Patent · US Active

Optical imaging lens comprising four lens of −+−+ refractive powers

US11061204B2 · kind B2 · utility

0Cited by

0References

19Claims

0Family size

Assignee

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

Inventors

Jia-Sin Jhang · Taichung, TW
Baina Chen · Fujian, CN
Feng Li · Beijing, CN

Key dates

Filing date	Jun 10, 2019
Grant date	Jul 13, 2021
Priority date	—
Expiry date	Nov 28, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/04
WIPO fieldOptics
WIPO sectorInstruments

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. 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 increased field of view while the optical imaging lens may satisfy (T1+AAG)/T4≤1.700, wherein a thickness of the first lens element along the optical axis is represented by T1, a thickness of the fourth lens element along the optical axis is represented by T4, and a sum of the three air gaps from the first lens element to the fourth lens element along the optical axis is represented by AAG.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.