Flash triggering system

Details Flash triggering system Flash triggering system

1994-11-23

1995-07-25

Pascal, Robert J.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315241S, 315200A, 315129, 254129, H05B 3700

Patent

active

054365317

ABSTRACT:
A flash triggering system inductively coupled to a flash tube assembly's flash tube of a through-the-lens (TTL) strobe unit. The flash trigger monitors the electromagnetic field directly surrounding the strobe to which it is affixed using an electromagnetic inductive sensor. The photographic flash trigger is positioned by the mounting mechanism adjacent the flash tube so that the flash monitor detector is responsive to the excitation of a flash tube. The detector provides a detection signal indicative of whether or not the flash tube properly fired. A delay circuit delays any response for a predetermined time to allow for the main TTL flash cycle. Then, the activation circuit enables a separate transmitter to trigger the slave strobes while the camera shutter is still open.

REFERENCES:
patent: Re28100 (1974-08-01), Long
patent: 3487221 (1969-12-01), Frank
patent: 3601652 (1971-08-01), Burnett, Jr.
patent: 3626401 (1971-12-01), Flieder et al.
patent: 3662168 (1972-05-01), Pelino et al.
patent: 4234967 (1980-11-01), Henschel
patent: 4701672 (1987-10-01), Sikora

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