A laser range finding apparatus comprises a pulse laser (11), a light deflecting device, a photodetector arrangement (22) having an opto-electronic photodetector (23) and also an electronic control and evaluation system (10) in which a sensing signal representative for the range of an object is determined...http://www.google.fr/patents/US5949530?utm_source=gb-gplus-shareBrevet US5949530 - Laser range finding apparatus