| 摘要 |
The object of the invention is to create an improved interferometer which does not require a drive mechanism for moving a reference surface or test specimen in order to tune the interferometer and which can be tuned in virtually vibration-free manner, thereby preventing measuring errors. For this purpose, the interferometer (10) comprises at least one light source, a reference surface (40), a test specimen (50) and at least one beam splitter (30). For vibration-free tuning, the interferometer (10) further contains an apparatus (60, 70) for the polarization of the.interference beams such that, at the output of the interferometer (10), they have different polarization states with respect to each other; and an analyzer (80), disposed at the output of the interferometer (10), with a polarization state variable in predetermined manner, said analyzer (80) - depending on its polarization state - introducing a defined Pancharatnam phase into the interference beams for tuning the interferometer (10).
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