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CN102854727A - Projecting apparatus - Google Patents

Projecting apparatus Download PDF

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Publication number
CN102854727A
CN102854727A CN2011101834971A CN201110183497A CN102854727A CN 102854727 A CN102854727 A CN 102854727A CN 2011101834971 A CN2011101834971 A CN 2011101834971A CN 201110183497 A CN201110183497 A CN 201110183497A CN 102854727 A CN102854727 A CN 102854727A
Authority
CN
China
Prior art keywords
laser
light source
projection
rotary
laser light
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
Application number
CN2011101834971A
Other languages
Chinese (zh)
Inventor
黄雍伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Priority to CN2011101834971A priority Critical patent/CN102854727A/en
Publication of CN102854727A publication Critical patent/CN102854727A/en
Pending legal-status Critical Current

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  • Projection Apparatus (AREA)

Abstract

The invention provides a projecting apparatus. The projecting apparatus comprises a laser source, a digital micromirror device, a projection lens, and a lens array, wherein the digital micromirror device and the laser source are oppositely arranged, the projection lens and the digital micromirror device are oppositely arranged, and the lens array is arranged between the laser source and the digital micromirror device. The laser light source is used for emitting laser to the digital micromirror device. The digital micromirror device comprises a plurality of micro-reflection mirrors which are arranged in an array manner. Each micro-reflection mirror is used for reflecting the laser to the projection lens which is used for projecting the laser to a screen. The lens array is used for evening the laser emitted from the laser source. The lens array consists of a light-transmission substrate, and a plurality of cones which are arranged on the light-transmission substrate and distributed facing to the micromirror device in an array manner. The central axis of each cone is parallel to the laser emitted from the laser source. The diameters of cross sections of each cone are gradually increased in the direction from one end of each cone, far away from the substrate, to one end close to the substrate.

Description

Projection arrangement
Technical field
The present invention relates to a kind of projection arrangement, relate in particular to a kind of digital optical processing projection device.
Background technology
Along with compactization of consumption electronic products, projection arrangement also is tending towards miniaturization, and hand held projection arrangement or portable projection device more extend to the household leisure with projection arrangement from meeting public affair purposes and use.
General minitype projection machine can be divided into digital light and process (Digital Lighting Process, DLP) projector and silicon wafer light (Liquid Crystal On Silicon) projector.The ubiquitous problem of DLP projector is luminance shortage.In order to overcome this deficiency, many designs change the light source of DLP projector into LASER Light Source by light emitting diode.Yet LASER Light Source but has the problem of light Gaussian distribution inequality, thereby easily causes the projected picture brightness disproportionation, and then affects drop shadow effect.
Summary of the invention
In view of this, be necessary to provide a kind of projection arrangement that can solve the projected picture brightness disproportionation.
A kind of projection arrangement, it comprises LASER Light Source, the digital micro-mirror device that is oppositely arranged with this LASER Light Source, the projection lens that is oppositely arranged with this digital micro-mirror device, and be arranged on lens arra between this LASER Light Source and this digital micro-mirror device.This LASER Light Source is used for Emission Lasers to this digital micro-mirror device.This digital micro-mirror device comprises a plurality of micro-reflectors that are arranged in array.Each micro-reflector is used for laser reflection to this projection lens.This projection lens is used for laser projection to screen.This lens arra is used for will be from the anti-laser homogenising that goes out of this LASER Light Source.This lens arra comprises transparent substrates, and is formed on this transparent substrates and towards a plurality of Rotary-tables that are arranged in array of this digital micro-mirror device.The laser parallel of the central axis of each Rotary-table and the emission of this LASER Light Source.Each Rotary-table away from an end of this substrate on the direction near an end of this substrate, the diameter on each Rotary-table xsect increases gradually.
Projection arrangement of the present invention will be from the anti-laser homogenising that goes out of this LASER Light Source by lens arra is set, thereby can effectively improve the problem of LASER Light Source light Gaussian distribution inequality, and then improves the luminance uniformity of projected picture.
Description of drawings
Fig. 1 is the schematic diagram of the projection arrangement of better embodiment of the present invention.
Fig. 2 is the floor map of the digital micro-mirror device in the projection arrangement of Fig. 1.
The main element symbol description
Projection arrangement 10
LASER Light Source 11
Digital micro-mirror device 12
Lens arra 13
Projection lens 14
Micro-reflector 122
Transparent substrates 132
First surface 1321
Second surface 1322
Rotary-table 134
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with drawings and the embodiments the present invention is described in further detail.
As shown in Figure 1, projection arrangement 10 comprises LASER Light Source 11, digital micro-mirror device (Digital Micromirror Device, DMD) 12, lens arra 13 and projection lens 14.At the present embodiment, projection arrangement 10 is processed (Digital Lighting Process, DLP) projection arrangement for digital light.In the present embodiment, LASER Light Source 11 is laser diode.
Digital micro-mirror device 12 is oppositely arranged with this LASER Light Source 11.This LASER Light Source 11 is used for Emission Lasers to this digital micro-mirror device 12.This digital micro-mirror device 12 comprises the micro-reflector 122 of a plurality of array arrangements.In the present embodiment, for the convenience of describing, digital micro-mirror device 12 only comprises nine micro-reflectors 122, as shown in Figure 2.
Lens arra 13 is arranged between LASER Light Source 11 and the digital micro-mirror device 12.Lens arra 13 can be installed on the exiting surface of LASER Light Source 11 by fixed mechanism.Lens arra 13 is used for will be from the anti-laser homogenising that goes out of LASER Light Source 11.This lens arra 13 comprises transparent substrates 132, and a plurality of Rotary-tables 134.Transparent substrates 132 comprises first surface 1321 and the second surface 1322 that is parallel to each other, and second surface 1322 is towards digital micro-mirror device 12.A plurality of Rotary-tables 134 are formed on second surface 1322.At the diameter of the end face (away from the end face of transparent substrates 132) of each Rotary-table 134 diameter less than its bottom surface (near the end face of transparent substrates 132).Each Rotary-table 134 away from an end of transparent substrates 132 on the direction near an end of transparent substrates 132, the diameter on each Rotary-table 134 xsect increases gradually.The central axis of each Rotary-table 134 is vertical with second surface 1322, and the laser parallel of sending with LASER Light Source.Be appreciated that the quantity of Rotary-table 134 is more in the situation that manufacture craft allows, then the light uniformization effect of this lens arra 13 is better.In the present embodiment, for the convenience of describing, lens arra 13 only comprises three Rotary-tables 134.The diameter D1 of the end face of each Rotary-table 134 is more than or equal to 30 microns, and be less than or equal to 50 microns, the diameter D2 of the bottom surface of each Rotary-table 134 is more than or equal to 100 microns, and be less than or equal to 200 microns, the height H of each Rotary-table 134 is more than or equal to 20 microns, and is less than or equal to 100 microns.In the present embodiment, D1=40 micron, D2=120 micron, H=50 micron.Lens arra 13 is made by the optical grade material, for example, and polymethylmethacrylate (polymethyl methacrylate, PMMA).In the present embodiment, Rotary-table 134 is integrated with transparent substrates 132.Be appreciated that Rotary-table 134 and transparent substrates 132 also can be separately independent moulding, then, Rotary-table 134 is attached on the transparent substrates 132.
Projection lens 14 is oppositely arranged with this digital micro-mirror device 12.Be projected to screen from lens arra 13 emitting lasers through projection lens 14, thereby obtain projected picture.In the present embodiment, projection lens 14 is Varifocal zoom lens.Be appreciated that projection lens 14 also can be tight shot.
In the present embodiment, a LASER Light Source 11 is oppositely arranged with lens arra 13.Be appreciated that projection arrangement 10 can comprise a plurality of LASER Light Source 11 along line spread, a plurality of LASER Light Source 11 and a lens arra 13 are oppositely arranged.
Projection arrangement of the present invention will be from the anti-laser homogenising that goes out of this LASER Light Source by lens arra is set, thereby can effectively improve the problem of LASER Light Source light Gaussian distribution inequality, and then improves the luminance uniformity of projected picture.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.

Claims (7)

1. projection arrangement, it comprises:
LASER Light Source;
With the digital micro-mirror device that this LASER Light Source is oppositely arranged, this LASER Light Source is used for Emission Lasers to this digital micro-mirror device, and this digital micro-mirror device comprises a plurality of micro-reflectors that are arranged in array;
With the projection lens that this digital micro-mirror device is oppositely arranged, each micro-reflector is used for laser reflection to this projection lens, and this projection lens is used for laser projection to screen;
It is characterized in that, this projection arrangement further comprises:
Lens arra, this lens arra is between this LASER Light Source and this digital micro-mirror device, this lens arra is used for will be from the anti-laser homogenising that goes out of this LASER Light Source, this lens arra comprises transparent substrates, and be formed on this transparent substrates and towards a plurality of Rotary-tables that are arranged in array of this digital micro-mirror device, the laser parallel of the central axis of each Rotary-table and the emission of this LASER Light Source, each Rotary-table away from an end of this substrate on the direction near an end of this substrate, the diameter on each Rotary-table xsect increases gradually.
2. projection arrangement as claimed in claim 1 is characterized in that, this LASER Light Source is laser LED.
3. projection arrangement as claimed in claim 1 is characterized in that, this projection lens is Varifocal zoom lens.
4. projection arrangement as claimed in claim 1 is characterized in that, this projection arrangement is digital optical processing projection device.
5. projection arrangement as claimed in claim 1 is characterized in that, the height of each Rotary-table is more than or equal to 20 microns, and is less than or equal to 100 microns.
6. projection arrangement as claimed in claim 1 is characterized in that, each Rotary-table more than or equal to 30 microns, and is less than or equal to 50 microns away from the diameter of the end face of this substrate.
7. projection arrangement as claimed in claim 1 is characterized in that, each Rotary-table more than or equal to 100 microns, and is less than or equal to 200 microns near the diameter of the end face of this substrate.
CN2011101834971A 2011-07-01 2011-07-01 Projecting apparatus Pending CN102854727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101834971A CN102854727A (en) 2011-07-01 2011-07-01 Projecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101834971A CN102854727A (en) 2011-07-01 2011-07-01 Projecting apparatus

Publications (1)

Publication Number Publication Date
CN102854727A true CN102854727A (en) 2013-01-02

Family

ID=47401430

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101834971A Pending CN102854727A (en) 2011-07-01 2011-07-01 Projecting apparatus

Country Status (1)

Country Link
CN (1) CN102854727A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106444252A (en) * 2016-11-24 2017-02-22 安徽师范大学 Low-cost miniature projection system based on LEDs and lenses
FR3049681A1 (en) * 2016-03-30 2017-10-06 Valeo Vision LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE, AND LIGHTING AND / OR SIGNALING LIGHT EQUIPPED WITH SUCH A DEVICE

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1532590A (en) * 2003-03-24 2004-09-29 伊斯曼柯达公司 Electric imaging system using organic laser matrix radiation area light valve
US20050286123A1 (en) * 2003-06-10 2005-12-29 Abu-Ageel Nayef M Compact projection system including a light guide array
CN101191870A (en) * 2006-11-24 2008-06-04 鸿富锦精密工业（深圳）有限公司 Optical plate and its preparation method
CN101299112A (en) * 2007-04-30 2008-11-05 鸿富锦精密工业（深圳）有限公司 Back light module unit and optical panel thereof
CN101345236A (en) * 2008-05-07 2009-01-14 蒋峰 Evenly illuminated white light LED module group packaging optical scheme
CN101369050A (en) * 2007-08-13 2009-02-18 亚洲光学股份有限公司 Zooming projection lens
CN101865419A (en) * 2009-04-20 2010-10-20 颖台科技股份有限公司 Microstructured diffuser plate
CN102081291A (en) * 2009-11-27 2011-06-01 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1532590A (en) * 2003-03-24 2004-09-29 伊斯曼柯达公司 Electric imaging system using organic laser matrix radiation area light valve
US20050286123A1 (en) * 2003-06-10 2005-12-29 Abu-Ageel Nayef M Compact projection system including a light guide array
CN101191870A (en) * 2006-11-24 2008-06-04 鸿富锦精密工业（深圳）有限公司 Optical plate and its preparation method
CN101299112A (en) * 2007-04-30 2008-11-05 鸿富锦精密工业（深圳）有限公司 Back light module unit and optical panel thereof
CN101369050A (en) * 2007-08-13 2009-02-18 亚洲光学股份有限公司 Zooming projection lens
CN101345236A (en) * 2008-05-07 2009-01-14 蒋峰 Evenly illuminated white light LED module group packaging optical scheme
CN101865419A (en) * 2009-04-20 2010-10-20 颖台科技股份有限公司 Microstructured diffuser plate
CN102081291A (en) * 2009-11-27 2011-06-01 卡西欧计算机株式会社 Light source device, projection apparatus, and projection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3049681A1 (en) * 2016-03-30 2017-10-06 Valeo Vision LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE, AND LIGHTING AND / OR SIGNALING LIGHT EQUIPPED WITH SUCH A DEVICE
CN106444252A (en) * 2016-11-24 2017-02-22 安徽师范大学 Low-cost miniature projection system based on LEDs and lenses

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Application publication date: 20130102