1 is dlp polarization type stereo projection apparatus structural representation of the present invention；
Fig. 2 is dmd chip pixel structural representation；
Fig. 3 is dmd chip sub-pixel micro-mirror structure schematic diagram.
Wherein:
1-1: white light source；1-2: beam shaping system；1-3: speculum；2:dmd chip；2r: ruddiness dmd chip；2g:
Green glow dmd chip；2b: blue light dmd chip；P: pixel；P1: the first polarization state sub-pixel；P2: the second polarization state sub-pixel；M:
Micro-reflector；M1: selective reflecting face；M2: hinge；B: silicon substrate；3: separation/combination prism group；4: projection lens；L1: light
Source light；L2: modulation light；L21:p light；L22:s light.
Specific embodiment
The present invention will be further described to pass through embodiment below in conjunction with accompanying drawing, to more fully understand the present invention.
Fig. 1 show the present embodiment the dlp stereo projecting equipment corresponding to three dmd structures.Wherein, white light source 1-
Light source light l1 of 1 outgoing is white light, and it is nature polarised light or circularly polarized light；Light source light l1 is through beam shaping system 1-2
Incide separation/combination prism group 3 by a speculum 1-3, white light is divided into ruddiness, green glow and blue light, incides respectively
Ruddiness dmd chip 2r, green glow dmd chip 2g and blue light dmd chip 2b, the three coloured light plane of incidence is mutually parallel；Wherein, dmd core
The structure of piece is as follows:
It is the micro-reflector m structure in the basic structure of dmd chip 2 of the present embodiment and pixel p shown in Fig. 2 and Fig. 3.As
Fig. 2, dmd chip 2 is formed by pixel p is regularly arranged, comprises two sub-pixels, the respectively first polarization state in each pixel p
Pixel p 1 and the second polarization state sub-pixel p2；As Fig. 3, two sub-pixels are hinged on by the hinge m2 of bottom by micro-reflector m
Constitute on silicon substrate b, described micro-reflector m top is selective reflecting face m1, the selectivity in the first polarization state sub-pixel p1
Reflecting surface only reflects p light, and s light is only reflected in the selective reflecting face in the second polarization state sub-pixel p2；
The micro-reflector m that described drive signal control unit (not shown) can control in each sub-pixel with hinge m2 is
Axle rotates to different angles to realize switch switching；As shown in figure 3, at micro-reflector m belonging to the first polarization state sub-pixel p1
In opening angle, incident light source light l1 chosen sexual reflex face m1 is reflected into p light l21, and emergent light injects separation/combination prism
Group 3 is incorporated into modulation light l2；And the micro-reflector m belonging to the second polarization state sub-pixel p2 is in closing angle, the light source of incidence
Light l1 chosen sexual reflex face m1 is reflected into s light l22, but this reflection s light is not incorporated into modulation light l2, but quilt in projection arrangement
Absorb.
As shown in figure 1, drive signal control unit (not shown), according to the stereo-picture intending display, image is divided into
Left-eye image and eye image are simultaneously processed as the switching signal of micro-reflector, and drive signal control unit controls the first polarization state
Pixel p 1 execution left-eye image display signal, and the second polarization state sub-pixel p2 execution eye image display signal, each dmd chip
Interior micro-reflector m carries out switch motion thus being modulated respectively to incident three primary colours light according to display signal, after modulation
Primary lights be reflected back separation/combination prism group 3 and be combined into a branch of modulation light l2；In modulation light l2, from all first polarizations
The p light of state sub-pixel p1 contains the display picture information of left-eye image, from the s light bag of all second polarization state sub-pixel p2
Contain the display picture information of eye image, modulation light l2 projects on the screen of display by projection lens 4, and screen adopts
Metal screen；Through screen reflection, beholder just can see left-and right-eye images synthesis by wearing suitable polarization type 3d glasses
Stereo-picture.
It should be understood that above-described embodiment only technology design to illustrate the invention and feature, its object is to for this area skill
Art personnel understand present disclosure and implement according to this, the not exhaustion of specific embodiment, can not limit the present invention with this
Protection domain.All technical schemes according to invention of the present invention are modified or equivalent, without deviating from the technology of the present invention
The objective of scheme and scope, it all should be covered in the middle of scope of the presently claimed invention.
Claims (8)
1. a kind of dlp polarization type stereo projection apparatus, including light-source system, dmd chip, projection lens (4), closing light unit and drive
Dynamic signaling control unit it is characterised in that:
Described light-source system output is corresponded with each primary colours by the primary lights of color separated, dmd chip, and each primary lights enter respectively
It is incident upon on corresponding dmd chip；
Each pixel (p) of described dmd chip is become by two sub-pixel groups, the respectively first polarization state sub-pixel (p1) and
Two polarization state sub-pixels (p2)；Each sub-pixel is by the micro-reflector (m) of independent driving switch being hinged on the upper structure of silicon substrate (b)
Become；Described micro-reflector (m) top is selective reflecting face (m1), and bottom is the hinge (m2) connecting silicon substrate (b)；
Described drive signal control unit controls the micro-reflector (m) in each sub-pixel to rotate to realize out with hinge (m2) for axle
Close switching；When being in opening, the selective reflecting face (m1) of the interior micro-reflector (m) of the first polarization state sub-pixel (p1) will
Incident primary lights are all reflected into the linearly polarized light with the first polarization direction and outgoing is to described closing light unit, the second polarization
Incident primary lights are all reflected into the linearly polarized light with the second polarization direction simultaneously by the micro-reflector (m) of state sub-pixel (p2)
To described closing light unit, wherein said first polarization direction and the second polarization direction are mutually perpendicular to for outgoing；Drive signal controls single
Unit controls the micro-reflector (m) in each dmd chip according to display image information, incident primary lights to be modulated, closing light unit
The primary lights of modulated reflection are combined into a branch of modulation light, the light in modulation light with the first polarization direction constitutes left eye figure
Picture, the light with the second polarization direction constitutes left-eye image；
Modulation light is incident upon on screen by projection lens (4).
2. dlp polarization type stereo projection apparatus according to claim 1 it is characterised in that: described screen be metal screen.
3. dlp polarization type stereo projection apparatus according to claim 1 it is characterised in that: described light-source system output three
Primary lights, respectively ruddiness, green glow and blue light, correspond to ruddiness dmd chip (2r), green glow dmd chip (2g) and blue light dmd respectively
Chip (2b).
4. dlp polarization type stereo projection apparatus according to claim 3 it is characterised in that: described light-source system includes white
Radiant (1-1), beam shaping system (1-2) and spectrophotometric unit, the white light of described white light source (1-1) outgoing is whole through light beam
Shape system (1-2) incident spectrophotometric unit afterwards, incident white light is divided into ruddiness, green glow and blue light and goes out respectively by described spectrophotometric unit
It is incident upon on corresponding dmd chip.
5. dlp polarization type stereo projection apparatus according to claim 4 it is characterised in that: described white light source (1-1) goes out
The white light penetrated is nature polarised light or circularly polarized light.
6. dlp polarization type stereo projection apparatus according to claim 4 it is characterised in that: described spectrophotometric unit and closing light
Unit is the separation/combination prism group (3) of unification.
7. dlp polarization type stereo projection apparatus according to claim 6 it is characterised in that: described light-source system also includes
Speculum (1-3), the white light of beam shaping system (1-2) outgoing reflects into described separation/combination rib through described speculum (1-3)
Microscope group (3).
8. the dlp polarization type stereo projection apparatus according to any one of claim 1 to 7 it is characterised in that: described each primary colours
The plane of incidence of light is all parallel, the selective reflecting face reflection p light in the first polarization state sub-pixel (p1), the sub- picture of the second polarization state
Selective reflecting face reflection s light in plain (p2)；In modulation light, all p light constitute left-eye image, and all s light constitute right eye figure
Picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510532549.XA CN105045019B (en) | 2015-08-26 | 2015-08-26 | Digital light projection (DLP) Polarized three-dimensional (3D) projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510532549.XA CN105045019B (en) | 2015-08-26 | 2015-08-26 | Digital light projection (DLP) Polarized three-dimensional (3D) projection device |
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| CN105045019A CN105045019A (en) | 2015-11-11 |
| CN105045019B true CN105045019B (en) | 2017-01-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107884934B (en) * | 2017-11-10 | 2022-05-31 | 联想(北京)有限公司 | Head-mounted display device and control method thereof |
| CN109917607A (en) * | 2017-12-13 | 2019-06-21 | 讯飞幻境(北京)科技有限公司 | 3D projection |
| CN113568267A (en) * | 2020-04-28 | 2021-10-29 | 怡利电子工业股份有限公司 | Projection device for projecting stereo image |
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| FI20030583A (en) * | 2003-04-16 | 2004-10-17 | Upstream Engineering Oy | Beamer |
| CN100345058C (en) * | 2005-04-18 | 2007-10-24 | 东华大学 | Mono-chip single-colour wheel stereo projection optical engine |
| CN101408678B (en) * | 2007-10-11 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Stereo projection optical system |
| CN102591029A (en) * | 2011-04-26 | 2012-07-18 | 浙江亿思达显示科技有限公司 | 3D projection optical system and dual chip light splitting and light integrating model thereof |
| JP6566872B2 (en) * | 2013-03-14 | 2019-08-28 | ストラタシス リミテッド | High-resolution DLP projector device and method of using the same |
| CN204989730U (en) * | 2015-08-26 | 2016-01-20 | 南京先进激光技术研究院 | Three -dimensional projection arrangement of DLP polarisation formula |
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