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:
Apr. 04, 2017
Filed:
May. 04, 2015
Sintai Optical (Shenzhen) Co., Ltd., Shenzhen, Guandong Province, CN;
Asia Optical International Ltd., Tortola, GB;
Rong-Shun Syu, Taichung, TW;
SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen, Guangdong Province, CN;
ASIA OPTICAL INTERNATIONAL LTD., Tortola, VG;
Abstract
A lens assembly includes a first lens group, a stop and a second lens group, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens group includes a first lens and a second lens, wherein the first lens is with negative refractive power and the second lens is with positive refractive power. The second lens group includes a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the third lens and the fifth lens are with negative refractive power, and the fourth lens and the sixth lens are with positive refractive power. The lens assembly satisfies 0.23≦f/TL≦0.45, wherein f is an effective focal length of the lens assembly and TL is a distance from an object side surface of the first lens to an image plane along the optical axis.