Patent · US Active

Slim lens assembly

US10705315B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignees

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

Inventors

Chien-Hung Chen · Taipei, TW
Hsi-Ling Chang · Taichung, TW

Key dates

Filing date	May 7, 2018
Grant date	Jul 7, 2020
Priority date	—
Expiry date	Jul 4, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/005
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A slim lens assembly in accordance with the invention in order from an object side to an image side along an optical axis, comprises a first lens, a second lens, a third lens and a fourth lens. The first lens is with positive refractive power, which includes a convex surface facing an image side. The second lens is with positive refractive power, which includes a concave surface facing the image side. The third lens is with positive refractive power, which includes a concave surface facing the object side and a convex surface facing the image side. The fourth lens is with positive refractive power.

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