Patent ID: 7125129
Filing Date: 2006-10-24
Classification: G02B

Abstract:
1. A mirror support mechanism comprising: a mirror cell provided at the back of a mirror; a plurality of fluid pressure support mechanisms provided between the mirror cell and the mirror and applying support pressure to the mirror by respective containers having their volume changed by fluid pressure; an electromagnetic attracting type actuator including a rod connected to the mirror, a driven member mounted on the rod and driven by electromagnetic force, an electromagnet provided opposite to the driven member, and a container provided between the rod and the mirror cell and having its volume changed by the fluid pressure; a fluid pressure control unit that controls the fluid pressure applied to the respective containers in the plurality of fluid pressure support mechanisms and the fluid pressure applied to the container in the electromagnetic attracting type actuator; and fluid tubes connected to the respective containers in the fluid pressure support mechanisms and to the fluid pressure control unit in such a way as to make the containers communicate with each other.