Patent · US Active

Method for modifying the refractive index of an optical material

US9144491B2 · kind B2 · utility

33Cited by

19References

20Claims

0Family size

Assignee

University of Rochester · US

Inventors

Wayne H. Knox · Rochester, US
Dharmendra Jani · Keller, US
Li Ding · Hefei, CN

Key dates

Filing date	Sep 21, 2011
Grant date	Sep 29, 2015
Priority date	—
Expiry date	Sep 21, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG02C2202/14
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method for modifying the refractive index of an optical polymeric material. The method comprises continuously irradiating predetermined regions of an optical, polymeric material with femtosecond laser pulses to form a gradient index refractive structure within the material. An optical device includes an optical, polymeric lens material having an anterior surface and posterior surface and an optical axis intersecting the surfaces and at least one laser-modified, GRIN layer disposed between the anterior surface and the posterior surface and arranged along a first axis 45° to 90° to the optical axis, and further characterized by a variation in index of refraction across at least one of at least a portion of the adjacent segments and along each segment.

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