Title:
NEW PROJECTION SCREEN
Document Type and Number:
WIPO Patent Application WO/2019/062433
Kind Code:
A1
Abstract:
Disclosed is a new projection screen, comprising a transparent substrate layer (10) and a transparent grating structure layer (20), wherein a surface of one side of the transparent grating structure layer (20) is bonded with the transparent substrate layer (10), and a surface of the other side, opposite the transparent substrate layer (10), of the transparent grating structure layer (20) is provided with several micro-grooves (21), which are distributed at equal intervals; the micro-grooves (21) are filled with a light-coloured imaging material (30); and the side, provided with the imaging material (30), of the transparent grating structure layer (20) is combined with a dark ink layer (40). During projection, the dark ink layer absorbs ambient light, so that the projection contrast can be increased to ensure the display effect of projected pictures. The projection screen can also be used as an electronic blackboard and as a holographic projection screen, has very high transparency, and can ensure the imaging effects of holographic projection.
Inventors:
YANG DAHAI (CN)
Application Number:
PCT/CN2018/102803
Publication Date:
April 04, 2019
Filing Date:
August 28, 2018
Export Citation:
Assignee:
SHENZHEN TRUE SCREEN TECH DEVELOPMENT CO LTD (CN)
International Classes:
G03B21/60
Foreign References:
| CN108345167A | 2018-07-31 | |||
| CN107703711A | 2018-02-16 | |||
| JP2014115581A | 2014-06-26 | |||
| JP2013156287A | 2013-08-15 | |||
| JP2007256307A | 2007-10-04 |
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