| 摘要 |
An optical pickup is configured to emit a light beam to an optical disk having a plurality of recording layers and is configured to receive a reflection light beam obtained when the emitted light beam is reflected at a recording layer of the optical disk. The optical pickup includes an objective lens configured to focus the light beam emitted from a light source at a focused recording layer of the optical disk and receive the reflection light beam; a focusing lens configured to focus the reflection light beam received by the objective lens; and a stray-light removing element including the boundary surface and being configured to remove stray light from the reflection light beam by reflecting only the stray light included in the reflection light beam reflected at an unfocused recording layer at the boundary surface.
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