| 摘要 |
PROBLEM TO BE SOLVED: To obtain an image signal capable of performing both distance measurement for a wind measurement range and distance measurement having high resolution when spatial resolution is maintained.SOLUTION: An imaging device comprises: an imaging lens 7 for condensing light from a subject A; an imaging element 10 for imaging the light condensed by the imaging lens 7 to detect an image signal; and a micro lens array 9 arranged between the imaging element 10 and the imaging lens 7 so as to be spaced from a focal surface of the imaging lens 7 in an optical axis direction. The micro lens array 9 is formed so that a plurality of micro lens each for condensing incident light to form an image on an imaging surface of the imaging element 10, the micro lens including two or more types having the same focal distance and different effective diameters, are arranged in a direction crossing the optical axis in an array shape. |
