Pyroelectric infrared sensor

Details Pyroelectric infrared sensor Pyroelectric infrared sensor

1988-03-18

1989-07-25

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503381, G01J 500

Patent

active

048516821

ABSTRACT:
A polymer pyroelectric infrared sensor having an improved sensitivity and an improved heat resistance is formed by disposing a pyroelectric film having electrodes for taking out a pyroelectric output on both sides so as to face a window for introducing infrared rays. The pyroelectric film comprises a pyroelectric film of vinylidene fluoride copolymer having a crystallinity of 60% or more and a relative dielectric constant of 10 or below at 25.degree. C. and in a low frequency region of 0.1-10 Hz.

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patent: 3809920 (1974-05-01), Cohen et al.
patent: 4577132 (1986-03-01), Ohigashi et al.
Keigoro Shigiyama, "PVDF Pyroelectric Infrared Detector." National Technical Report, vol. 26, No. 3 (Jun. 1980) pp. 517-525.
Ruland, W. Acta, Cryst. (1961) 14, pp. 1180-1185 "X-ray Determination of Crystallinity and Diffuse Disorder Scattering".

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