CN106842794A - A kind of non-telecentricity DLP micro projection modules - Google Patents
A kind of non-telecentricity DLP micro projection modules Download PDFInfo
- Publication number
- CN106842794A CN106842794A CN201710190610.6A CN201710190610A CN106842794A CN 106842794 A CN106842794 A CN 106842794A CN 201710190610 A CN201710190610 A CN 201710190610A CN 106842794 A CN106842794 A CN 106842794A
- Authority
- CN
- China
- Prior art keywords
- lens
- light beam
- light source
- source group
- telecentricity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
Abstract
The invention discloses a kind of non-telecentricity DLP micro projection modules, including：Produce the lighting source of three primary colours light beam；Three primary colours light beam from lighting source is carried out into the color separation lens set that closing light forms white-light illuminating light beam；White-light illuminating light beam is converted to the fly's-eye lens of uniform face light beam；Asymmetric free-form surface lens；DMD display chips；And projection lens.The asymmetric free-form surface lens, are incident to DMD display chips, and guided to projection lens from the projected light beam of DMD display chips reflection and by projected light beam for receiving convergence for converging illuminating bundle of the guiding from fly's-eye lens；The projected light beam is not parallel light beam, and the one side from projection lens central optical axis is incident, then from the another side outgoing of projection lens central optical axis；The short side of the DMD display chips and the central optical axis of projection lens are vertical.The present invention converged using asymmetric free-form surface lens with guiding illumination light beam and projected light beam, instead of the illuminating prism and speculum of conventional design, size is small, lightweight, light path it is short be lost it is low.
Description
Technical field
The present invention relates to digital projection display technology field, more particularly to a kind of non-telecentricity DLP micro projection modules.
Background technology
With the development of semiconductor technology, portable type electronic product is becomed more diverse so that the demand of minitype projection machine is got over
Come bigger.And DLP miniature projector will be used widely and thrown it is necessary to further improve illumination system performance and further reduction
Shadow system dimension and weight, it is ensured that easily portable while it has a projection quality high.
In existing DLP miniature projector, using optical element --- illuminating prism (TIR prism or RTIR prisms) is right
DMD lighting sources are compensated, and form telecentric beam path, are used to incident ray and reflection light required for matching dmd chip.For
Optical path switching device transmitted light is set smoothly to incide illuminating prism, it is necessary to be separately provided plane mirror or others
Optical element changes the direction of light beam, and due to illuminating prism, volume is larger in itself, along with the setting of plane mirror, increasing
Plus the volume of existing DLP miniature projector is increased again on the basis of optical element, further subtract to existing DLP miniature projector
Small size brings obstacle in order to carry.Therefore, design succinct efficient, the DLP of small, lightweight, the low light loss of size throws
Shadow module is the research direction and emphasis for projecting industry.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the invention, without answering
In being considered as recognizing or imply in any form that the information structure has been the prior art well known to persons skilled in the art.
The content of the invention
A kind of without using illuminating prism the present invention solves the technical problem of providing, design is succinct, size is small, weight
Amount is light, light loss is low and be the DLP micro projection modules of non-telecentricity design.
In order to solve the above technical problems, one aspect of the present invention is：A kind of non-miniature throwings of telecentricity DLP are provided
Shadow module, including：Produce the lighting source of three primary colours light beam；Three primary colours light beam from lighting source is carried out into closing light and forms white
The color separation lens set of light illumination beam；White-light illuminating light beam is converted to the fly's-eye lens of uniform face light beam；Asymmetric freedom
Toroidal lens；DMD display chips；And projection lens；The asymmetric free-form surface lens, compound eye is come from for converging guiding
The illuminating bundle of lens is incident to DMD display chips, and converges the projected light beam that outgoing is reflected from DMD display chips for receiving
And guide to projection lens projected light beam；The projected light beam is not parallel light beam, the projection key light in the projected light beam
Beam is not coaxial with projection lens central optical axis；Projection main beam is incident from the one side of projection lens central optical axis, then from throwing
The another side outgoing of shadow optical center optical axis；The short side of the DMD display chips and the central optical axis of projection lens are vertical.
According to preferred embodiment, the illuminating bundle from fly's-eye lens is first through asymmetric free-form surface lens medial surface
After reflection, then DMD display chips are transmitted into through asymmetric free-form surface lens；From the projected light beam of DMD display chip outgoing
Projection lens is incident to through asymmetric free-form surface lens.
According to preferred embodiment, the non-telecentricity DLP micro projection modules also include：First relay lens, is arranged at multiple
Eyelens front, the illuminating bundle of fly's-eye lens is come from for converging.
According to preferred embodiment, the lighting source includes the first color light source group, the second color light source group and three coloured light
Source group, these light source groups include LED light source and the collimation lens set being arranged on LED light source light direction；The dichronic mirror
Piece group includes the first dichronic mirror and the second dichronic mirror, for from the first color light source group, the second color light source group and the 3rd color
The three primary colours light beam of light source group carries out closing light and forms white-light illuminating light beam；The non-telecentricity DLP micro projection modules also include：The
Two relay lens, are arranged between the first dichronic mirror and the second dichronic mirror, and the light beam of part light source group is come from for converging.
According to preferred embodiment, the curved surface of the asymmetric free-form surface lens is described by following formula：
Wherein, Z be curved surface highly, X, Y be respectively curved surface height optical axis projection coordinate, A1 to A9 be location parameter, C
It is curvature parameters with k.
According to preferred embodiment, the second color light source group and three-color light source group be arranged in parallel；First color light source
The central optical axis of group are vertical with the central optical axis of the second color light source group.
According to preferred embodiment, the first color light source group and the second color light source group be arranged in parallel；First color light source
The central optical axis of group and the central optical axis of three-color light source group are vertical.
According to preferred embodiment, the three primary colours light beam is red bluish-green LED beam.
Compared with prior art, the present invention has the advantages that：A kind of non-telecentricity DLP micro projection modules are provided,
Including：Produce the lighting source of three primary colours light beam；Three primary colours light beam from lighting source is carried out into closing light and forms white-light illuminating
The color separation lens set of light beam；White-light illuminating light beam is converted to the fly's-eye lens of uniform face light beam；Asymmetric free form surface is saturating
Mirror；DMD display chips；And projection lens；And the present invention is converged and guiding illumination light using asymmetric free-form surface lens
Beam and projected light beam, instead of the illuminating prism and speculum of conventional design, and design is succinct, size is small, lightweight, light loss is low
And be the DLP micro projection modules of non-telecentricity design.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the embodiment one of non-telecentricity DLP micro projection modules of the present invention；
Fig. 2 is a kind of dimensional structure diagram of the embodiment two of non-telecentricity DLP micro projection modules of the present invention；
Fig. 3 is a kind of dimensional structure diagram of the embodiment three of non-telecentricity DLP micro projection modules of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the invention is described in detail, it is to be understood that guarantor of the invention
Shield scope is not limited by specific embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other units
Part or other parts.
Fig. 1 is a kind of dimensional structure diagram of the embodiment one of non-telecentricity DLP micro projection modules of the present invention；Such as Fig. 1
It is shown, a kind of non-telecentricity DLP micro projection modules, including：First color light source group 101；Second color light source group 102；Three coloured light
Source group 103；Color separation lens set；Fly's-eye lens 106；Asymmetric free-form surface lens 108；DMD display chips 109；Projection lens
110.The first color light source group 101, the second color light source group 102 and three-color light source group 103 include LED light source and setting
Collimation lens set on LED light source light direction.The color separation lens set is to from the lighting source for producing three primary colours light beam
That is the first color light source group 101；Second color light source group 102；The three primary colours light beam of three-color light source group 103 carries out closing light and forms white light
Illuminating bundle.White-light illuminating light beam is converted to uniform face light beam by the fly's-eye lens 106.The asymmetric free form surface is saturating
Mirror 108, DMD display chips 109 are incident to for converging illuminating bundle a1 of the guiding from fly's-eye lens 106, and for receiving
Converge the projected light beam a2 from the reflection outgoing of DMD display chips 109 and guide to projection lens projected light beam a2；The projection
Light beam a2 is not parallel light beam, so forms non-telecentric structure so that the incident main beam and outgoing main beam of DMD display chips
Do not overlap, and reduce the use of illuminating prism and speculum, so that projecting the compact conformation of module and going out from projection lens
The beam size penetrated is larger.The main beam of projected light beam a2 is not coaxial with the central optical axis L of projection lens 110；Projected light beam a2 from
The one side of the central optical axis L of projection lens 110 is incident, then from the another side outgoing of the central optical axis L of projection lens 110；Institute
State DMD display chips 109 short side and projection lens 110 central optical axis L it is vertical.Main beam and throwing due to projected light beam a2
Central optical axis L is not coaxial for shadow camera lens 110, so the center that projection module is not intended to be limited to projection lens when in use must be with
The center of projected picture situation in the same horizontal line so that projection module working position range it is broader (can height can
It is low).
In the present embodiment, the second color light source group 102 and three-color light source group 103 be arranged in parallel；First color
The central optical axis of light source group 101 are vertical with the central optical axis of the second color light source group 102；The color separation lens set, it includes：First
The dichronic mirror 105 of dichronic mirror 104 and second, for from the first color light source group 101, the second color light source group 102 and the 3rd color
The three primary colours light beam of light source group 103 carries out closing light and forms white-light illuminating light beam a1；The dichronic mirror of first dichronic mirror 104 and second
105 transmit the first color beam from the first color light source group 101, and the second color beam from the second color light source group 102 is first passed through
First dichronic mirror 104 is transmitted after reflecting through the second dichronic mirror 105；Second dichronic mirror 105 is reflected from three-color light source group 103
Tri-color beam；The three primary colours light beam is red bluish-green LED beam.
In the present embodiment, the non-telecentricity DLP micro projection modules also include：First relay lens 107, is arranged at multiple
The light emission side of eyelens 106, the illuminating bundle a1 of fly's-eye lens 106 is come from for converging；The non-telecentricity DLP micro projection modules
Can also include：Second relay lens (without sign in figure), is arranged between the first dichronic mirror 104 and the second dichronic mirror 105, uses
Come from the light beam of part light source group in convergence.
In the present embodiment, the curved surface of the asymmetric free-form surface lens is described by following formula：
Wherein, Z be curved surface highly, X, Y be respectively curved surface height optical axis projection coordinate, A1 to A9 be location parameter, C
It is curvature parameters with k.
In the present embodiment, the projected light beam a2 is not parallel light beam, from the side of the central optical axis L of projection lens 110
Face is incident, then from the another side outgoing of the central optical axis L of projection lens 110, the main beam and central optical axis L of projected light beam a2
With angle, the angular range is 0 ° to 30 °.
Fig. 2 is a kind of dimensional structure diagram of the embodiment two of non-telecentricity DLP micro projection modules of the present invention.Such as Fig. 2
Shown, from unlike embodiment one, the first color light source group 201 and the second color light source group 202 be arranged in parallel；Described first
The central optical axis of color light source group 201 and the central optical axis of three-color light source group 203 are vertical；First dichronic mirror 204 and the second color separation
Mirror 205, for the three primary colours light from the first color light source group 201, the second color light source group 202 and three-color light source group 203
Shu Jinhang closing lights form white-light illuminating light beam；Tri-color beam from three-color light source group transmits first dichronic mirror 204
And enter next optical component after the reflection of the second dichronic mirror 205；The second color beam from the second color light source group 202 is first through
One dichronic mirror 204 reflects and is reflected into next optical component through the second dichronic mirror 205 again；From the first color light source group 201
Light beam of the same colour is transmitted into next optical component by the second dichronic mirror 205.
Fig. 3 is a kind of dimensional structure diagram of the embodiment three of non-telecentricity DLP micro projection modules of the present invention；Such as Fig. 3
Shown, from unlike embodiment one, the illuminating bundle b1 first reflects best through the medial surface of asymmetric free-form surface lens 308
Total reflection back lighting light beam b1 ' is transmitted into DMD display chips 309 through asymmetric free-form surface lens 308 again；Shown from DMD
The projected light beam b2 of the outgoing of chip 309 is incident to projection lens 310 through asymmetric free-form surface lens 308.
In sum, the present invention converged using asymmetric free-form surface lens with guiding illumination light beam and projected light beam,
Instead of the illuminating prism and speculum of conventional design, design is succinct, size is small, lightweight, light loss is low and for non-telecentricity sets
The DLP micro projection modules of meter.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is similarly included in scope of patent protection of the invention.
Claims (8)
1. a kind of non-telecentricity DLP micro projection modules, it is characterised in that including：Produce the lighting source of three primary colours light beam；In the future
The color separation lens set that closing light forms white-light illuminating light beam is carried out from the three primary colours light beam of lighting source；By the conversion of white-light illuminating light beam
It is the fly's-eye lens of uniform face light beam；Asymmetric free-form surface lens；DMD display chips；And projection lens；
The asymmetric free-form surface lens, DMD display cores are incident to for converging illuminating bundle of the guiding from fly's-eye lens
Piece, and guided to projection lens from the projected light beam of DMD display chips reflection outgoing and by projected light beam for receiving convergence；
The projected light beam is not parallel light beam, and the projection main beam in the projected light beam is not common with projection lens central optical axis
Axle；Projection main beam is incident from the one side of projection lens central optical axis, then from the another side of projection lens central optical axis
Outgoing；The short side of the DMD display chips and the central optical axis of projection lens are vertical.
2. non-telecentricity DLP micro projection modules according to claim 1, it is characterised in that described from fly's-eye lens
After illuminating bundle first reflects through asymmetric free-form surface lens medial surface, then DMD is transmitted into through asymmetric free-form surface lens
Display chip；From the projected light beam of DMD display chip outgoing projection lens is incident to through asymmetric free-form surface lens.
3. non-telecentricity DLP micro projection modules according to claim 1, it is characterised in that the non-miniature throwings of telecentricity DLP
Shadow module also includes：First relay lens, is arranged at fly's-eye lens front, and the illumination light of fly's-eye lens is come from for converging
Beam.
4. non-telecentricity DLP micro projection modules according to claim 1, it is characterised in that the lighting source includes the
Light source group of the same colour, the second color light source group and three-color light source group, these light source groups include LED light source and are arranged on LED light
Collimation lens set on the light direction of source；The color separation lens set includes the first dichronic mirror and the second dichronic mirror, for coming from
The three primary colours light beam of the first color light source group, the second color light source group and three-color light source group carries out closing light and forms white-light illuminating light
Beam；The non-telecentricity DLP micro projection modules also include：Second relay lens, is arranged at the first dichronic mirror and the second dichronic mirror
Between, the light beam of part light source group is come from for converging.
5. non-telecentricity DLP micro projection modules according to claim 1, it is characterised in that the asymmetric free form surface
The curved surface of lens is described by following formula：
Wherein, Z be curved surface highly, X, Y be respectively curved surface height optical axis projection coordinate, A1 to A9 be location parameter, C and k
It is curvature parameters.
6. non-telecentricity DLP micro projection modules according to claim any one of 1-5, it is characterised in that second color
Light source group and three-color light source group be arranged in parallel；The center light of the central optical axis of the first color light source group and the second color light source group
Axle is vertical.
7. non-telecentricity DLP micro projection modules according to claim any one of 1-5, it is characterised in that first color
Light source group and the second color light source group be arranged in parallel；The central optical axis of the first color light source group and the center light of three-color light source group
Axle is vertical.
8. non-telecentricity DLP micro projection modules according to claim any one of 1-5, it is characterised in that the three primary colours
Light beam is red bluish-green LED beam.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190610.6A CN106842794A (en) | 2017-03-28 | 2017-03-28 | A kind of non-telecentricity DLP micro projection modules |
| PCT/CN2017/085728 WO2018176612A1 (en) | 2017-03-28 | 2017-05-24 | Non-telecentric dlp micro projection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190610.6A CN106842794A (en) | 2017-03-28 | 2017-03-28 | A kind of non-telecentricity DLP micro projection modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106842794A true CN106842794A (en) | 2017-06-13 |
Family
ID=59130011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710190610.6A Pending CN106842794A (en) | 2017-03-28 | 2017-03-28 | A kind of non-telecentricity DLP micro projection modules |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106842794A (en) |
| WO (1) | WO2018176612A1 (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6023373A (en) * | 1998-03-26 | 2000-02-08 | Mixed Reality Systems Laboratory Inc. | Reflective image display apparatus |
| CN201307184Y (en) * | 2008-09-16 | 2009-09-09 | 贾怀昌 | Eyepiece optical element composed of three free curved surfaces |
| CN202049326U (en) * | 2010-12-23 | 2011-11-23 | 利达光电股份有限公司 | DLP (digital light processing) projection optical system based on planar LED light source |
| US20120081800A1 (en) * | 2009-04-20 | 2012-04-05 | Dewen Cheng | Optical see-through free-form head-mounted display |
| CN102645725A (en) * | 2011-02-18 | 2012-08-22 | 扬明光学股份有限公司 | Projection lens and projection device |
| CN103217798A (en) * | 2013-04-16 | 2013-07-24 | 上海晟立电子科技有限公司 | Digital projecting device based on non-telecentric beam path |
| CN203275779U (en) * | 2013-04-28 | 2013-11-06 | 贾怀昌 | LCOS micro display optical system based on RGB surface light source |
| CN103529629A (en) * | 2012-08-30 | 2014-01-22 | 广景科技有限公司 | DLP miniature projector |
| CN104216206A (en) * | 2014-08-20 | 2014-12-17 | 苏州佳世达光电有限公司 | Projection system |
| CN104656231A (en) * | 2013-11-15 | 2015-05-27 | 株式会社理光 | Lens For Projection, And Image Display Device |
| CN204883152U (en) * | 2015-08-03 | 2015-12-16 | 广景视睿科技（深圳）有限公司 | Miniature projector of DLP |
| CN206649273U (en) * | 2017-03-28 | 2017-11-17 | 广景视睿科技（深圳）有限公司 | A kind of non-telecentricity DLP micro projection modules |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1434078B1 (en) * | 2001-10-01 | 2011-04-20 | Panasonic Corporation | Projection type display unit, rear projector and multi-vision system |
| JP2003149599A (en) * | 2001-11-15 | 2003-05-21 | Casio Comput Co Ltd | Projection type display unit |
| CN100351666C (en) * | 2003-08-27 | 2007-11-28 | 卡西欧计算机株式会社 | Projection display system |
| CN102508402B (en) * | 2011-11-23 | 2014-05-21 | 苏州佳世达光电有限公司 | Projection device |
| CN203811977U (en) * | 2014-04-30 | 2014-09-03 | 广景科技有限公司 | DLP mini projector |
| CN203811978U (en) * | 2014-05-15 | 2014-09-03 | 广景科技有限公司 | DLP mini-sized projector |
-
2017
- 2017-03-28 CN CN201710190610.6A patent/CN106842794A/en active Pending
- 2017-05-24 WO PCT/CN2017/085728 patent/WO2018176612A1/en active Application Filing
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6023373A (en) * | 1998-03-26 | 2000-02-08 | Mixed Reality Systems Laboratory Inc. | Reflective image display apparatus |
| CN201307184Y (en) * | 2008-09-16 | 2009-09-09 | 贾怀昌 | Eyepiece optical element composed of three free curved surfaces |
| US20120081800A1 (en) * | 2009-04-20 | 2012-04-05 | Dewen Cheng | Optical see-through free-form head-mounted display |
| CN202049326U (en) * | 2010-12-23 | 2011-11-23 | 利达光电股份有限公司 | DLP (digital light processing) projection optical system based on planar LED light source |
| CN102645725A (en) * | 2011-02-18 | 2012-08-22 | 扬明光学股份有限公司 | Projection lens and projection device |
| CN103529629A (en) * | 2012-08-30 | 2014-01-22 | 广景科技有限公司 | DLP miniature projector |
| CN103217798A (en) * | 2013-04-16 | 2013-07-24 | 上海晟立电子科技有限公司 | Digital projecting device based on non-telecentric beam path |
| CN203275779U (en) * | 2013-04-28 | 2013-11-06 | 贾怀昌 | LCOS micro display optical system based on RGB surface light source |
| CN104656231A (en) * | 2013-11-15 | 2015-05-27 | 株式会社理光 | Lens For Projection, And Image Display Device |
| CN104216206A (en) * | 2014-08-20 | 2014-12-17 | 苏州佳世达光电有限公司 | Projection system |
| CN204883152U (en) * | 2015-08-03 | 2015-12-16 | 广景视睿科技（深圳）有限公司 | Miniature projector of DLP |
| CN206649273U (en) * | 2017-03-28 | 2017-11-17 | 广景视睿科技（深圳）有限公司 | A kind of non-telecentricity DLP micro projection modules |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018176612A1 (en) | 2018-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103529629B (en) | DLP miniature projector | |
| CN203838464U (en) | Linear DLP micro projector | |
| CN202837791U (en) | DLP mini projector | |
| CN205827039U (en) | A kind of DLP projects module | |
| CN204270006U (en) | Linear pattern DLP miniature projector | |
| JP4355381B2 (en) | Illumination device and projection display device using the same | |
| CN208384331U (en) | A kind of projection lighting optical path and projective module group | |
| CN207424511U (en) | A kind of optical projection system and TIR prism group | |
| CN205750256U (en) | A kind of projection lighting optical path | |
| CN104155835B (en) | DLP miniature projector | |
| TW201333531A (en) | Condensing optical system, and projection-type image display device | |
| WO2017012220A1 (en) | Compact projection device | |
| WO2017020636A1 (en) | Dlp mini projector | |
| CN103034034A (en) | Digital optical processing projection device provided with off-axis light-emitting diode (LED) light source | |
| CN202049326U (en) | DLP (digital light processing) projection optical system based on planar LED light source | |
| WO2013063835A1 (en) | Dlp micro projector | |
| CN110703542A (en) | DLP projection system and application thereof | |
| CN207424510U (en) | A kind of RTIR optical elements group and its optical projection system | |
| CN102012616A (en) | Optical engine of multiple-path green light source projector | |
| CN208752376U (en) | Single-lens double screen projection structure | |
| CN205121146U (en) | Novel lighting system and use projection photo engine of this system | |
| US9690180B2 (en) | Prism group and projection apparatus | |
| CN206649273U (en) | A kind of non-telecentricity DLP micro projection modules | |
| TW201333619A (en) | Light source system for stereoscopic projection | |
| CN207557635U (en) | LED light source projection arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
|
| RJ01 | Rejection of invention patent application after publication |