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Title:
EDGE-BLENDING SEAMLESS-SPLICING DISPLAY SYSTEM, FRESNEL LENS AND METHOD FOR SIMULATING LONG-FOCUS PROJECTOR BY MEANS OF SHORT-FOCUS PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2018/107782
Kind Code:
A1
Abstract:
Disclosed is an edge-blending seamless-splicing display system, relating to the field of rear-projection splicing display walls. The system comprises: a screen for projecting images; at least two projectors arranged at a rear side of the screen in parallel and used for projecting the images onto the screen; and a Fresnel lens arranged between the projectors and the screen, wherein images of the projectors are projected onto the screen by means of the Fresnel lens, and blend and overlap with a picture of an adjacent projector on the edge of the picture; the distance between the projectors and the screen is as shown in formula (I); and the distance between the Fresnel lens and the screen is as shown in formula (II). Projectors with short-focus lenses can be used for edge blending splicing, such that the projection distance and the system thickness are reduced, and a screen with a relatively small half-gain viewing angle, high gain and high contrast can be selected, thereby widening the selection range of the screen and improving the overall display effect of a system.

Inventors:
LUO, Zhenhua (No.233 Kezhu Road, GuangzhouHigh-Tech Industrial Development Zon, Guangzhou Guangdong 0, 510670, CN)
Application Number:
CN2017/096495
Publication Date:
June 21, 2018
Filing Date:
August 08, 2017
Export Citation:
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Assignee:
VTRON GROUP CO., LTD. (No.233 Kezhu Road, GuangzhouHigh-Tech Industrial Development Zon, Guangzhou Guangdong 0, 510670, CN)
International Classes:
G03B21/14; G02B3/08; G03B37/04; H04N9/31
Foreign References:
CN106527024A2017-03-22
CN1688160A2005-10-26
CN101334529A2008-12-31
US20090213337A12009-08-27
CN2824079Y2006-10-04
US7699472B22010-04-20
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (Room 3901, No.85 Huacheng Avenue Tianhe Distric, Guangzhou Guangdong 3, 510623, CN)
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