Electroacoustic device for reading an optical image in two dimen

Details Electroacoustic device for reading an optical image in two dimen Electroacoustic device for reading an optical image in two dimen

1976-12-14

1978-04-18

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4104

Patent

active

040853489

ABSTRACT:
A device for the electrical line-by-line analysis of an optical image in two dimensions. It comprises a piezoelectric medium associated with a semiconductive medium onto which the image is projected, and at least three transducers emitting surface elastic waves on the piezoelectric medium. Two of three transducers emit pulses in two separate directions, the convergence point of which constitutes a reading point of the image. This point moves as a function of time along a straight line which constitutes an analysis line of said image. The third transducer emits a long wave, the wave vector of which is such that the wave vector resulting from the interaction of the three waves is zero.

REFERENCES:
patent: B518226 (1976-02-01), McGinty
patent: 3895430 (1975-07-01), Wilson et al.
patent: 3944732 (1976-03-01), Kino
patent: 4012586 (1977-03-01), Roos
patent: 4016412 (1977-04-01), Stern
patent: 4025954 (1977-05-01), Bert
patent: 4041536 (1977-08-01), Melcher et al.

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