| 摘要 |
<p>An optical pickup head comprising a substrate (1) on which an optical sensor (2) is formed, and an optical member (4) adhered on said optical sensor (2) on said substrate (1) by an adhesive (6) and including a semi-transmissive reflective film (3) adapted to reflect the ligth emitting from a laser source (10) and to transmit the light returned from a record medium (7) of a disk (12), characterized in that the refractive index of said optical member (4) is set so as to be larger than the refractive index of said adhesive (6).</p> |
