Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hiroshi Tanigawa

Masaharu Fukakusa

Taiichi Mori

Kazuyuki Nakashima

Mikio Tomisaki

Seigi Ito

Haruhiko Kono

Eiichiro Nakao

Toshiharu Kimura

Mitsugu Adachi

Hiroshi Iwabuchi

Mitsuhiro Matsumoto

Jiro Mimasa

Hiroshi Kamei

An optical pickup and an optical disk apparatus of the invention includes a light sourcemounted with a light-emitting element constituted of a monoblock on a surface of a plateand emitting plural light beams, a light-receiving element, optical membersand a coupling basefor coupling the light source, the light-receiving elementand the optical members, wherein a light from the light sourceis directed through the optical memberstoward an optical disk, and a returning light from the optical disk is guided through the optical membersto the light-receiving element, characterized in that the plateprovided in the light sourceand the coupling baseare adjoined by a solder.

Optical pickup and optical disk apparatus

In an optical pickup device for recording information onto and/or reading out information from an optical recording medium, comprising a light beam source for generating a light beam to be projected toward the optical recording medium, and a light beam detector for receiving the light beam reflected by the optical recording medium so that the information is read out from the light beam after reflected by the optical recording medium, a container houses therein the light beam source and includes an aperture through which the light beam proceeds toward the optical recording medium, and a light beam guide member is mounted on an outer surface of the container and covers the aperture to guide the light beam after reflected by the optical recording medium toward the light beam detector.

Optical pickup device

An optical pickup device has a single light beam path in which at least one or either of a plurality of kinds of light beams (different from each other in, for example, wavelength) for respective recording densities and/or recording-medium-thicknesses proceeds toward a surface of an optical recording medium and proceeds to a light beam detector after being reflected by the surface.

An optical pickup device has a single light beam path for common use in treating or passing either of a plurality of kinds of light beams for respective recording densities and/or recording-medium-thicknesses different from each other, in other words, at least one or either of the plurality of kinds of light beams is introduced into the common single light beam path which may includes a single quarter-wave plate and/or single collimator and/or single objective.

Optical pickup having a common light beam path for passing either of a plurality of kinds of light beams

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Kumamoto, Japan

Hiroshi Tanigawa