Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1986-04-07
1988-04-12
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
244 313, 250339, 250342, 358113, G01B 1126
Patent
active
047370289
ABSTRACT:
The invention disclosed here is a sensor comprised of a laser designator, a and block filter and a two-dimensional sensor that can "see" the target in one band and the designator in another band, thereby giving a single sensor dual band system--something not offered by any sensor/designator operating in the wavelength band intrinsically inherent to this sensor technology. The sensor is a two-dimensional starring array constructed from Schottky Barrier Diodes utilizing a platinum silicide sensing layer. This construct normally exhibits a spectral response from around 1 micron to around 6 microns. The sensor has been proposed as a passive thermal imager in the 3-5 micron band because of its responsivity (Quantum Efficiency) is maximum in the 3-5 micron band. Typically, transmission windows for these sensors are designed to block off the solar radiation from the visible out to the 3 micron region to prevent saturation of the sensor in the daytime. This invention proposes to remove the filter and replace it with a band block filter that cuts out the 2-3 micron solar radiation and leaves the 1-2 micron region transmissive, as well as the 3-5 micron atmospheric window.
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Buczinski Stephen C.
Bush Freddie M.
Sims Robert C.
The United States of America as represented by the Secretary of
Wallace Linda J.
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