Patent ID: 8917429
Filing Date: 2014-12-23
Classification: H04N

Abstract:
1. A contact-type image sensor module comprising: a light source; a light-conducting member that extends in a lengthwise direction and having an end face opposite the light source in the lengthwise direction, the light-conducting member including an irradiation surface for guiding light from the light source to an irradiated medium; and a lens member disposed along, and in contact with, the light-conducting member that forms an erect unmagnified image on a light-receiving surface of a linear image sensor; wherein a first angle is formed by the optical axes of the lens member and the light-conducting member, and a second angle is formed by the optical axis of the lens member and a segment of a light flux from an exit point on the irradiation surface to a point of incidence, and wherein the irradiation surface is oriented so as to increase the second angle relative to the first angle.