Automatic focusing device

Details Automatic focusing device Automatic focusing device

1985-01-18

1986-03-11

Perkey, William B.

G03B 310

Patent

active

045752109

ABSTRACT:
An automatic focusing device comprises a motor operated by a range signal, a lens moving system in which a lens is moved by the motor, a clutch for engaging and disengaging the motor from the lens moving system and a power switch for the motor. A switchover member is provided which is selectively settable to a manual mode, and auto-focus mode and a focus-lock mode. The modes are changed over by a combination of an engagement or disengagement of the clutch by the switchover member and a switchover of the power switch (between ON and OFF) by the switchover member.

REFERENCES:
patent: 4319820 (1982-03-01), Ostrowski et al.

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