Lens driving system for automatic focusing zone focus camera

Details Lens driving system for automatic focusing zone focus camera Lens driving system for automatic focusing zone focus camera

1988-06-28

1990-03-20

Hix, L. T.

3541951, G03B 708

Patent

active

049105477

ABSTRACT:
A photographic camera in which a lens adjustable in two positions is focused automatically on subjects located within "near" and "far" distance range from the camera. The lens is normally positioned in one of the two positions and movable to the other of the two positions in response to a signal generated by an automatic focusing device upon the detection of the subject location in the focus range to which the other position corresponds, wherein it is characterized that the movement of the lens is automatically controlled by an electromagnetic device.

REFERENCES:
patent: 4504132 (1985-03-01), Martin et al.
patent: 4509840 (1985-04-01), Johnson et al.
patent: 4702583 (1987-10-01), Yoshino et al.

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