Lens barrel

Details Lens barrel Lens barrel

1988-03-14

1990-03-27

Bovernick, Rodney B.

G02B 704

Patent

active

049115332

ABSTRACT:
A lens barrel includes a stationary tube secured to the inner side of a stationary lens barrel member with a given space kept between them, and a motor disposed within the space. A helicoidal surface is arranged along the inner circumference of the stationary tube to be in screwed engagement with the helicoidal surface of a lens-carrying frame arranged to carry lenses which are shiftable in the direction of their optic axis, and a connecting member extends to the inner circumference of the stationary tube to cause the rotation of a rotary tube which has a toothed part engaging the output gear of the motor to be transmitted to the lens-carrying frame.

REFERENCES:
patent: 4519691 (1985-05-01), Yamada et al.
patent: 4560237 (1985-12-01), Ohkura et al.
patent: 4730901 (1988-03-01), Suzuki et al.
patent: 4749269 (1988-06-01), Nakashima et al.
patent: 4779964 (1988-10-01), Ozawa et al.

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