| 摘要 |
PROBLEM TO BE SOLVED: To accurately position the light emitting and receiving element by constituting the jig out of a base member, the elements to be set by positioning themselves to this member and an elastic member for pressing the element. SOLUTION: The light emitting and receiving element 120 is adjusted in a direction of Y so as to position a laser beam L in a prescribed position on a disk, and moreover, the element 120 is adjusted only in a direction of Y1 by a fine adjustment screw 315 so as to make the beam L on-track, and afterward, a pressing projection 318 and a sheet 341 are stuck to each other by an adhesive BO and fixed up. In addition, the element 120 is also fixed to a fixing part 110b of the base member 110 by an adhesive BON. After this fixing, a holding member 310 and the elastic member 340 are removed from the element 120. Thus, the member 310 can be reused, and resource economization and cost saving can be realized. Then, even when the member 310 is displaced by the member 110 in case of its creeping, this displacement amt. can be absorbed by the member 340, thus preventing displacement of high precision positioning of the element 120. |
