A mirror unit includes a concave mirror having a mirror surface reflecting light, and a holder holding the concave mirror. The concave mirror includes first to third positioning protruding portions. The holder includes: a first holder-side positioning portion defining, through contact with the first positioning protruding portion, the position of the concave mirror with respect to the holder at least in the X direction of XY-plane coordinates along the mirror surface; a second holder-side positioning portion defining, through contact with the second positioning protruding portion, the position of the concave mirror with respect to the holder at least in the Y direction of the XY-plane coordinates; and a third holder-side positioning portion defining, through contact with the third positioning protruding portion, the position of the concave mirror with respect to the holder at least in the Z direction orthogonal to the XY lane.
Mirror unit and display device
2020-04-28
Patent
Electronic Resource
English