CN104597707B - Optical projection system and screen thereof - Google Patents
Optical projection system and screen thereof Download PDFInfo
- Publication number
- CN104597707B CN104597707B CN201410819579.4A CN201410819579A CN104597707B CN 104597707 B CN104597707 B CN 104597707B CN 201410819579 A CN201410819579 A CN 201410819579A CN 104597707 B CN104597707 B CN 104597707B
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- China
- Prior art keywords
- lens
- light beam
- screen
- plane
- array
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Classifications
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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 kind of screen includes lens arra and reflection mirror array.Lens arra is oppositely arranged with reflection mirror array.Lens arra includes multiple lens, and lens are for pooling collimated light beam by the projected light beam being incident in lens surface, and collimated light beam projects on reflection mirror array.Reflection mirror array includes multiple reflecting mirror, reflecting mirror includes the plane of incidence and reflecting surface, the plane of incidence is towards lens arra, it is accumulated and is projeced into from the collimated light beam of plane of incidence transmission reflecting surface, converging beam is also reflected back by reflecting surface, reflection light beam sequentially passes through the plane of incidence and the diaphotoscope of reflecting mirror, forms outgoing beam outgoing, and the angle of divergence of outgoing beam is more than the angle of divergence of projected light beam.The angle of divergence of outgoing beam increases so that outgoing beam dispersion is more uniformly distributed so that watching screen in all angles, the brightness of the image seen is the softest, will not be dazzling.Also provide for a kind of optical 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 occurs on screen
Diffuse-reflectance, irreflexive light enter human eye, beholder thus see projection picture.Owing to projected light beam exists
There is diffuse-reflectance, the light skewness that diffuse-reflectance reflects in imaging region, be positioned at imaging region central authorities
Reflection light distribution in position is more, is positioned at the reflection light distribution of imaging region peripheral position less.Therefore in
The beholder of diverse location, the screen intensity experienced is different, and the brightness in partially viewed region is relatively strong, portion
The brightness dividing viewing areas is more weak.Therefore, the imaging effect of optical projection system is affected.
Summary of the invention
Based on this, it is necessary to provide a kind of optical projection system that screen intensity can be made to be evenly distributed and screen thereof.
A kind of screen, including lens arra and reflection mirror array, described lens arra and described reflection mirror array
It is oppositely arranged；
Described lens arra includes multiple lens, and multiple described lens are array distribution, and described lens are used for will
The projected light beam being incident in described lens surface pools collimated light beam, described collimated light beam project described instead
Penetrate on lens array；
Described reflection mirror array includes multiple reflecting mirror, and multiple described reflecting mirrors are array distribution, described reflection
Mirror includes the plane of incidence and reflecting surface, the described plane of incidence towards described lens arra, parallel from plane of incidence transmission
Light beam is accumulated and is projeced on described reflecting surface, and described converging beam is also reflected back by described reflecting surface,
Described reflection light beam sequentially passes through the plane of incidence of described reflecting mirror and described diaphotoscope, forms outgoing beam outgoing,
The angle of divergence of described outgoing beam is more 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 include that transmission plane, described transmission plane are located at described lens and are leaned on
The side of nearly described reflection mirror array, 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 big
Radius of curvature in described transmission plane.
Wherein in an embodiment, the described plane of incidence is arc convex.
Wherein in an embodiment, also include that absorption panel, described absorption panel are located at described reflecting mirror battle array
Arranging the side away from described lens arra, described absorption panel is used for absorbing spuious light beam.
Wherein in an embodiment, described absorption panel is provided with suction near the surface of described reflection mirror array
Winder layer.
Wherein in an embodiment, also include glue-line, described glue-line be located at described lens arra with described instead
Penetrating between lens array, 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,
Described glue-line connects described reflection mirror array and described absorption panel.
A kind of optical projection system, including above-mentioned screen.
In optical projection system containing above-mentioned screen, projected light beam pools converging beam by lens arra, can
To strengthen the brightness of image imaging.Converging beam is again through reflection mirror array reflection, outgoing.Outgoing beam
The angle of divergence is more than the angle of divergence of projected light beam.The angle of divergence making outgoing beam increases so that outgoing beam divides
Dissipate and be more uniformly distributed so that watching screen in all angles, the brightness of the image seen is the softest, no
Can be dazzling, improve the imaging effect of optical projection system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the screen of present embodiment.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.
Accompanying drawing gives the better embodiment of the present invention.But, the present invention can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, provide the purpose of these embodiments to be
Make the disclosure is understood more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can be directly at another
On individual element or element placed in the middle can also be there is.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements.Used herein
Term " vertical ", " level ", "left", "right" and similar statement simply to illustrate that mesh
, being not offered as is unique embodiment.
Unless otherwise defined, all of technology used herein and scientific terminology and the technology belonging to the present invention
The implication that the technical staff in field is generally understood that is identical.The art used the most in the description of the invention
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting the present invention.Used herein
Term " and/or " include the arbitrary and all of combination of one or more relevant Listed Items.
Refer to Fig. 1, the screen 100 of present embodiment include lens arra 110, reflection mirror array 120 and
Absorption panel 130.Lens arra 110 is oppositely arranged with reflection mirror array 120.Absorption panel 130 is located at instead
Penetrate the lens array 120 side away from lens arra 110.
Lens arra 110 includes multiple lens 111.Multiple lens 111 are in array distribution.Lens 111 are used for
The projected light beam 20 being incident in lens 111 surface is pooled collimated light beam 21, and collimated light beam 21 projects
On reflection mirror array 120.
Lens 111 are convex lens.Lens 111 include transmission plane 112.Transmission plane 112 is located at lens 111 and is leaned on
The side of near reflex lens array 120, transmission plane 112 is arc convex.The side relative with transmission plane 112
For plane, it is ensured that screen 100 surface smooth, light is enable preferably to be incident in lens 111.
Projected light beam 20 with image information penetrates at the camera lens of optical projection system, and screen 100 is relative to mirror
Head often has a certain distance.Distance between screen 100 and camera lens is the most remote, incides screen 100
Projected light beam 20 more dissipates, and brightness is the least, then the brightness of screen 100 imaging is the lowest.Projected light beam
20 assemble through lens arra 110, the brightness of projected light beam 20 are concentrated.
Reflection mirror array 120 includes multiple reflecting mirror 121.Multiple reflecting mirror 121 is in array distribution.Reflecting mirror
121 include the plane of incidence 122 and reflecting surface 124.The plane of incidence 122 is towards lens arra 110.From the plane of incidence 122
The collimated light beam 21 of transmission is accumulated formation converging beam 23.Converging beam 23 projects on reflecting surface 124.
Converging beam 23 has convergence trend relative to directional light 21.Converging beam 23 can converge at reflecting mirror 121
Inside, it is also possible to converge at reflecting mirror 121 away from lens 111 side a little on.Reflecting surface 124
Converging beam 23 is reflected back formation reflection light beam 25.
Reflection light beam 25 converges in reflecting mirror 121, and reflection light beam 25 sequentially passes through entering of reflecting mirror 121
Penetrate face 122 and diaphotoscope 111, form outgoing beam 27 outgoing.Projected light beam 20 is assembled through lens 111
Becoming collimated light beam 21, this collimated light beam 21 reflects through the plane of incidence 122, converges on reflecting surface 124.Cause
This, the brightness of projected light beam 20 is concentrated further, it is ensured that projected light beam 20 is imaging on screen 100
Brightness.
Projected light beam 20 imaging on reflecting surface 124.
Converging beam 23 is reflected face 124 and reflects back formation reflection light beam 25.Reflection light beam 25 is reflected
Face 124 is converged.Reflection light beam 25 converges in screen 100 a bit.Through convergent point, reflect light beam 25
Dissipate, form outgoing beam 27 through lens arra 110 transmission.The angle of divergence of outgoing beam 27 is more than projection
The angle of divergence of 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.Tool
Body ground, the plane of incidence 122 is hemisphere face.Reflecting surface 124 is coated with reflectance coating.The radius of curvature of reflecting surface 124
More than the radius of curvature of the transmission plane 112 of lens 111, then ensure that reflection light beam 25 can converge at screen 100
Inside.The angle of divergence of the outgoing beam 27 then sent from this convergent point is more than the angle of divergence of projected light beam 20,
Making to watch screen 100 in all angles, the brightness of the image seen is the softest, will not be dazzling.
Further, incide on screen 100 with the environment light beam 30 of large angle incidence from environment, through lens
Array 110 and reflection mirror array 120, make environment light beam 30 can go out with wide-angle reflection.Therefore, ring
Border light beam 30 is after screen 100 reflects, owing to wide-angle outgoing, the environment light beam 30 being reflected is not
In the angular field of view of human eye, therefore, the human eye of beholder can't see environment light beam 30, therefore, screen 100
The environment light beam 30 impact on the brightness of screen 100 can be avoided.
Absorption panel 130 is used for absorbing spuious light beam.Incide the converging beam 23 on reflecting surface 24 or ring
Border light beam 30 there may be part light transmission reflecting surface 24 and forms veiling glare, and absorption panel 130 absorbs and passes through
The veiling glare of reflecting surface.Veiling glare strengthens the brightness of screen 100.After absorption panel 130 absorbs veiling glare,
Reduce the brightness of screen 100 background, thus improve the contrast of the become brightness of image of screen 100.
Absorption panel 130 can be glass or ground glass.Absorption panel 130 is near reflection mirror array 120
Surface be provided with absorbing membranous layer 131.Absorbing membranous layer 131 is black coating.
Screen 100 also includes glue-line 140.Glue-line 140 be located at lens arra 110 and reflection mirror array 120 it
Between, glue-line 140 connects lens arra 110 and reflection mirror array 120.Glue-line 140 is also located at reflection mirror array
Between 120 and absorption panel 130, 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 is the transparent liquid of 1.0 for refractive index
State glue.When light is from lens arra 110 outgoing, it is incident on reflection mirror array 120 through glue-line 140, thoroughly
The veiling glare crossing reflection mirror array 120 absorbs through absorption panel 130.The refractive index of glue-line 140 is 1.0, can
To reduce glue-line 140 to light propagation effect.
In above-mentioned screen 100, projected light beam 20 pools converging beam 23 by lens arra 110, can
To strengthen the brightness of image imaging.Converging beam 23 reflects through reflection mirror array 120 again, outgoing.Outgoing
The angle of divergence of light beam 27 is more than the angle of divergence of projected light beam 20.The angle of divergence making outgoing beam 27 increases,
Outgoing beam 27 dispersion is more uniformly distributed, then enters the intensity distributions of outgoing beam 27 of human eye the most more
Uniformly so that watching screen in all angles, the brightness of the image seen is the softest, will not be dazzling,
Improve the imaging effect of optical projection system.
Also provide for a kind of optical projection system.
The optical projection system of present embodiment includes above-mentioned screen 100.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more 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 this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (9)
1. a screen, it is characterised in that include lens arra and reflection mirror array, described lens arra with
Described reflection mirror array is oppositely arranged；
Described lens arra includes multiple lens, and multiple described lens are array distribution, and described lens are used for will
The projected light beam being incident in described lens surface pools collimated light beam, described collimated light beam project described instead
Penetrate on lens array；
Described reflection mirror array includes multiple reflecting mirror, and multiple described reflecting mirrors are array distribution, described reflection
Mirror includes the plane of incidence and reflecting surface, the described plane of incidence towards described lens arra, parallel from plane of incidence transmission
Light beam is accumulated and is projeced on described reflecting surface, and described converging beam is also reflected back by described reflecting surface,
Described reflection light beam sequentially passes through the plane of incidence of described reflecting mirror and described diaphotoscope, forms outgoing beam outgoing,
The angle of divergence of described outgoing beam is more than the angle of divergence of described projected light beam；
Described screen also includes that absorption panel, described absorption panel are located at described reflection mirror array away from described
The side of lens array, described absorption panel is used for absorbing spuious light beam.
Screen the most according to claim 1, it is characterised in that described lens are convex lens.
Screen the most according to claim 2, it is characterised in that described lens include transmission plane, described
Transmission plane is located at the described lens side near described reflection mirror array, and described transmission plane is arc convex.
Screen the most according to claim 3, it is characterised in that described reflecting surface is arc-shaped concave, institute
State the radius of curvature radius of curvature more than described transmission plane of reflecting surface.
Screen the most according to claim 1, it is characterised in that the described plane of incidence is arc convex.
Screen the most according to claim 1, it is characterised in that described absorption panel is near described reflection
The surface of lens array is provided with absorbing membranous layer.
Screen the most according to claim 6, it is characterised in that also include that glue-line, described glue-line are located at
Between described lens arra and described reflection mirror array, described glue-line connects described lens arra and described reflection
Lens array.
Screen the most according to claim 7, it is characterised in that described glue-line is located at described reflecting mirror battle array
Between row and described absorption panel, described glue-line connects described reflection mirror array and described absorption panel.
9. an optical projection system, it is characterised in that include the screen described in claim 1～8 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 CN104597707A (en) | 2015-05-06 |
| CN104597707B true 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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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108563094B (en) * | 2018-05-04 | 2024-08-02 | 广州艾恩电子有限公司 | Projection screen |
| 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 |
| 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 |
| 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 |
| CN112130236B (en) * | 2020-09-29 | 2022-09-16 | 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100238300B1 (en) * | 1997-07-10 | 2000-01-15 | 윤종용 | Projector screen |
| KR100930145B1 (en) * | 2003-11-18 | 2009-12-07 | 머린 테크놀로지 리미티드 라이어빌리티 컴퍼니 | Variable optical array and its manufacturing method |
| US7324276B2 (en) * | 2005-07-12 | 2008-01-29 | Bright View Technologies, Inc. | Front projection screens including reflecting and refractive layers of differing spatial frequencies |
-
2014
- 2014-12-24 CN CN201410819579.4A patent/CN104597707B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN104597707A (en) | 2015-05-06 |
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