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

US11460670B2 · kind B2 · utility

Assignee

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

Inventors

• Hung-Chien Hsieh · Taichung, TW
• Lanlan Zhang · Beijing, CN
• Ou Zhou · Xiamen, CN

Key dates

• Filing date: Dec 17, 2019
• Grant date: Oct 4, 2022
• Expiry date: Sep 30, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B9/64
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical imaging lens may include a first, a second, a third, a fourth, a fifth, a sixth and a seventh lens element positioned in an order from an object side to an image side along an optical axis. Through designing concave and/or convex surface of the lens elements, the optical imaging lens may have improved imaging quality and improved assembly yield while the optical imaging lens may satisfy (|Sag51/ER51|+|Sag52/ER52|)/2≤20.000%, wherein a Sag of an optical boundary of the object-side surface of the fifth lens element is represented by Sag51, a Sag of an optical boundary of the image-side surface of the fifth lens element is represented by Sag52, an effective radius of the object-side surface of the fifth lens element is represented by ER51, and an effective radius of the image-side surface of the fifth lens element is represented by ER52.