Patents by Inventor Yoshifumi Kawaguchi
Yoshifumi Kawaguchi 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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Patent number: 7514722Abstract: A white LED illumination device can include a white LED that has unevenness in tone and is used as a light source. The white LED illumination device can emit white light with high color rendering properties without unevenness in tone and can include the above noted white LED located adjacent an optical lens. The white LED and optical lens can be arranged so that the optical axes of both are substantially aligned with each other. The white LED can include an LED chip which emits light having a peak wavelength in the blue wavelength range and a fluorescent material which can be excited by the light emitted from the LED chip to emit yellow or yellowish green fluorescence (i.e., complementary colors to blue) by use of wavelength conversion. The optical lens can have a recessed light incident surface having an opening, a light emitting surface, and a totally reflective surface positioned between the light incident surface and the light emitting surface.Type: GrantFiled: November 20, 2006Date of Patent: April 7, 2009Assignee: Stanley Electric Co., Ltd.Inventors: Yoshifumi Kawaguchi, Katsumi Kobinata
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Publication number: 20090053131Abstract: Provided is a MgO single crystal for obtaining a magnesium oxide (MgO) single crystal deposition material which is prevented from splashing during the vapor deposition in, e.g., an electron beam deposition method without reducing the deposition rate, and for obtaining a MgO single crystal substrate which can form thereon, e.g., a superconductor thin film having excellent superconducting properties. A MgO single crystal having a calcium content of 150×10?6 to 1,000×10?6 kg/kg and a silicon content of 10×10?6 kg/kg or less, wherein the MgO single crystal has a variation of 30% or less in terms of a CV value in detected amounts of calcium fragment ions, as analyzed by TOF-SIMS with respect to the polished surface of the MgO single crystal. A MgO single crystal deposition material and a MgO single crystal substrate for forming a thin film obtained from the MgO single crystal.Type: ApplicationFiled: March 24, 2006Publication date: February 26, 2009Applicant: TATEHO CHENMICAL INDUSTRIES CO., LTD.Inventors: Atsuo Toutsuka, Yoshifumi Kawaguchi, Masaaki Kunishige
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Publication number: 20090027912Abstract: The disclosed subject matter provides a reflecting cover above and between a light-emitting chip and a projection lens. The diffused light from the light-emitting chip is led toward the projection lens via the reflecting cover such that it transmits through the projection lens at a certain angle. This makes it possible to increase the amount of controllable light, and to improve the amount of light beams radiated from the lamp, thereby realizing a brighter lamp and an improved light distribution shape.Type: ApplicationFiled: July 23, 2008Publication date: January 29, 2009Inventors: Toshiyuki Kondo, Daisuke Uchida, Yoshifumi Kawaguchi
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Publication number: 20080292264Abstract: An authoring device includes: a separator for separating a video stream and an audio stream from the input stream; a multiplexer for multiplexing the video stream and the audio stream to generate content information and further generating control information for managing stream reproduction, generating, from content information and control information, incomplete disc image data which is a series of data basically based on a predetermined format and in which a part of reproduction control information defined by a predetermined format is missing, and further generating analysis information required for generating the missing part of the reproduction control information; and a disc image completing section for completing the incomplete disc image data by referencing the analysis information after generation of the incomplete disc image data.Type: ApplicationFiled: August 5, 2005Publication date: November 27, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Yoshifumi Kawaguchi, Hideki Taniguchi
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Publication number: 20080081767Abstract: A magnesium oxide single crystal having controlled crystallinity comprising a subboundary, and ranges of variation of diffraction line positions, as measured for reciprocal lattice maps with respect to a region surrounded by the same subboundary, with the range of the variation of 1×10?3 to 2×10?2 degree of on ?? coordinates, and with the range of the variation of 4×10?4 to 5×10?3 degree on 2? coordinates.Type: ApplicationFiled: December 28, 2005Publication date: April 3, 2008Applicant: TATEHO CHEMICAL INDUSTRIES CO., LTD.Inventors: Atsuo Toutsuka, Yoshifumi Kawaguchi, Masaaki Kunishige
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Publication number: 20070201233Abstract: An illumination device can be configured to be capable of radiating light generated from a light emitting element while efficiently dissipating heat from the light emitting element. The illumination device can also efficiently utilize the light from the light emitting element. The illumination device can include a light emitting element, and a plurality of radially disposed radiation fins for dissipating heat generated by the light emitting element. An aperture for allowing light from the light emitting element to pass therethrough can be formed between adjacent ones of the radiation fins. In addition, a reflection surface for reflecting light which is blocked by the radiation fins when passing through the aperture can be formed on a surface of each of the radiation fins.Type: ApplicationFiled: February 26, 2007Publication date: August 30, 2007Inventors: Yuji Sugiyama, Hitoshi Shoda, Takehiko Saigo, Yoshifumi Kawaguchi
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Publication number: 20070114551Abstract: A white LED illumination device can include a white LED that has unevenness in tone and is used as a light source. The white LED illumination device can emit white light with high color rendering properties without unevenness in tone and can include the above noted white LED located adjacent an optical lens. The white LED and optical lens can be arranged so that the optical axes of both are substantially aligned with each other. The white LED can include an LED chip which emits light having a peak wavelength in the blue wavelength range and a fluorescent material which can be excited by the light emitted from the LED chip to emit yellow or yellowish green fluorescence (i.e., complementary colors to blue) by use of wavelength conversion. The optical lens can have a recessed light incident surface having an opening, a light emitting surface, and a totally reflective surface positioned between the light incident surface and the light emitting surface.Type: ApplicationFiled: November 20, 2006Publication date: May 24, 2007Inventors: Yoshifumi Kawaguchi, Katsumi Kobinata
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Publication number: 20050243172Abstract: A housing device, such as rear view mirror, with built-in camera can include an infrared projection device with an infrared light source for irradiating infrared light onto an image capture region for the camera. The camera can display a sensitivity to visible light and infrared light, and can be built into the mirror housing which is mounted to a vehicle and contains a mirror used for visual checking purposes. The infrared projection device can include a light transmission cover. The cover can be positioned in an infrared irradiation direction of the infrared light source, can be formed from a material that is impenetrable to visible light and transmits only infrared light, and can be attached to the mirror housing in an integral manner.Type: ApplicationFiled: April 26, 2005Publication date: November 3, 2005Inventors: Teiichiro Takano, Yoshifumi Kawaguchi, Junji Nishiyama, Takeaki Okamura
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Patent number: 6575608Abstract: A vehicle light can include a multi-reflex optical system having a light source, a first reflecting surface system and a second reflecting surface system. The first reflecting surface system can include a parabolic group reflecting surface, an ellipse group reflecting surface or combination thereof. The second reflecting surface system can include an ellipse group reflecting surface having a first focus located approximately on the light source and a second focus. The ellipse group reflecting surface can be located such that it covers the front of the light source and collects light rays emitted from the light source directed to its second focus. The second reflecting surface system can include a parabolic group reflecting surface having a focus in the vicinity of the second focus of the ellipse group reflecting surface, and an adjusting reflecting plate located in the vicinity of the second focus of the ellipse group reflecting surface.Type: GrantFiled: May 31, 2001Date of Patent: June 10, 2003Assignee: Stanley Electric Co., Ltd.Inventors: Hiroo Oyama, Go Adachi, Takashi Akutagawa, Yoshifumi Kawaguchi
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Patent number: 6527426Abstract: A vehicle light having a multi-reflex optical system can include a light source, at least one pair of ellipse group reflecting surfaces located so as to substantially surround the light source. Each ellipse group reflecting surface can be symmetrical relative to the light source and have a first focus in the vicinity of the light source, a second focus, and a longitudinal axis perpendicular to an optical axis of the vehicle light. The same number of parabolic group reflecting surfaces as the ellipse group reflecting surfaces can be located substantially linearly, with each parabolic group reflecting surface having a focus on the second focus of the corresponding ellipse group reflecting surface and a longitudinal axis substantially parallel to the optical axis of the vehicle light.Type: GrantFiled: April 25, 2001Date of Patent: March 4, 2003Assignee: Stanley Electric Co., LTDInventors: Hiroo Oyama, Go Adachi, Masahito Okamoto, Yoshifumi Kawaguchi
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Patent number: 6471383Abstract: There is provided a headlamp for a vehicle, comprising a light source; a first reflector formed of a parabolic reflector and having a focal point at which the light source is positioned; a light guide passage to the backside of the first reflector; a second reflector formed of a parabolic reflector and provided outside thereof corresponding to the light guide passage of the first reflector; a third reflector provided in the vicinity of an optical axis of the first It reflector for converging and transmitting a light from the light source to the vicinity of the light guide passage; and a lens provided in front of the first and second reflectors. The headlamp for a vehicle has an improved luminous flux efficiency to the light source and also has a height of about 30 mm in vertical direction, which is an original design which has not conventionally been implemented.Type: GrantFiled: September 12, 2000Date of Patent: October 29, 2002Assignee: Stanley Electric Co., Ltd.Inventors: Hiroo Oyama, Yoshifumi Kawaguchi, Go Adachi, Masahito Okamoto
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Patent number: 6457850Abstract: A vehicle lamp can include a tube-like lamp element that has an aperture, a reflector having a focus located approximately at the aperture, and a front lens. The lamp can be disposed in a vehicle body space that has a small width from the front view and a small depth from a side view of the vehicle body. A blind or shade is not necessary to cover non-aesthetic portions of the lamp. The lamp can be tube-like in shape and can include an optical system that has at least two ellipse group reflecting surfaces that are combined to form a multi-reflex optical system. An aperture can be formed by the reflecting surfaces to allow light rays to be guided outside of the lamp. A light source is preferably located on a common first focus of the at least two ellipse group reflecting surfaces. One of the ellipse group reflecting surfaces can have a longer focal distance than, and a different longitudinal direction from, those of other ellipse group reflecting surface(s).Type: GrantFiled: March 26, 2001Date of Patent: October 1, 2002Assignee: Stanley Electric Co., Ltd.Inventors: Hiroo Oyama, Takashi Akutagawa, Yoshifumi Kawaguchi, Go Adachi
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Publication number: 20020120579Abstract: An object of the present invention is to provide a method and system for automatically updating a license period of a program. A method comprises the steps of: determining whether the current date and time is within a license period of the program; issuing a request to an index server for transmission of an index file; receiving the index file from the index server; issuing an authentication request with an address of an authentication server contained in the index file; receiving authentication information from the authentication server; updating the license period of the program when the authentication is successful; and executing the program.Type: ApplicationFiled: February 28, 2002Publication date: August 29, 2002Applicant: International Business Machines CorporationInventors: Yoshifumi Kawaguchi, Katsuhiro Nakagaki
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Patent number: 6431737Abstract: A lamp having a multi-reflex optical system can include a first ellipse group reflector and a third ellipse group reflector each sharing one light source at a first focal point, with a second focal point of the first reflector being above its first focal point and a second focal point of the third reflector being positioned below its first focal point. A parabolic group second reflector can be positioned above the first reflector and can have a focal point located at the second focal point of the first reflector. A parabolic group fourth reflector can be positioned below the third reflector and can have a focus at the second focal point of the third reflector. Light from the light source that is converged by the ellipse group first reflector and third reflector is then supplied to the parabolic group second and fourth reflectors to provide a bright oblong headlamp.Type: GrantFiled: March 24, 2000Date of Patent: August 13, 2002Assignee: Stanley Electric Co., Ltd.Inventors: Hiroo Oyama, Yoshifumi Kawaguchi, Takashi Akutagawa
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Patent number: 6419380Abstract: A vehicle light can include a light source, at least one first elliptic group reflecting surface shaped as half of an elliptical surface (after either an upper or lower substantial half of the substantial ellipse is cut-off). The first elliptic group reflecting surface can have its longitudinal axis on an optical axis of the vehicle light, and a first focus located in the vicinity of the light source. Two second elliptic group reflecting surfaces can be provided that are shaped as substantial halves of elliptical surfaces (after either upper or lower substantial halves of substantial ellipses are cut-off). The second elliptic group reflecting surfaces can have longitudinal axes that are substantially perpendicular to the optical axis of the vehicle light, and their first foci can be located in the vicinity of the light source.Type: GrantFiled: March 30, 2001Date of Patent: July 16, 2002Assignee: Stanley Electric Co., Ltd.Inventors: Hiroo Oyama, Go Adachi, Yoshifumi Kawaguchi, Takashi Akutagawa
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Publication number: 20020015312Abstract: A vehicle light can include a multi-reflex optical system having a light source, a first reflecting surface system and a second reflecting surface system. The first reflecting surface system can include a parabolic group reflecting surface, an ellipse group reflecting surface or combination thereof. The second reflecting surface system can include an ellipse group reflecting surface having a first focus located approximately on the light source and a second focus. The ellipse group reflecting surface can be located such that it covers the front of the light source and collects light rays emitted from the light source directed to its second focus. The second reflecting surface system can include a parabolic group reflecting surface having a focus in the vicinity of the second focus of the ellipse group reflecting surface, and an adjusting reflecting plate located in the vicinity of the second focus of the ellipse group reflecting surface.Type: ApplicationFiled: May 31, 2001Publication date: February 7, 2002Inventors: Hiroo Oyama, Go Adachi, Takashi Akutagawa, Yoshifumi Kawaguchi
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Publication number: 20010046138Abstract: A vehicle light having a multi-reflex optical system can include a light source, at least one pair of ellipse group reflecting surfaces located so as to substantially surround the light source. Each ellipse group reflecting surface can be symmetrical relative to the light source and have a first focus in the vicinity of the light source, a second focus, and a longitudinal axis perpendicular to an optical axis of the vehicle light. The same number of parabolic group reflecting surfaces as the ellipse group reflecting surfaces can be located substantially linearly, with each parabolic group reflecting surface having a focus on the second focus of the corresponding ellipse group reflecting surface and a longitudinal axis substantially parallel to the optical axis of the vehicle light.Type: ApplicationFiled: April 25, 2001Publication date: November 29, 2001Inventors: Hiroo Oyama, Go Adachi, Masahito Okamoto, Yoshifumi Kawaguchi
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Publication number: 20010046137Abstract: A vehicle light can include a light source, at least one first elliptic group reflecting surface shaped as half of an elliptical surface (after either an upper or lower substantial half of the substantial ellipse is cut-off). The first elliptic group reflecting surface can have its longitudinal axis on an optical axis of the vehicle light, and a first focus located in the vicinity of the light source. Two second elliptic group reflecting surfaces can be provided that are shaped as substantial halves of elliptical surfaces (after either upper or lower substantial halves of substantial ellipses are cut-off). The second elliptic group reflecting surfaces can have longitudinal axes that are substantially perpendicular to the optical axis of the vehicle light, and their first foci can be located in the vicinity of the light source.Type: ApplicationFiled: March 30, 2001Publication date: November 29, 2001Inventors: Hiroo Oyama, Go Adachi, Yoshifumi Kawaguchi, Takashi Akutagawa
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Publication number: 20010026457Abstract: A vehicle lamp can include a tube-like lamp element that has an aperture, a reflector having a focus located approximately at the aperture, and a front lens. The lamp can be disposed in a vehicle body space that has a small width from the front view and a small depth from a side view of the vehicle body. A blind or shade is not necessary to cover non-aesthetic portions of the lamp. The lamp can be tube-like in shape and can include an optical system that has at least two ellipse group reflecting surfaces that are combined to form a multi-reflex optical system. An aperture can be formed by the reflecting surfaces to allow light rays to be guided outside of the lamp. A light source is preferably located on a common first focus of the at least two ellipse group reflecting surfaces. One of the ellipse group reflecting surfaces can have a longer focal distance than, and a different longitudinal direction from, those of other ellipse group reflecting surface(s).Type: ApplicationFiled: March 26, 2001Publication date: October 4, 2001Applicant: Stanley Electric Co., Ltd.Inventors: Hiroo Oyama, Takashi Akutagawa, Yoshifumi Kawaguchi, Go Adachi
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Patent number: D581084Type: GrantFiled: March 13, 2008Date of Patent: November 18, 2008Assignee: Stanley Electric Co., Ltd.Inventors: Yoshifumi Kawaguchi, Manabu Yatabe, Toshiyuki Kondo