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. 06, 2024
Filed:
Apr. 04, 2019
Zhejiang Sunny Optics Co., Ltd., Zhejiang, CN;
ZHEJIANG SUNNY OPTICS CO., LTD., Ningbo, CN;
Abstract
The disclosure discloses an optical imaging system, sequentially includes 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 and a seventh lens, wherein the first lens has a positive refractive power; the second lens has a negative refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a convex surface; the third lens has a refractive power; the fourth lens has a positive refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a convex surface; the seventh lens has a negative refractive power, an object-side surface thereof is a convex surface; and a total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system satisfy f/EPD≤0.8.