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Projection screen and system and manufacture method of projection screen

A technology of a projection screen and a manufacturing method, which is applied to the projection system and the manufacture of the projection screen, and the field of reflective projection screen, can solve the problems of limited effect, easy falling off of glass powder, affecting the use effect, etc., and achieves high contrast and bright colors. Effect

Inactive Publication Date: 2011-11-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass bead projection screen is made by spraying tiny glass powder on the surface of the textile. This kind of screen can increase the contrast, but its effect is limited and it should not be rolled up repeatedly, otherwise the glass powder will easily fall off and affect the use effect.

Method used

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  • Projection screen and system and manufacture method of projection screen
  • Projection screen and system and manufacture method of projection screen
  • Projection screen and system and manufacture method of projection screen

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Embodiment Construction

[0022] see figure 1 and figure 2 , the projection system 40 provided by the embodiment of the present invention includes a projection screen 10 and a projection light source 30 . The projection screen 10 displays images by reflecting light in three bands of red (R), green (G), and blue (B). The projection light source 30 is located in a projector (not shown), which can emit the light of the three wavelength bands.

[0023] The projection screen 10 includes a substrate 12 and a selectively reflective layer 14 . The substrate 12 has a light transmittance greater than 80% and is flexible. The substrate 12 can be made of polyvinylbutyral (PVB resin), which has high light transmittance and good flexibility.

[0024] The substrate 12 has opposite first surface 121 and second surface 122 , and the first surface 121 is close to the projection light source 30 . The selective reflection layer 14 is disposed on the second surface 122 and is a back reflection film. The selective ref...

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Abstract

The invention provides a projection screen, which is used for displaying images by reflecting light rays in three wave bands of red, green and blue. The projection screen comprises a flexible substrate with the light transmittance more than 80% and a selective reflection layer, wherein the substrate is provided with a first surface and a second surface opposite to the first surface, the selective reflection layer is formed on the second surface, the light rays of the three wave bands are transmitted to the selective reflection layer through the substrate, the selective reflection layer has a reflection characteristic to the light rays in the three wave bands and has an absorption characteristic to the light rays in the wave bands except for the three wave bands. The invention further provides a projection system with adoption of the projection screen and a manufacturing method of the projection screen.

Description

technical field [0001] The present invention relates to a projection screen, a projection system and a method for manufacturing the projection screen, in particular to a reflective projection screen, a projection system and a method for manufacturing the projection screen Background technique [0002] Handheld projection systems and projectors have been widely used in meetings, advertisements, education and entertainment, etc. The performance of the projection screen plays a key role in the image quality. Projection screens for displaying projected images can be classified into transmissive projection screens and reflective projection screens according to display principles. A transmissive projection screen passes a projection screen that transmits a light image emitted from a projector behind it, and a reflective projection screen passes a projection screen that reflects a light image emitted by a projector in front of it. [0003] Reflective projection screens can be divi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/60
Inventor 魏朝沧陈杰良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD