Electronic flash and a camera provided with the same

Details Electronic flash and a camera provided with the same Electronic flash and a camera provided with the same

1997-05-29

1999-06-15

Adams, Russell

Photography

With object illumination for exposure

With power supply detail

396301, G03B 1505, G03B 1718

Patent

active

059130857

ABSTRACT:
An electronic flash is provided with a detector for detecting a voltage of a power source when a charging of a capacitor is started, a timer for measuring an elapsed time from the start of the charging, a memory for storing a relationship between control times and voltages of the power source, and a controller for setting a control time based on a detected voltage and the stored relationship, and controlling stop of the charging in accordance with the set control time and measurement of the timer. This can prevent excessive charging without unnecessarily making the capacitor larger.

REFERENCES:
patent: 4751545 (1988-06-01), Iguchi
patent: 5194889 (1993-03-01), Ogawa

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