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1. WO2020063706 - PROJECTION SCREEN AND PROJECTION SYSTEM

Publication Number WO/2020/063706
Publication Date 02.04.2020
International Application No. PCT/CN2019/107998
International Filing Date 26.09.2019
IPC
G03B 21/56 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
54Accessories
56Projection screens
CPC
G03B 21/56
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
54Accessories
56Projection screens
G03B 21/60
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
54Accessories
56Projection screens
60characterised by the nature of the surface
Applicants
  • 深圳光峰科技股份有限公司 APPOTRONICS CORPORATION LIMITED [CN]/[CN]
Inventors
  • 王杰 WANG, Jie
  • 孙微 SUN, Wei
  • 王霖 WANG, Lin
  • 胡飞 HU, Fei
  • 李屹 LI, Yi
Priority Data
201811153138.X30.09.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PROJECTION SCREEN AND PROJECTION SYSTEM
(FR) ÉCRAN DE PROJECTION ET SYSTÈME DE PROJECTION
(ZH) 一种投影幕及投影系统
Abstract
(EN)
A projection screen, comprising a substrate (10), a functional layer (20) and a light absorbing layer (30) for absorbing light, with same being sequentially arranged from a light incident side, wherein the functional layer (20) includes a plurality of microstructures (201) connected to a surface of the light absorbing layer (30), the microstructures (201) being circular table bodies, and the plurality of microstructures (201) being used to reflect incident projection light. Since a horizontal plane of the functional layer (20) is in contact with the light absorbing layer (30), ambient light incident on the horizontal plane is absorbed by the light absorbing layer (30); and ambient light incident on an inclined plane of the microstructures (201) of the functional layer (20) is also absorbed by the light absorption layer (30) after being reflected to the horizontal plane. The projection screen can absorb ambient light to the greatest possible extent so as to obtain a high-contrast image.
(FR)
La présente invention concerne un écran de projection comprenant un substrat (10), une couche fonctionnelle (20) et une couche d'absorption de lumière (30) permettant d'absorber la lumière, celles-ci étant disposées les unes à la suite des autres à partir d'une face d'incidence de lumière, la couche fonctionnelle (20) comprenant une pluralité de microstructures (201) raccordées à une surface de la couche d'absorption de lumière (30), les microstructures (201) étant des corps de table circulaires, et la pluralité de microstructures (201) servant à réfléchir la lumière de projection incidente. Puisqu'un plan horizontal de la couche fonctionnelle (20) est en contact avec la couche d'absorption de lumière (30), la lumière ambiante incidente sur le plan horizontal est absorbée par la couche d'absorption de lumière (30) ; et la lumière ambiante incidente sur un plan incliné des microstructures (201) de la couche fonctionnelle (20) est également absorbée par la couche d'absorption de lumière (30) après avoir été réfléchie sur le plan horizontal. L'écran de projection peut absorber la lumière ambiante dans la plus grande mesure possible de manière à obtenir une image à fort contraste.
(ZH)
一种投影幕,其包括从光入射侧依次设置的基板(10)、功能层(20)和用于吸收光线的吸光层(30);其中,功能层(20)包含多个与吸光层(30)表面连接的微结构(201),微结构(201)为圆台体,多个微结构(201)用于对入射的投影光线进行反射。由于功能层(20)的水平面与吸光层(30)接触,入射在水平面上的环境光线被吸光层(30)吸收,而入射在功能层(20)微结构(201)倾斜面上的环境光线也在被反射向水平面后被吸光层(30)吸收,投影屏幕能够尽可能的对环境光线进行吸收,从而获得高对比度图像。
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