Thermo-optical far infrared system

Details Thermo-optical far infrared system Thermo-optical far infrared system

1981-06-05

1990-09-25

Buczinski, Stephen C.

Radiant energy

Infrared-to-visible imaging

2503381, G02F 101, H01L 3100

Patent

active

049595466

ABSTRACT:
An infrared detecting system with a unique detector. The detector consists f an infrared-radiation absorbing layer on one side of thin-film substrate. On the other side of the substrate is a light reflecting layer, with a transducing material on the reflecting layer having a temperature-dependent index of refraction. Infrared radiation falling on the absorbing layer causes a temperature rise in this layer, a consequent rise in temperature of the reflecting layer and the transducing material, and a resulting change in refractive index of the material and a corresponding change in reflectance of the transducing material-reflecting layer combination. A read laser beam directed onto the material is thus reflected in accordance with the infrared radiation on the detector. Alternately, the reflecting layer may be on the same side of the substrate as the absorbing layer. Also, an additional reflector may be used between the reflecting layer and the transducing material.

REFERENCES:
patent: 4002902 (1977-01-01), Donjon et al.
patent: 4275302 (1981-06-01), Imbert et al.

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