Radiant energy – Infrared-to-visible imaging – Including detector array
Patent
1994-06-03
1996-05-14
Hannaher, Constantine
Radiant energy
Infrared-to-visible imaging
Including detector array
250334, 2503384, 25033902, 25037008, 25037014, H01L 25065, H01L 27146, H01L 310272
Patent
active
055170293
ABSTRACT:
A dual band IR scanning focal plane assembly includes two linear detector arrays in a close spaced configuration monolithically integrated on a common substrate. A medium wave IR staggered element linear array is formed on the front (111)B face of a (111) crystallographically oriented CdZnTe substrate in an MCT layer deposited by the molecular beam epitaxial (MBE) process. A long wave IR staggered element linear array is formed on the back (111)A face of the substrate in an MCT layer deposited by the liquid phase epitaxial (LPE) process. The sets of odd and even rows of the LWIR array on the back face are contiguous, while the sets of odd and even rows of the MWIR array on the front face are close-spaced, the spacing being just wide enough to allow a clear optical path to the underlying linear LWIR array. The arrangement provides simplified spectral separation of the simultaneously readout MWIR and LWIR images.
REFERENCES:
patent: 4465940 (1984-08-01), Graff et al.
patent: 4996427 (1991-02-01), Noble et al.
patent: 5036203 (1991-07-01), Solomon
Noble Milton L.
Yanka Robert W.
Checkovich Paul
Hannaher Constantine
Martin Marietta Corporation
Young Stephen A.
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