Lens barrel

Details Lens barrel Lens barrel

1991-08-29

1993-07-27

Arnold, Bruce Y.

Optical: systems and elements

Lens

With variable magnification

359696, 359704, G02B 1514

Patent

active

052314731

ABSTRACT:
A lens barrel of a camera includes a driving power source, a plurality of lenses mounted in the barrel, and a plurality of reference shafts extending parallel to an optical axis. At least one of the reference shafts is provided with a threaded portion and used as a rotating shaft of the driving power source. A recess and a protrusion are also provided for preventing deflection of a body of the driving power source, so that the lens moves to and fro along the threaded portion upon activation of the driving power source.

REFERENCES:
patent: 3610733 (1971-10-01), Back
patent: 4008951 (1977-02-01), Himmelsbach
patent: 4353634 (1982-10-01), Himmelsbach
patent: 4749268 (1988-06-01), Moskovich et al.
patent: 4764784 (1988-08-01), Torikoshi et al.
patent: 4767200 (1988-08-01), Inaba et al.
patent: 5016993 (1991-05-01), Akitake
Lens Barrel for Zoom Lens, vol. 10, No. 7 (p. 419) Jan. 11, 1986, Kazuo Tanji (author) (abstract only).

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