| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for easily adjusting the focusing position of a height-measuring device by the triangulation. SOLUTION: A height-measuring device for measuring the height of a subject from a light point position by forming the image of a light point generated by a light source on the surface of the subject via a lighting side image-forming lens 3 and forming the image of the light point image on a light point position detection element 5 via a light reception side image-forming lens 4, has a stage 12 that can travel in vertical direction by placing the subject, an image pick-up camera 16 for capturing a light point image that is formed on the target surface on the stage 12, a stage 12 where the quantity of light of a specific picture element of the light point image captured by the image pick-up camera 16 is maximized or the shape of the light point image is minimized, or a control part for detecting the application side image-forming lens position as a focusing position. |
