Thermal detector comprising a thermal insulator made of expanded

Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive

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2503383, 250332, G01J 534

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active

054183650

ABSTRACT:
A thermal detector with a monolithic structure comprises a layer of material sensitive to infrared radiation and an insulating layer constituted by a thermostable polymer that can be deposited as a thin layer and has a microporous structure. This insulating layer enables the thermal decoupling of the sensitive layer from the substrate comprising reading circuits with which the detector is provided. The performance characteristics of currently used monolithic infrared detectors can thus be substantially improved through the notable reduction of the thermal losses in the sensitive layer. This is achieved through the greatly reduced thermal conductivity of the layer of dielectric polymer. Application to infrared imaging devices.

REFERENCES:
patent: 4926051 (1990-05-01), Turnbull
patent: 5034608 (1991-07-01), Tavrow et al.
patent: 5087816 (1992-02-01), Robin et al.
patent: 5283438 (1994-02-01), Dautriche
patent: 5340527 (1994-08-01), Gibson et al.
Patent Abstracts of Japan, vol. 7, No. 272 (E-214), Dec. 3, 1983 & JP-A-58 154 151, Sep. 13, 1983, Kurosawa Toshiharu, et al., "Target Construction".

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