CN104597707A - Projection system and screen thereof - Google Patents
Projection system and screen thereof Download PDFInfo
- Publication number
- CN104597707A CN104597707A CN201410819579.4A CN201410819579A CN104597707A CN 104597707 A CN104597707 A CN 104597707A CN 201410819579 A CN201410819579 A CN 201410819579A CN 104597707 A CN104597707 A CN 104597707A
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- China
- Prior art keywords
- lens
- reflection mirror
- mirror array
- plane
- screen
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- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/602—Lenticular screens
-
- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
A screen comprises a lens array and a reflector array which are oppositely arranged; the lens array comprises a plurality of lenses for collecting projection beams which enter the lens surfaces into parallel beams, and the parallel beams are projected on the reflector array; the reflector array comprises a plurality of reflectors consisting of incident surfaces and reflecting surfaces, wherein the incident surfaces face the lens array; the parallel beams transmitted from the incident surfaces are collected and projected on the reflecting surfaces, the reflecting surfaces reflect the collected beams, then the reflected beams sequentially pass through the incident surfaces of the reflectors and a transmitting mirror to form outgoing beams to be emitted out; the divergence angles of the outgoing beams are more than those of the projected beams. According to the screen, the divergence angles of the outgoing beams are increased, so that the divergence uniformity of the outgoing beams is improved, the brightness of the image viewed from each angle is soft and does not lead to dazzling. The invention further comprises a projection system.
Description
Technical field
The present invention relates to light and shadow imaging device, particularly relate to a kind of optical projection system and screen thereof.
Background technology
Optical projection system is imaging on screen, and projected light beam projects on screen, and projected light beam, on screen, diffuse reflection occurs, and irreflexive light enters human eye, beholder thus see projected image.Because projected light beam, in imaging region, diffuse reflection occurs, the distribution of light that diffuse reflection reflects is uneven, is positioned at the distribution of imaging region middle position reflection ray more, is positioned at the distribution of imaging region peripheral position reflection ray less.Therefore be positioned at the beholder of diverse location, the screen intensity experienced is different, and the brightness of part viewing areas is comparatively strong, and the brightness of part viewing areas is more weak.Therefore, the imaging effect of optical projection system is affected.
Summary of the invention
Based on this, be necessary to provide a kind of screen intensity can be made to be evenly distributed optical projection system and screen.
A kind of screen, comprise lens arra and reflection mirror array, described lens arra and described reflection mirror array are oppositely arranged;
Described lens arra comprises multiple lens, and multiple described lens are array distribution, and described lens are used for the projected light beam being incident in described lens surface to pool parallel beam, and described parallel beam projects on described reflection mirror array;
Described reflection mirror array comprises multiple catoptron, multiple described catoptron is array distribution, described catoptron comprises the plane of incidence and reflecting surface, the described plane of incidence is towards described lens arra, converged from the parallel beam of plane of incidence transmission and be projeced into described reflecting surface, described converging beam also reflects back by described reflecting surface, described folded light beam is successively through the plane of incidence and the described diaphotoscope of described catoptron, form outgoing beam outgoing, the angle of divergence of described outgoing beam is greater than the angle of divergence of described projected light beam.
Wherein in an embodiment, described lens are convex lens.
Wherein in an embodiment, described lens comprise transmission plane, and described transmission plane is located at the side of described lens near described reflection mirror array, and described transmission plane is arc convex.
Wherein in an embodiment, described reflecting surface is arc-shaped concave, and the radius-of-curvature of described reflecting surface is greater than the radius-of-curvature of described transmission plane.
Wherein in an embodiment, the described plane of incidence is arc convex.
Wherein in an embodiment, also comprise absorption panel, described absorption panel is located at the side of described reflection mirror array away from described lens arra, and described absorption panel is for absorbing spuious light beam.
Wherein in an embodiment, described absorption panel is provided with absorbing membranous layer near the surface of described reflection mirror array.
Wherein in an embodiment, also comprise glue-line, described glue-line is located between described lens arra and described reflection mirror array, and described glue-line connects described lens arra and described reflection mirror array.
Wherein in an embodiment, described glue-line is located between described reflection mirror array and described absorption panel, and described glue-line connects described reflection mirror array and described absorption panel.
A kind of optical projection system, comprises above-mentioned screen.
In optical projection system containing above-mentioned screen, projected light beam scioptics array pools converging beam, can strengthen the brightness of image imaging.Converging beam is again through reflection mirror array reflection, outgoing.The angle of divergence of outgoing beam is greater than the angle of divergence of projected light beam.The angle of divergence of outgoing beam is increased, outgoing beam is disperseed more even, make at all angles viewing screen, the brightness of the image seen is all comparatively soft, can not be dazzling, improves the imaging effect of optical projection system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the screen of present embodiment.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Better embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make to disclosure of the present invention understand more thorough comprehensively.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe concrete embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 1, the screen 100 of present embodiment comprises lens arra 110, reflection mirror array 120 and absorption panel 130.Lens arra 110 and reflection mirror array 120 are oppositely arranged.Absorption panel 130 is located at the side of reflection mirror array 120 away from lens arra 110.
Lens arra 110 comprises multiple lens 111.Multiple lens 111 are in array distribution.Lens 111 are for pooling parallel beam 21 by the projected light beam 20 being incident in lens 111 surface, and parallel beam 21 projects on reflection mirror array 120.
Lens 111 are convex lens.Lens 111 comprise transmission plane 112.Transmission plane 112 is located at the side of lens 111 near reflection mirror array 120, and transmission plane 112 is arc convex.The side relative with transmission plane 112 is plane, ensures the smooth of screen 100 surface, light is better incident in lens 111.
Projected light beam 20 with image information penetrates from the camera lens of optical projection system, and screen 100 often has certain distance relative to camera lens.Distance between screen 100 and camera lens is far away, and the projected light beam 20 inciding screen 100 is loose all the more, and brightness is less, then the brightness of screen 100 imaging is also lower.Projected light beam 20 is assembled through lens arra 110, the brightness of projected light beam 20 is concentrated.
Reflection mirror array 120 comprises multiple catoptron 121.Multiple catoptron 121 is in array distribution.Catoptron 121 comprises the plane of incidence 122 and reflecting surface 124.The plane of incidence 122 is towards lens arra 110.Converging beam 23 is formed by convergence from the parallel beam 21 of the plane of incidence 122 transmission.Converging beam 23 projects on reflecting surface 124.Converging beam 23 has convergence trend relative to directional light 21.Converging beam 23 can to converge in catoptron 121 a bit, also can converge at catoptron 121 away from lens 111 side a bit on.Converging beam 23 reflects back and forms folded light beam 25 by reflecting surface 124.
Folded light beam 25 converges in catoptron 121, and folded light beam 25 through the plane of incidence 122 and the diaphotoscope 111 of catoptron 121, forms outgoing beam 27 outgoing successively.Projected light beam 20 is converged to parallel beam 21 through lens 111, and this parallel beam 21 reflects through the plane of incidence 122, converges on reflecting surface 124.Therefore, the brightness of projected light beam 20 is concentrated further, ensures the brightness of projected light beam 20 imaging on screen 100.
Projected light beam 20 imaging on reflecting surface 124.
Converging beam 23 reflects back through reflecting surface 124 and forms folded light beam 25.Folded light beam 25 converges through reflecting surface 124.Folded light beam 25 to converge in screen 100 a bit.Through convergent point, folded light beam 25 is dispersed, and forms outgoing beam 27 through lens arra 110 transmission.The angle of divergence of outgoing beam 27 is greater than the angle of divergence of projected light beam 20.
The plane of incidence 122 is arc convex.The plane of incidence 122 is relative to the planar projections at lens arra 110 place.Reflecting surface 124 is arc-shaped concave, and reflecting surface 124 is relative to the planar recess at lens arra 110 place.Particularly, the plane of incidence 122 is hemisphere face.Reflecting surface 124 is coated with reflectance coating.The radius-of-curvature of reflecting surface 124 is greater than the radius-of-curvature of the transmission plane 112 of lens 111, then ensure that folded light beam 25 can to converge in screen 100 a bit.The angle of divergence of the outgoing beam 27 then sent from this convergent point is greater than the angle of divergence of projected light beam 20, and make at all angles viewing screen 100, the brightness of the image seen is all comparatively soft, can not be dazzling.
Further, incide on screen 100 with the environment light beam 30 of large angle incidence from environment, through lens arra 110 and reflection mirror array 120, environment light beam 30 can be gone out with wide-angle reflection.Therefore, environment light beam 30 after screen 100 reflects, due to wide-angle outgoing, environment light beam 30 through reflecting is not in the angular field of view of human eye, and therefore, the human eye of beholder can't see environment light beam 30, therefore, screen 100 can avoid environment light beam 30 on the impact of the brightness of screen 100.
Absorption panel 130 is for absorbing spuious light beam.Incide converging beam 23 on reflecting surface 24 or environment light beam 30 may have part light transmission reflecting surface 24 and form parasitic light, absorption panel 130 absorbs the parasitic light through reflecting surface.Parasitic light strengthens the brightness of screen 100.After absorption panel 130 absorbs parasitic light, reduce the brightness of screen 100 background, thus improve screen 100 become the contrast of brightness of image.
Absorption panel 130 can be glass or ground glass.Absorption panel 130 is provided with absorbing membranous layer 131 near the surface of reflection mirror array 120.Absorbing membranous layer 131 is black coating.
Screen 100 also comprises glue-line 140.Glue-line 140 is located between lens arra 110 and reflection mirror array 120, and glue-line 140 connects lens arra 110 and reflection mirror array 120.Glue-line 140 is also located between reflection mirror array 120 and absorption panel 130, and glue-line 140 connects reflection mirror array 12 and absorption panel 130.
The refractive index of glue-line 140 and the refractive index close of air.Glue-line 140 for refractive index be the transparent liquid glue of 1.0.When light is from lens arra 110 outgoing, be incident on reflection mirror array 120 through glue-line 140, the parasitic light through reflection mirror array 120 absorbs through absorption panel 130.The refractive index of glue-line 140 is 1.0, and can reduce glue-line 140 affects light transmition.
In above-mentioned screen 100, projected light beam 20 scioptics array 110 pools converging beam 23, can strengthen the brightness of image imaging.Converging beam 23 reflects through reflection mirror array 120 again, outgoing.The angle of divergence of outgoing beam 27 is greater than the angle of divergence of projected light beam 20.The angle of divergence of outgoing beam 27 is increased, outgoing beam 27 is disperseed more even, the intensity distributions then entering the outgoing beam 27 of human eye is also comparatively even, make at all angles viewing screen, the brightness of the image seen is all comparatively soft, can not be dazzling, improve the imaging effect of optical projection system.
A kind of optical projection system is also provided.
The optical projection system of present embodiment comprises above-mentioned screen 100.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a screen, is characterized in that, comprises lens arra and reflection mirror array, and described lens arra and described reflection mirror array are oppositely arranged;
Described lens arra comprises multiple lens, and multiple described lens are array distribution, and described lens are used for the projected light beam being incident in described lens surface to pool parallel beam, and described parallel beam projects on described reflection mirror array;
Described reflection mirror array comprises multiple catoptron, multiple described catoptron is array distribution, described catoptron comprises the plane of incidence and reflecting surface, the described plane of incidence is towards described lens arra, converged from the parallel beam of plane of incidence transmission and be projeced into described reflecting surface, described converging beam also reflects back by described reflecting surface, described folded light beam is successively through the plane of incidence and the described diaphotoscope of described catoptron, form outgoing beam outgoing, the angle of divergence of described outgoing beam is greater than the angle of divergence of described projected light beam.
2. screen according to claim 1, is characterized in that, described lens are convex lens.
3. screen according to claim 2, is characterized in that, described lens comprise transmission plane, and described transmission plane is located at the side of described lens near described reflection mirror array, and described transmission plane is arc convex.
4. screen according to claim 3, is characterized in that, described reflecting surface is arc-shaped concave, and the radius-of-curvature of described reflecting surface is greater than the radius-of-curvature of described transmission plane.
5. screen according to claim 1, is characterized in that, the described plane of incidence is arc convex.
6. screen according to claim 1, is characterized in that, also comprises absorption panel, and described absorption panel is located at the side of described reflection mirror array away from described lens arra, and described absorption panel is for absorbing spuious light beam.
7. screen according to claim 6, is characterized in that, described absorption panel is provided with absorbing membranous layer near the surface of described reflection mirror array.
8. screen according to claim 7, is characterized in that, also comprises glue-line, and described glue-line is located between described lens arra and described reflection mirror array, and described glue-line connects described lens arra and described reflection mirror array.
9. screen according to claim 8, is characterized in that, described glue-line is located between described reflection mirror array and described absorption panel, and described glue-line connects described reflection mirror array and described absorption panel.
10. an optical projection system, is characterized in that, comprises the screen described in claim 1 ~ 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819579.4A CN104597707B (en) | 2014-12-24 | 2014-12-24 | Optical projection system and screen thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819579.4A CN104597707B (en) | 2014-12-24 | 2014-12-24 | Optical projection system and screen thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104597707A true CN104597707A (en) | 2015-05-06 |
| CN104597707B CN104597707B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819579.4A Expired - Fee Related CN104597707B (en) | 2014-12-24 | 2014-12-24 | Optical projection system and screen thereof |
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| Country | Link |
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| CN (1) | CN104597707B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017193782A1 (en) * | 2016-05-12 | 2017-11-16 | 深圳市光峰光电技术有限公司 | Projection screen |
| CN107632490A (en) * | 2016-07-19 | 2018-01-26 | 深圳市光峰光电技术有限公司 | A kind of reflective micro-structural, projection screen and optical projection system |
| CN108563094A (en) * | 2018-05-04 | 2018-09-21 | 广州艾恩电子有限公司 | A kind of projection screen |
| CN109143765A (en) * | 2018-11-05 | 2019-01-04 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN109188847A (en) * | 2018-11-05 | 2019-01-11 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN111240138A (en) * | 2018-11-29 | 2020-06-05 | 宁波舜宇车载光学技术有限公司 | Optical projection system |
| CN112130236A (en) * | 2020-09-29 | 2020-12-25 | 厦门天马微电子有限公司 | Low-reflection structure, display panel, display device and manufacturing method of display panel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1138510A (en) * | 1997-07-10 | 1999-02-12 | Samsung Electron Co Ltd | Projector screen |
| KR20060103924A (en) * | 2003-11-18 | 2006-10-04 | 머린 테크놀로지 리미티드 라이어빌리티 컴퍼니 | Variable optical arrays and variable manufacturing methods |
| US20080074740A1 (en) * | 2005-07-12 | 2008-03-27 | Bright View Technologies, Inc. | Front projection screens including reflective layer and an array of anamorphic microlenses |
| CN101526730A (en) * | 2008-03-05 | 2009-09-09 | 精工爱普生株式会社 | Screen, projection system and manufacturing method of screen |
-
2014
- 2014-12-24 CN CN201410819579.4A patent/CN104597707B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1138510A (en) * | 1997-07-10 | 1999-02-12 | Samsung Electron Co Ltd | Projector screen |
| KR20060103924A (en) * | 2003-11-18 | 2006-10-04 | 머린 테크놀로지 리미티드 라이어빌리티 컴퍼니 | Variable optical arrays and variable manufacturing methods |
| US20080074740A1 (en) * | 2005-07-12 | 2008-03-27 | Bright View Technologies, Inc. | Front projection screens including reflective layer and an array of anamorphic microlenses |
| CN101526730A (en) * | 2008-03-05 | 2009-09-09 | 精工爱普生株式会社 | Screen, projection system and manufacturing method of screen |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017193782A1 (en) * | 2016-05-12 | 2017-11-16 | 深圳市光峰光电技术有限公司 | Projection screen |
| CN107367897A (en) * | 2016-05-12 | 2017-11-21 | 深圳市光峰光电技术有限公司 | A kind of projection screen |
| CN107367897B (en) * | 2016-05-12 | 2019-05-03 | 深圳光峰科技股份有限公司 | A kind of projection screen |
| CN107632490A (en) * | 2016-07-19 | 2018-01-26 | 深圳市光峰光电技术有限公司 | A kind of reflective micro-structural, projection screen and optical projection system |
| CN107632490B (en) * | 2016-07-19 | 2020-10-16 | 深圳光峰科技股份有限公司 | Light reflection microstructure, projection screen and projection system |
| CN108563094A (en) * | 2018-05-04 | 2018-09-21 | 广州艾恩电子有限公司 | A kind of projection screen |
| CN109143765A (en) * | 2018-11-05 | 2019-01-04 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN109188847A (en) * | 2018-11-05 | 2019-01-11 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN111240138A (en) * | 2018-11-29 | 2020-06-05 | 宁波舜宇车载光学技术有限公司 | Optical projection system |
| CN112130236A (en) * | 2020-09-29 | 2020-12-25 | 厦门天马微电子有限公司 | Low-reflection structure, display panel, display device and manufacturing method of display panel |
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| Publication number | Publication date |
|---|---|
| CN104597707B (en) | 2016-09-14 |
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