Gradient index optical element and method for making the same

Details Gradient index optical element and method for making the same Gradient index optical element and method for making the same

1996-11-04

1998-10-06

Font, Frank G.

Optical: systems and elements

Lens

359642, G02B 300

Patent

active

058186441

ABSTRACT:
A gradient index optical element comprises a component capable of absorbing light unnecessary for image formation and observation. The optical element is made according to a solgel process wherein a gradient index glass or plastic body is initially made and then incorporated with a light-absorbing component such as CuO and FeO that absorbs unnecessary light. The optical element has a filter function for eliminating light unnecessary for image formation and observation. A lens system having a reduced number of optical elements is realized.

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