Patent ID: 7145712
Filing Date: 2006-12-05
Classification: B81B,B81C,G02B,Y10S

Abstract:
1. A micro mirror unit comprising a moving part, a frame and a torsion bar connecting the moving part to the frame, wherein the moving part, the frame and the torsion bar are formed integral from a common material substrate having a layered structure including an intermediate layer and silicon layers sandwiching the intermediate layer, wherein the moving part includes: a first intermediate portion originating from the intermediate layer; a first structural member held in contact with the first intermediate portion and provided with a mirror portion; and a second structural member held in contact with the first intermediate portion on a side opposite to the first structural member; wherein the frame includes: a second intermediate portion originating from the intermediate layer; a third structural member held in contact with the second intermediate portion on a same side as the first structural member; and a fourth structural member held in contact with the second intermediate portion on a same side as the second structural member; and wherein the third structural member extends beyond the first structural member in a layering direction of the layered structure.