Videoendoscope including a distal endpiece, a laser source generating a laser beam and an optical formation device arranged to produce from the laser beam a calibrated light spot near a target of which the size is to be measured, wherein the laser source is housed in a distal endpiece, while the optical...http://www.google.com.tw/patents/US7556599?utm_source=gb-gplus-share專利 US7556599 - Device for metrology by laser mapping for a videoendoscopic probe
