Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1988-07-13
1990-05-08
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503381, 2503384, 324158R, 324501, G01R 3128
Patent
active
049240960
ABSTRACT:
The present method for non-contact testing of infrared photovoltaic detectors employs a probe which is positioned a distance "d" from a detector contact to form a capacitance between the probe and the detector. The probe signal is amplified by a preamplifier and the diode is excited both electrically, through the common contact, and optically with a known infrared signal. The probe position is controlled by measuring the probe to detector capacitance. Electrical and electro-optical detector parameters can be determined using standard AC circuit analysis techniques.
REFERENCES:
patent: 4286215 (1981-08-01), Miller
patent: 4709141 (1987-11-01), Olsen
patent: 4712057 (1987-12-01), Pau
Marek Mieszkowski, Kwan F. Leung and Andreas Mandelis, "Photopyroelectric Thermal Wave Detection via Contactless Capacitive Polyvinylidene Fluoride (PVDF)-Metal Probe-Tip Coupling", Review of Scientific Instruments, vol. 60, No. 3, (Mar. 1989), pp. 306-316.
P. R. Jay and H. C. Wright, "Photocapacity Analysis Using a Mercury Probe", Journal of Physics E: Scientific Instruments, vol. 14, No. 4, (Apr. 1981), pp. 408-409.
Butler Neal R.
Mroczkowski Jacek A.
Reine Marion B.
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