Photographic flash apparatus with multiple units

Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

315150, 354132, H05B 3702, G03B 1503

Patent

active

039809234

ABSTRACT:
Photographic flash apparatus having one flash unit which may be called the main or master or primary flash unit, and one or more additional flash units which may be called secondary or slave or dependent units. Eliminating connecting cables often used in the prior art, and also eliminating ratio frequency controls sometimes used in the prior art relating to multiple units, the secondary or dependent units of the present invention are independently powered and are triggered to initiate a flash by the light from the flash of the main unit, and triggered to terminate or discontinue the flash in each dependent unit when the flash in the main unit turns off. The control of each secondary unit is entirely by means of the flash of light from the main unit. The apparatus is particularly useful in studio lighting where it is desired to illuminate the subject being photographed from a plurality of different directions.

REFERENCES:
patent: 3156827 (1964-11-01), Porteous et al.
patent: 3288044 (1966-11-01), Bramer
patent: 3714443 (1973-01-01), Ogawa
patent: 3809954 (1974-05-01), Engelstatter

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Photographic flash apparatus with multiple units does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photographic flash apparatus with multiple units, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic flash apparatus with multiple units will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1028605

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.