A MEMS mirror device includes a rectangular frame, a mirror unit having a reflecting portion on one face thereof and connected via the hinges inside the frame, and a drive unit for tilting the mirror unit around the hinges as the axis, wherein the frame has two protruding portions spaced at a regular interval and extending into the frame on both sides of a connected portion with the hinge, and an elastic member is provided to bridge the hinge between two protruding portions.

 
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