| 摘要 |
The displacement of the surface of a strip-shaped tire component member can be accurately measured using a two-dimensional displacement sensor (11) regardless of the surface conditions of the strip-shaped member (40). The two-dimensional displacement sensor (11) includes first and second laser units (111, 112) serving as emission means which emit first laser light incident on the surface of the strip-shaped member (40) from a direction intersecting the thickness direction of the strip-shaped member (40) and second laser light incident on the surface of the strip-shaped member (40) from a direction parallel to the thickness direction of the strip-shaped member (40), a camera (113) serving as a displacement measuring means which has a light receiving element for receiving light reflected from the surface of the strip-shaped member (40) and measures the amount of displacement of the surface of the strip-shaped member (40) from the reflected light receiving position detected by the light receiving element, an optical element (11L) for focusing the reflected light on the light receiving element, and a switching means (13) for switching the laser light to be incident on the surface of the strip-shaped member (40) between the first laser light and the second laser light. |
