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Black projection screen

A projection screen, black technology, applied in the field of black projection screen, can solve the problems of affecting image projection effect, limiting the use range of projection equipment, reducing contrast and color reproduction, etc., to expand the use range, improve contrast and color reproduction. Effect

Active Publication Date: 2014-06-25
福建福思科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the influence of stray light formed by the reflection of ambient light on the black projection screen, the contrast and color reproduction of the projection light imaging on the existing black projection screen are greatly reduced, which affects the image projection effect, making it especially difficult for ambient light Projection projectors, projection movie machines, and projection TVs with high requirements can only be used under weak ambient light conditions, which limits the scope of use of these projection equipment

Method used

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Embodiment Construction

[0015] See figure 1 , figure 1 It is a structural schematic diagram of the first embodiment of the black projection screen of the present invention. Such as figure 1 As shown, the black projection screen 10 of this embodiment includes an optical film 11 and a black light-absorbing layer 12 . The optical film 11 has opposite first and second surfaces, wherein the first surface faces the incident direction of the projected light. The optical film 11 is used to reflect light in the primary wavelength range and transmit light in other wavelength ranges in the projected light, and the optical film 11 is formed of different multi-layer reflective films. The black light-absorbing layer 12 is disposed on the second surface of the optical film 11 , and the black light-absorbing layer 12 is used for absorbing incident light thereon.

[0016] In the first embodiment of the present invention, the multi-layer reflective films may be attached to each other, or may be sequentially plated...

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Abstract

Disclosed is a black projection screen (10). The black projection screen (10) comprises: an optical film (11) having a first surface and a second surface opposite to each other for reflecting the light in the range of the primary light wavelengths in the projected light and transmitting the light in other wavelength ranges; a black light-absorbing layer (12), the black light-absorbing layer (12) being disposed on the second surface, for absorbing the incident light thereon; wherein the optical film (11) is formed of multiple layers of reflection films different from one another; by disposing a black light-absorbing layer (12) on the optical film (11), the light in the range of the primary light wavelengths in the projected light which is incident on the black projection screen (10) is almost totally reflected, while most of the natural light incident on the black projection screen (10) is absorbed, which can effectively increase the image contrast ratio and color reducibility of the black projection screen (10).

Description

technical field [0001] The invention relates to the technical field of projection display, in particular to a black projection screen. Background technique [0002] Due to the influence of stray light formed by the reflection of ambient light on the black projection screen, the contrast and color reproduction of the projection light imaging on the existing black projection screen are greatly reduced, which affects the image projection effect, making it especially difficult for ambient light Projection projectors, projection movie machines, and projection televisions with high requirements can usually only be used under weak ambient light conditions, which limits the range of use of these projection devices. [0003] Therefore, it is necessary to provide a black projection screen to solve the above technical problems. Contents of the invention [0004] The present invention provides a black projection screen, wherein the black projection screen can make the light in the wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/60
CPCG03B21/60
Inventor 刘美鸿
Owner 福建福思科技有限公司