| 摘要 |
PROBLEM TO BE SOLVED: To mount a sensor lens to a housing with high accuracy. SOLUTION: In an optical pickup device 1 including: a photodetector 20 which irradiates a rotating information recording medium 5 with an optical flux, detects the optical flux reflected from the information recording medium 5, and receives the optical flux reflected by the information recording medium 5; a sensor lens 19 which focuses the optical flux reflected by the information recording medium 5 on the photodetector 20; and a housing 50 on which the photodetector 20 and the sensor lens 19 are mounted. The sensor lens 19 is mounted on the housing at three points. More specifically, three protrusions 95 are provided at a position in the housing 50 where the sensor lens 19 is to be mounted. The sensor lens 19 is mounted on the housing 50 at three points by bringing a contact surface 1932 of the sensor lens 19 into contact with the three protrusions 95. COPYRIGHT: (C)2011,JPO&INPIT
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