Photography – Having variable focal length of camera objective – Having focus operation
Patent
1999-05-13
2000-09-26
Perkey, W. B.
Photography
Having variable focal length of camera objective
Having focus operation
396132, 396448, G03B 1334, G03B 1700
Patent
active
061252379
ABSTRACT:
Disclosed is a device and method for opening and closing a barrier in a zoom camera. The device includes a connection lever fixed to a lens barrel of a focus lens group and rotated by the transmission of a rotational power of a focusing motor; and a barrier driving unit including a barrier driving lever contacting the connection lever to receive rotational force of the connection lever and a ring portion for pushing sector pins of barrier sectors in a direction to close the barrier sectors. The method includes the steps of determining if a power switch has been turned ON in an initialized state; opening barrier sectors by operating a barrier driving unit according to operating signals of a control unit if it is determined that the power switch has been turned ON; protecting a lens of the zoom camera by closing the barrier sectors or retracting a movable lens barrel in a state where the barrier sectors are open if it is determined that a first release switch has not been turned ON during a first or second predetermined interval of time, respectively; and performing photographing according to operating signals of the first release switch and a second release switch.
REFERENCES:
patent: 4876563 (1989-10-01), Ishida et al.
patent: 5892998 (1999-04-01), Kodaira et al.
patent: 5993078 (1999-11-01), Nomura et al.
patent: 6036377 (2000-03-01), Nomura et al.
Perkey W. B.
Samsung Aerospace Industries Ltd.
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