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:
May. 21, 2024
Filed:
Oct. 01, 2020
Zhejiang Sunny Optical Co., Ltd, Ningbo, CN;
Long Li, Ningbo, CN;
Saifeng Lyu, Ningbo, CN;
ZHEJIANG SUNNY OPTICAL CO., LTD, Ningbo, CN;
Abstract
The present disclosure discloses an optical imaging lens group including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, each of which has refractive power. Each of the first lens and the fourth lens has positive refractive power. The eighth lens has negative refractive power. An object-side surface of the third lens is a convex surface, and an image-side surface thereof is a concave surface. An object-side surface of the fourth lens is a concave surface, and an image-side surface thereof is a convex surface. A total effective focal length f of the optical imaging lens group, an effective focal length f2 of the second lens, and an effective focal length f3 of the third lens satisfy |f/f2|+|f/f3|<1.