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:
Jan. 07, 2020
Filed:
Jan. 25, 2017
Applicant:
Genius Electronic Optical Co., Ltd., Taichung, TW;
Inventors:
Assignee:
Genius Electronic Optical Co., Ltd., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 25/00 (2006.01); G02B 9/34 (2006.01);
U.S. Cl.
CPC ...
G02B 9/34 (2013.01); G02B 25/001 (2013.01);
Abstract
An ocular optical system includes a first lens element of a display-side surface with a convex portion in a vicinity of its periphery, a second lens element of positive refractive power and an eye-side surface with a concave portion in a vicinity of its periphery, a third lens element of negative refractive power and an display-side surface with a concave portion in a vicinity of an optical-axis, or a fourth lens element of an display-side surface with a concave portion in a vicinity of the optical-axis.