Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1991-06-10
1994-01-25
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250349, 2503383, G01J 510
Patent
active
052818187
ABSTRACT:
An apparatus for detecting position or temperature distribution of an object has a lens which is rotated around a pyroelectric type infrared sensor to collect incident infrared ray on the sensor while scanning the incident infrared ray in a rotational direction. The optical scanning is operated also in the longitudinal direction by providing with a plurality of lenses having different view in the longitudinal direction, the lenses being rotated sequentialy around the sensor. Further, detection of temperature of an object is conducted without using optical chopper by alternately observing the object and a standard temperature material which is arranged in a part of view, or by providing a stationary slit unit on a curved surface formed around a center axis which is the same as the rotation axis of the lens and a movable slit unit having the same pitch and arranged adjacent to the stationary slit unit and rotating together with the lens to intermitting the incident infrared ray.
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patent: 5004922 (1991-04-01), Edwards
patent: 5159200 (1992-10-01), Dunbar et al.
"Pyroelectric Detector Arrays", S. G. Porter, Plessey Research (Caswell) Ltd., UK, 1985, pp. 30-33.
"Pyroelectric Linear Array Infrared Sensors Made of C-Axis-Oriented La-Modified PbTiO.sub.3 Thin Films", Ryoichi Takayama et al., Matsushita Electric Industrial Co., Ltd., Publication Feb. 8, 1988, J. Appl. Phys 63(12), Jun. 15, 1988, pp. 5868-5872.
"A New Pyroelectric Infrared Focal Plane Array", Technical Digest of the 8th Sensor Symposium, 1989, pp. 59-62, Yoshihiro Tomita et al.
"Pyroelectric Infrared Array Sensors Made of C-Axis-Oriented La-Modified PbTiO.sub.3 Thin Films", Ryoichi Takayama et al., Sensors & Actuators, A21-A23 (1990) 508-512.
Takayama Ryoichi
Tomita Yoshihiro
Yamamoto Yoshiharu
Yoshikawa Motonobu
Dunn Drew A.
Fields Carolyn E.
Matsushita Electric - Industrial Co., Ltd.
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