Patents by Inventor Shogo Horinouchi
Shogo Horinouchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20050007906Abstract: To provide an optical pickup device and optical disk device capable of realizing at least one of thickness reduction, size reduction and suppression against characteristic deterioration even where coping with various wavelengths of laser including a blue laser. An optical pickup device comprising light sources for respectively emitting a plurality of different wavelengths of light, unit structured for causing at least a part of the light emitted from the light sources to pass a same optical path; and focusing unit for focusing the light. The focusing unit includes at least first and second focusing parts, the first focusing part being to focus mainly a wavelength of light different from a wavelength of light to be mainly focused by the second focusing part.Type: ApplicationFiled: July 7, 2004Publication date: January 13, 2005Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Shogo Horinouchi, Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi, Shin Ishibashi, Hitoshi Asahi
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Patent number: 6807140Abstract: In an optical pickup device for emitting at least two laser beams suitable for respective optical recording mediums selectively operated on an optical disk driver so that a signal is read out from and/or recorded onto the selected one of the optical recording mediums, an anamorphic system is arranged to change a cross-sectional shape of one of the laser beams from an oval toward a circle between a divergence point and a confluence point along the one of the laser beam between an upstream common optical paths of the laser beams from the light beam source and a downstream common optical paths of the laser beams toward the objective lens, at which divergence point the laser beams from the upstream common optical path diverge from each other, and at which confluence point the laser beams converge into the downstream common optical path.Type: GrantFiled: October 18, 2001Date of Patent: October 19, 2004Assignee: Matsushita Electric Industrial.Co., Ltd.Inventors: Shogo Horinouchi, Hiroshi Goto, Fuminobu Furukawa
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Patent number: 6804186Abstract: An optical pick-up composed of an objective lens and a liquid crystal element, for recording and reproduction of optical discs having different recording densities, the liquid crystal element having nine zones, including: zones 2, 4 located in center parts of half circles of a small diameter beam for a low density optical disc, zones 3, 5 laid along the outer peripheries of zones 2, 4 within the half circles so as to surround zones 2, 4, zones 6, 7 along the outer peripheries of zones 3, 5, between the outer periphery of the small diameter beam and a large diameter beam, extending along substantially half circumferential parts of the small diameter beam, zones 8, 9 extending along substantially half circumferential parts of the large diameter beam, a remainder first zone and including a diameter whose the direction is the same as a tilt direction to be corrected.Type: GrantFiled: May 21, 2001Date of Patent: October 12, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kouki Kojima, Shogo Horinouchi
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Patent number: 6757224Abstract: Provided are an integrated optical component which can prevent a detection optical system being affected by variation in working temperature, and a pick-up device using the integrated optical component. The integrated optical component for guiding a light beam emitted from a light emitting element to an optical disc, and for separating a required light beam from reflected light from the optical disc, wherein the integrated optical component includes therein a plurality of optical surfaces, and a diffraction grating for extracting light beams required from tracking control and focus control, from the reflected light is formed in any one of the optical surfaces.Type: GrantFiled: September 25, 2001Date of Patent: June 29, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Fukakusa, Shogo Horinouchi, Hiroshi Goto, Fuminobu Furukawa
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Patent number: 6654320Abstract: A small-sized, inexpensive optical pickup apparatus can be assembled with high accuracy. The optical pickup apparatus has a various-purpose semiconductor laser, an integrated optical assembly for guiding outgoing light to an optical disk and for separating reflected light, a light receiver for receiving light and converting the received light into an electrical signal, and a coupling member for retaining a positional relationship among the various-purpose semiconductor laser, the integrated optical assembly, and the light receiver. By using a various-purpose semiconductor laser, the optical pickup apparatus can be made in a small size at low cost, and can be accurately assembled. The apparatus is also capable of accurately and efficiently detecting the optical power of the various-purpose semiconductor laser.Type: GrantFiled: February 15, 2001Date of Patent: November 25, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Fukakusa, Shogo Horinouchi, Shigeki Takeuchi, Toshihiro Koga, Fuminobu Furukawa
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Publication number: 20030185137Abstract: Provided are a thin optical pick-up apparatus which can record and reproduce data to and from both high recording density disc and low recording density disc, and a thin optical disc unit using this optical pick-up apparatus. The optical pick-up apparatus comprises a short wave LDA 11, a long wave LDAB 12, a beam splitter 41, a riser prism 23 for turning an optical axis into an optical axis perpendicular to the optical disc, a composite filter 33 being integrally incorporated with the objective lens 32 while a surface of the composite filter 33 is opposed to an oblique surface of the riser prism 23 in parallel with each other.Type: ApplicationFiled: March 26, 2003Publication date: October 2, 2003Inventors: Shogo Horinouchi, Hiroshi Goto, Taiichi Mori, Takashi Haruguchi, Hisayoshi Takamure, Shinji Tanaka, Junya Aso, Masaharu Fukakusa, Toshihiro Koga, Mitsuhiro Matsumoto, Fuminobu Furukawa
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Publication number: 20030179667Abstract: Provided is a focus and tracking control method for an optical pick-up apparatus which is used for recording and reproduction of a small-sized optical disc and which can carry out stable focus control and stable tracking control. A focus control method for an optical pick-up apparatus comprising a light source, an objective lens, a light receiving means having divided four light receiving zones and a polarizing means having divided for lattice zones, characterized in that when the reflected light beam is incident upon the four light receiving zones by way of the four lattice zones, focus control is carried out in accordance with a difference signal between the groups, in the radial direction, of the four light receiving zones which are divided into two groups in the radial direction by the division line in parallel with the tangential direction, respectively through the four lattice zones which are divided into two groups in the tangential direction by a division line in parallel with the radial direction.Type: ApplicationFiled: March 19, 2003Publication date: September 25, 2003Inventors: Hideki Yoshinaka, Shogo Horinouchi, Shin Ishibashi, Fuminobu Furukawa
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Publication number: 20030103439Abstract: Provided are an optical pickup apparatus which is used for recording and reproducing a small-sized optical disc and which is small-sized, lightweight and inexpensive, and an optical disc unit, including an optical head which comprises a lens holder engaged and fixed to an arm, an objective lens fixed to that side which is opposed to the optical disc, a semiconductor laser arranged on a surface side which is in rear of the former surface, and a reflection mirror for guiding a light beam to the objective lens, the semiconductor laser being arranged on an OEIC through the intermediary of a submount, on that surface side which is on the rear surface side of the lens holder.Type: ApplicationFiled: November 22, 2002Publication date: June 5, 2003Inventors: Shogo Horinouchi, Hideki Yoshinaka, Shin Ishibashi, Fuminobu Furukawa
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Publication number: 20020051420Abstract: In an optical pickup device for emitting at least two laser beams suitable for respective optical recording mediums selectively operated on an optical disk driver so that a signal is read out from and/or recorded onto the selected one of the optical recording mediums, an anamorphic system is arranged to change a cross-sectional shape of one of the laser beams from an oval toward a circle between a divergence point and a confluence point along the one of the laser beam between an upstream common optical paths of the laser beams from the light beam source and a downstream common optical paths of the laser beams toward the objective lens, at which divergence point the laser beams from the upstream common optical path diverge from each other, and at which confluence point the laser beams converge into the downstream common optical path.Type: ApplicationFiled: October 18, 2001Publication date: May 2, 2002Inventors: Shogo Horinouchi, Hiroshi Goto, Fuminobu Furukawa
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Publication number: 20020039330Abstract: Provided are an integrated optical component which can prevent a detection optical system being affected by variation in working temperature, and a pick-up device using the integrated optical component. The integrated optical component for guiding a light beam emitted from a light emitting element to an optical disc, and for separating a required light beam from reflected light from the optical disc, wherein the integrated optical component includes therein a plurality of optical surfaces, and a diffraction grating for extracting light beams required from tracking control and focus control, from the reflected light is formed in any one of the optical surfaces.Type: ApplicationFiled: September 25, 2001Publication date: April 4, 2002Inventors: Masaharu Fukakusa, Shogo Horinouchi, Hiroshi Goto, Fuminobu Furukawa
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Publication number: 20020001282Abstract: An optical pick-up composed of an objective lens and a liquid crystal element, for recording and reproduction of optical discs having different recording densities, the liquid crystal element having nine zones, including: zones 2, 4 located in center parts of half circles of a small diameter beam for a low density optical disc, zones 3, 5 laid along the outer peripheries of zones 2, 3 within the half circles so as to surround zones 2, 4, zones 6, 7 along the outer peripheries of zones 3, 5, between the outer periphery of the small diameter beam and a large diameter beam, extending along substantially half circumferential parts of the small diameter beam, zones 8, 9 extending along substantially half circumferential parts of the large diameter beam, a remainder first zone and including a diameter whose the direction is the same as a tilt direction to be corrected.Type: ApplicationFiled: May 21, 2001Publication date: January 3, 2002Inventors: Kouki Kojima, Shogo Horinouchi
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Publication number: 20010043535Abstract: A small-sized, inexpensive optical pickup apparatus can be assembled with high accuracy. The optical pickup apparatus has a various-purpose semiconductor laser, an integrated optical assembly for guiding outgoing light to an optical disk and for separating reflected light, a light receiver for receiving light and converting the received light into an electrical signal, and a coupling member for retaining a positional relationship among the various-purpose semiconductor laser, the integrated optical assembly, and the light receiver. By using a various-purpose semiconductor laser, the optical pickup apparatus can be made in a small size at low cost, and can be accurately assembled. The apparatus is also capable of accurately and efficiently detecting the optical power of the various-purpose semiconductor laser.Type: ApplicationFiled: February 15, 2001Publication date: November 22, 2001Inventors: Masaharu Fukakusa, Shogo Horinouchi, Shigeki Takeuchi, Toshihiro Koga, Fuminobu Furukawa
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Patent number: 5978344Abstract: In an optical pickup, light, emitted from a light-emitting element, is transmitted through a first beam splitter film with polarization selectivity, and a zero-order diffraction beam and two (.+-.) first order diffraction beams are produced. These beams are applied in a condensed manner to an optical disk through a condensing element, and the return light beam from the optical disk is fed to a photodetector through a second beam splitter film with polarization selectivity, thereby effecting the recording and reproduction of information, the tracking and the focusing. A diffusion angle conversion hologram is provided between the light-emitting element and the first beam splitter film, and with respect to the diffusion angle conversion hologram, the relation between the diffusion angle of the incident beam and the diffusion angle of the outgoing beam is specified.Type: GrantFiled: June 26, 1997Date of Patent: November 2, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shogo Horinouchi, Shigeki Takeuchi, Kazuhiko Higo, Hideki Yoshinaka, Toshihiro Koga, Jiro Mimasa, Hidehiro Kugisaki
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Patent number: 5790502Abstract: In an optical pickup, light, emitted from a light-emitting element, is transmitted through a first beam splitter film with polarization selectivity, and a zero-order diffraction beam and two (.+-.) first order diffraction beams are produced. These beams are applied in a condensed manner to an optical disk through a condensing element, and the return light beam from the optical disk is fed to a photodetector through a second beam splitter film with polarization selectivity, thereby effecting the recording and reproduction of information, the tracking and the focusing. A diffusion angle conversion hologram is provided between the light-emitting element and the first beam splitter film, and with respect to the diffusion angle conversion hologram, the relation between the diffusion angle of the incident beam and the diffusion angle of the outgoing beam is specified.Type: GrantFiled: September 26, 1995Date of Patent: August 4, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shogo Horinouchi, Shigeki Takeuchi, Kazuhiko Higo, Hideki Yoshinaka, Toshihiro Koga, Jiro Mimasa, Hidehiro Kugisaki
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Patent number: 5761178Abstract: An optical integration element of the invention comprises a substrate possessing a light emitting element for emitting light, and a receiving sensor for receiving reflected light, an incident part composed of an optical transparent material for receiving the light from the light emitting element, a first reflecting part for reflecting the light entering from the incident part, a second reflecting part for reflecting by converting the light from the first reflecting part into nearly parallel light or convergent light, a condensing part for condensing the light from the second reflecting part, and an optical member forming an optical path transforming part for guiding the reflected light into the receiving sensor.Type: GrantFiled: April 17, 1997Date of Patent: June 2, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Fukakusa, Taiichi Mori, Shogo Horinouchi
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Patent number: 5687155Abstract: An optical integration element of the invention comprises a substrate possessing a light emitting element for emitting light, and a receiving sensor for receiving reflected light, an incident part composed of an optical transparent material for receiving the light from the light emitting element, a first reflecting part for reflecting the light entering from the incident part, a second reflecting part for reflecting by converting the light from the first reflecting part into nearly parallel light or convergent light, a condensing part for condensing the light from the second reflecting part, and an optical member forming an optical path transforming part for guiding the reflected light into the receiving sensor.Type: GrantFiled: February 15, 1996Date of Patent: November 11, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Fukakusa, Taiichi Mori, Shogo Horinouchi
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Patent number: 5465242Abstract: An optical disk device for use as a mass storage device includes an axially and angularly movable support mounted on a hollow shaft and supporting a condensing lens that converges a laser beam onto an optical disk mounted in position. A substantially cylindrical side yoke is disposed concentrically around the hollow shaft, and a magnet is coupled to said side yoke, the magnet and the side yoke jointly providing a magnetic circuit. A tracking coil is mounted on the support, the side yoke extending through the tracking coil in magnetically coacting relationship to the magnetic circuit. When an electric current flows through the tracking coil, the support and hence the condensing lens are angularly moved in a wide angular range about shaft to access a desired track on the optical disk. The condensing lens is disposed off the shaft, but is spaced from the shaft by a relatively small distance.Type: GrantFiled: April 14, 1994Date of Patent: November 7, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yugi Terashima, Shogo Horinouchi, Hiroyuki Matsuba
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Patent number: 5244295Abstract: A dot-matrix impact printer includes a print head in a housing for printing a recording sheet fed around a platen. The recording sheet is pressed against the platen by a sheet presser roller. A roller cover or a flap is disclosed as a sound insulating wall closely to the sheet presser roller and has an edge held against the housing. The space above the print head is closed by the housing, the platen, the sheet presser roller, and the platen, so that the impact noise produced when the printer is in operation will not leak out of the housing, while at the same time the recording sheet fed around the platen is not blocked by the closure mechanism.Type: GrantFiled: January 14, 1993Date of Patent: September 14, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yuji Terashima, Shogo Horinouchi, Yutaka Miyazono, Takashi Haruguchi, Kazumi Otsubo
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Patent number: D510915Type: GrantFiled: October 10, 2003Date of Patent: October 25, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shogo Horinouchi, Hideki Ohyama