CN102841497A - Novel rear projection screen - Google Patents
Novel rear projection screen Download PDFInfo
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- CN102841497A CN102841497A CN 201210350658 CN201210350658A CN102841497A CN 102841497 A CN102841497 A CN 102841497A CN 201210350658 CN201210350658 CN 201210350658 CN 201210350658 A CN201210350658 A CN 201210350658A CN 102841497 A CN102841497 A CN 102841497A
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- scattering layer
- rear projection
- projection screen
- projector
- scattering
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Abstract
The invention discloses a novel rear projection screen, which comprises a scattering layer and a Fresnel lens layer, the scattering layer is mounted close to a projector, and the Fresnel lens layer is mounted close to the audience. The novel rear projection screen is characterized in that: the light emitted by the projector is first imaged on the scattering layer, the scattering layer utilizes ultrafine particles to scatter the light projected by the projector, so that luminous energy is distributed, and thereby the screen function is fulfilled. The Fresnel lens converges the scattered light projected by the scattering layer toward the audience, so that the scattered light turns into emergent quasi-parallel light, and consequently, the brightness of the screen viewed by the audience is high and uniform at any angle. Because the grooves of the Fresnel lens and the scattering layer are not together, the single-layered rear projection screen integrated with the scattering layer and the Fresnel lens layer is low in cost, and is convenient to mount.
Description
Technical field
The present invention relates to a kind of new projection screen, relate in particular to a kind of rear projection screen.
Background technology
Rear projection screen is divided into optical type rear projection screen and scatter-type rear projection screen two big classes.Optical screen is to utilize fine optical texture to come even luminous energy to distribute, and realizes screen function, the normally combination of three kinds of optical microstructures: Fei Nier lens, cylindrical mirror and black streaking.The scatter-type screen is to utilize minuteness particle to the scattering of light effect, comes even luminous energy to distribute, and realizes screen function.But the problem of optical screen just is its complex structure, and installation and use cost are all too high.And the problem of scattering screen is that scattering particle is to light impartial scattering in 4 π solid spaces in the scattering screen, and the principal direction of projected light entering scattering screen is inconsistent, causes screen middle bright, and the edge is dark, forms the center speck, i.e. solar effect.If abundant scattering can not take place in luminous energy on screen; Energy on the projecting beam principal direction is too high; The scattered light ability is too weak, tangible solar effect will occur, i.e. the crossing part brightness of the line of spectators and camera lens and screen other parts on the screen; And along with the moving of spectators, speck also and then moves.Because respectively scarce to some extent with upper type, therefore, also the someone has absorbed scatter-type screen and optical type screen advantage separately, and the two is combined, and is as the criterion with projector, is followed successively by Fei Nier lens, scattering screen, imaging screen etc.At this moment, light becomes directional light through the Fei Nier lens, then by even scattering.
All are known to comprise in the Screen Technology of Fei Nier lens, and the Fei Nier lens all are positioned at projector's one side, and are as shown in Figure 1, and the light of projector's outgoing at first will be converged by the Fei Nier lens, then could be by cylindrical mirror or scattering layer scattering.But the groove of Fei Nier lens generally will be faced spectators, and the channeled layer of Fei Nier lens can not be combined as a whole with scattering layer, and rear projection screen still is the pattern of sandwich construction, and cost is high, inconvenient installation.
So a kind of individual layer of market in urgent need, have the Fei Nier lens and low-cost rear projection screen scattering layer.
Summary of the invention
The objective of the invention is: a kind of new rear projection screen is provided,, comprises scattering layer and Fei Nier lens jacket successively from projector's one side.Though from the light scattering of process scattering layer earlier that projector sends, as long as Fei Nier lens jacket and scattering layer distance are enough near, the Fei Nier lens jacket also can work the effect of converging to scattered beam.All known Screen Technology that comprise the Fei Nier lens, the Fei Nier lens all are positioned at projector's one side, and the light of projector's outgoing at first will be converged by the Fei Nier lens, then could be by cylindrical mirror or scattering layer scattering.Our invention and conventional art difference are to pass through earlier from the light that projector sends the scattering of scattering layer, then at process Fei Nier lens jacket.
Said projector penetrates light, and said scattering layer utilizes minuteness particle to carry out scattering to the light that projector casts out, and accomplishes luminous energy and distributes.The diverging light that said luxuriant and rich with fragrance Neil lens cast out scattering layer becomes nearly directional light and penetrates, and shines spectators' direction, and like this, the screen intensity that spectators in which angle see is all very high and even.
In an alternative embodiment of the invention,, comprise the cylinder prism array successively, be generally cylindrical lens array, scattering layer and Fei Nier lens jacket from projector's one side.Though the light that sends from projector is earlier through the scattering of cylindrical lens array and scattering layer, as long as Fei Nier lens jacket and scattering layer be apart from enough closely, the Fei Nier lens jacket also can work the effect of converging to scattered beam.
Compare with existing rear projection screen, technical advantage of the present invention is following:
(1) draw diffuser screen and optical panel advantage separately, improve screen gain greatly, improve the visual angle problem of rear projection screen, the screen intensity that makes spectators in which angle see is all very high and even.
(2) scattering layer is near projector's one side, and the Fei Nier lens are near spectators' one side.The groove of luxuriant and rich with fragrance Neil lens jacket is towards spectators, and its another side is the plane, can be combined into one with scattering layer, becomes single layer structure, and cost is low, and is easy for installation, satisfies being widely used in people's daily life.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further description:
Fig. 1 has the structural representation of rear projection screen for prior art
Wherein, 101 projectors; 103 luxuriant and rich with fragrance Neil lens jackets; 105 scattering layers; 106 spectators.
Fig. 2 is the embodiment of the invention one
Wherein, 201 projectors; 203 scattering layers; 205 luxuriant and rich with fragrance Neil lens jackets; 206 spectators.
Fig. 3 is the embodiment of the invention two;
Wherein, 301 projectors; 303 scattering layers; 305 luxuriant and rich with fragrance Neil lens jackets; 306 spectators.
Fig. 4 is the embodiment of the invention three;
Wherein, 401 projectors; 403 is cylindrical lens array and scattering layer; 405 luxuriant and rich with fragrance Neil lens jackets; 406 spectators.
Embodiment one:
Fig. 2 is first embodiment of the present invention, a kind of new rear projection screen, and it includes the scattering layer 203 that is installed near projector's one side, and the Fei Nier lens jacket 205,201 that is installed near spectators' one side is a projector, and 206 is spectators.
Said projector 201, scattering layer 203, Fei Nier lens 205 and spectators 206 arrange successively according to the order of sequence.
Said projector 201 penetrates light, and said scattering layer 203 utilizes minuteness particle to carry out scattering to the light that projector 201 casts out, and evenly luminous energy distributes.The diverging light that said luxuriant and rich with fragrance Neil lens 205 cast out scattering layer 203 becomes nearly directional light and penetrates, and shines spectators' 206 directions, and like this, the screen intensity that spectators in which angle see is all very high and even.
Embodiment two:
Fig. 3 is second embodiment of the present invention, a kind of new rear projection screen, and it includes the scattering layer 303 that is installed near projector's one side; Be molded directly within on the scattering layer 303; Fei Nier lens jacket 305,301 near spectators' one side is a projector, and 306 is spectators.
Said projector 301, scattering layer 303, Fei Nier lens 305 and spectators arrange for 306 layers successively according to the order of sequence.
Said projector 301 penetrates light, and said scattering layer 303 utilizes minuteness particle to carry out scattering to the light that projector casts out, and evenly luminous energy distributes.The diverging light that said luxuriant and rich with fragrance Neil lens 305 cast out scattering layer 303 becomes nearly directional light and penetrates, and shines spectators' 306 directions, and like this, the screen intensity that spectators in which angle see is all very high and even.
Scattering layer 303 is near projector's 301 1 sides, and Fei Nier lens 305 are near spectators' 306 1 sides.The groove of luxuriant and rich with fragrance Neil lens 305 is towards spectators, and its another side is the plane, can be combined into one with scattering layer, becomes single layer structure, and cost is low, and is easy for installation, satisfies being widely used in people's daily life.
Embodiment three:
Fig. 4 is the 3rd embodiment of the present invention; A kind of new rear projection screen; It includes the cylindrical lens array 403 that is installed near projector's one side, generally in cylindrical lens array or on also comprise scattering layer 404, near the Fei Nier lens jacket 405 of spectators' one side; 401 is projector, and 406 is spectators.
Said projector 401, cylindrical lens array 403, scattering layer 404, Fei Nier lens 405 and spectators arrange for 406 layers successively according to the order of sequence.
Said projector penetrates light, and said cylindrical lens array 403 launches light earlier in the horizontal direction, and scattering layer 404 utilizes minuteness particle to carry out scattering to the light that projector 401 casts out, and evenly luminous energy distributes.Acting as of cylindrical lens array 403 and scattering layer 404 enlarges the visual angle.The diverging light that said luxuriant and rich with fragrance Neil lens cast out scattering layer becomes nearly directional light and penetrates, and shines spectators' direction, and like this, the screen intensity that spectators in which angle see is all very high and even.
Scattering layer is near projector's one side, and the Fei Nier lens are near spectators' one side.The groove of luxuriant and rich with fragrance Neil lens jacket is towards spectators, and its another side is the plane, can be combined into one with scattering layer, becomes single layer structure, and cost is low, and is easy for installation, satisfies being widely used in people's daily life.
Claims (5)
1. new rear projection screen, it is characterized in that: said rear projection screen comprises a Fei Nier lens jacket that is installed in spectators' one side.
2. new rear projection screen according to claim 1 is characterized in that: said rear projection screen further comprises the scattering layer near projector's one side; Said scattering layer, Fei Nier lens jacket are arranged successively according to the order of sequence.
3. new rear projection screen according to claim 2 is characterized in that: Fei Nier lens jacket groove is towards spectators, and scattering layer and Fei Nier lens jacket can be combined into one, and becomes a single layer structure.
4. new rear projection screen according to claim 2 is characterized in that: the Fei Nier lens jacket is molded directly within on the scattering layer base material, and Fei Nier lens jacket groove is towards spectators.
5. new rear projection screen according to claim 1 is characterized in that: said rear projection screen further comprises the cylindrical lens array layer near projector's one side; Said cylindrical lens array layer, Fei Nier lens jacket are arranged successively according to the order of sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210350658 CN102841497A (en) | 2012-09-20 | 2012-09-20 | Novel rear projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210350658 CN102841497A (en) | 2012-09-20 | 2012-09-20 | Novel rear projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102841497A true CN102841497A (en) | 2012-12-26 |
Family
ID=47368991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210350658 Pending CN102841497A (en) | 2012-09-20 | 2012-09-20 | Novel rear projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102841497A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372786A (en) * | 2014-07-31 | 2016-03-02 | 南昌欧菲光电技术有限公司 | Lens module and image acquisition device |
| CN111442726A (en) * | 2020-02-28 | 2020-07-24 | 南京南瑞水利水电科技有限公司 | Photoelectric displacement device based on Fresnel lens |
| CN113655686A (en) * | 2021-08-21 | 2021-11-16 | 山东宇影光学仪器有限公司 | Orthographic projection screen with linear Fresnel lens layer |
-
2012
- 2012-09-20 CN CN 201210350658 patent/CN102841497A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372786A (en) * | 2014-07-31 | 2016-03-02 | 南昌欧菲光电技术有限公司 | Lens module and image acquisition device |
| CN111442726A (en) * | 2020-02-28 | 2020-07-24 | 南京南瑞水利水电科技有限公司 | Photoelectric displacement device based on Fresnel lens |
| CN113655686A (en) * | 2021-08-21 | 2021-11-16 | 山东宇影光学仪器有限公司 | Orthographic projection screen with linear Fresnel lens layer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Yongjing Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Wang Yongjing Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |