A light-weight, portable photocuring device possesses a single light emitting diode (LED). The single LED backed with a heat sink is driven by a driving circuit and controlled by a timing circuit. A temperature monitor can be included in a closed loop to feed back and control the driver. Lenses and/or...http://www.google.se/patents/US7535184?utm_source=gb-gplus-sharePatent US7535184 - Photopolymerization apparatus
