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:
Feb. 18, 2025
Filed:
Oct. 18, 2019
Jiangxi Jingchao Optical Co., Ltd., Nanchang, CN;
JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang, CN;
Abstract
An optical imaging system sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis. The first lens has positive refractive power, with an object-side surface being convex at the optical axis; the second lens has refractive power, with an image-side surface being convex at the optical axis; the third lens has refractive power; the fourth lens has positive refractive power, with an image-side surface being convex at the optical axis; the fifth lens has negative refractive power, with an object-side surface being convex at the optical axis and an image-side surface being concave at the optical axis; a diaphragm is arranged between the object side of the optical imaging system and the fifth lens.