| 摘要 |
PURPOSE:To guide optical beams positively by fixing a guide means and a retention means for retaining it firmly and then maintaining mutual position accuracy positively for guiding the optical beams on an information storage surface. CONSTITUTION:While a circular mounting shaft 43 of a rising mirror 4 is inserted into a rectangular insertion hole 45 formed at a mirror holder 15, a photo-setting adhesive 47 and a thermo-setting adhesive 48 are provided in the direction of a short side 15a of the mirror holder 15 in the above insertion hole 45 and in the direction of a long side 15b, respectively. Then, an inner- periphery part 45a of the above insertion hole 45 and an outer-periphery part 43a of the above mounting shaft 43 are subjected to contact curing and are sealed. Also, sealing by the photo-setting adhesive 47 is performed first and then that by the thermo-setting adhesive 48 is performed next. |
