Optical apparatus provided with a driving unit for moving a lens

Details Optical apparatus provided with a driving unit for moving a lens Optical apparatus provided with a driving unit for moving a lens

1994-02-22

1996-11-05

Epps, Georgia Y.

Optical: systems and elements

Lens

With support

359823, 359687, G02B 702, G02B 1514

Patent

active

055723721

ABSTRACT:
An optical apparatus is provided with a lens unit movable in the direction of the optical axis thereof, a lens barrel, an electromagnetic coil coupled to one of the lens unit and the lens barrel, a driving unit having a magnetic material coupled to the other of the lens unit and the lens barrel, and a guide for slidably guiding the lens unit relative to the lens barrel.

REFERENCES:
patent: 4353634 (1982-10-01), Himmelsbach
patent: 4534624 (1985-08-01), Toda et al.
patent: 4615585 (1986-10-01), Van Sluys
patent: 4639084 (1987-01-01), Kugioka
patent: 4676605 (1987-06-01), Toda
patent: 4749269 (1988-06-01), Nakashima et al.
patent: 4785210 (1988-11-01), Maruyama
patent: 4859042 (1989-08-01), Tanaka
patent: 4920369 (1990-04-01), Kaneda et al.
patent: 5134524 (1992-07-01), Hamano
patent: 5289318 (1994-02-01), Sekine et al.

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