Patent ID: 7679728
Filing Date: 2010-03-16
Classification: G01C,G01S

Abstract:
1. A distance measurement system comprising a laser light source, a plurality of distance detectors arranged on a path that is formed as either a serial structure, a tree-shaped structure or a radial array in the space starting from the laser light source, a photodetector for detecting the light returned through the path, and a distance measuring apparatus for measuring the distance between the laser light source and each distance detector by analyzing the light detected by the photodetector, wherein each of the distance detectors returns part of the input light from a starting point side distance detector to the starting point side distance detector by reflection or both reflection and refraction, sends the remaining part of the light to a forefront side distance detector by transmission, reflection, refraction or a combination thereof, and returns the light returning from the forefront side distance detector to the photodetector through the starting point side distance detector by transmission, reflection, refraction or a combination thereof.