Patent ID: 8988664
Filing Date: 2015-03-24
Classification: G01S

Abstract:
1. A distance measuring device configured to irradiate an object with light and receive reflected light therefrom to measure a distance from the object, comprising a light source device having at least one light-emitting part, a deflection part being provided rotatably around a predetermined axis line and having plural deflection faces configured to reflect light from the light source device toward the object, a reflection part being provided rotatably around the axis line and integrally with the deflection part and having plural reflection faces being provided to correspond to the plural deflection faces individually and reflecting a portion of light reflected from a corresponding deflection face and reflected from the object, and a light-receiving part having at least one light-receiving element configured to receive light reflected from the reflection part, wherein respective inclination angles of the plural deflection faces with respect to the axis line are mutually different, wherein the light source device emits plural light beams on optical paths separated mutually with respect to at least a direction parallel to the axis line and the number of the at least one light receiving element is less than or equal to the number of the plural light beams, and wherein the inclination angles of the plural deflection faces are set to locate, in a region between optical paths of two light beams on adjacent optical paths among the plural light beams reflected from one deflection face among the plural deflection faces, an optical path of one light beam among the plural light beams reflected from a deflection face other than the one deflection face among the plural deflection faces.