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:
Aug. 19, 2025
Filed:
Apr. 08, 2020
Jiangxi Jingchao Optical Co., Ltd., Nanchang, CN;
JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang, CN;
Abstract
An optical system includes a first lens having a positive refractive power; a second lens having a refractive power; a third lens having a negative refractive power and an object side surface and an image side surface being concave at circumferences; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power and an object side surface and an image side surface being aspherical, and at least one of the object side surface and the image side surface having an inflection point; and a sixth lens having a negative refractive power. 0.60<CT/SD<1.01; 5.5<TTL/CT<9.0; CTis a thickness of the first lens, SDis half of a maximum effective aperture of an object side surface of the first lens, TTL is a distance from the object side surface of the first lens to an imaging plane.