AUTOFOCUSING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide the autofocusing device of a light beam with which the optical axis of an objective lens is easily adjusted by swinging an entire movable part. SOLUTION: The relative abutting part of the spherical part 11a of a fixed member 11 and the tapered surface 36a of a receiving member 36 abutting with each other is changed so as to swing the entire movable part, and thus the optical axis of the objective lens 2 is easily adjusted.