| 摘要 |
PROBLEM TO BE SOLVED: To suitably fix an object and suppress interference between rays of reflection light.SOLUTION: An information acquisition apparatus comprises: irradiation means (110) that irradiates an object (500) with an electromagnetic wave; acquisition means (140) that detects the electromagnetic wave reflected on the object and acquires information on the object; and fixing means (430) that is located on the back side of the object when seen from the irradiation means and fixes the position of the object. The fixing means includes a reflection surface that reflects the electromagnetic wave passing through the object. The reflection surface has a structure (450) in which an optical distance of the reflected electromagnetic wave required to reach the acquisition means is changed according to the position of reflection.SELECTED DRAWING: Figure 4 |
