CN201876559U - Curved pyramid-shaped microlens array and rear projection screen with same - Google Patents
Curved pyramid-shaped microlens array and rear projection screen with same Download PDFInfo
- Publication number
- CN201876559U CN201876559U CN2010206346049U CN201020634604U CN201876559U CN 201876559 U CN201876559 U CN 201876559U CN 2010206346049 U CN2010206346049 U CN 2010206346049U CN 201020634604 U CN201020634604 U CN 201020634604U CN 201876559 U CN201876559 U CN 201876559U
- Authority
- CN
- China
- Prior art keywords
- curved surface
- pyramid
- microlens array
- lenticule unit
- surface pyramid
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
The utility model relates to a rear-projection optical screen, in particular to a curved pyramid-shaped microlens array used for the rear projection screen and the rear projection screen with same. The curved pyramid-shaped microlens array is endowed with an array structure consisting of a plurality of curved pyramid-shaped microlens units, and each curved pyramid-shaped microlens unit is provided with a bottom surface, a top surface and four side surfaces connected with the bottom surface and the top surface; the bottom surface of the curved pyramid-shaped microlens unit is square, the top surface is spherical, and the side surfaces are cambered; the rear-projection screen comprises a Fresnel screen, the curved pyramid-shaped microlens array and a scattering layer provided with fine matte surfaces, wherein the curved pyramid-shaped microlens array is endowed with the array structure consisting of the plurality of curved pyramid-shaped microlens units, the bottom surfaces of the curved pyramid-shaped microlens units are connected with the Fresnel screen, the top surfaces are connected with the scattering layer provided with fine matte surfaces, and the space between every two adjacent curved pyramid-shaped microlens units is coated with a black coating. The curved pyramid-shaped microlens array and the rear projection screen with same have the advantages of high transmissivity and resolution, dazzle resistance and large viewing angle.
Description
Technical field
The utility model relates to the rear-projection optical screen, the curved surface pyramid microlens array that specifically a kind of rear projection screen uses and have the rear projection screen of this lens arra.
Background technology
The rear-projection optical screen is widely used in occasions such as large conference room, command and control center, training education, video conference, the displaying Room, exhibition center, auditorium, gymnasium, music hall, supermarket, airport, station, harbour, cafeteria, show window at present, even the strong complex environment of various surround lightings, this just has higher requirement to optical screen.
Optical screen is meant the projection screen that contains one or more optical lens systems, and rear projection screen normally is made up of Fresnel Lenses and diffuse reflection screen.The light of ray machine outgoing becomes directional light after shielding through Fresnel, shields light scatter through diffuse reflection, thereby reaches the purpose that big visual field is watched.Now, main on the market diffuse reflection screen mostly is simple diffuse reflection screen, cylindrical mirror shields and the form of beaded screen.
Simple diffuse reflection screen mainly is directly the acrylic surface to be handled to be made.Fresnel Lenses is with after simple diffuse reflection screen cooperates, and will produce very serious glare phenomenon from the parasitic light of Fresnel Lenses outgoing.
The cylindrical lens component structure of cylindrical mirror screen as shown in Figure 1, incident light passes through the column convex lens focus of the plane of incidence near the column convex lens of exit facet, the zone line of adjacent column convex lens forms bossing on exit facet, at bossing printing black streaking 1, can guarantee that like this exit facet one side has the blacking of maximum area, thereby improve contrast.But because cylindrical mirror can only be with the divergence of beam of horizontal direction, and the light ray propagation direction of vertical direction is constant, and this has just caused the cylindrical mirror screen very little in the angle of divergence of vertical direction, can not be applied in the omnibearing occasion of watching of wide-angle.
The structure of beaded screen is used tiny bead 4 as shown in Figure 2 between Fresnel screen 2 and diffuse reflection screen 3, and at the side spraying last layer black coating 5 of bead 4 towards the beholder.Bead 4 can shield Fresnel the 2 refraction directional lights of coming to be dispersed, and is sent to the beholder.The surround lighting that impinges upon on the screen is then directly sponged by black coating 5.But because the part between the bead has black coating 5, this will cause at least 21.5% optical energy loss, as shown in Figure 3, so there is certain defective in beaded screen aspect light-use.
The utility model content
In order to solve the problems referred to above that existing diffuse reflection screen exists, the rear projection screen that the purpose of this utility model is to provide a kind of curved surface pyramid microlens array and has this lens arra.
The purpose of this utility model is achieved through the following technical solutions:
Curved surface pyramid microlens array of the present utility model is formed array structure by a plurality of curved surface pyramid lenticules unit, and each curved surface pyramid lenticule unit has bottom surface, end face and connects four sides of bottom surface and end face; The bottom surface of described curved surface pyramid lenticule unit is a square, and end face is a sphere, and the side is a cambered surface.
Wherein: the outside surface of four sides of described curved surface pyramid lenticule unit is coated with total reflection film; The outside surface of the end face of curved surface pyramid lenticule unit is coated with anti-reflection film; The radius-of-curvature of side, curved surface pyramid lenticule unit is greater than 0.04mm, and the angle between the two relative side is less than 60 °; The radius-of-curvature of curved surface pyramid lenticule unit end face is greater than 0.01mm; The length of side of bottom surface, curved surface pyramid lenticule unit is 0.05mm～0.5mm.
The utility model has the rear projection screen of curved surface pyramid microlens array, comprise Fresnel screen, curved surface pyramid microlens array and with the scattering layer of meticulous hair side, its mean camber prismatic microlens array is formed array structure by a plurality of curved surface pyramid lenticules unit, the bottom surface of curved surface pyramid lenticule unit links to each other with the Fresnel screen, end face links to each other with scattering layer with meticulous hair side, scribbles black coating between adjacent curved surface pyramid lenticule unit.
Wherein: described black coating is coated in the outside surface of side, curved surface pyramid lenticule unit total reflection film.
Advantage of the present utility model and good effect are:
1. curved surface pyramid microlens array of the present utility model utilizes light in the side of curved surface pyramid lenticule unit total reflection to take place, and penetrate from end face, can guarantee the scattering of light all angles, cylindrical mirror has the blind area in vertical direction phenomenon can not occur; Angle angle between the relative two sides, curved surface pyramid lenticule unit has guaranteed that parasitic light can outgoing, has reached the effect of anti-dazzle from face.
2. 7 bottom surfaces, curved surface pyramid lenticule unit are square, can make microlens structure compact more, have avoided optical energy loss, the optical energy loss problem of bead array can not occur.
3. the utility model is with curved surface pyramid microlens array and Fresnel Lenses combination, be formed for LCD, LCOS, DLP is the rear projection screen of the high definition projection TV of projection source, has the advantage of high permeability, high-contrast, high resolving power, anti-dazzle, big field angle.
The utility model in the side of each curved surface pyramid lenticule unit not luminous component scribble black coating, surround lighting can be absorbed, thereby improve the contrast of screen.
Description of drawings
Fig. 1 is the structural representation of existing cylindrical lens component rear projection screen;
Fig. 2 is the structural representation of existing beaded screen;
Fig. 3 is the sectional view of existing beaded screen;
Fig. 4 is the perspective view of the utility model curved surface pyramid microlens array;
Fig. 5 is the structural representation of Fig. 4 mean camber pyramid lenticule unit;
Fig. 6 has the structure cut-open view of the rear projection screen of curved surface pyramid microlens array for the utility model;
Wherein: 1 is black streaking, and 2 are the Fresnel screen, and 3 are the diffuse reflection screen, and 4 is bead, and 5 is black coating, and 6 is curved surface pyramid microlens array, and 7 is curved surface pyramid lenticule unit, and 8 are the scattering layer with meticulous hair side, and 9 is anti-reflection film, and 10 is total reflection film.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As Fig. 4, shown in Figure 5, curved surface pyramid microlens array 6 of the present utility model is formed the line number array structure identical with columns by the identical curved surface pyramid lenticule unit 7 of a plurality of structures,
Each curved surface pyramid lenticule unit 7 is whole for taper, all have bottom surface, an end face and connect four sides of bottom surface and end face; The bottom surface of curved surface pyramid lenticule unit 7 is a square, and end face is a sphere, and the side is the cambered surface with certain curvature.The situation of dispersing of the emergent ray by curved surface pyramid lenticule unit 7 is relevant with the radius of curvature R 1 of the radius of curvature R 2 of curved surface pyramid side angle (being the angle between the two relative side) α, side and end face, the α angle can influence the uniformity coefficient of emergent light, what R1 and R2 can influence emergent light disperses the uniformity coefficient and the angle of divergence, the size of the length of side L decision lenticule unit of 7 bottom surfaces, curved surface pyramid lenticule unit, thereby the resolution of decision screen.The radius of curvature R 2 of 7 sides, the utility model curved surface pyramid lenticule unit is greater than 0.04mm, and the angle α between the two relative side is less than 60 °; The radius of curvature R 1 of curved surface pyramid lenticule unit 7 end faces is greater than 0.01mm; The length of side L of 7 bottom surfaces, curved surface pyramid lenticule unit is 0.05mm～0.5mm.Outside surface in four sides of curved surface pyramid lenticule unit 7 is coated with total reflection film 10, and the outside surface of the end face of curved surface pyramid lenticule unit 7 is coated with anti-reflection film 9.Light incides the inside of curved surface pyramid lenticule unit 7 from the bottom surface, the inside surface four sides carries out total reflection, at last from the sphere outgoing of end face; Foursquare bottom surface can make the microlens structure compactness, has avoided optical energy loss.
As shown in Figure 6, the rear projection screen that has curved surface pyramid microlens array, comprise Fresnel screen 2, curved surface pyramid microlens array 6 and with the scattering layer 8 of meticulous hair side, its mean camber prismatic microlens array 6 is formed array structure by a plurality of curved surface pyramid lenticules unit 7, the bottom surface of curved surface pyramid lenticule unit 7 links to each other with Fresnel screen 2, end face links to each other with scattering layer 8 with meticulous hair side, between adjacent curved surface pyramid lenticule unit 7, scribble black coating 5, this black coating 5 is coated in the outside surface (be 7 sides, curved surface pyramid lenticule unit not luminous component scribble black coating 5) of curved surface pyramid lenticule unit 7 side total reflection films 10, black coating can absorb surround lighting, thereby has improved the contrast of screen; The black coating of present embodiment adopts conventional material (as carbon element prepared Chinese ink or bonderite).In Fig. 6, curved surface pyramid lenticule beam projecting face is defined as the top, therefore, in the back projection process, light is by downward outgoing down; From the light of projection lens outgoing, through becoming directional light behind the Fresnel mirror 2, after the reflection of parallel rays through the side total reflection film 10 of curved surface pyramid lenticule unit 7, from the sphere outgoing of end face and disperse.If parasitic light goes into to inject curved surface pyramid lenticule unit 7 from the bottom surface, through after the reflection of side, lenticule unit, will be reflected back toward the bottom surface and can not outgoing, thereby suppress parasitic light, played the effect of anti-dazzle.
Total reflection film and anti-reflection film on the utility model curved surface pyramid lenticule unit 7 are prior art.Curved surface pyramid microlens array 6 of the present utility model can be the individual layer screen that links together with Fresnel screen 2, also can be double-deck screen separately; Present embodiment is curved surface pyramid microlens array 6 and the Fresnel screen 2 individual layer screens that link together.
The above for the person of ordinary skill of the art, can make various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to protection domain of the present utility model.
Claims (8)
1. curved surface pyramid microlens array is characterized in that: form array structure by a plurality of curved surface pyramid lenticule unit (7), each curved surface pyramid lenticule unit (7) has bottom surface, end face and connects four sides of bottom surface and end face; The bottom surface of described curved surface pyramid lenticule unit (7) is a square, and end face is a sphere, and the side is a cambered surface.
2. by the described curved surface pyramid of claim 1 microlens array, it is characterized in that: the outside surface of four sides of described curved surface pyramid lenticule unit (7) is coated with total reflection film (10).
3. by the described curved surface pyramid of claim 1 microlens array, it is characterized in that: the outside surface of the end face of described curved surface pyramid lenticule unit (7) is coated with anti-reflection film (9).
4. by the described curved surface pyramid of claim 1 microlens array, it is characterized in that: the radius-of-curvature of side, described curved surface pyramid lenticule unit (7) is greater than 0.04mm, and the angle between the two relative side is less than 60 °.
5. by the described curved surface pyramid of claim 1 microlens array, it is characterized in that: the radius-of-curvature of described curved surface pyramid lenticule unit (7) end face is greater than 0.01mm.
6. by the described curved surface pyramid of claim 1 microlens array, it is characterized in that: the length of side of bottom surface, described curved surface pyramid lenticule unit (7) is 0.05mm～0.5mm.
7. rear projection screen that has by the described curved surface pyramid of the arbitrary claim of claim 1 to 6 microlens array, it is characterized in that: comprise Fresnel screen (2), curved surface pyramid microlens array (6) and with the scattering layer (8) of meticulous hair side, its mean camber prismatic microlens array (6) is formed array structure by a plurality of curved surface pyramid lenticule unit (7), the bottom surface of curved surface pyramid lenticule unit (7) links to each other with Fresnel screen (2), end face links to each other with scattering layer (8) with meticulous hair side, scribbles black coating (5) between adjacent curved surface pyramid lenticule unit (7).
8. by the described rear projection screen that has curved surface pyramid microlens array of claim 7, it is characterized in that: described black coating (5) is coated in the outside surface of curved surface pyramid lenticule unit (7) side total reflection film (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206346049U CN201876559U (en) | 2010-11-30 | 2010-11-30 | Curved pyramid-shaped microlens array and rear projection screen with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206346049U CN201876559U (en) | 2010-11-30 | 2010-11-30 | Curved pyramid-shaped microlens array and rear projection screen with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876559U true CN201876559U (en) | 2011-06-22 |
Family
ID=44164475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206346049U Expired - Lifetime CN201876559U (en) | 2010-11-30 | 2010-11-30 | Curved pyramid-shaped microlens array and rear projection screen with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876559U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478675A (en) * | 2010-11-30 | 2012-05-30 | 沈阳新松机器人自动化股份有限公司 | Curved-surface pyramidal micro-lens array and rear projection screen with the lens array |
| CN104298062A (en) * | 2014-09-19 | 2015-01-21 | 杨作林 | Projection screen, manufacturing method of projection screen and method for controlling light rays by means of projection screen |
| CN106842799A (en) * | 2016-12-27 | 2017-06-13 | 海信集团有限公司 | A kind of rear projection screen and optical projection system |
| CN107020784A (en) * | 2017-05-26 | 2017-08-08 | 云南电网有限责任公司电力科学研究院 | A kind of perspective film and glasses for improving X ray image resolution |
| CN110441841A (en) * | 2019-08-29 | 2019-11-12 | 苏州莱科光学科技有限公司 | A kind of peep-proof film can be used for curve screens |
| CN111929945A (en) * | 2019-05-13 | 2020-11-13 | 合肥京东方光电科技有限公司 | Collimating device, optical film, backlight module and display device |
-
2010
- 2010-11-30 CN CN2010206346049U patent/CN201876559U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478675A (en) * | 2010-11-30 | 2012-05-30 | 沈阳新松机器人自动化股份有限公司 | Curved-surface pyramidal micro-lens array and rear projection screen with the lens array |
| CN104298062A (en) * | 2014-09-19 | 2015-01-21 | 杨作林 | Projection screen, manufacturing method of projection screen and method for controlling light rays by means of projection screen |
| CN104298062B (en) * | 2014-09-19 | 2016-04-27 | 杨作林 | Projection screen, and preparation method thereof and control the method for light with this projection screen |
| CN106842799A (en) * | 2016-12-27 | 2017-06-13 | 海信集团有限公司 | A kind of rear projection screen and optical projection system |
| CN107020784A (en) * | 2017-05-26 | 2017-08-08 | 云南电网有限责任公司电力科学研究院 | A kind of perspective film and glasses for improving X ray image resolution |
| CN107020784B (en) * | 2017-05-26 | 2019-11-05 | 云南电网有限责任公司电力科学研究院 | A kind of perspective film and glasses improving X ray image resolution |
| CN111929945A (en) * | 2019-05-13 | 2020-11-13 | 合肥京东方光电科技有限公司 | Collimating device, optical film, backlight module and display device |
| US11385396B2 (en) | 2019-05-13 | 2022-07-12 | Hefei Boe Optoelectronics Technology Co., Ltd. | Collimating device, optical film, backlight module and display apparatus |
| CN110441841A (en) * | 2019-08-29 | 2019-11-12 | 苏州莱科光学科技有限公司 | A kind of peep-proof film can be used for curve screens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201876559U (en) | Curved pyramid-shaped microlens array and rear projection screen with same | |
| CN207216263U (en) | It is totally reflected screen and optical projection system | |
| CN109388015B (en) | Total reflection screen and projection system | |
| US11448952B2 (en) | Screen and projection system | |
| US7974005B2 (en) | Display screen for use in front projectors | |
| CN110297386B (en) | Curved screen, microstructure setting method thereof and projection system | |
| CN210894983U (en) | Anti-light screen structure based on linear Fresnel lens | |
| CN109388013A (en) | Projection screen and optical projection system | |
| CN110554557B (en) | Projection screen and projection system | |
| CN106842800A (en) | A kind of ultrashort burnt anti-light projection screen | |
| WO2019179124A1 (en) | Screen and projection system | |
| CN102478675A (en) | Curved-surface pyramidal micro-lens array and rear projection screen with the lens array | |
| US11762275B2 (en) | Projection screen and projection system | |
| CN103995420B (en) | Photoimaging systems and there is the projection imaging system of this photoimaging systems | |
| CN110361921B (en) | Screen and projection system | |
| CN109388014B (en) | Projection screen and projection system | |
| CN203465514U (en) | Environmental light resistance projection screen and billboard | |
| KR20140064446A (en) | Reflection type screen for front projection display apparatus | |
| CN203164590U (en) | High-definition wide-angle projection film | |
| KR102186241B1 (en) | Reflecting screen | |
| CN203455582U (en) | Optical rear projection hard curtain | |
| CN203930303U (en) | Photoimaging system and there is the projection imaging system of this photoimaging system | |
| CN208956198U (en) | The display screen of three primary colors laser television and three primary colors laser television | |
| CN210777651U (en) | Interactive microspur rear projection LED display screen for seamless eye protection | |
| CN201654437U (en) | Rear projection screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 315048 Zhejiang city of Ningbo province high tech Zone Juxian Road No. 555 2 floor Patentee after: Ningbo SIASUN Robot Technology Co., Ltd. Address before: 311228, No. 247, farm house second, Xiaoshan Linjiang Industrial Zone, Xiaoshan District, Zhejiang, Hangzhou Patentee before: Hangzhou Zhongke Siasun Optoelectronics Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |