Patent ID: 8861045

Claim:
An illuminator for use in an image scanning apparatus to illuminate light on an object to be scanned, comprising: a light source configured to emit the light; a light guide having an elongated shape with its length extending along a first direction, the light guide being configured to receive the light from the light source, and to change a direction of the received light; a guide holder having formed thereon a mounting recess into which the light guide is received; and at least one supporting protrusion, formed at the guide holder, protruding into the mounting recess in order to support a part of the light guide in at least a second direction perpendicular to the first direction, wherein the light guide comprises: an emission face through which the light is emitted from the light guide, a pair of guide faces formed at both longitudinal sides of light guide, and a reflect face opposite the emission face of the light guide to reflect the light, wherein the at least one supporting protrusion having a plurality of supporting protrusions to support the pair of guide faces and the reflect face respectively.