Projection screen and projection system

A technology of projection screen and imaging element, applied in the field of mid-telephoto optical projection, can solve the problems of low brightness of projection screen and system, poor anti-ambient light performance, unclear image, etc., and achieve clear image display and good anti-ambient light performance. , the effect of high image definition

Inactive Publication Date: 2020-03-27
CHENGDU FSCREEN SCI TECH
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  • Abstract
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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 low brightness, low contrast, unclear images, and poor performance against ambient light

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

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Embodiment Construction

[0034] 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.

[0035] 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 comprises an imaging element layer, an optical structure layer and a reflecting layer which are sequentially arranged in the thickness direction. The optical structure layer is composed of a plurality of rows of triangular prism structures which are arranged in a row, the cross section of the optical structure layer in the thickness direction is a plurality of rows of triangles which are arranged in a row, one side of each triangle is arranged on the surface of the imaging 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. Through the arrangement, compared with diffuse reflection projection screens such as a white plastic screen and the like, the projection screen has the advantages of high brightness, high light energy utilization rate, low energy consumption, high graphic definition, good ambient light resistance and high contrast ratio, solves the problems of lowbrightness, low contrast ratio, unclear images and poor ambient light resistance of a traditional medium-long-focus projection system, and obtains an excellent projection display effect.

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 projection image quality, high brightness, high contrast. 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 cannot control the transmission of ambient light, so the li...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/602G03B21/60
CPCG03B21/60G03B21/602
Inventor 张益民王祖熊胡世加吴庆富
Owner CHENGDU FSCREEN SCI TECH
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