| 摘要 |
The present invention relates to an interferometer and an optical device using the same. Conventional optical devices have the disadvantage that interference patterns are not clear and there is a restriction between a light source and the interferometer, and as a result, there has been a need for a precise control device. The present invention accordingly achieves an improvement in controlling a wave plate of an interferometer so that the amplitude of an object beam which is split by a polarization beam splitter and the amplitude of a reference beam can be asymmetric to each other and thus the brightness of interference patterns can be adjusted. Further, the present invention uses a tunable laser as a light source of an optical device and adopts a frequency scanning method, to thereby prevent restrictions between the light source and the interferometer. The interferometer and optical device according to the present invention comprise: a wave plate for controlling the polarization direction of linearly polarized light incident to a polarization beam splitter; the polarization beam splitter; a wave plate for converting the polarization beam such that the object beam and the reference beam may be interfered in an image pick-up device; and a polarizer. |
