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Projection system and its screen

A technology of screens and mirror arrays, applied in optics, instruments, projection devices, etc., can solve problems such as affecting the imaging effect of projection systems

Inactive Publication Date: 2016-09-14
SHENZHEN ACTO DIGITAL VIDEO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it affects the imaging effect of the projection system

Method used

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  • Projection system and its screen

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Embodiment Construction

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...

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Abstract

A screen comprises a lens array and a reflector array which are oppositely arranged; the lens array comprises a plurality of lenses for collecting projection beams which enter the lens surfaces into parallel beams, and the parallel beams are projected on the reflector array; the reflector array comprises a plurality of reflectors consisting of incident surfaces and reflecting surfaces, wherein the incident surfaces face the lens array; the parallel beams transmitted from the incident surfaces are collected and projected on the reflecting surfaces, the reflecting surfaces reflect the collected beams, then the reflected beams sequentially pass through the incident surfaces of the reflectors and a transmitting mirror to form outgoing beams to be emitted out; the divergence angles of the outgoing beams are more than those of the projected beams. According to the screen, the divergence angles of the outgoing beams are increased, so that the divergence uniformity of the outgoing beams is improved, the brightness of the image viewed from each angle is soft and does not lead to dazzling. The invention further comprises a projection system.

Description

technical field [0001] The invention relates to a light and shadow imaging device, in particular to a projection system and a screen thereof. Background technique [0002] The projection system forms an image on the screen, the projection beam is projected onto the screen, the projection beam is diffusely reflected on the screen, and the diffusely reflected light enters the human eye, so that the viewer sees the projected image. Due to the diffuse reflection of the projected light beam in the imaging area, the light distribution reflected by the diffuse reflection is not uniform. The distribution of reflected light at the center of the imaging area is more, and the distribution of reflected light at the periphery of the imaging area is less. Therefore, viewers at different positions experience different brightness of the screen, with some viewing areas having stronger brightness and some viewing areas having weaker brightness. Therefore, the imaging effect of the projection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/602G03B21/56
CPCG03B21/56G03B21/602
Inventor 余艳金建培胡勇
Owner SHENZHEN ACTO DIGITAL VIDEO TECH
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