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. 16, 2024
Filed:
Apr. 09, 2020
Zhejiang Sunny Optical Co., Ltd, Ningbo, CN;
Ming Li, Ningbo, CN;
Saifeng Lyu, Ningbo, CN;
Zhejiang Sunny Optical Co., Ltd, Ningbo, CN;
Abstract
The disclosure discloses an optical imaging system including a first lens, a second lens, a third lens, and a plurality of subsequent lenses with refractive power and disposed sequentially along an optical axis from an object side to an image side, wherein a lens adjacent to an object side of a lens closest to an imaging plane has a positive refractive power, wherein the lens closest to the imaging plane has a negative refractive power, and an object side surface and an image side surface of the lens closest to an imaging plane are aspheric, and wherein a combined focal length f23 of the second lens and the third lens and an effective focal length fn of the lens closest to the imaging plane satisfy: −1.5<f23/fn<5.