Patent · US Active

Optical imaging lens

US10488618B2 · kind B2 · utility

3Cited by

1References

19Claims

0Family size

Assignee

GENIUS ELECTRONIC OPTICAL CO., LTD. · TW

Inventors

Matthew Bone · Fremont, US
Baina Chen · Fujian, CN
Yanbin Chen · Taichung, TW

Key dates

Filing date	Apr 19, 2017
Grant date	Nov 26, 2019
Priority date	—
Expiry date	Apr 19, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/004
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical imaging lens includes a first lens of negative refractive power, a second lens of negative refractive power and of an image-side surface with a concave portion in a vicinity of its optical-axis, at least one of an object-side surface and of an image-side surface of a third lens being an aspherical surface and a fourth lens of an object-side surface with a concave portion in a vicinity of its optical-axis. An aperture stop is disposed between the first lens element and the third lens element. The Abbe number ν1 of the first lens element and the Abbe number ν4 of the fourth lens element satisfy 45≤ν1≤65 or 18≤ν4≤35.

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