Lens barrel with selectable manual and auto focus

Details Lens barrel with selectable manual and auto focus Lens barrel with selectable manual and auto focus

1991-06-21

1993-07-20

Gellner, Michael L.

G03B 118

Patent

active

052298000

ABSTRACT:
A lens barrel is provided with a detecting device for detecting whether a clutch device for effecting the AF mode/MF mode changeover of a focus adjusting mechanism is changed over completely to either mode. When the detecting device detects that the changeover is not complete, as due to the supply of electric power from the camera body being cut off, the clutch device is automatically brought to the change-over position of a selected mode in response to the next supply of electric power.

REFERENCES:
patent: 4272174 (1981-06-01), Terramoto et al.
patent: 4413894 (1983-11-01), Miki et al.
patent: 4553817 (1985-11-01), Ando et al.
patent: 4893145 (1990-01-01), Matsuda
patent: 5041885 (1991-08-01), Takezawa et al.

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