IMAGE CAPTURING UNIT, COLOR MEASURING DEVICE, IMAGE FORMING DEVICE, COLOR MEASURING SYSTEM, AND COLOR MEASURING METHOD

摘要

An image capturing unit includes a sensor unit that captures a predetermined area including a subject; a reference chart that is arranged in the predetermined area and captured together with the subject by the sensor unit; an optical path length changing member that is arranged on an optical path extending from the subject to the sensor unit and is capable of changing a length of the optical path.