Noise reducing infrared reticle/detector arrangement

Details Noise reducing infrared reticle/detector arrangement Noise reducing infrared reticle/detector arrangement

1990-06-18

1992-02-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250342, 244 316, G01J 120, G06F 1550

Patent

active

050916378

ABSTRACT:
The electronic simplicity of a rotating-telescope target acquisition device and the noise immunity and wide field of view of a non-rotating array device are combined in an assembly (10) using a rotating refractory telescope (21) on a gimbaled platform (28) and a combination reticle (38) and infrared detector array (34) on the same platform (28). The detector array (34) is segmented (50) to detect the direction in which a target is substantially off the telescope's optical axis (32), and the detector array (34) is also shielded (35) against any radiation coming from outside the optical path of the telescope (21). The reticle (38) also serves as the electrical connection (42,62) between the detector segments (40,50) and the contact pads (44,64) on the detector plate (36) and as a non-emitting shield against any external radiation.

REFERENCES:
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patent: 3557369 (1971-01-01), Rubin
patent: 3739175 (1973-06-01), Mabee et al.
patent: 3872208 (1975-03-01), Hopson et al.
patent: 3944167 (1976-03-01), Figler et al.
patent: 4561611 (1985-12-01), Sinclair et al.
patent: 4703167 (1987-10-01), Okumura et al.

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