Optical imaging system

US11914222B2 · kind B2 · utility

Assignee

• Zhejiang Sunny Optics Co., Ltd · CN

Inventors

• Yuhao Wang · Hangzhou City, CN
• Yang Li · 丈亭镇, CN
• Lingbo He · Zhejiang, CN
• Fujian Dai · Ningbo City, CN
• Liefeng Zhao · 丈亭镇, CN

Key dates

• Filing date: Jan 5, 2021
• Grant date: Feb 27, 2024
• Expiry date: Apr 4, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/0025
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present disclosure discloses an optical imaging system including, sequentially from an object side to an image side along an optical axis, a first lens having refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens having refractive power, a convex object-side surface and a concave image-side surface; and a fifth lens having refractive power. A distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging system and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the optical imaging system satisfy: 1.0<TTL/ImgH<1.5.