Patent ID: 8179582

Claim:
A micro electro mechanical device comprising: an inner frame provided with a movable part; an outer frame provided in a circumference of the inner frame with a frame opening formed between said inner frame and said outer frame, and having a fixing part being fixed by a joining material; a first torsion bar connecting outer frame and said inner frame by extending through said frame opening to support said inner frame on said outer frame so that said inner frame can swing relative to said outer frame; and a first opening formed in said outer frame in a vicinity of the first torsion bar, wherein the first opening is positioned between said fixing part of said outer frame and said frame opening through which said first torsion bar extends, wherein, when drawing a line from an arbitrary position of said fixing part to said first torsion bar, said first opening is configured and arranged to be positioned on the line, wherein said first opening has a shape to surround said first torsion bar, and wherein said first opening has an elongated semicircular shape having a center at a position of said first torsion bar.