US Patent:
20040090794, May 13, 2004
Inventors:
Scott Ollett - Wake Forest NC, US
Ross Lampe - Raleigh NC, US
International Classification:
F21V007/04
US Classification:
362/555000, 362/580000, 362/573000, 362/800000, 362/230000
Abstract:
A method and apparatus for curing photosensitive materials uses LEDs and an optical concentrator to generate high optical power intensities. An LED array, comprising a plurality of LED assemblies, generates collimated light. A collection lens functions as an optical concentrator and focuses the collimated light to a desired spot size at a desired location. The LED assemblies may be at least partially disposed in a cooling plenum, where the cooling plenum is at least partially defined by the collection lens. Each LED assembly within the LED array may be detachably coupled to a mounting surface, enabling easy replacement of individual LED assemblies within the LED array. The photocuring assembly may also include a redirecting assembly disposed between the collection lens and the desired location that may further concentrate the light at the desired location. The photocuring assembly may include more than one of the above features.