1979-02-27
1980-06-03
Hix, L. T.
354195, G03B 300, G03B 708
Patent
active
042059062
ABSTRACT:
An auto-focus camera includes a first signal circuit for generating a first control signal only when the battery voltage exceeds a minimum permissible level for normal operation of an electric range finder and an exposure control circuit, and a second signal circuit for generating a second control signal only when the range finder has reached a stable operating state after commencement of electric power supply thereto. The existence of both the first and second control signals enables an electromagnet provided in an exposure control circuit for arresting the camera shutter in an open state to hold an engaging member out of the locus of movement of a corresponding engaging member provided on a trigger member. The trigger member can be manipulated to a terminal position for allowing operation of a focus adjusting device unless the engaging members engage one another, and the range finder is supplied with electric power from the battery during the course of the manipulation of the trigger member. The camera shutter is opened in response to the termination of the automatic focus adjustment.
REFERENCES:
patent: 3442193 (1969-05-01), Pagel
patent: 3875580 (1975-04-01), Watanabe et al.
patent: 4031383 (1977-06-01), Hosoe et al.
Hix L. T,.
Minolta Camera Kabushiki Kaisha
Tarcza Thomas H.
LandOfFree
Auto-focus camera circuitry does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Auto-focus camera circuitry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auto-focus camera circuitry will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-713854