Patent ID: 10274723

Abstract:
Provided is a technology that realizes a variable shape mirror using an actuator having a comb electrode structure, which can be relatively easily manufactured and displaced in two (±) directions perpendicular to a mirror reference plane. A variable shape mirror (100) includes: a mirror base (111) including a reflective surface (110); and an actuator (101) including a first actuator and a second actuator. Each of the plurality of actuators is connected to the mirror base via a connecting portion (121). The first actuator has a first electrode pair (104, 105) of a comb electrode structure for displacing the connecting portion in a first direction perpendicular to the reflective surface. The second actuator has a second electrode pair (108, 109) of a comb electrode structure for displacing the connecting portion in a second direction opposite to the first direction, the second electrode pair being separately formed from the first electrode pair.