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:
Oct. 22, 2024
Filed:
Apr. 26, 2019
Zhejiang Sunny Optics Co., Ltd., Zhejiang, CN;
ZHEJIANG SUNNY OPTICS CO., LTD., Ningbo, CN;
Abstract
An optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a first lens (E), a second lens (E), a third lens (E), a fourth lens (E), a fifth lens (E), a sixth lens (E), a seventh lens (E) and an eighth lens (E) with refractive power. An object-side surface (S) of the first lens (E) is a convex surface. The fourth lens (E) has positive refractive power. The seventh lens (E) has negative refractive power, and an object-side surface (S) thereof is a convex surface. There is an air space between any two adjacent lenses in the first lens (E) to the eighth lens (E). An effective focal length f1 of the first lens (E) and an effective focal length f4 of the fourth lens (E) meet 1.7<|f4/f1|<4.