Photography – Having variable focal length of camera objective – Having focus operation
Patent
1997-04-23
1999-04-27
Perkey, W. B.
Photography
Having variable focal length of camera objective
Having focus operation
396 87, 396349, G03B 1700
Patent
active
058972277
ABSTRACT:
A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.
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Camera and Lens.
Haraguchi Keisuke
Kobayashi Takeo
Kohmoto Shinsuke
Kondoh Shigeru
Numako Norio
Asahi Kogaku Kogyo Kabushiki Kaisha
Perkey W. B.
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