| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical device capable of controlling the drive of an optical element using electrocapillarity by a simple driving circuit when controlling the drive of the optical element, accurately controlling the optical power in a short time and capable of driving with a small power. SOLUTION: The optical device with the optical element whose optical property is changed in accordance with a change in a surface shape when a voltage is applied is provided with a power feeding means for applying a prescribed AC voltage on an electrode arranged in the container so as to change the surface shape, and an apply voltage control means for controlling the apply voltage, and the duty factor of the AC voltage is controlled by the apply voltage control means, and the surface shape is changed by controlling the duty factor. |
