| 摘要 |
To provide a technology of suppressing deterioration of use efficiency of reflected light and output deterioration of a light source device by suppressing, in the cases of bonding a reflecting mirror to a mirror supporting body by having an adhesive therebetween, bonding of the reflecting mirror to the mirror supporting body in a state wherein the reflecting mirror is tilted from a desired position. This mirror device has: a reflecting mirror including a reflecting surface and a rear surface on the reverse side of the reflecting surface; and a mirror supporting body that supports the reflecting mirror by having an adhesive therebetween. The mirror supporting body includes: a bonding surface on which the adhesive is to be placed, said bonding surface facing the rear surface of the reflecting mirror; and a contact surface to be in contact with the rear surface. |
