Driving mechanism for a camera lens

Details Driving mechanism for a camera lens Driving mechanism for a camera lens

2006-12-05

2006-12-05

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With support

C359S823000, C359S696000

Reexamination Certificate

active

07145738

ABSTRACT:
A camera lens drive mechanism includes a lens cylinder, and the lens hollow is able to fit over a lens. A conductor coil is wound around an outer surface of the lens cylinder, and a coil spring is surrounding the lens hollow cylinder. A magnetic body is opposite to the conductor coil for the magnetic line of force from the magnet can cut across the conductor coil. An active force is induced on the coil when a current is conducted in the conductor coil, and then the lens cylinder is pushed also. The magnitude of the active force can be controlled by adjusting the magnitude of the current in the conductor coil.

REFERENCES:
patent: 4626077 (1986-12-01), Yamamoto
patent: 4634221 (1987-01-01), Hopfner
patent: 4750821 (1988-06-01), Yamamoto et al.
patent: 4793689 (1988-12-01), Aoyagi et al.
patent: 4828360 (1989-05-01), Maruyama
patent: 5138497 (1992-08-01), Blanding
patent: 5220461 (1993-06-01), Inoue et al.
patent: 5499143 (1996-03-01), Sakamoto et al.

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