Optical imaging lens

US10989899B2 · kind B2 · utility

Assignee

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

Inventors

• Huabin Liao · Fujian, CN
• Wenbin Lin · Chicago, US
• Hai Lin · Fujian, CN

Key dates

• Filing date: Jul 24, 2018
• Grant date: Apr 27, 2021
• Expiry date: Aug 19, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B27/0037
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical imaging lens may include a first, a second, a third, and a fourth lens elements positioned in an order from an object side to an image side along an optical axis. Through designing concave and/or convex surfaces of the four lens elements, the optical imaging lens may provide improved imaging quality and optical characteristics, and have the ability to cooperate the demand of present smaller-sized electronic product while the optical imaging lens may satisfy TTL/TL≥1.700 and EFL/ImgH≥2.500, wherein a distance from the object-side surface of the first lens element to an image plane along the optical axis is represented by TTL, a distance from the object-side surface of the first lens element to the image-side surface of the fourth lens element along the optical axis is represented by TL, an effective focal length of the optical imaging lens is represented by EFL, and an image height of the optical imaging lens is represented by ImgH.