| 摘要 |
<p>The invention relates to an interferometer, comprising at least a beamsplitter (10), an end mirror (11) for returning beams (S2, S3), and a set of mirrors (12, 13, 14, 15) for reflecting the beams (S2, S3) between the beamsplitter (10) and the end mirror (11), at least some of said mirrors (12, 13, 14, 15) being mounted on a rigid structure (17) which is arranged to be rotatable around an axis (A). Said set of mirrors comprises at least one pair of plane mirrors, constituted by two plane mirrors (12, 13), and two angle mirrors (14, 15), constituted by plane mirrors and arranged to deflect a course of the beam (S2, S3) hitting the angle mirror (14, 15) and to direct the beams (S2, S3), guided from the beamsplitter (10) by way of at least one pair of plane mirrors (12, 13) to the angle mirrors (14, 15), to the end mirror (11) and back to the beamsplitter (10).</p> |
