Three-dimensional image measuring device

A three-dimensional image measuring device comprising:

• a hologram adapted for multi-exposure such that when reproduced light is irradiated, a plane light image is formed at a plurality of different positions located at a depth direction in accordance with a position of a reproduced light source;
• a plurality of light sources disposed at a plurality of different positions for irradiating the reproduced light on the hologram;
• light source turning-on control means for imaging the plane light image at positions in the depth direction according to positions of each of turned-on light sources by sequentially turning on the plurality of light sources one by one;
• an object to be measured being disposed in a space where the plane light image is formed;
• light receiving means including a plurality of two-dimensional-arranged light receiving elements for sequentially measuring the strength of scattered light of the plane light image imaged on a surface of the object as each of the light sources is turned on by the light source turning-on control means;
• and
• distance measuring means for measuring the distance to the object based on an output of each light receiving element of the light receiving means.