Patent ID: 7190523
Filing Date: 2007-03-13
Classification: G02B

Abstract:
1. A wavelength-tunable optical filter, comprising: a stationary mirror, a movable mirror disposed so as to face the stationary mirror, an actuating plate for actuating the movable mirror, and a peripheral supporting portion supporting the actuating plate, the peripheral supporting portion and the actuating plate being disposed above a base layer, wherein the movable mirror is displaced by applying a voltage between electrodes provided on the actuating plate and the base layer, the actuating plate is disposed circumferentially around the movable mirror with a first opening between the actuating plate and the movable mirror and a second opening between the actuating plate and the peripheral supporting portion, and the actuating plate and the movable mirror are connected by a plurality of spaced apart first connecting portions spanning the first opening, and the actuating plate and the peripheral supporting portion are connected by a plurality of spaced apart second connecting portions spanning the second opening.