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:
Jul. 22, 2025
Filed:
Nov. 27, 2021
Jiangxi Jingchao Optical Co., Ltd., Nanchang, CN;
JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang, CN;
Abstract
The optical system includes, successively in order from an object side to an image side: a first lens having a negative refractive power, an image side surface of the first lens being concave near an optical axis; a second lens having a positive refractive power, an object side surface thereof being convex near the optical axis, an image side surface of the second lens being concave near the optical axis; a third lens having a positive refractive power, an object side surface thereof being convex near the optical axis, an image side surface of the third lens being convex near the optical axis; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power, an object side surface thereof being convex near the optical axis, an image side surface thereof being concave near the optical axis. The optical system satisfies the following condition: 0.58≤R12/f≤0.71.