| 摘要 |
<p>An information recording/reproducing device (21) includes an optical pickup (1) having means (4) arranged to split light emitted from a light source (3) into transmitted light and reflected light, an objective lens (7) focusing the transmitted light onto a disc-shaped recording medium (10), a deflecting mirror (5) guiding the transmitted light to the lens, and a photo detector (6) detecting light reflected by the recording medium; and traversing means arranged to move the optical pickup radially of the recording medium. The light source, splitting means, and mirror are arranged on the optical pickup such that a light axis between the light source and mirror is slanted towards an inner periphery of the recording medium with respect to a direction perpendicular to a moving direction of the optical pickup. The photo detector is disposed at an inner periphery side of the recording medium relative to the light axis.</p> |
