| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical pickup with high reliability preventing water from entering a package, hardly causing dew condensation and hardly causing reduction in light quantity and occurrence of aberration, etc., by joining a seal plate with solder, etc. SOLUTION: In the optical pickup constituted of a light source 1, an optical guide member 5, a photodetector 13 and a package member, etc., containing a heatradiator plate 4 having a penetration hold 4a on its bottom part, the seal plate 35 closing an adjusting hole 4a provided on the heat 4 radiator plate is joined to the heatradiator4 plate with the solder, etc. Thus, the take-in, etc., of moisture in the air caused by adhesives, etc., of a synthetic resin system is eliminated, and the dew condensation in the inside and the occurrence of the aberration are suppressed. |
