Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1992-04-21
1993-07-27
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503383, 250352, G01N 2145, G01J 506
Patent
active
052312895
ABSTRACT:
A thermal photodetector includes a thermal photodetector element and a support stand for supporting the thermal photodetector element. The support stand is made of a material of which heat conduction is relatively small, and is thermally connected to and mounted on a mount of which temperature is controlled to a predetermined temperature. The sizes of the support stand are determined such that the quantity of heat conduction in a heat conduction passage from the thermal photodetector element to the mount is equal to a predetermined quantity. The method of manufacturing this thermal detector includes the steps of exposing, to light, a photosensitive glass plate having a thickness corresponding to the height of a support stand of a thermal photodetector to be manufactured. The light exposure is made with the use of a mask having a shape which corresponds to the shape in transverse section of the support stand. The photosensitive glass plate is adhered to pyroelectric crystal plate provided on one surface thereof with an electrode. The surface of the pyroelectric crystal plate on which the electrode is mounted faces the photosensitive glass plate. The surface of the pyroelectric crystal plate opposite to the adhered surface is polished. The light-sensed portion of the photosensitive glass plate is then removed.
REFERENCES:
patent: 4147562 (1979-04-01), Chiang et al.
patent: 4463262 (1984-07-01), Contreras
patent: 4480979 (1989-11-01), Yoshida
patent: 4982093 (1991-01-01), Voles
patent: 5041723 (1991-08-01), Ishida et al.
patent: 5081358 (1992-01-01), Yoshikawa
Kishihara Hiroyuki
Kita Jun-ichi
Glick Edward J.
Hannaher Constantine
Shimadzu Corporation
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