Infrared detective element
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United States of America Patent
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Jun 18, 1991
Grant Date -
N/A
app pub date -
Oct 5, 1989
filing date -
May 26, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An infrared detective element for detecting a dose of infrared rays by a change in electrical resistance of monofilaments composed mainly of silicon carbide upon infrared radiation thereto, either the monofilaments having a resistivity of 1.0.times.10.sup.5 to 1.0.times.10.sup.3 .OMEGA..cm at room temperature and a diameter of 3 to 200 .mu.m, or the monofilaments having a composition: Si: 50 to 70 wt % C: 28 to 40 wt % O: 0 to 10 wt % the balance (H and/or Ti or Zr): 0 to 10 wt %, and having a resistivity of 1.0.times.10.sup.5 to 1.0.times.10.sup.-1 .OMEGA..cm at room temperature and a diameter of 3 to 200 .mu.m, in either case, the monofilaments being arranged between electrodes without bringing them into contact with each other. The infrared detective elements of the present invention are excellent in properties, especially short response times.
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