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:
Sep. 10, 2024
Filed:
Mar. 16, 2020
Jiangxi Jingchao Optical Co., Ltd., Nanchang, CN;
JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang, CN;
Abstract
An optical system includes, successively in order from an object side to an image side: a first lens, an object side surface thereof being concave at a paraxial area, and an image side surface thereof being convex at the paraxial area thereof; a second lens having a positive refractive power, an object side surface thereof being convex at a paraxial area, and an image side surface thereof being concave at the paraxial area; a third lens having a positive refractive power, and an image side surface thereof being convex at a paraxial area; a fourth lens; a fifth lens; a sixth lens; a seventh lens; and an eighth lens having a negative refractive power, an object side surface thereof being convex at a paraxial area, and an image side surface thereof being concave at the paraxial area.