| 摘要 |
<p>Provided are: a light source (19) that emits light; a light guide (30) including: a curved portion (31) including a light incident surface (32) from which the light from the light source (19) enters; and a linear portion (36) including a light emission surface (38) from which the light is emitted to an original, the linear portion (36) coupled to the curved portion (31) and extended in a main-scan direction, the curved portion (31) reflecting the light entered from the light incident surface (32) to the linear portion (36); and a frame (11) that houses the light source (19), and the light guide (30), wherein the light guide (30) includes an inclined portion (41) inclined in a direction that increases an incident angle ² of the light, the inclined portion (41) formed in a range of the linear portion (36) where the light reflected by the curved portion (31) enters.</p> |
