Patent · US Active

Wide-angle lens

US11841549B2 · kind B2 · utility

1Cited by

1References

15Claims

0Family size

Assignee

JIANGXI LIANCHUANG ELECTRONIC CO., LTD · CN

Inventors

Yumin Bao · Nanchang, CN
Weijian Chen · Nanchang, CN
Xuming Liu · Beijing, CN
Jiyong Zeng · Nanchang, CN

Key dates

Filing date	Aug 5, 2020
Grant date	Dec 12, 2023
Priority date	—
Expiry date	Oct 8, 2042

Classification

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

Abstract

The present disclosure provides a wide-angle lens, including a first lens group having a negative focal power, a second lens group having a positive focal power, and an aperture stop disposed between the first lens group and the second lens group. The first lens group, from the object side to the imaging surface, sequentially includes a meniscus-shaped first lens having a negative focal power, a second lens having a negative focal power, and a third lens having a positive focal power. A concave surface of the first lens faces the imaging surface, and a concave surface of the second lens faces the imaging surface.

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