| 摘要 |
PURPOSE:To make highly precise parts unnecessary, and to simplify assembling work by providing an adjusting mechanism for the position of a mirror to change the optical path of a laser beam emitted from a light source to a direction perpendicular to an optical disk. CONSTITUTION:An adjusting stand 23 can be rotated to the direction D around the axis of a pin 24. Accordingly, since flux of light C' incident nearly perpendicularly to the optical disk after being changed in its optical path by a flat mirror 22 can be adjusted to the direction of an arrow mark D'. Besides, since a rotary adjusting stand 25 can be rotated to the direction E around the axis of a fixing screw 26, the flux of light C' can be adjusted to the direction of the arrow mark E' by the mirror 22. Through these adjustments, the optical path of the flux of light C' becomes capable of being adjusted to all the directions. |
