Pyroelectric device with coplanar electrodes

Details Pyroelectric device with coplanar electrodes Pyroelectric device with coplanar electrodes

1974-12-30

1976-01-13

Dixon, Harold A.

Radiant energy

Infrared-to-visible imaging

Including detector array

250338, 250370, 338 18, G01J 100

Patent

active

039327531

ABSTRACT:
A device which includes proximately disposed electrodes in side-by-side relationship on a surface of a pyroelectric material which electrodes serve to transmit a signal. The electroded surface preferably contains the c-axis, or is parallel to it, and the performance of the detector is determined, apart from material parameters, by the parallel length of oppositely disposed electrodes and the separation therebetween. Pyroelectric detectors fabricated with essentially single surface coplanar electrodes are more economical and achieve better responsivity than electrodes disposed in opposed planes normal to the c-axis, as in conventional devices. Poling requirements of materials useful in pyroelectric detectors of this invention are similar to the requirements of materials used with conventional c-face (i.e., c-axis normal) electroded devices.

REFERENCES:
patent: 3480777 (1969-11-01), Astheimer
patent: 3772518 (1973-11-01), Murayama
patent: 3816750 (1974-06-01), Liu
patent: 3842276 (1974-10-01), Southgate

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