APPARATUS FOR MEASURING INCLINATION OF SUBJECT

摘要

PROBLEM TO BE SOLVED: To accurately measure the inclination of a subject having a curved surface to be measured. SOLUTION: This apparatus for measuring the inclination of a subject includes a light source 11, a light-receiving element 19, and a collimator lens 17 for converting light rays emitted from the light source 11 into parallel light rays to irradiate the subject 18 therewith and for collecting and focusing the reflected light rays onto the light-receiving element 19, and measures the inclination of the subject 18 from the imaging position of the light-receiving element 19. The apparatus also has a reference lens 20 disposed between the collimator lens 17 and the subject 18 to collect or diffuse the parallel light rays to irradiate the subject 18 therewith from a direction perpendicular to the tangent of the curved surface of the subject 18.