Patent · US Expired

Focusing device

US7173767B2 · kind B2 · utility

21Cited by

6References

18Claims

0Family size

Assignee

Avanex Corporation · US

Inventor

Klaus Satzke · Tamm, DE

Key dates

Filing date	Nov 27, 2003
Grant date	Feb 6, 2007
Priority date	—
Expiry date	Nov 27, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/32
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A focusing device with a refractive index profile changing from the center of the focusing device towards its perimeter, is made of a material wherein the lateral refractive index distribution of the focusing device material is homogeneous and wherein the focusing device comprises holes for introducing a graded refractive index profile. This allows accurate control of the graded refractive index profile.

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