| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical scanner having a holder configured to be easily restored to maintain the position and the direction of a light-emission surface of a light-emitting device with high accuracy even if the holder is deformed by an external force applied to the holder holding the light-emitting device or the like.SOLUTION: A bottom plate 121a of a holder 121 are fastened at two points to securely position the holder 121, a semiconductor laser 101, collimator lens 103, and a concave lens 104. The bottom plate 121a is fastened at only two points, thereby reducing shape retainability of the bottom plate 121a at the fastening points and intentionally permitting a portion of a circular hole 121f of the bottom plate 121a to be displaced to a predetermined amount so as not to excessively press the bottom plate 121a. When no external force is applied, the bottom plate 121a is easily restored. |
