IMAGE FORMATION DEVICE

An image formation device 1 forms a projection image 3 by projecting a pencil of rays 40 emitted from a light source onto a projection surface 2, the image formation device including a light scanning unit 10 that deflects and reflects the pencil of rays 40 in a first direction and a second direction intersecting with the first direction, and a projection system 9 that guides the deflected and reflected pencil of rays 40 to the projection surface 2. The projection system 9 is configured to allow the optical paths of principal rays 5, 6, 7, and 8 in each pencil of rays 40 incident on the projection system 9 to mutually intersect at a position between an incidence surface 11 and an emission surface 14 of an optical element that makes up the projection system 9.