| 摘要 |
PROBLEM TO BE SOLVED: To enhance the range-finding accuracy or an automatic focusing camera. SOLUTION: The range-finding device constituted so that the distance to a subject is obtained by projecting a measuring beam toward the subject from a light projection means, receiving the beam reflected on the subject by a light receiving means C consisting of plural light receiving elements and calculating the position of the centroid of the reflected beam, is maintained highly accurately. In the range-finding device, such a possibility that a wane part (d) is caused at the end part of the reflected beam BM of the light receiving elements C1-C11 and the position of the centroid of the reflected beam is deviated is caused. However, the precise subject distance is obtained by correcting the position of the centroid by using correction data Dc after it is judged whether the wane part (d) exists or not and the position of the wane part (d) is decided. |
