Image sensor module and light guiding member used for the same

A line image sensor module for reading an image of an object along a line;

• comprising:
• a light source;
• a light guiding member elongated in a first direction alone the image reading line and including a light incident surface from which light emitted from the light source enters, a reflecting surface for reflecting, in a direction crossing the first direction, the light traveling from the light incident surface, and a light emitting surface for emitting the light from the reflecting surface as a line of light elongated in the first direction;
• a reflector covering at least part of the light guiding member;
• and
• a light receiving element for receiving the line of light reflected by the object in a second direction which is perpendicular to the first direction;
• wherein the reflector is formed with an opening and an inclined surface, the opening is elongated in the first direction to allow the line of light reflected by the object to pass therethrough, the inclined surface is positioned at an end of the opening in the first direction, and the inclined surface has a normal which is neither parallel to the first direction nor parallel to a third direction which is perpendicular to both of the first direction and the second direction.

A light guiding member for incorporation in a line image sensor module for reading an image of an object along a line, the light member being elongated in the first direction and comprising:

• a light incident surface for allowing entry of light;
• a first reflecting surface for reflecting, in the first direction, the light having entered from the light incident surface;
• a second reflecting surface for reflecting, in a direction crossing the first direction, the light reflected by the first reflecting surface;
• and
• a light emitting surface for emitting the light from the second reflecting surface as a line of light elongated in the first direction;
• wherein the light incident surface is oriented in a second direction which is perpendicular to the first direction, the first reflecting surface overlaps the light incident surface in the first direction, and the light emitting surface partially overlaps the first reflecting surface in the first direction.