A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 13/15 (2006.01) A61C 5/00 (2006.01)
Patent
CA 2189498
A hand-held light curing device has a light source and a light guiding device having a light receiving opening. A lens arrangement with a focusing lens is positioned between the light source and the light guiding device. The focusing lens has a cut- off filter at a surface thereof. The cut-off filter is preferably vapor- deposited on the surface. Preferably, the focusing lens is a plano- convex lens having a convex surface facing the light source.
Fetherstonhaugh & Co.
Ivoclar Ag
LandOfFree
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