Patent · US Active

Lens assembly

US10866388B2 · kind B2 · utility

0Cited by

0References

18Claims

0Family size

Assignees

SINTAI OPTICAL (SHENZHEN) CO., LTD. · CN
ASIA OPTICAL CO., INC. · TW

Inventors

Bo-Yan Chen · Zhejiang, CN
Hsi-Ling Chang · Taichung, TW

Key dates

Filing date	Oct 18, 2018
Grant date	Dec 15, 2020
Priority date	—
Expiry date	Mar 22, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/006
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lens assembly comprises sequentially from an object side to an image side along an optical axis a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens is with negative refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens is with refractive power. The third lens is a biconvex lens with positive refractive power. The fourth lens is with refractive power and includes a convex surface facing the image side. The fifth lens is a biconvex lens with positive refractive power. The sixth lens is with negative refractive power and includes a concave surface facing the object side. The seventh lens is a meniscus lens with refractive power.

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