| 摘要 |
PURPOSE:To lead out the position control signal of a laser light by the incident light amt. to each factor and to reduce the man/hour in correcting a misregistration by dividing a detector in plural factors electrically by aligning to the position of a laser light. CONSTITUTION:A detector 100 has the light receiving pat multi-divided in a matrix shape in X direction and Y direction within the plane about parallel to the fitting face 100-2 of a board 100-1 and the board 100-1 is tacked by screw to the fitting face of a pickup case. The board 100-1 is then subjected to screw tightening after performing the position adjustment so that the light flux section 110 of the laser light may completely be converged in the detector 100 within the fitting face, and the detector 100 is fixed. A current is then induced at the element unit radiated by the laser light on the detector 100, which generates a current in the zone 120 and 130 bisected to the right and left by xio. |
