| 摘要 |
PROBLEM TO BE SOLVED: To realize an optical distance measurement device in which the performance of detecting a measurement object, especially a measurement object located far away or a measurement object having low reflectance, is heightened.SOLUTION: An optical distance measurement device includes: a light projection unit for projecting an irradiation light pulse to a measurement object; a light-receiving unit disposed on an image formation plane where the image of a reflected light pulse reflected by the measurement object is formed and having a plurality of light-receiving pixels for receiving the reflected light pulse; a selection unit for selecting light reception signals outputted from a pixel of interest and one or a plurality of pixels in its vicinity from among a plurality of light reception signals outputted from each of the plurality of light-receiving pixels, and outputting the selected light reception signals as a plurality of individual light reception signals; a composition unit for outputting a composite light reception signal in which the plurality of individual light reception signals are added together; and a distance calculation unit for calculating a flight time that is a difference between the projected time of an irradiation light pulse corresponding to the pixel of interest and the received time of the reflected light pulse using the composite light reception signal, and calculating the distance to the measurement object on the basis of the flight time.SELECTED DRAWING: Figure 6 |
