Control circuit for electronic flash

Details Control circuit for electronic flash Control circuit for electronic flash

1983-10-27

1985-07-23

Moore, David K.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

315156, 315157, 250214B, 354414, 354417, H05B 4132

Patent

active

045310785

ABSTRACT:
A control circuit for timing the duration of a flash of artificial illumination from an electronic flash maintains a substantially uniform amount of artificial illumination regardless of the ambient scene light intensity by detecting the ambient scene light intensity up to the instant that the flash is fired and thereafter subtracting the ambient scene light intensity so detected immediately prior to the flash being fired from the ambient and artificial scene light intensity detected during the flash of artificial illumination.

REFERENCES:
patent: 3591829 (1971-07-01), Murata et al.
patent: 3709123 (1973-01-01), Tokutomi
patent: 4255046 (1981-03-01), Corona
patent: 4266163 (1981-05-01), Lloyd
patent: 4317620 (1982-03-01), Coppa et al.
Anonymous, "Electronic Strobe Flash Apparatus for Automatic Fill-in and Full Flash", Research Disclosure, Nov. 1980, No. 199, Item No. 19912.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-636031