Process for forming a graded index optical material and structur

Details Process for forming a graded index optical material and structur Process for forming a graded index optical material and structur

1983-09-02

1985-10-08

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 531, 427162, 427167, G02B 518, B05D 306

Patent

active

045456461

ABSTRACT:
A process for depositing on the surface of a substrate a layer of a chosen material having continuous gradations in refractive index in a predetermined periodic pattern. The substrate is exposed to two vapor phase reactants which react upon radiation-inducement to produce the chosen material, and the relative proportion of the reactants is varied in a predetermined and continuous sequence to produce continuous gradations in the stoichiometric composition and refractive index of the deposited layer as a function of thickness. Additionally, predetermined changes in refractive index and/or thickness across the horizontal surface of the substrate may be produced in combination with the change in refractive index as a function of thickness. Diffraction optical elements formed by such a process include various optical filters and reflective optical coatings.

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patent: 4371587 (1983-02-01), Peters
patent: 4416217 (1983-11-01), Nakamura
patent: 4482207 (1984-11-01), Thomas

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