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:
Oct. 13, 2020
Filed:
Oct. 16, 2018
Applicant:
Calin Technology Co., Ltd., Taichung, TW;
Inventors:
Chien-Hsiung Tseng, Hsinchu, TW;
Chia-Wei Liao, Taichung, TW;
Assignee:
CALIN TECHNOLOGY CO., LTD., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/64 (2006.01); G02B 5/20 (2006.01); G02B 13/00 (2006.01);
U.S. Cl.
CPC ...
G02B 9/64 (2013.01); G02B 5/208 (2013.01); G02B 13/0045 (2013.01);
Abstract
An optical image lens used in narrow field of view and having compact size and low distortion characteristics is disclosed to include, from an object side to an image side along an optical axis, a first lens with positive refractive power, a second lens and a third lens glued as a doublet with negative refractive power, a fourth lens and a fifth lens glued as a doublet with positive refractive power, a sixth lens with positive refractive power, a seventh lens with positive refractive power, and an eighth lens with negative refractive power.