Patent ID: 7382443
Filing Date: 2008-06-03
Classification: G01C

Abstract:
1. A distance measuring method for performing distance measurement by projecting a distance measuring light to an object to be measured and by receiving a reflected light, comprising: a step of projecting for scanning the distance measuring light by splitting the distance measuring light into two or more luminous fluxes with a predetermined spreading angle and by overlapping parts of the luminous fluxes on each other so that the luminous fluxes are lined in a direction perpendicular to a rotating direction; a step of emitting the light by pulsed light emission at least two times during a period when said distance measuring light traverses the object to be measured; a step of measuring a distance by receiving the reflected light at least two times during a period when the distance measuring light traverses the object to be measured; and a step of averaging the results of the distance measurement.