Patent · US Active

Optical lens assembly, image capturing module, and mobile terminal

US12174345B2 · kind B2 · utility

0Cited by

4References

19Claims

0Family size

Assignee

JIANGXI JINGCHAO OPTICAL CO., LTD. · CN

Inventors

Jinhua Zou · Nanchang, CN
Binbin Liu · Beijing, CN
Hairong ZOU · Nanchang, CN

Key dates

Filing date	Jun 19, 2019
Grant date	Dec 24, 2024
Priority date	—
Expiry date	Jan 21, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG02B9/34
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical lens assembly, sequentially comprising from an object side to an image side: a first lens; a second lens having positive refractive power, the object side surface of the second lens being concave at the circumference, and the image side surface of the second lens being convex at the circumference; a third lens; and a fourth lens having positive refractive power, the image side surface of the fourth lens being concave at the optical axis, the object side surface and the image side surface of the fourth lens being aspherical, and at least one of the object side surface and the image side surface of the fourth lens having an inflection point. The optical lens assembly satisfies relationship: TT/f<1.3, TT is the distance on the optical axis from the object side surface of the first lens to the image side surface of the fourth lens, and f is effective focal length.

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