Binary piezoelectric drive for lens focusing system

Details Binary piezoelectric drive for lens focusing system Binary piezoelectric drive for lens focusing system

1980-04-10

1982-08-03

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310369, 369 45, 369112, H01L 4108, G11B 700

Patent

active

043429351

ABSTRACT:
A deflection arrangement is described which comprises several piezocrystal elements which are separately driven by a positive or a negative voltage. In this configuration, there is no elastic hysteresis. The arrangement is particularly suitable for automatic focusing systems.

REFERENCES:
patent: 3153229 (1964-10-01), Roberts
patent: 3315103 (1967-04-01), Duff et al.
patent: 3947708 (1976-03-01), Fulenwider
patent: 4092529 (1978-05-01), Aihara et al.
patent: 4160184 (1979-07-01), Ljung
patent: 4193091 (1980-03-01), Kleuters et al.
patent: 4302830 (1981-11-01), Hamaoka et al.

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