| 摘要 |
PROBLEM TO BE SOLVED: To provide an adjusting method and an adjusting device so as to improve the accuracy of a tilt angle of an optical deflection device using a polygon mirror. SOLUTION: This device is composed of a light source 301 irradiating the mirror surface 101A of a polygon mirror 101 and a light receiving element 302 receiving a reflected light beam from the mirror surface 101A, has a tilt angle adjusting means 400 composed of a tilt angle measuring instrument 300 for measuring the tilt angle of the mirror surface 101A and a pushing-up member 401A (B) acting in parallel with the axial direction of the polygon mirror 101 and, by measuring the tilt angle of the mirror surface 101 A and finely adjusting the tilt angle adjusting means 400 so as to decrease the variance of tilt angle of the mirror surface 101A, positional adjustment of the polygon mirror fitted over the outside cylinder 102 of the radial shaft is performed. |
