| 摘要 |
PURPOSE: A fine adjustment device of an optical detector is provided to vertically form plural gaps in an optical detector holder, and to 3-dimensionally control the optical detector holder by using left/right coupling units to control a distance between the gaps, thereby realizing an easy fine adjustment. CONSTITUTION: An optical detector holder(217) forms three gaps(P1,P2,P3). The first gap(P1) and the third gap(P3) are gaps between a frame(223) and front/rear frames(219,221). The second gap(P2) is an inner gap of the frame(223). After contacting the front frame(219) of the optical detector holder(217) with a pickup base, the optical detector holder(217) is coupled with the pickup base by screws(225,227) through the rear frame(221) and the front frame(219). The screws(225,227) are coupled with the pickup base through the rear frame(221) and the front frame(219) on left/right sides of the optical detector holder(217). |
