Optical: systems and elements – Lens – With variable magnification
Patent
1993-12-21
1995-05-30
Ben, Loha
Optical: systems and elements
Lens
With variable magnification
359698, 359699, 359823, 35419512, 354402, G02B 1514
Patent
active
054207215
ABSTRACT:
A lens barrel which can be easily switched between a manual focusing mode and an auto-focusing mode employs a motor as a drive power source for driving a switching apparatus for switching between an auto-focusing apparatus and a manual focusing apparatus. When a photographer supplies an external electrical signal, a switching operation from the auto-focusing apparatus to the manual focusing apparatus and vice versa can be performed in accordance with the forward/reverse rotational direction of the motor.
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patent: 4925282 (1990-05-01), Kanno et al.
patent: 4985723 (1991-01-01), Egawa et al.
Fukino Kunihiro
Kanno Hideo
Kodaka Yoshiro
Naito Hideshi
Ben Loha
Nikon Corporation
Phan James
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