A mirror drive device comprising: a support section; a movable section that is supported, by means of a linking member, in rotatable fashion with respect to said support section; a mirror that is arranged on the surface of said movable section; and a magnet that forms a magnetic field around said movable section; wherein said movable section is provided with: a substrate including a main face and a groove positioned on the side of said main face and extending in spiral fashion as seen from a direction intersecting said main face; a drive coil constituted by a first metallic material arranged in said groove and that is coiled in spiral fashion as seen from a direction orthogonal to the main face; a covering layer constituted by a second metallic material that suppresses diffusion of said first metallic material and extends as far as said main face so as to cover the aperture of said groove; and a first insulating layer arranged on said main face and said covering layer, wherein one end of an external-connection conductor is electrically connected with an inside terminal of said drive coil, and the other end of said external-connection conductor extends to outside said drive coil, said external-connection conductor three-dimensionally intersects said drive coil, through said first insulating layer. a support section; a movable section that is supported, by means of a linking member, in rotatable fashion with respect to said support section; a mirror that is arranged on the surface of said movable section; and a magnet that forms a magnetic field around said movable section; wherein said movable section is provided with: a substrate including a main face and a groove positioned on the side of said main face and extending in spiral fashion as seen from a direction intersecting said main face; a drive coil constituted by a first metallic material arranged in said groove and that is coiled in spiral fashion as seen from a direction orthogonal to the main face; a covering layer constituted by a second metallic material that suppresses diffusion of said first metallic material and extends as far as said main face so as to cover the aperture of said groove; and a first insulating layer arranged on said main face and said covering layer, wherein one end of an external-connection conductor is electrically connected with an inside terminal of said drive coil, and the other end of said external-connection conductor extends to outside said drive coil, said external-connection conductor three-dimensionally intersects said drive coil, through said first insulating layer. a substrate including a main face and a groove positioned on the side of said main face and extending in spiral fashion as seen from a direction intersecting said main face; a drive coil constituted by a first metallic material arranged in said groove and that is coiled in spiral fashion as seen from a direction orthogonal to the main face; a covering layer constituted by a second metallic material that suppresses diffusion of said first metallic material and extends as far as said main face so as to cover the aperture of said groove; and a first insulating layer arranged on said main face and said covering layer, wherein one end of an external-connection conductor is electrically connected with an inside terminal of said drive coil, and the other end of said external-connection conductor extends to outside said drive coil, said external-connection conductor three-dimensionally intersects said drive coil, through said first insulating layer.