Patent · US Active

Lens assembly

US9529179B2 · kind B2 · utility

2Cited by

0References

20Claims

0Family size

Assignee

Zhejiang Sunny Optics Co., Ltd · CN

Inventors

Lin Huang · 丈亭镇, CN
Fujian Dai · Ningbo City, CN

Key dates

Filing date	Jan 30, 2015
Grant date	Dec 27, 2016
Priority date	—
Expiry date	Jan 30, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04N13/204
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Provided is a lens assembly including: a first lens, a second lens, a third lens, a fourth lens, a fifth lens from an object side of the lens assembly to an image side of the lens assembly in turn. The first lens is of a negative refracting power, an object side thereof is of a convexity, an image side thereof is of a concavity. The second lens is of a positive refracting power, an image side thereof is of a convexity. The third lens is of a negative refracting power, an image side thereof is of a concavity. The fourth lens is of a positive refracting power, an image side thereof is of a convexity. The fifth lens is of a negative refracting power, an object side thereof is of a convexity, an image side thereof is of a concavity. The lens assembly meets: 0<(R3+R4)/(R3−R4)<1.2 and 7<T12/T23<25.

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