CN207067645U - The double DMD laser projection display apparatus of multiple bases - Google Patents
The double DMD laser projection display apparatus of multiple bases Download PDFInfo
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- CN207067645U CN207067645U CN201720981864.5U CN201720981864U CN207067645U CN 207067645 U CN207067645 U CN 207067645U CN 201720981864 U CN201720981864 U CN 201720981864U CN 207067645 U CN207067645 U CN 207067645U
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Abstract
The utility model provides a kind of multiple bases double DMD laser projection display apparatus, including：LASER Light Source module I and II, close beam module I and II, even optical mode group I and II, digital micro mirror element (DMD) I and II, SECO module, dichroscope, projection lens.LASER Light Source module I and II send laser, ECDC beam module I and II close beam respectively, through even optical mode group I and II shimming shaping, incide and modulated on digital micro mirror element (DMD) I and II, SECO module controls LASER Light Source module and digital micro mirror element (DMD) according to the picture signal of input, conjunction beam finally is carried out using dichroscope, into projection lens, obtains projection-display image.The utility model uses multiple bases LASER Light Source, expands color domain coverage ratio, reduces speckle contrast；Using double DMD structures, brightness of image is added, improves the efficiency of light energy utilization.Shown suitable for laser projection and stereo projection display field.
Description
Technical field
Laser projection is the utility model is related to show and the technical field of stereo projection display, specially a kind of multiple bases pair
DMD laser projection display apparatus.
Background technology
Laser projection shows that with stereo projection display be two important directions of Display Technique of new generation.
Laser projection display technology has following significant advantage with traditional display technologies：(1) colour gamut is broad, the covering of its colour gamut
Rate is traditional ntsc television colour gamut more than twice, can more realistically show the color of nature.(2) long lifespan, laser used
Light source, its life-span, its degenerative process was slow up to more than 10000 hours, can keep high image quality for a long time, reduce cost.(3) it is high
Brightness.Conventional projectors (xenon lamp or mercury lamp), unit can reach 33000 lumen luminous fluxes, and laser projection can make light
Flux reaches more than 10000-50000 lumens.(4) color saturation is high, high resolution.Laser has very narrow spectral line width,
So saturation degree is higher and its good directionality, easily acquisition high-resolution are shown.Just because of These characteristics, jumbotron is being realized
It has the advantage that other Display Techniques can not compare in terms of display.
A kind of vision revolution of the stereoscopic display as new mode, breaches the limitation of plane, utilizes planar (2D)
Recording medium produces the i.e. three-dimensional 3D rendering of 3D information, significantly enhances the viewing sense of reality.It is the following hair for showing industry
Exhibition trend.
Known multiple bases laser projection, which is shown, can expand color domain coverage ratio, reduce speckle contrast, currently in order to realizing
Multiple bases laser projection shows mainly there are two schemes：(1) single DMD multiple bases projection display solution, by two groups of rgb light source (RGB
Light source center wavelength is different), ECDC beam, even beam, incide one piece of dmd chip, through ovennodulation, produce respectively two images A and
B, incide projection lens.But this mode efficiency of light energy utilization is too low, brightness of image is not enough and SECO is more difficult.(2) three
DMD multiple bases projection display solutions, by RAAnd RBLight source carries out conjunction beam, even beam, one piece of dmd chip is incided, to GBAnd GA, BBWith
BALight source is handled by the same manner, and the light after three pieces of dmd chips are modulated is closed into beam again, incides projection lens.But three DMD
Although the multiple bases projection display solution efficiency of light energy utilization and brightness of image are all improved, its is complicated, and cost is higher.
Utility model content
For the deficiency of prior art, the utility model provides a kind of multiple bases double DMD laser projection display apparatus,
Using multiple bases light source, color domain coverage ratio is expanded, reduces speckle contrast；Double DMD structures are employed, it is bright to add image
Degree, improves the efficiency of light energy utilization.Shown suitable for laser projection and stereo projection display field.
The utility model adopts the following technical scheme that realization：A kind of double DMD laser projection display apparatus of multiple bases, bag
Include LASER Light Source module I and II, close beam module I and II, even optical mode group I and II, digital micro mirror element (DMD) I and II, sequential
Control module, dichroscope, projection lens.
Wherein, LASER Light Source module I includes red laser light source RA, red laser light source RB, green laser light source GB；Swash
Radiant module II includes blue laser light source BA, blue laser light source BB, green laser light source GA, its centre wavelength is different.
Wherein, beam module I and II are closed, respectively to RA、RB、GBAnd BA、BB、GALaser carries out conjunction beam.
Wherein, digital micro mirror element (DMD) I and II, corresponding LASER Light Source module I and II, by SECO module
Control, to LASER Light Source module, incident light is modulated, and realizes that image projection is shown.
Wherein, SECO module, it is the picture signal according to input, controls the RGB LASER Light Sources of different wave length sending out
Light and non-light emitting state switching；The state of each micro mirror of digital micro mirror element (DMD) is controlled, forms projection-display image.
Wherein, dichroscope, R is transmittedA、RB、GBThe laser and reflection B of wavelengthA、BB、GAWavelength laser (or transmission
BA、BB、GAThe laser and reflection R of wavelengthA、RB、GBThe laser of wavelength), after it modulates digital micro mirror element (DMD) I and II
Image beam carry out conjunction beam, incide projection lens.
Wherein, the optical projection system can not only use six-basic-color (6P) light-source structure, can also utilize four primary (4P), and five
The multiple bases light-source structures such as primary colours (5P), it is only necessary to replace corresponding LASER Light Source module.
During work, LASER Light Source module I and II, under control of the SECO module according to received image signal, not
With required laser is sent in the cycle, ECDC beam module I and II close beam respectively, after even optical mode group I and II shimming shaping, incide
Digital micro mirror element (DMD) I and II, each micro mirror is a display pixel on digital micro mirror element (DMD), is passed through
The state that the rotation control of angle opens and closes, under the control of SECO module, modulates LASER Light Source module I and II respectively
The laser sent, conjunction beam finally is carried out using dichroscope, into projection lens, obtain projection-display image.
If with reference to 6P color separation glasses, stereo display effect can obtain.The 6P color separations glasses are made up of colour filter A and B,
Colour filter A filters off LASER Light Source module RB、GB、BBComposition, colour filter B filter off RA、GA、BAComposition, beholder then can see
Two images, due to visual persistence effect, stereo-picture is formed in the brain.
The utility model has advantages below：
1st, multiple bases laser projection is shown, due to using multiple bases LASER Light Source, is improved color domain coverage ratio, is schemed display
As can more realistically reproduce the colourful color world of nature.
2nd, multiple bases laser projection is shown, due to using multiple bases LASER Light Source, can be reduced speckle contrast, be obtained more
Good display effect.
3rd, double DMD structures, compared to single DMD structures, the efficiency of light energy utilization is high, brightness of image increase；Compared to three DMD sides
Case, simple in construction, cost is relatively low.
4th, beam is closed using dichroscope, simple in construction, cost is relatively low.
5th, stereoscopic display is may be directly applied to reference to 6P color separation glasses, had a extensive future.
Brief description of the drawings
Fig. 1 is the double DMD laser projection display apparatus structure charts of the utility model six-basic-color；
Fig. 2 is the six-basic-color LASER Light Source spectral schematic that the utility model is chosen；
Fig. 3 is the six-basic-color LASER Light Source chromaticity diagram that the utility model is chosen；
Fig. 4 is the sequential relationship schematic diagram that the utility model LASER Light Source module lights.
Reference implication is in figure：1-1 is red laser light source RA, 1-2 is red laser light source RB, 1-3 swashs for green glow
Radiant GB, 2-1 is blue laser light source BA, 2-2 is blue laser light source BB, 2-3 is green laser light source GA , 3-1 is conjunction beam
Module I, 3-2 are even optical mode group I to close beam module II, 4-1, and 4-2 is even optical mode group II, and 5-1 is digital micro mirror element (DMD)
I, 5-2 are digital micro mirror element (DMD) II, and 6 be SECO module, and 7 be dichroscope, and 8 be projection lens.
Embodiment
Specific embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
Fig. 1 illustrates that a kind of double DMD laser projection display apparatus of multiple bases described in the utility model, including laser light
Source module I, LASER Light Source module II, close beam module I 3-1, close beam module II 3-2, even optical mode group I 4-1, even optical mode group II
4-2, digital micro mirror element (DMD) I 5-1, digital micro mirror element (DMD) II 5-2, SECO module 6, dichroscope
7th, projection lens 8.Wherein LASER Light Source module I is designated as R including red laser light source 1-1A, red laser light source 1-2 be designated as RB、
Green laser light source 1-3 is designated as GB；LASER Light Source module II is designated as B including blue laser light source 2-1A, blue laser light source 2-2
It is designated as BB, green laser light source 2-3 be designated as GA.Preferably, used laser includes but is not limited to be cardiac wave in luminescent spectrum
Grow the semiconductor red light laser in 638nm and 650nm, semiconductor green glow of the luminescent spectrum centre wavelength in 545nm and 520nm
Laser, luminescent spectrum centre wavelength is in 440nm and 465nm Several problems of evaluating laser beam quality of unstable, spectral schematic such as Fig. 2.
Beam module I 3-1 and II 3-2 are wherein closed respectively to RA、RB、GBAnd BA、BB、GALaser carries out conjunction beam, can use X ribs
Mirror, double dichronic mirrors, fiber coupling etc. are a variety of to close beam scheme.Wherein even optical mode group I 4-1 and II 4-2 mainly enters to laser beam
Row shimming shaping, to meet the needs of projection display system, realized using devices such as square rod integrator, compound eye array lenses.
The essence of speckle is a kind of coherent superposition, and Goodman is verified if N number of irrelevant speckle pattern is superimposed upon
When together, speckle contrast will be reduced to original speckle patternIn order to obtain multiple incoherent speckle patterns,
Can be by changing light source incidence angle, wavelength, polarization state on Spatial Dimension, can be by adding quick become on time dimension
The modes such as the diffusion sheet of change.The utility model reduces speckle contrast using multiple bases light source.And multiple bases
Laser projection is shown to be improved compared to traditional tricolor laser Projection Display color domain coverage ratio, and Fig. 3 selects for the utility model
The six-basic-color LASER Light Source chromaticity diagram taken.
Red laser light source R in LASER Light Source module IA 1-1, red laser light source RB1-2, green laser light source GB 1-
Blue laser light source B in 3, LASER Light Source module IIA 2-1, blue laser light source BB2-2, green laser light source GA 2-3, by when
Sequence controls module 6, and according to the control of received image signal, RGB (RGB) LASER Light Source of two groups of LASER Light Source modules is at times
Ground quickly switches luminous with non-light emitting state.As shown in figure 4, LASER Light Source module I light periods are subdivided into three periods
T10-T11、T11-T12、T12-T13；LASER Light Source module II light periods are subdivided into three period T20-T21、T21-T22、T22-
T23.RGB laser difference ECDC beam module I 3-1 and the II 3-2 that LASER Light Source module I and II are sent close beam, through even optical mode group I
After 4-1 and II 4-2 shimming shapings, incide modulated on digital micro mirror element (DMD) I 5-1 and II 5-2, thrown
Shadow display image, digital micro mirror element (DMD) I 5-1 and II 5-2 is by SECO module 6 according to received image signal
Modulation.Image after two groups of modulation closes beam by dichroscope 7, into projection lens 8, obtains final Projection Display figure
Picture.Due to the particularity of LASER Light Source module centre wavelength selection, conjunction beam directly can be carried out with dichroscope, it is not necessary to by
Baroque TIR prism, simple in construction, cost is relatively low.The utility model can not only play six-basic-color (6P) vision signal,
Five primary colours (5P), four primary (4P), three primary colours (3P) vision signal can also be played.
In addition, the projection arrangement can not only use six-basic-color (6P) light-source structure, four bases can also be utilized as needed
The multiple bases light-source structure such as color (4P), five primary colours (5P), it is only necessary to replace corresponding LASER Light Source module.
It should be noted last that above example is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model is described in detail with reference to embodiment for pipe, it will be understood by those within the art that, to this practicality
New technical scheme is modified or equivalent substitution, without departure from the spirit and scope of the technical solution of the utility model,
It all should cover in claims of the present utility model.
Claims (7)
- A kind of 1. double DMD laser projection display apparatus of multiple bases, it is characterised in that：Including LASER Light Source module I and II, close Shu Mo Group I and II, even optical mode group I and II, digital micro mirror element (DMD) I and II, SECO module, dichroscope and projection lens Head, the laser that LASER Light Source module I and II are sent, ECDC beam module I and II conjunction beam, whole through even optical mode group I and II shimming respectively Shape, incide and modulated on digital micro mirror element (DMD) I and II, SECO module is according to the picture signal control of input LASER Light Source module I and II processed and digital micro mirror element (DMD) I and II, finally carries out conjunction beam, into throwing using dichroscope Shadow camera lens, obtains projection-display image.
- 2. the double DMD laser projection display apparatus of multiple bases according to claim 1, it is characterised in that：The LASER Light Source Module I and II, wherein LASER Light Source module I are designated as R including red laser light sourceA, red laser light source be designated as RB, green laser Light source is designated as GB；LASER Light Source module II is designated as B including blue laser light sourceA, blue laser light source be designated as BB, green laser light Source is designated as GA, its centre wavelength is different.
- 3. the double DMD laser projection display apparatus of multiple bases according to claim 1, it is characterised in that：The conjunction beam module I And II, respectively to RA、RB、GBAnd BA、BB、GALaser carries out conjunction beam.
- 4. the double DMD laser projection display apparatus of multiple bases according to claim 1, it is characterised in that：The numeral declines Mirror device (DMD) I and II, corresponding LASER Light Source module I and II, is controlled by SECO module, LASER Light Source module is entered The light penetrated is modulated, and realizes that image projection is shown.
- 5. the double DMD laser projection display apparatus of multiple bases according to claim 1, it is characterised in that：The SECO Module, according to the picture signal of input, the RGB LASER Light Sources of different wave length are controlled in the switching of luminous and non-light emitting state；Control The state of each micro mirror of digital micro mirror element (DMD), forms projection-display image.
- 6. the double DMD laser projection display apparatus of multiple bases according to claim 1, it is characterised in that：The dichroscope, Transmit RA、RB、GBThe laser and reflection B of wavelengthA、BB、GAThe laser or transmission B of wavelengthA、BB、GAThe laser of wavelength and reflection RA、RB、GBThe laser of wavelength, the image beam after it modulates digital micro mirror element (DMD) I and II carry out conjunction beam, incided Projection lens.
- 7. the double DMD laser projection display apparatus of multiple bases according to claim 1, it is characterised in that：The optical projection system is not Six-basic-color (6P) light-source structure can be only used, four primary (4P), the multiple bases light-source structure of five primary colours (5P) can also be used, Only need to replace corresponding LASER Light Source module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720981864.5U CN207067645U (en) | 2017-08-08 | 2017-08-08 | The double DMD laser projection display apparatus of multiple bases |
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| CN201720981864.5U CN207067645U (en) | 2017-08-08 | 2017-08-08 | The double DMD laser projection display apparatus of multiple bases |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107357124A (en) * | 2017-08-08 | 2017-11-17 | 中国科学技术大学 | The double DMD laser projection display apparatus of multiple bases |
| CN108600720A (en) * | 2018-07-18 | 2018-09-28 | 中国电影器材有限责任公司 | A kind of light source, device, system and method for picture signal HDR projections |
-
2017
- 2017-08-08 CN CN201720981864.5U patent/CN207067645U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107357124A (en) * | 2017-08-08 | 2017-11-17 | 中国科学技术大学 | The double DMD laser projection display apparatus of multiple bases |
| CN107357124B (en) * | 2017-08-08 | 2023-04-28 | 合肥全色光显科技有限公司 | Multi-primary-color double DMD laser projection display device |
| CN108600720A (en) * | 2018-07-18 | 2018-09-28 | 中国电影器材有限责任公司 | A kind of light source, device, system and method for picture signal HDR projections |
| CN108600720B (en) * | 2018-07-18 | 2024-02-20 | 中国电影器材有限责任公司 | Light source, device, system and method for HDR projection of image signals |
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Effective date of registration: 20230524 Address after: Zone D and E, 2nd Floor, Building 3, Mingzhu Industrial Park, No. 106 Innovation Avenue, High tech Zone, Hefei City, Anhui Province, 231283 Patentee after: HEFEI FULL COLOR LIGHT DISPLAY TECHNOLOGY Co.,Ltd. Address before: C901, Material Science Building, Zhongke University East Campus, No. 96 Jinzhai Road, Hefei City, Anhui Province, 230022 Patentee before: Xu Lixin Effective date of registration: 20230524 Address after: C901, Material Science Building, Zhongke University East Campus, No. 96 Jinzhai Road, Hefei City, Anhui Province, 230022 Patentee after: Xu Lixin Address before: 230026 Jinzhai Road, Baohe District, Hefei, Anhui Province, No. 96 Patentee before: University of Science and Technology of China |