Lens barrel

Details Lens barrel Lens barrel

1995-11-13

1999-12-14

Metjahic, Safet

Photography

Having variable focal length of camera objective

Manually selected preset zoom position or range

396 72, G03B 310

Patent

active

060028866

ABSTRACT:
A lens barrel includes an external operation member for manual operation, a driving source, a movable lens supported movably along an optical axis, a lens moving mechanism arranged to receive a movement of the external operation member and move the movable lens at least along the optical axis and to receive a motion of the driving source and move the movable lens at least along the optical axis, and a switching mechanism for varying a ratio of the amount of the movement received from the external operation member to the amount of movement of the movable lens.

REFERENCES:
patent: 4560263 (1985-12-01), Katsuma et al.
patent: 4763148 (1988-08-01), Tsukimoto et al.
patent: 4962399 (1990-10-01), Numako et al.
patent: 5148199 (1992-09-01), Kohomoto et al.
patent: 5172149 (1992-12-01), Sekiguchi et al.
patent: 5177524 (1993-01-01), Tahaka
patent: 5223980 (1993-06-01), Hamasaki
patent: 5305036 (1994-04-01), Tanaka

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