Optical filter

Details Optical filter Optical filter

1992-10-01

1993-11-02

Arnold, Bruce Y.

Optical: systems and elements

Light interference

Produced by coating or lamina

359580, G02B 528, G02B 510

Patent

active

052588726

ABSTRACT:
A high reflection optical filter is described which comprises a film of a dielectric, inorganic or organic or other suitable material deposited on a suitable optically transparent substrate, the film having between a surface thereof exposed to incident radiation and an interface with the substrate a sinusoidal refractive index profile with selected number of periods and selected phase at the exposed surface in single band configurations, and superimposed multiple sinusoidal refractive index profiles with selected phase alignment of the superimposed profiles at the exposed surface in multi-band configurations.

REFERENCES:
patent: 4545646 (1985-10-01), Chern et al.
patent: 4826267 (1989-05-01), Hall et al.
patent: 4952025 (1990-08-01), Gunning, III
patent: 5009485 (1991-04-01), Hall
patent: 5028136 (1991-07-01), Murarka et al.

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