Frequency agile filter and technique

Details Frequency agile filter and technique Frequency agile filter and technique

1995-06-26

1998-07-21

Dzierzynski, Paul M.

Optical: systems and elements

Optical modulator

Light wave directional modulation

359309, 359285, 359572, G02F 133, G02F 111, G02B 818

Patent

active

057841918

ABSTRACT:
Combining a tristimulus filter, two lenses, and a crystalline colloidal ay filter in an arrangement resulting in a visible optical limiter without substantial color distortion that can be used for eye or sensor protection. Only three nonlinear colloidal arrays are needed to Bragg reflect over the pass bands of the tristimulus filter. The nonlinear colloidal array is arranged so that the band reflected (at the least) completely overlaps the pass band of the tristimulus filter.

REFERENCES:
patent: 3851951 (1974-12-01), Eveleth
patent: 4556290 (1985-12-01), Roulot
patent: 5173808 (1992-12-01), Auer
patent: 5410371 (1995-04-01), Lambert

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