Driving device

Details Driving device Driving device

1991-07-01

1993-07-06

Dzierzynski, Paul M.

Optical: systems and elements

Lens

With support

359823, 310311, 310320, 3541951, 35419511, 369 4411, 369 4414, G02B 702

Patent

active

052259412

ABSTRACT:
A driving device includes a driving member which is frictionally engaged with a driven member or a member coupled to the driven member and which is movably supported on a fixed member, a piezoelectric element disposed in contact with the driving member, and a driving circuit for applying a voltage to the piezoelectric element so as to make the speed of expansion of the piezoelectric element different from the speed of contraction thereof.

REFERENCES:
patent: 4291958 (1981-09-01), Frank et al.
patent: 4302830 (1981-11-01), Hamaoka et al.
patent: 4303324 (1981-12-01), Marcus
patent: 4423941 (1984-01-01), Iwata et al.
patent: 4676605 (1987-06-01), Toda et al.
patent: 4894579 (1990-01-01), Higuchi et al.
patent: 4897589 (1990-01-01), Fujiwara et al.
patent: 4920369 (1990-04-01), Kaneda et al.
patent: 5150260 (1992-09-01), Chigira

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