Optical pickup device
AssigneePioneer Corporation
InventorsIsao Tomisawa, Noboru Minagawa, Kazunobu Hashimoto, Masataka Izawa, Satoshi Sugiura
Life of this patent
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Abstract
An optical pickup device for reading information recorded on an optical disc, the device having a semiconductor laser, a half mirror and a light-receiving element. The semiconductor laser and the half mirror are attached to each other via a grating, and the light-receiving element is attached on the surface of the half mirror.
Claims10
An optical pickup device for reading information recorded on an optical recording medium, the device comprising a light source, a forward/return optical path separating member and a light-receiving element, wherein
- the light source and the forward/return optical path separating member are attached to each other directly or via another optical member.
An optical pickup device for reading information recorded on an optical recording medium, the device comprising a light source, a forward/return optical path separating member and a light-receiving element, wherein
- the light receiving element is attached to the forward/return optical path separating member.
An optical pickup device for reading information recorded on an optical recording medium, the device comprising a light source, a forward/return optical path separating member and a light-receiving element, wherein
- the light source and the forward/return optical path separating member are attached to each other directly or via another optical member, and
- the light receiving element is attached to said forward/return optical path separating member.
An optical pickup device according to claim, wherein the light-receiving element has a focus function.
Dependencies are inferred from the claim text.