Compact optical signal detecting mechanism and optical storage device having improved signal quality
AssigneeFujitsu Limited
InventorsMotomichi Shibano, Akihiko Yabuki
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Abstract
An optical pickup including a stem; a substrate mounted on the stem; a laser diode mounted on, and electrically insulated from, the substrate; and a photodetector provided on the substrate for detecting return light from an object to be irradiated. The substrate is biased at a given voltage and has an insulating member opposed to the stem. The laser diode has a first electrode opposed to the substrate with a first insulating film, a conductor film, and a second insulating film interposed between the first electrode and the substrate.
Claims8
An optical pickup comprising:
- a stem;
- a substrate mounted on said stem;
- a laser diode mounted on, and electrically insulated from, said substrate;
- and
- a photodetector provided on said substrate for detecting return light from an object to be irradiated;
- said substrate being biased at a given voltage and having an insulating member opposed to said stem;
- and
- said laser diode having a first electrode opposed to said substrate with a first insulating film, a conductor film, and a second insulating film being interposed between said first electrode and said substrate.
an optical storage device capable of at least reading information stored in an optical storage medium, comprising:
- a base;
- a carriage movable along said optical storage medium;
- a stem mounted on said base;
- a substrate mounted on said stem;
- a laser diode mounted on, and electrically insulated from, said substrate;
- an objective lens mounted on said carriage for focusing a laser beam from said laser diode onto said optical storage medium;
- and
- a photodetector provided on said substrate for detecting at least a regenerative signal from a reflected beam from said optical storage medium;
- said substrate being biased at a given potential and having an insulating member opposed to said stem;
- and
- said laser diode having a first electrode opposed to said substrate with a first insulating film, a conductor film, and a second insulating film being interposed between said first electrode and said substrate.
Dependencies are inferred from the claim text.