Infrared detector with reduced optical signature

Details Infrared detector with reduced optical signature Infrared detector with reduced optical signature

1991-12-18

2000-02-08

Hellner, Mark

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250332, H01J 724, H01L 2500

Patent

active

060230630

ABSTRACT:
Absorption coatings utilized in a detector array reduces the optical signature of an infrared detector or detector array by reducing the undesirable reflections from exposed metal surfaces and non-planar surface features within the photodetector array. The application of an absorption coating, consisting of a single layer black coating, a multi-layer dark coating, a moth-eye surface structure, or a combination of these, reduces the undesired reflected radiation for a relevant spectral range. Accordingly, the optical signature of the detector array is reduced and the problems of optical cross-talk and ghost images are eliminated.

REFERENCES:
patent: 5030828 (1991-07-01), Solomon
patent: 5130259 (1992-07-01), Bahraman
patent: 5144138 (1992-09-01), Kinch et al.

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