Title: Automatically controlled exposure indicating device for a camera

Abstract: A camera is provided with a multi-exposure control system for obtaining proper exposure by either preselecting the diaphragm or the shutter speed and then respectively automatically controlling the shutter speed or the diaphragm aperture in accordance with the intensity of scene light passing through the diaphragm aperture. Structure is provided for obtaining a proper exposure by causing the diaphragm to be either fully opened or at its smallest aperture where with a preselected shutter speed an intermediate diaphragm aperture is not satisfactory. The exposure indicating device obtains an output voltage from an output circuit for computing exposure control voltages in response to step members representing steps of the diaphragm for stopping-down the diaphragm from its fully opened condition to a preselected value so that the output represents the shutter speed to be controlled with the preselected diaphragm aperture.

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Inventors: Matsuda, Motonobu (Izumi, JA)
Beppu, Norio (Sennan, JA)

Application Number: 589859
Filing Date: 1975-06-24
Publication_date: 1977-08-16
Assignee: Minolta Camera Kabushiki Kaisha (Osaka, JA)
Primary Class(es): 396/242 396/287, 396/293
Other Classes:
US Patent Ref:

3554104	Jan, 1971	Winkler	354/39.
3593629	Jul, 1971	Rentschler	354/29.
3605590	Sep, 1971	Kitai	354/39.
3626825	Dec, 1971	Years	354/26.
3645181	Feb, 1972	Reiche et al.	354/39.
3871005	Mar, 1975	Uchida et al.	354/38.
3896472	Jul, 1975	Yoshiyama et al.	354/38.

Other Refs:
Primary Examiner: Hix, L. T.
Assistant Examiner: Miska, Vit W.
Attorney: Watson, Cole, Grindle & Watson