Hitachi Media Electronics Co., Ltd.

Hitachi, Ltd.

Opnext Japan, Inc.

Other

Hitachi-lg Data Storage, Inc.

Hiroaki Furuichi

Kazumi Kawamoto

Katsumi Kuroguchi

Satoshi Arai

Yoshio Oozeki

Kazumi Takahashi

Kimio Tatsuno

Mitsuo Satake

Rika Nomura

Hideo Sotokawa

Kazuhiko Ito

Atsuhiro Yamamoto

Keiichi Yamada

Shohei Hata

Fumihito Ichikawa

Masayuki Okamura

Hiroyasu Yoshida

Tomonori Sekiguchi

Toshiaki Kakii

Hiroshi Ogasawara

Isamu Yoshida

Hidetoshi Ishida

Naoki Matsushima

Masayoshi Watanabe

Norio Nakazato

Osamu Chiba

Osamu Yamada

Shinji Ogawa

Shigeru Tokita

Hiroyasu Sasaki

Yasuo Amano

Tatsuya Yamasaki

Shigenobu Maruyama

Teppei Tanaka

Kenji Watabe

Yukio Sakigawa

Ryuichiro Mizuno

Akiko Mizushima

Atsushi Miura

Yasunori Iwafuji

Teruhisa Azumaguchi

Tomoki Murata

Hiroyuki Oota

Taketoshi Moriyama

Tooru Yoshida

Tarou Tonoduka

Tsutomu Okumura

Kazuo Takai

Atsushi Takai

Masahiko Kamesawa

Hitoshi Sugawara

Jun-ichi Hirai

Katsuya Oono

Hiroshi Ibe

Tamotsu Nishida

Eiji Tsubono

Shoji Matsumoto

Shintarou Sakamoto

A ridge filterprovided in a particle therapy system includes a repeating structure bodyhaving a plurality of extending partsextending along the incident direction P of a proton beam, and a bottom plateprovided on the lower faceside opposite to the incident side of the proton beamof the repeating structure body. In addition, the repeating structure bodyand the bottom plateare integrally formed by a molding method, and each of the repeating structure bodyand the bottom plateis formed of a laminate of resin.

Resin laminate ridge filter for particle therapy system and manufacturing method thereof

A sensor terminal includes: a vibration sensor; an L-shaped attachment main body portion on which the vibration sensor is mounted and that is detachably attached to a truncated quadrangular pyramid structure portion of a valve cap attached to an opening/closing shaft portion of a water regulating valve provided in a water service pipe; side surface magnets that are provided in the attachment main body portion; and an upper surface magnet that is attached to a lower surface of a base on which the vibration sensor is mounted. Further, the truncated quadrangular pyramid structure portion includes a quadrangular upper surface and four side surfaces, and the attachment main body portion of the sensor terminal is fixed using magnet to each of the upper surface of the truncated quadrangular pyramid structure portion and at least one side surface among the four side surfaces.

Fixing structure for electronic device and water leakage detector

An optical module having a high-moisture-proof package structure in which dew condensation does not occur is provided. An optical module includes optical components including a light source, a pedestal on which the optical components are mounted, a cover which is combined to the pedestal to seal the optical components, and an emitting window disposed in the cover to take light from the light source outside. The pedestal and the cover are sealed with an O ring and a liquid seal material such that a compression direction of the O ring and a compression direction of the liquid seal material are almost perpendicular to each other.

Sealing of optical module with O-ring and liquid resin

A fixing structure of an optical component is composed of a device chassis; a holder holding an optical component; first and second plate parts for joint to the device chassis and a connecting part of both the plate parts are formed in the holder; a plurality of joint holes are formed in the second plate part; a U-groove into which the connecting part of the holder is fitted and a plurality of through-holes are formed in the device chassis; and an adhesive that is extended in a circular columnar shape and is made by inserting the holder into the U-groove of the device chassis, and applying a UV-curing adhesive in such a manner that the UV-curing adhesive is bonded to the first plate part of the holder and is continuous to the inside of the joint hole via the inside of the through-hole, and radiating UV light along the through-hole.

Fixing structure of optical component, fixing method of optical component, optical pick-up device, and module device with light sources of RGB three primary colors

In an optical pickup device for use in recording and reproducing on an optical recording medium, such as a CD or DVD, banks are formed on both sides of an adhesive agent application position for adhering an optical device, such as a photodetector or a laser diode, in an optical pickup case. At this time, a bank on the side of an optical path is formed higher than a height of an outer bank, and an adhesive agent is poured between the banks, to adhere the optical pickup case and the optical device.

Adhesive structure of optical device, adhesion method, and optical pickup device

In connecting flexible printed circuits, a structure with improved connection strength of the connection portion is provided. In this structure in which a first flexible printed circuit and a second flexible printed circuit are connected to each other, a through-hole is provided on the second flexible printed circuit, and a resin member passes through the through-hole and is adhered to the wires of a connection surface of the first flexible printed circuit and the side of the second flexible printed circuit opposite to the connection surface, whereby impact is absorbed by the elasticity of the resin; as for the first flexible printed circuit, adhesion is performed on a metal in a wiring layer with high adhesion strength, while as for the second flexible printed circuit, adhesion is performed on the back side upon which no peeling stress is exerted, improving joining strength to prevent peeling.

Connection structure of flexible printed circuits and optical pickup device

To provide an optical pickup device adapted such that for adhesion fixing of a holder for holding an LD or a light-receiving element to an optical pickup casing via an ultraviolet-curable adhesive, curing shrinkage during ultraviolet irradiation can be reduced and adhesion fixing achieved with high positioning accuracy. In a structure for adhesion fixing of a holder for holding an LD or a light-receiving element to an optical pickup casing via an ultraviolet-curable adhesive, since protrusions are provided at peripheral sections (UV irradiation light source side) on a bonding surface of the holder, a section exposed to strong UV light is first cured, then after the adhesive has moved from an uncured section, the amount of shrinkage of the first cured section in a Z-direction is reduced, and the uncured section is cured.

Optical pickup device with protrusions in a laser beam direction to shield ultraviolet light and method for manufacturing the same

A connection structure of Flexible printed circuits comprising: first and second Flexible printed circuits, respectively, including a base formed of a resin, a plurality of wiring patterns arranged side by side on the base, a cover film formed of a resin to cover opposite sides of the wiring patterns to the base, and a connection portion in which the plurality of wiring patterns are not covered by the cover film, the connection portions of the first and second Flexible printed circuits being connected with each other. The wiring patterns in the connection portions include a large width portion which is larger in width than the wiring patterns covered by the cover film. The large width portions on the first Flexible printed circuit and the large width portions on the second Flexible printed circuit are connected to each other by means of soldering.

Connection structure of flexible printed circuits and optical pickup device including the connection structure

To provide a reliable optical pickup device, a pickup case and an optical component including a lens are fixed by laser welding to increase the welding strength and reduce the positional displacement due to environmental changes. In a laser welded portion between a pickup case and an optical component including a lens, the optical component is provided with a joint portion having a convex protrusion at a portion to be joined to the pickup case. Laser beam irradiation is performed extending longer than the protrusion to form a thick welded portion at an end of the protrusion, in order to increase welding strength between the optical component and the pickup case.

Optical pickup device and laser welding structure of optical components

In laser welding an optical part to a pickup case of an optical pickup device, outgas deposition on a lens surface can be inhibited, and positional shifting of the optical part can be reduced. The optical part has a lens surface facing in an optical axis direction and a protruding part formed, to be joined to the pickup case, at an end portion thereof in a direction perpendicular to the optical axis. A joint surface between the protruding part and the pickup case extends in a direction parallel to the optical axis, and the joint surface is fixed by a weld portion formed by laser irradiation. The joint surface is parallel to a bottom surface of the pickup case, and the height from the bottom surface is approximately equal to the height of the center of the lens surface.

Optical pickup device in which optical part is fixedly joined to pickup case by laser irradiation

An optical pickup device includes a holder which holds an LD and a light-receiving element and an optical pickup case on which the holder is adhesively fixed via an ultraviolet cure adhesive, and is provided with a through hole on a bonding surface of the holder in order to reduce shrinkage when ultraviolet light is irradiated and to form a blind portion on which the ultraviolet light is not irradiated from a specific direction for adhesively fixing with high position accuracy.

Optical pickup device and method of manufacture therefor

The present invention provides an optical pickup device employing a disc protector that includes a plurality of first protrusions and at least one second protrusion disposed on the lens holder, wherein the first protrusions are formed by applying a first adhesive to a plurality of areas of a top surface of the lens holder, wherein the first protrusions are arranged at different locations in the tracking direction such that the objective lens is sandwiched between the first protrusions, wherein the at least one second protrusion protrudes is formed by applying a second adhesive to at least one area of the top surface of the lens holder, and wherein tips of the first protrusions are closer to the optical disc than a tip of the at least one second protrusion.

Optical pickup device and optical disc drive apparatus

An optical pickup device having an optical module provided with an optical element and bonded and fixed to an optical pickup case, wherein the optical module is fixed to the optical pickup case by a first ultraviolet curing adhesive at at least two positions with an optical axis between the positions, the optical axis extending from the optical element to the optical pickup case, and at least a part of an exposed surface of the first ultraviolet curing adhesive is covered with a second ultraviolet curing adhesive higher in hardness or elastic modulus than the first ultraviolet curing adhesive to diminish an optical axis offset of the optical pickup device, further, a heat dissipating material higher in thermal conductivity than the first and second ultraviolet curing adhesives is brought into contact with both optical module and optical pickup case to improve the heat dissipating performance of the optical pickup device.

Optical pickup device and optical disc drive

To provide an optical pickup device in which an optical parts module is fixedly adhered in a high positional precision to an optical pickup case, such that the adhesion strength can be sufficiently enhanced against a stress to be applied to the adhering faces from a flexible printed circuit board connected to the optical parts module, the present invention forms the adhering faces on at least two portions across the optical axis of the optical parts module, and also forms groove portions on the individual surfaces of the optical parts module and the optical pickup case for the adhering faces.

Optical pickup device and manufacturing method thereof

In order to improve reliability of an optical disk drive apparatus at low cost, a flexible substrate for making connection between an optical pick-up device incorporated in the optical disk drive apparatus and a drive side is divided into a first flexible substrate fixed to the optical pick-up body (for example, upper surface), and a second flexible substrate connected to the first flexible substrate and extending to the drive, wiring conductors formed on a connection end portion of the first flexible substrate and wiring conductors formed on a connection end portion of the second flexible substrate are superposed at a region adjacent an end of the case of the optical pick-up device body, and connected to each other by joining material, and a connection section between the wiring conductors is held down by a cover for protecting the optical pick-up device body.

Optical disk drive apparatus having a flexible substrate and wiring conductors

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Kawasaki, Japan

Hiroaki Furuichi