Patent
1978-09-27
1980-06-10
Gellner, Michael L.
354 25, 354266, G03B 310, G03B 708
Patent
active
042069904
ABSTRACT:
An automatic focusing camera according to the present invention includes an automatic distant measuring system which generates a signal indicative of a distance between the camera and a target object to be photographed upon receipt of electric power. A focusing mechanism is operatively connected to the automatic focusing system for shifting a movable objective lens automatically to a properly focused position relative to the target object. A shutter release button includes a switch mechanism for electrically connecting a power source and the automatic distance measuring system; and a shaft actuating the focusing mechanism when the shutter release button is pressed down. The switch mechanism in the shutter release button is closed upon application of a finger touch to the shutter release button, either by completion of an electric circuit through the fingertip or by sensing the finger pressure, to supply electric power to the automatic distance measuring system. By this means the automatic distance measuring system is powered to reach a stable operational state prior to the opening of the camera shutter.
REFERENCES:
patent: 3211069 (1965-10-01), Rixton
patent: 3442193 (1969-05-01), Pagel
patent: 3599548 (1971-08-01), Hennig
patent: 3813679 (1974-05-01), Hasegawa et al.
Imura Toshinori
Yamanaka Akira
Gellner Michael L.
Minolta Camera Kabushiki Kaisha
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