Imaging device, colorimetry device, and image forming apparatus

摘要

An imaging device includes: a sensor unit that is arranged at a predetermined position inside a casing, and that images a subject outside the casing through an opening portion, with a part of an imaging region, while imaging a reference chart with another part of the imaging region; and a light absorption member that is arranged in an optical path of light from a illumination light source toward a specular-reflection position from which specular-reflection light of the illumination light source is entered to the sensor unit, in the imaging range. The light absorption member has at least a first surface on which light from the illumination light source toward the specular-reflection position is irradiated, and a second surface that faces to the first surface, and reflected light that has been reflected on the first surface and then on the second surface is further directed toward the first surface.

主权项

1. An imaging device comprising:
a casing that includes an opening portion; a reference chart that is arranged at a different position from the opening portion of the casing; a sensor unit that is arranged at a predetermined position inside the casing, and that images a subject outside the casing through the opening portion, with a part of an imaging region, while imaging the reference chart with another part of the imaging region; an illumination light source that illuminates at least the imaging region of the sensor unit; and a light absorption member that is arranged in an optical path of light from the illumination light source toward a specular-reflection position, when a position from which specular-reflection light of the illumination light source is entered to the sensor unit, in the imaging range of the sensor unit is the specular-reflection position, wherein the light absorption member has at least a first surface on which light from the illumination light source toward the specular-reflection position is irradiated, and a second surface that faces to the first surface, and reflected light that has been reflected on the first surface and then on the second surface is further directed toward the first surface.