Lens barrel

Details Lens barrel Lens barrel

1990-03-19

1991-10-01

Arnold, Bruce Y.

Optical: systems and elements

Lens

With support

359704, G02B 702, G02B 1500

Patent

active

050527819

ABSTRACT:
A lens barrel comprising an electric motor as the drive source for a first rotary element, a manually operated second rotary element, a plurality of rolling elements in contact with the first and second rotary elements, a mechanism for moving an optical system, and a third rotary element for driving the moving mechanism as it rotates by rotation of the plurality of rolling elements.

REFERENCES:
patent: 3793689 (1988-12-01), Souagi et al.
patent: 4456356 (1984-06-01), Okabe
patent: 4575210 (1986-03-01), Yamada et al.
patent: 4796045 (1989-01-01), Hamanishi et al.
patent: 4890132 (1989-12-01), Hama
patent: 4911533 (1990-03-01), Suzuki et al.

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