| 摘要 |
PROBLEM TO BE SOLVED: To prevent detection of a displacement amount from being affected by errors.SOLUTION: A displacement detection device includes a light-emitting part 11 that irradiates the surface of a moving object with light, and an image sensor 12 that takes reflectance from the surface of the moving object into a light reception region as an image periodically, derives the displacement amount of the moving object from the movement amount of the taken-in image in the light reception region. The image sensor 12 adjusts the image taking-in period according to the movement speed of the moving object. |
