| 摘要 |
<p>A method of adjusting the inclination of a guide shaft allowing the parallelism of a turn table to the plane of a recording medium device vertical to an optical axis, comprising a first adjusting step for placing two placing surfaces (PN11) and (PN12) of three placing surfaces of a skew angle adjusting jig (J1) on a first guide shaft (32a) at both ends, allowing parallel light from an autocollimator to launch vertically onto a plane mirror (RB) and an optical plane (OF1) rotated by the turn table with the remaining one placing surface (PN13) placed on a second guide shaft (32b) at one end, and adjusting the height of one end of the first guide shaft with reference to the height of the other end of the first guide shaft so that reflected light from the plane mirror and reflected light from the optical plane are made parallel with each other.</p> |
