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Demetron Research Corporation

Brian Dell

Joshua Friedman

The optical light guide of the present invention is composed of a solid, transparent material selected from the class consisting of glass, acrylic, polystyrene, and polycarbonate. The light guide has a head, a tapered section and a curved section. The head has a light-receiving, concave surface geometry at the proximal end of the light guide.

Optical light guide for dental light-curing lamps

A compact, lightweight source of radiation at wavelengths ranging from long wave ultraviolet through the visible powered from a low power DC source wherein a high frequency oscillator provides regulated driving current for the excitation of a fluorescent tube which emits energy at wavelengths outside the erythemal zone and wherein a first level of energizing current is provided for a warmup of the tube, a second level of energizing current is provided for standby excitation and a third level of energizing current is available for more intense operating excitation during which time there is also provided an audible timing signal.

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Waterbury, CT, United States of America

Brian Dell