Optical system for a dental handpiece for polymerization of...

Dentistry – Apparatus – Having means to emit radiation or facilitate viewing of the...

Reexamination Certificate

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Reexamination Certificate

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06857873

ABSTRACT:
An optical system for the polymerization of photosetting compounds or resins is described. The optical system includes a LED mounted on a heat dissipater inside the body of a dental handpiece and an optical fibre or light guide mounted at the top of the handpiece to convey and emit at, its output end, the light emitted by the LED so as to direct it onto the area in which the photosetting compound or resin is to be polymerized. The system also includes an optical element or optical conveyor able to couple the LED with the optical fibre to convey the light beam emitted by the LED toward the input of the optical fibre, said optical element being of such a shape as to minimize dispersion of the light beam emitted by the LED thereby acting as a light beam concentrator.

REFERENCES:
patent: 5030090 (1991-07-01), Maeda et al.
patent: 6159005 (2000-12-01), Herold et al.
patent: 6419483 (2002-07-01), Adam et al.
patent: 6611110 (2003-08-01), Fregoso
patent: 20030036031 (2003-02-01), Lieb et al.
patent: 0798788 (1997-01-01), None
patent: WO 0164129 (2001-07-01), None

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