Circularly polarized multi-bandpass interference contrast enhanc

Details Circularly polarized multi-bandpass interference contrast enhanc Circularly polarized multi-bandpass interference contrast enhanc

1987-09-04

1990-01-23

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358252, 350276R, 350316, H04N 572

Patent

active

048962180

ABSTRACT:
A contrast enhancement filter for use on display devices which utilizes a multiple bandpass optical interference filter with the passbands matched to any predetermined desired frequencies of the display device and a circular polarizer disposed outwardly from said interference filter and an anti-reflective coating deposited thereon.

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Principles of Optics, by Born & Wolf, Pergamon Press, 1959, pp. 51, 65-69.

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