Patent · US Active

Lens

US8054556B2 · kind B2 · utility

88Cited by

4References

16Claims

0Family size

Assignee

Young Optics Inc. · TW

Inventors

Sung-Nan Chen · Hsinchu, TW
Long-Sheng Liao · Taichung, TW
Ya-Ling Hsu · Baoshan, TW
Chao-Shun Chen · Hsinchu, TW

Key dates

Filing date	Nov 2, 2009
Grant date	Nov 8, 2011
Priority date	—
Expiry date	Jan 19, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B17/0852
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lens adapted to image a first image plane at a reduced side onto a magnified side is provided. The lens has an optical axis. The lens includes a lens group and a concave reflective mirror. The lens group is disposed in the light path between the reduced side and the magnified side. The concave reflective mirror is disposed in the light path between the lens group and the magnified side. The offset of the first image plane with respect to the optical axis is greater than 100%. The throw ratio of the lens is less than 0.3.

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