Camera lens group

US12117671B2 · kind B2 · utility

Assignee

• Zhejiang Sunny Optics Co., Ltd · CN

Inventors

• Xiaofeng Weng · 丈亭镇, CN
• Jianke Wenren · 马宅镇, CN
• Fujian Dai · Ningbo City, CN
• Liefeng Zhao · 丈亭镇, CN

Key dates

• Filing date: Oct 25, 2021
• Grant date: Oct 15, 2024
• Expiry date: Dec 9, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B13/0045
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A camera lens group, along an optical axis from an object side to an image side, sequentially includes a first lens to a seventh lens. The first lens has positive refractive power; the second lens has refractive power; the third lens has refractive power; the fourth lens has refractive power, a convex object-side surface, and a convex image-side surface; the fifth lens has refractive power, a convex object-side surface, and a concave image-side surface; the sixth lens has refractive power, and a concave image-side surface; and the seventh lens has refractive power. A total effective focal length f of the camera lens group and an entrance pupil diameter EPD of the camera lens group satisfy: f/EPD<1.45.