Electronic flash apparatus for reducing the incidence of...

Details Electronic flash apparatus for reducing the incidence of... Electronic flash apparatus for reducing the incidence of...

G - Physics

03

B

240/76, 95/46.1

G03B 15/05 (2006.01) H05B 41/32 (2006.01)

Patent

CA 2029474

Electronic flash apparatus is provided that is capable of reducing the incidence of eyelid closure of a subject during an exposure interval when the subject is illuminated with visible light from the electronic flash apparatus immediately prior to the exposure interval. The electronic flash apparatus includes a visible light flash tube and an electrical circuit coupled thereto for controlling flash tube energization and de-energization immediately prior to and during an exposure interval. The electrical circuit includes apparatus for coupling the flash tube to a suitable source of electrical energy and for applying a trigger signal to the flash tube in order to illuminate the subject with a finite amount of visible light immediately prior to an exposure interval that will not cause the eyelids of the subject to blink in response thereto during the exposure interval.

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