| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a device that can change the distance quickly and widely which a reference light beam travels across. SOLUTION: This interferometer 1 comprises a reference branching paths 5, 105 and measuring branching paths 3, 103. The reference branching paths 5, 105 have two reflecting surface 7, 113 facing each other. The reflecting surface 7, 113 are rotated around rotational shafts 9, 111 while holding their relative arrangement positions.</p> |
