Light curing device
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United States of America Patent
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Apr 4, 2000
Issued Date -
N/A
app pub date -
Jun 17, 1998
filing date -
Nov 17, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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 first and second cut-off filters on proximal and distal surfaces thereof, respectively. The cut-off filters are preferably vapor-deposited on the surfaces. Preferably, the focusing lens has a convex surface facing the light source, and the first filter has reflective properties with respect to infrared light.
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