Patent ID: 8944598
Filing Date: 2015-02-03
Classification: A61B,G02B,H02N

Abstract:
1. An actuator, which is formed in a substrate including a handle layer, an elastic body layer, and an insulating layer sandwiched between the handle layer and the elastic body layer, the actuator comprising: a support portion; a movable portion supported to the support portion by an elastic body; a movable comb electrode formed on the movable portion; a fixed comb electrode supported by the support portion; and electrode wirings connected separately to the movable comb electrode and the fixed comb electrode, wherein the elastic body supports the movable portion in such a manner that the movable portion is displaceable in a direction perpendicular to a surface of the substrate in accordance with voltages applied to the movable comb electrode and the fixed comb electrode, wherein the movable comb electrode, the fixed comb electrode, and the support portion are each made up of the handle layer, and the elastic body is made up of the elastic body layer, wherein the handle layer is provided with a handle layer separation groove for electrically separating the handle layer of the movable comb electrode from the handle layer of the support portion supporting the fixed comb electrode, and wherein the actuator further comprises a structure reinforcing portion having an insulating property and provided across the handle layer separation groove.