Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1977-04-12
1978-12-12
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
357 26, H01L 4110
Patent
active
041297989
ABSTRACT:
The device comprises a silicon substrate, means for generating a pulse elastic wave at the surface of the substrate on to which the image for read-out is projected, and elementary detectors detecting the conductivity of the substrate. Each of the detectors is constituted, in one embodiment, by two conductive bands arranged at a short interval from one another, perpendicularly to the direction of propagation of the elastic wave; a potential difference is applied between the conductive bands. The elementary detectors then sequentially furnish an electrical signal resulting at each point on the substrate from the superimposition on the one hand of the conductivity due to the image by photoelectric effect, and on the other of the conductivity due to the elastic wave by piezo-resistive effect.
REFERENCES:
patent: 3691406 (1972-09-01), Mize
patent: 3792321 (1974-02-01), Seifert
patent: 3903406 (1975-09-01), London
patent: 3935564 (1976-01-01), Quate
patent: 3970778 (1976-07-01), Adkins
patent: 4012586 (1977-03-01), Roos
patent: 4028565 (1977-06-01), Davis
patent: 4028719 (1977-06-01), Curtis
patent: 4047214 (1977-09-01), Francombe et al.
"Thomson-CSF"
Budd Mark O.
Plottel Roland
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