Head-up display

In a structure in which a visible display image is changed only by changing a viewpoint in a horizontal direction, the display image is generated in an appropriate form. Disclosed is a head-up display in which an emission mechanism continuously emits a first laser beam corresponding to a first image for a first viewpoint and a second laser beam corresponding to a second image for a second viewpoint separated from the first viewpoint in the horizontal direction, the scanning mechanism scans the first laser light in a first scanning pattern on the scanning plane and scans the second laser light in a second scanning pattern so that the display image related to the first image can be visually recognized when viewed from a first viewpoint and the display image related to the second image can be visually recognized when viewed from a second viewpoint. The first scanning pattern includes a first linear pattern in which the first laser light is continuously incident on each of one or more rows of optical elements lin