| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an optical device which prevents an optical component from being freely moved even if there is a collision or other unintended loads as an optical device which enables an optical component in a sealed housing to be adjusted in position. SOLUTION: This optical device is equipped with a housing 1 containing the optical component arranged movably and rotatably inside. The optical component is magnetically coupled with an outside magnet 17 arranged outside the housing 1 through an inside magnet 14 provided in the optical component. When the outside magnet 17 is rotated, the optical component equipped with the inside magnet 14 moves following the outside magnet 17. The inside magnet 14 is guided in a spiral passage fixed to the housing and even when the magnets are decoupled, the optical component stays at its original position.</p> |
