Optical imaging lens including seven lenses of +-+-++-, +-+-+--, +-+--+-, +++--+-, or +---++- refractive powers

US11372207B2 · kind B2 · utility

Assignee

• Genius Electronic Optical (Xiamen) Co., Ltd. · CN

Inventors

• Jia-Sin Jhang · Taichung, TW
• Yongfeng Lai · Xiamen, CN
• Jianpeng Li · Fujian, CN

Key dates

• Filing date: Dec 5, 2019
• Grant date: Jun 28, 2022
• Expiry date: Aug 19, 2040

Classification

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

Abstract

An optical imaging lens includes a first lens element to a seventh lens element. A periphery region of the image-side surface of the first lens element is concave, a periphery region of the object-side surface of the third lens element is concave, the fourth lens element has negative refracting power, an optical-axis region of the object-side surface of the fifth lens element is concave, an optical-axis region of the object-side surface of the sixth lens element is convex and an optical-axis region of the object-side surface of the seventh lens element is concave. EFL is an effective focal length of the optical imaging lens, BFL is a distance from the image-side surface of the seventh lens element to an image plane, AAG is a sum of six air gaps and T1 is a thickness of the first lens element to satisfy EFL/BFL≥4.800 and AAG/T1≤2.000.