| 摘要 |
An optical element (40) includes a substrate (10), a magnetostrictive film (11) which is arranged on the substrate, a film thickness of the magnetostrictive film varying in accordance with intensity of a magnetic field, and a reflection film (15) which is arranged on the magnetostrictive film (11) and reflects light. An optical apparatus includes a stage (41) including a holder (141) for carrying the optical element (40), provided with a plurality of holes arranged in a carrying surface thereof for carrying the optical element, a plurality of magnetic field generation parts (61) embedded in the plurality of holes of the holder (141), and a control mechanism (150) for controlling the magnetic field generated by each of the plurality of magnetic field generation parts (61), and controlling the film thickness of the magnetostrictive film (11) of the optical element (40). |
