LIGHT GUIDE, ILLUMINATING DEVICE AND IMAGE READING APPARATUS

摘要

A light guide configured to cause light entering from a point light source to exit as linear light. The light guide has a rod portion extending in a first direction and having a reflecting surface. A plurality of reflecting elements are provided on the reflecting surface to reflect the light entering from the point light source. A part of the reflecting elements located closer to the point light source than a center of the rod with respect to the first direction is arranged so as to sheer away from a strongly illuminated area of the reflecting surface, which is an area illuminated strongly with light entering the rod portion, in a second direction parallel to the reflecting surface and perpendicular to the first direction.

主权项

1. A light guide configured to cause light entering from a point light source to exit as linear light, the light guide comprising:
a rod portion extending in a first direction and having a reflecting surface on which a plurality of reflecting elements are provided to reflect the light entering from the point light source, wherein a part of the reflecting elements located closer to the point light source than a center of the rod portion with respect to the first direction is arranged so as to sheer away from a strongly illuminated area of the reflecting surface, which is an area illuminated strongly with light entering the rod portion, in a second direction parallel to the reflecting surface and perpendicular to the first direction.