Three-dimensional measurement device and three-dimensional measurement method

Abstract

The purpose of the present invention is to realize a compact three-dimensional measurement device of high resolution. In the present invention, a pulse light is projected on an object, the light reflected from the object is received by a solid state area sensor having a plurality of photoelectric conversion elements, the area sensor is controlled with a timing synchronized with the projection of the pulse light, and the distance to each photoelectric conversion element is measured based on the output of the solid state area sensor.

1 . A three-dimensional measurement method for measuring a distance to a plurality of positions on an object by projecting light and receiving light reflected from the object, said three-dimensional measurement method comprising the steps of: 
 projecting a pulse light on an object;    receiving light reflected from the object by an area sensor comprising a plurality of photoelectric conversion elements;    controlling the active/inactive timing of the area sensor such that the photoelectric conversion elements are exposed to light with a timing synchronously with the pulse light projection; and    measuring the distance to each photoelectric conversion element based on the output of the area sensor.    
     
     
         2 - 19 . (canceled)