Patent ID: 9191547
Filing Date: 2015-11-17
Classification: H04N

Abstract:
1. An image reading apparatus that irradiates an object with light and reads an image on or of the object, comprising: a table having a flat surface on which the object is placed; a light source including an inner surface having a curved shape and being configured to emit the light from at least a light emitting portion to the object on the flat surface of the table, the light emitting portion being a portion of the inner surface, the curved shape allowing a location of the light emitting portion to be changed within the inner surface along the curved shape so that a light collection spot of the light shifts along a direction perpendicular to the flat surface of the table; an imaging device configured to detect light reflected off the object; a range-finding section configured to measure a distance between the flat surface of the table and the object; and a control section configured to change the location of the light emitting portion within the inner surface along the curved shape according to the distance measured by the range-finding section, wherein the image reading apparatus reads the image on or of the object through the imaging device detecting light reflected off the object.