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. 14, 2025
Filed:
Apr. 02, 2020
Jiangxi Jingchao Optical Co., Ltd., Jiangxi, CN;
JIANGXI JINGCHAO OPTICAL CO., LTD., Nanchang, CN;
Abstract
An optical system, a lens module, and a terminal device are provided. The optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens with a positive refractive power has an object-side surface which is convex at an optical axis. The second lens with a negative refractive power has an image-side surface which is concave at the optical axis. The third lens with a negative refractive power has an object-side surface which is convex at the optical axis and an image-side surface which is concave at the optical axis. The fourth lens with a negative refractive power has an image-side surface which is concave at the optical axis. The fifth lens and the sixth lens have the refractive power. The optical system satisfies expression 1<ftLtl4/ftGtl4<1.5.