Patent ID: 7583366
Filing Date: 2009-09-01
Classification: G01S

Abstract:
1. A laser rangefinder comprising: connected in series a pulse laser with an optical system, a pulse amplifier and a regulated pulse generator; connected in series a photoreceiver based on an avalanche photodiode with an optical system conjugate to that of the pulse laser, an amplifier of photo-detected signals, a comparator, a time-interval meter, and an object detection indicator; the pulse amplifier having an additional output to which a second laser with an optical system conjugate to that of the first laser and avalanche photodiode is connected, the pulse amplifier having a second input connected to the first input of the pulse amplifier, to the first output of the regulated pulse generator and to the first input of the time-interval meter; a synchronizer with its first output connected to a third input of the pulse amplifier, the third output being connected to a third input of the first comparator, and its input connected to the second output of the regulated pulse generator; a second comparator with its first input connected to the output of the amplifier of photo-detected signals and to the first input of the first comparator, and its second input connected to the second output of the synchronizer; first and second integrators with their inputs connected to the output of the second comparator;