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.:
Date of Patent:
May. 04, 2021
Filed:
Oct. 22, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Seong Min Park, Daejeon, KR;
Sang Choll Han, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/20 (2006.01); G02B 5/04 (2006.01); G02B 5/32 (2006.01);
U.S. Cl.
CPC ...
G02B 5/203 (2013.01); G02B 5/04 (2013.01); G02B 5/32 (2013.01);
Abstract
The present application relates to an optical isolation element comprising a first optical path changing element, a second optical path changing element and a third optical path changing element, each of those comprises a light entrance surface and a light exit surface. The optical isolation element has an excellent optical isolation ratio, may not require separate external force when driven, and can be applied to various applications such as the field of optical communication or laser optics, the field of security or privacy protection, brightness enhancement of displays, or a use for hiding and covering.