Control system for an electronic flash unit

Details Control system for an electronic flash unit Control system for an electronic flash unit

1988-01-20

1988-10-11

Perkey, W. B.

35412712, G03B 1505

Patent

active

047775076

ABSTRACT:
A flash charge related signal which indicates that there is inadequate flash energy to fire an electronic flash device is provided during flash-charging, until the elapse of a predetermined fraction of the last-measured full charge time for the flash device. The predetermined fraction determines a lesser charge time sufficient to ensure adequate (not full) flash energy for the next flash firing. Thus, the charging time perceived by the photographer always appears shortened to the lesser time, even though the flash device is not fired until it is fully charged. Moreover, the waiting time to fire the flash device can be shortened by relying on the lesser time.

REFERENCES:
patent: 2856562 (1958-10-01), Grimm
patent: 4239361 (1980-12-01), Harvey
patent: 4258991 (1981-03-01), Kuraishi
patent: 4259615 (1981-03-01), Kashihara et al.
patent: 4464039 (1984-08-01), Ishida
patent: 4472041 (1984-09-01), Carcia et al.
patent: 4501481 (1985-02-01), Kataoka et al.
patent: 4540265 (1985-09-01), Harvey
patent: 4544254 (1985-10-01), Egawa et al.

Affiliated with

Also associated with

Rating

Control system for an electronic flash unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control system for an electronic flash unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for an electronic flash unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1960956