An illuminator for irradiating targets to change their properties comprises at least one LED having spectral properties that are capable of interacting with a target to effect changes in its properties, a non-imaging concentrator for collecting radiation from the LED and emitting it as a spatially and...http://www.google.se/patents/US20070053199?utm_source=gb-gplus-sharePatent US20070053199 - LED illuminator for changing target properties
