CN101271261A - Single lens stereographic projection device and optical filtering color block - Google Patents
Single lens stereographic projection device and optical filtering color block Download PDFInfo
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- CN101271261A CN101271261A CNA2008100668629A CN200810066862A CN101271261A CN 101271261 A CN101271261 A CN 101271261A CN A2008100668629 A CNA2008100668629 A CN A2008100668629A CN 200810066862 A CN200810066862 A CN 200810066862A CN 101271261 A CN101271261 A CN 101271261A
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Abstract
The invention discloses a single-lens solid projecting device which comprises a light source and a filter wheel, a digital micro-mirror chip and a projection lens which are orderly arranged along the spreading direction of the light source. The filter wheel is used for periodically filtering three kinds of primary color lights of red, green and blue. The digital micro-mirror chip reflects the three kinds of primary colors to the projection lens to be imaged by the action of the projection lens. The filter wheel is provided with three polarization filtering units respectively corresponding to three kinds of primary color lights. Each polarization filtering unit comprises two polarization filtering plates with orthogonal polarization directions and generates unicolor polarized lights with different polarization states by turns. The invention also discloses a filter wheel which comprises three polarization filtering units respectively corresponding to the three kinds of primary colors of red, green and blue, and each polarization filtering unit comprises two polarization filtering plates with orthogonal polarization directions. Solid projection can be realized by one lens module according to the device which has the simple structure and the convenient use and is in favor of the miniaturization of a device.
Description
[technical field]
The present invention relates to projection field, especially relate to a kind of single-lens stereo projection apparatus and optical filtering colour wheel.
[background technology]
Common 3 D stereo output display mode is all utilized two different light of projector's projected polarisation direction, by the polarized light three-dimensional imaging.Producing polarized light is to utilize the polarisation of light effect.Because project the polarized light of the only polarization direction quadrature on the screen, the beholder wears polaroid glasses, each glasses all can only see through polarized light separately.During concrete operations, make a kind of image of polarized light projection left eye, the image of another kind of polarized light projection right eye, the image seen of each glasses of beholder is just inequality like this.The image ECDC that right and left eyes is seen becomes space image.The shortcoming of prior art is, stereopsis must use two projector's synchronous playing when playing, but also need take certain measure with two projector's relative fixed, and the picture of projection is had certain positioning requirements, this makes installs and uses all more complicated.Simultaneously, adopt two projectors also to be unfavorable for device miniaturization.
[summary of the invention]
Fundamental purpose of the present invention solves the problems of the prior art exactly, and a kind of single-lens stereo projection apparatus that uses a camera lens module just can realize three-dimensional imaging is provided.
Another object of the present invention provides a kind of optical filtering colour wheel that can be used on the described single-lens stereo projection apparatus.
For achieving the above object, the present invention is by the following technical solutions:
A kind of single-lens stereo projection apparatus, comprise light source and the optical filtering colour wheel that sets gradually along the light source direction of propagation, digital micro-mirror chip (DMD) and projection lens, described optical filtering colour wheel is used for periodically filtering red, green, blue three kinds of primitive color lights, described digital micro-mirror chip reflexes to described projection lens with three kinds of primitive color lights and through the effect of described projection lens and imaging, it is characterized in that: described optical filtering colour wheel is provided with three polarizing filter unit that correspond respectively to three kinds of primary colors, each polarizing filter unit comprises two polarizing filters of polarization direction quadrature, generates the monochromatic polarized light of different polarization states in turn.
In the preferred scheme, two polarizing filters of described polarizing filter unit are about center, the axle center symmetry of described optical filtering colour wheel.
Be provided with light shielding block between the adjacent polarizing filter.
Also comprise the light source shaping lens that is arranged between described light source and the described optical filtering colour wheel.
Described light source is a light emitting diode.
A kind of optical filtering colour wheel, be used for periodically filtering three kinds of primitive color lights of red, green, blue, it is characterized in that: comprise three polarizing filter unit that correspond respectively to three kinds of primary colors of red, green, blue, each polarizing filter unit comprises two polarizing filters of polarization direction quadrature.
In the preferred scheme, two polarizing filters of described polarizing filter unit are about center, the axle center symmetry of described optical filtering colour wheel.
Be provided with light shielding block between the adjacent polarizing filter.
The invention has the beneficial effects as follows:
Among the present invention, the optical filtering colour wheel is provided with three polarizing filter unit corresponding to three kinds of primary colors, each polarizing filter unit comprises two polarizing filters of polarization direction quadrature, the optical filtering colour wheel is placed between light source and the digital micro-mirror chip, when the optical filtering colour wheel rotates, two polarizing filters of each polarizing filter unit are converted to light signal the monochromatic light of two polarization states respectively in turn, utilize outside video control signal control figure micro mirror chip that primitive color light is reflected, again through the projection lens effect, can project the polarized light of the different polarization states that replaces rapidly, the onlooker just can see stereopsis by polaroid glasses.Therefore, the present invention only uses a camera lens module just to realize stereoprojection, adopts two projectors to throw in stereopsis with prior art and compares, and single-lens stereo projection apparatus structure of the present invention is more simple, install, use more convenient, the miniaturization of also easier realization projector equipment.
[description of drawings]
Fig. 1 is the structural representation of the single-lens stereo projection apparatus of an embodiment of the present invention;
Fig. 2 is the structural representation of the optical filtering colour wheel of an embodiment of the present invention.
[embodiment]
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Please refer to Fig. 1, single-lens stereo projection apparatus comprises that light source 1 is projection lamp 1 and is successively set on optical filtering colour wheel 3, digital micro-mirror chip 4 and projection lens 5 on the light path along the light source direction of propagation, also preferably is provided with light source shaping lens 2 between projection lamp 1 and optical filtering colour wheel 3.Optical filtering colour wheel 3 is monochromatic polarized light with the light filter that projection lamp 1 sends, and shines on the digital micro-mirror chip 4 again, reflexes to projection lens 5 by digital micro-mirror chip 4, realization projection after projection lens 5 is adjusted.
Please refer to Fig. 1 and Fig. 2, optical filtering colour wheel 3 is provided with three polarizing filter unit corresponding to three kinds of primary colors of red, green, blue, and the light filter of periodically projection lamp 1 being sent during 3 rotations of optical filtering colour wheel is three kinds of monochromatic light of red, green, blue.Different with the colour wheel that was used to obtain three kinds of primitive color lights merely in the past, optical filtering colour wheel 3 also has the polarization to light signal except filter action.Each polarizing filter unit includes two polarizing filters of polarization direction quadrature, can generate the monochromatic light of different polarization states respectively to the incident light source effect.In the present embodiment, these three polarizing filter unit are respectively red units, green cell and blue cell, and wherein, red units comprises red polarizing filter 1a and 1b, green cell comprises green polarizing filter 2a and 2b, and blue cell comprises blue polarizing filter 3a and 3b.Two polarizing filters of above-mentioned each unit are about the distribution that is centrosymmetric of the axle center of optical filtering colour wheel 3.As improvement, also be provided with light shielding block C between the adjacent polarizing filter, can prevent that like this aliasing of color from appearring in two zone of transition between the not homochromy optical filter because of processing problems.During 3 rotations of optical filtering colour wheel, each polarizing filter is printing opacity successively, obtains the monochromatic polarized light of three kinds of primary colors, and every kind of primitive color light comprises two kinds of different polarization states light again.With Fig. 2 is example, and from the red polarizing filter 1a beginning, optical filtering colour wheel 3 produces red light, green light and the blue light of red light, green light, blue light and second kind of polarization state of first kind of polarization state successively.
Digital micro-mirror chip 4 has a lot of reflection micro mirrors, and each reflects the switching capability that micro mirror all has independent control light, and catoptron is controlled by outer video signal to the reflection of light.By Digital Light Processor (DLP), with the pulse-width signal of outer video signal modulation formation constant amplitude, utilize the time of each catoptron open and close light path of pulse width size control again, thereby control the reflective condition of the monochromatic polarized light of three kinds of primary colors.Between digital micro-mirror chip 4 and the optical filtering colour wheel 3 the synchro control measure is set also, guarantees the light of correct color and polarization attitude is projected to projection lens 5.When human eye is watched after projection lens 5 corrective actions imaging, because the persistence of vision effect, can think the polarized light of seeing two kinds of polarization states simultaneously.After going up special-purpose anaglyph spectacles, every eyes are all only seen wherein a kind of image of polarization state light, produce stereoeffect therefrom.
In another kind of embodiment, three polarizing filter unit of optical filtering colour wheel 3 shown in Figure 2 are arranged in the following manner.Wherein, red units comprises red polarizing filter 1a and 2a, and green cell comprises green polarizing filter 3a and 1b, and blue cell comprises blue polarizing filter 2b and 3b.Two polarizing filters of above-mentioned each unit distribute axisymmetricly about a straight line of crossing its axle center on optical filtering colour wheel 3 planes.Equally, in optical filtering colour wheel 3 swing circles, two polaroids of different polarization direction are alternately to occur, and also can produce the effect of three kinds of monochromatic dual-polarization attitude light.
Among the present invention, projection lamp 1 can adopt light emitting diode (LED) projection lamp as white light source.Projection lens 5 can select manual zoom or power zoom to adjust the size and the distance of projection image.In addition, also can set up dust guard, can't work because of being stained with dust to avoid the digital micro-mirror chip.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. single-lens stereo projection apparatus, comprise light source and the optical filtering colour wheel that sets gradually along the light source direction of propagation, digital micro-mirror chip and projection lens, described optical filtering colour wheel is used for periodically filtering red, green, blue three kinds of primitive color lights, described digital micro-mirror chip reflexes to described projection lens with three kinds of primitive color lights and through the effect of described projection lens and imaging, it is characterized in that: described optical filtering colour wheel is provided with three polarizing filter unit that correspond respectively to three kinds of primary colors, each polarizing filter unit comprises two polarizing filters of polarization direction quadrature, generates the monochromatic polarized light of different polarization states in turn.
2. single-lens stereo projection apparatus as claimed in claim 2 is characterized in that: two polarizing filters of described polarizing filter unit are about center, the axle center symmetry of described optical filtering colour wheel.
3. single-lens stereo projection apparatus as claimed in claim 1 or 2 is characterized in that: be provided with light shielding block between the adjacent polarizing filter.
4. single-lens stereo projection apparatus as claimed in claim 1 or 2 is characterized in that: also comprise the light source shaping lens that is arranged between described light source and the described optical filtering colour wheel.
5. single-lens stereo projection apparatus as claimed in claim 1 or 2 is characterized in that: described light source is a light emitting diode.
6. optical filtering colour wheel, be used for periodically filtering three kinds of primitive color lights of red, green, blue, it is characterized in that: comprise three polarizing filter unit that correspond respectively to three kinds of primary colors of red, green, blue, each polarizing filter unit comprises two polarizing filters of polarization direction quadrature.
7. optical filtering colour wheel as claimed in claim 7 is characterized in that: two polarizing filters of described polarizing filter unit are about center, the axle center symmetry of described optical filtering colour wheel.
8. as claim 7 or 8 described optical filtering colour wheels, it is characterized in that: be provided with light shielding block between the adjacent polarizing filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100668629A CN101271261A (en) | 2008-04-25 | 2008-04-25 | Single lens stereographic projection device and optical filtering color block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100668629A CN101271261A (en) | 2008-04-25 | 2008-04-25 | Single lens stereographic projection device and optical filtering color block |
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| CN101271261A true CN101271261A (en) | 2008-09-24 |
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| CNA2008100668629A Pending CN101271261A (en) | 2008-04-25 | 2008-04-25 | Single lens stereographic projection device and optical filtering color block |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142144A1 (en) * | 2009-06-12 | 2010-12-16 | 绎立锐光科技开发(深圳)有限公司 | Polarized light source and polarization converting method and device thereof |
| EP2533540A1 (en) * | 2011-06-11 | 2012-12-12 | Infitec GmbH | Objective for a projector or for a camera with a filter configuration for a image data selection |
| CN103634582A (en) * | 2012-08-27 | 2014-03-12 | 台达电子工业股份有限公司 | Display and displaying method |
| CN103901711A (en) * | 2012-12-28 | 2014-07-02 | 台达电子工业股份有限公司 | Stereo image light source system |
| CN105093801A (en) * | 2014-05-22 | 2015-11-25 | 上海华博信息服务有限公司 | Monoblock stereographic projection device based on color dividing |
| CN107680474A (en) * | 2017-09-01 | 2018-02-09 | 中国船舶重工集团公司第七0七研究所 | Sea chart plotting system based on high brightness laser projection structure |
| CN110119057A (en) * | 2018-02-07 | 2019-08-13 | 深圳光峰科技股份有限公司 | Projection device |
| CN111683236A (en) * | 2020-03-11 | 2020-09-18 | 潍坊学院 | Light-combining reflector invisible prompter projector system and data superposition processing method |
| CN113109986A (en) * | 2020-01-10 | 2021-07-13 | 明基智能科技（上海）有限公司 | Projection device |
-
2008
- 2008-04-25 CN CNA2008100668629A patent/CN101271261A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8888297B2 (en) | 2009-06-12 | 2014-11-18 | Appotronics Corporation Limited | Polarized light source and polarization converting method and device thereof |
| WO2010142144A1 (en) * | 2009-06-12 | 2010-12-16 | 绎立锐光科技开发(深圳)有限公司 | Polarized light source and polarization converting method and device thereof |
| EP2533540A1 (en) * | 2011-06-11 | 2012-12-12 | Infitec GmbH | Objective for a projector or for a camera with a filter configuration for a image data selection |
| WO2012171626A1 (en) * | 2011-06-11 | 2012-12-20 | Infitec Gmbh | Objective for a projector or a camera having a filter arrangement for image data selection |
| CN103634582A (en) * | 2012-08-27 | 2014-03-12 | 台达电子工业股份有限公司 | Display and displaying method |
| CN103901711B (en) * | 2012-12-28 | 2016-08-03 | 台达电子工业股份有限公司 | Stereo-picture light-source system |
| CN103901711A (en) * | 2012-12-28 | 2014-07-02 | 台达电子工业股份有限公司 | Stereo image light source system |
| CN105093801A (en) * | 2014-05-22 | 2015-11-25 | 上海华博信息服务有限公司 | Monoblock stereographic projection device based on color dividing |
| CN107680474A (en) * | 2017-09-01 | 2018-02-09 | 中国船舶重工集团公司第七0七研究所 | Sea chart plotting system based on high brightness laser projection structure |
| CN110119057A (en) * | 2018-02-07 | 2019-08-13 | 深圳光峰科技股份有限公司 | Projection device |
| WO2019153636A1 (en) * | 2018-02-07 | 2019-08-15 | 深圳光峰科技股份有限公司 | Projector device |
| CN110119057B (en) * | 2018-02-07 | 2021-05-04 | 深圳光峰科技股份有限公司 | Projection device |
| CN113109986A (en) * | 2020-01-10 | 2021-07-13 | 明基智能科技（上海）有限公司 | Projection device |
| CN111683236A (en) * | 2020-03-11 | 2020-09-18 | 潍坊学院 | Light-combining reflector invisible prompter projector system and data superposition processing method |
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Open date: 20080924 |