Patent · US Active

Optical lens assembly

US11112579B2 · kind B2 · utility

1Cited by

0References

17Claims

0Family size

Assignee

Zhejiang Sunny Optical Co., Ltd · CN

Inventors

Binbin Liu · Beijing, CN
Jianke Wenren · 马宅镇, CN
Fujian Dai · Ningbo City, CN

Key dates

Filing date	Oct 23, 2017
Grant date	Sep 7, 2021
Priority date	—
Expiry date	Apr 28, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/18
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present disclosure discloses an optical lens assembly. The optical lens assembly includes sequentially a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis. The first lens has a positive refractive power, and an object-side surface of the first lens is a convex surface. The second lens has a negative refractive power, and an object-side surface of the second lens is a concave surface. The third lens has a positive refractive power or a negative refractive power. The fourth lens has a negative refractive power. An air spacing T23 between the second lens and the third lens on the optical axis and an air spacing T34 between the third lens and the fourth lens on the optical axis satisfy: T23/T34<0.2.

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