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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10444478 B1

PDFFull Text
Date of Patent:
Oct. 15, 2019

Filed:

Mar. 27, 2018

Ultra-short throw projection optical system

Applicant:

Union Optech Co., Ltd., Zhongshan, Guangdong, CN;

Inventor:

Junqiang Gong, Guangdong, CN;

Assignee:

UNION OPTECH CO., LTD., Zhongshan, CN;

Attorney:
Primary Examiner:

William Choi

Int. Cl.
CPC ...
G02B 9/00 (2006.01); G02B 13/24 (2006.01); G02B 13/00 (2006.01); G02B 9/64 (2006.01); G02B 17/08 (2006.01); G03B 21/14 (2006.01); G03B 21/28 (2006.01); G03B 21/00 (2006.01);
U.S. Cl.
CPC ...
G02B 13/24 (2013.01); G02B 9/64 (2013.01); G02B 13/0045 (2013.01); G02B 17/08 (2013.01); G03B 21/008 (2013.01); G03B 21/142 (2013.01); G03B 21/28 (2013.01);
Abstract

The present invention discloses an ultra-short throw projection optical system, where an illumination system, a refractive lens component, and an aspherical reflector are sequentially disposed in a projection direction. The present invention provides a high resolution, implements a throw ratio below 0.18, and has no diffused focus at a high temperature, and the present invention implements that a resolution is not reduced and a distortion does not become larger at different throw distances.

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Gong, Junqiang. (2019). Ultra-short throw projection optical system (U.S. Patent No. 10444478). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10444478

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