Integrated filter and detector array for spectral imaging

Details Integrated filter and detector array for spectral imaging Integrated filter and detector array for spectral imaging

1991-08-12

1992-10-27

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356328, 357 30, 359859, G01N 2127, G02B 520

Patent

active

051591995

ABSTRACT:
A spectral imaging system having an integrated filter and photodetector array. The filter has narrow transmission bands which vary in frequency along the photodetector array. The frequency variation of the transmission bands is matched to, and aligned with, the frequency variation of a received spectral image. The filter is deposited directly on the photodetector array by a low temperature deposition process. By depositing the filter directly on the photodetector array, permanent alignment is achieved for all temperatures, spectral crosstalk is substantially eliminated, and a high signal-to-noise ratio is achieved.

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Hong-Yee Chiu and Williams Collins, "A Spectroradiometer for Airborne Remote Sensing" Photographic Engineering and Remote Sensing, vol. 44, No. 4 (Apr. 1978) pp. 507-517.

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