Radiant energy – Irradiation of objects or material
Reexamination Certificate
2005-04-19
2005-04-19
Nguyen, Kiet T. (Department: 2881)
Radiant energy
Irradiation of objects or material
C250S50400H
Reexamination Certificate
active
06881964
ABSTRACT:
A UV spot curing lamp assembly comprises an integral filter support and shutter stop mechanism. The assembly includes a UV lamp and a light guide spaced therefrom for receiving filtered light from the lamp and for directing light through the light guide to a selected target or work site for curing materials thereat. A filter plate in the form of a borosilicate glass, having a selected thickness for the particular application, is disposed in relatively close proximity to the entrance surface of the light guide. A movable shutter plate, having an opening therethrough, is disposed between the filter and the light guide entrance surface. The shutter is movable from a first position wherein the opening is in registry with the light guide entrance surface to receive light from the lamp to a second position wherein a solid portion of the shutter plate blocks light from being received by the light guide entrance surface. Effective cooling of the lamp assembly is provided by a fan by which forced air is drawn over the lamp and the integral filter support and shutter stop, and by an internal mounting system configured to direct the drawn air for effective convective heat dissipation.
REFERENCES:
patent: 5521392 (1996-05-01), Kennedy et al.
patent: 5803729 (1998-09-01), Tsimerman
patent: 5843143 (1998-12-01), Whitehurst
patent: 5905268 (1999-05-01), Garcia et al.
patent: 6413268 (2002-07-01), Hartman
Bauman Steven C.
Henkel Corporation
Nguyen Kiet T.
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