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Projection screen and projection system

A projection screen and triangular technology, which is applied in the field of medium and long-focus optical projection, can solve the problems of poor anti-environmental light performance, low light energy utilization rate, and poor brightness uniformity, and achieve good anti-ambient light performance and high light energy utilization rate. , high contrast effect

Inactive Publication Date: 2020-03-27
CHENGDU FSCREEN SCI TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a projection screen and a projection system to improve the existing projection screen and system problems of poor uniformity of display brightness, low utilization of light energy, poor performance against ambient light, and low contrast

Method used

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  • Projection screen and projection system
  • Projection screen and projection system

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Embodiment Construction

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0039] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the a...

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Abstract

The invention provides a projection screen and a projection system, and relates to the technical field of medium and long focus optical projection. The projection screen is sequentially provided withan imaging element layer, an optical structure layer and a reflecting layer along the thickness direction; the cross section of the optical structure layer in the thickness direction is a plurality oftriangles which are arranged in rows; the optical structure layer is formed by sweeping a plurality of triangles along a plurality of arcs, one side of each triangle is arranged on the surface of theimaging element layer, and the angle, away from the imaging element layer, of each triangle ranges from 70 degrees to 110 degrees; the projection system comprises the projection screen and a projection device. By means of the arrangement, compared with diffuse reflection projection screens such as a white plastic screen, the projection screen has the advantages of being high in brightness, high in light energy utilization rate, low in energy consumption, high in graph definition, good in ambient light resistance and high in contrast ratio.

Description

technical field [0001] The present invention relates to the technical field of medium and telephoto optical projection, in particular to a projection screen and a projection system. Background technique [0002] With the continuous development of projection display technology, projection has been widely used as a simple and convenient display method. For example, in family entertainment or office needs, projection devices are basically moving toward small size, light weight, and low energy consumption. and other directions, and also require good image quality, high brightness, high contrast, and good anti-ambient light performance of projected images. And these requirements are unsatisfactory for the existing mid-telephoto front projection screens (such as white plastic screens). Since the white plastic screen itself can only diffusely reflect the light beam output by the projection device, it cannot effectively control the transmission direction of the light beam, and cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/56G03B21/60
CPCG03B21/56G03B21/60
Inventor 张益民王祖熊胡世加吴庆富
Owner CHENGDU FSCREEN SCI TECH
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