DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To achieve a distance measuring device capable of performing appropriate distance estimation despite of subject distances largely different depending on the cases.SOLUTION: A distance measuring device comprises: an imaging lens 1 that allows incident of object light from a subject; a lens array 2 on which the object light transmitted through the imaging lens 1 is made incident; an imaging element 5 that receives the light passed through the lens array 2, and outputs image information; and an arithmetic device 6 that performs estimation of a distance to the subject. The lens array 2 is formed by two-dimensionally arraying microlenses 3 variable in focal distance; the imaging element 5 has a plurality of light-receiving elements corresponding to each of the microlenses 3; and the arithmetic device 6 performs distance estimation on the basis of the image information.