A probe assembly for examining a sample, the assembly including a probe, a fiber optic cable for communicating signals to and/or from the probe, an emitter for emitting radiation to irradiate the sample and an electro-magnetic radiation detector for detecting radiation which is transmitted or reflected...http://www.google.fr/patents/US8027709?utm_source=gb-gplus-shareBrevet US8027709 - Radiation probe and detecting tooth decay
