Patents by Inventor Akira Mizuyoshi
Akira Mizuyoshi 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: 8876706Abstract: According to an aspect of the invention, an endoscopic apparatus outputs illuminating light from a tip of an endoscope inserting module to a subject and detects a reflected light from the subject to obtain an image signal of the subject. The endoscopic apparatus includes a first light source, a second light source, a target light intensity setting module, a light intensity ratio setting module, an information storing module, an amplitude value setting module, a driving signal generating module, a signal supplying module.Type: GrantFiled: August 22, 2012Date of Patent: November 4, 2014Assignee: FUJIFILM CorporationInventors: Akira Mizuyoshi, Maki Saito, Takayuki Iida
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Patent number: 8858429Abstract: A lighting device includes first and second light sources, a wavelength converting member and a light quantity ratio changing unit. A first light source uses a semiconductor light emitting device as an emission source. A second light source uses, as an emission source, a semiconductor light emitting device of a different emission wavelength from the first light source. A wavelength converting member is excited for light emission by light emitted from at least one of the first light source and the second light source. The light quantity ratio changing unit changing a light quantity ratio between the light emitted from the first light source and the light emitted from the second light source.Type: GrantFiled: July 5, 2010Date of Patent: October 14, 2014Assignee: Fujifilm CorporationInventors: Akira Mizuyoshi, Takaaki Saito
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Patent number: 8814784Abstract: A lighting device includes first and second light sources, a wavelength converting member and a light quantity ratio changing unit. A first light source uses a semiconductor light emitting device as an emission source. A second light source uses, as an emission source, a semiconductor light emitting device of a different emission wavelength from the first light source. A wavelength converting member is excited for light emission by light emitted from at least one of the first light source and the second light source. The light quantity ratio changing unit changing a light quantity ratio between the light emitted from the first light source and the light emitted from the second light source.Type: GrantFiled: July 5, 2010Date of Patent: August 26, 2014Assignee: Fujifilm CorporationInventors: Akira Mizuyoshi, Takaaki Saito
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Patent number: 8790253Abstract: A light source device includes a first light source, a second light source having an emission wavelength that is different from the first light source, and a phosphor that is disposed to be distant from the first light source and the second light source and absorbs light in a predetermined excitation wavelength band to emit fluorescence. The phosphor is disposed on an emission light optical path that is shared by the first light source and the second light source. The emission wavelength of the first light source is in the predetermined excitation wavelength band. The emission wavelength of the second light source is outside of the predetermined excitation wavelength band.Type: GrantFiled: June 13, 2009Date of Patent: July 29, 2014Assignee: Fujifilm CorporationInventors: Hiroshi Sunagawa, Akira Mizuyoshi
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Publication number: 20140058201Abstract: An electronic endoscope device with enhanced heat resistance and durability is provided. In the electronic endoscope device, an optical member, and a frame body made of a material having a thermal expansion coefficient different from the optical member and holding the optical member are arranged at an insertion section to be inserted into a subject. The optical member and the frame body are connected to each other via adhesive layers of a three-layer structure having mutually different thermal expansion coefficients.Type: ApplicationFiled: October 30, 2013Publication date: February 27, 2014Applicant: FUJIFILM CorporationInventor: Akira MIZUYOSHI
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Patent number: 8593513Abstract: An image capturing apparatus includes: a light irradiation section that irradiates a subject with a plurality of irradiation light rays resulting from combining light rays having respectively different spectrum forms in respectively different combinations, at respectively different timings; and an image capturing section that captures a plurality of images of the subject irradiated with the plurality of irradiation light rays, at respectively different timings.Type: GrantFiled: April 1, 2009Date of Patent: November 26, 2013Assignee: Fujifilm CorporationInventors: Hiroshi Yamaguchi, Akira Mizuyoshi, Hiroshi Sunagawa
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Patent number: 8573824Abstract: The periphery of a fluorescent body is reliably sealed, and entry of moisture or volatilized gas is prevented. An illumination optical unit includes an optical fiber, a fluorescent body, a ferrule as a holding member holding the fluorescent body and the optical fiber, a tubular sleeve member that covers the outer periphery of the fluorescent body, and a protective cover. The ferrule holds the fluorescent body and is fitted into a fitting hole of the sleeve member. An inner peripheral face of the sleeve member and an outer peripheral face of the protective cover are bonded together to seal the distal end side of the fluorescent body, and the fitting hole of the sleeve member and an outer peripheral face of the ferrule are bonded together to bond the proximal end side of the fluorescent body.Type: GrantFiled: November 23, 2011Date of Patent: November 5, 2013Assignee: FUJIFILM CorporationInventors: Makito Komukai, Akira Mizuyoshi
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Patent number: 8506478Abstract: An illumination device for use in an endoscope includes a light source, an optical fiber and a wavelength conversion member. The optical fiber guides light to a tip end of an endoscope insertion portion of the endoscope. The wavelength conversion member is provided at an emission end of the optical fiber. The wavelength conversion member configured to be excited by the light source. The illumination device can provide white illumination light obtained by mixing light emitted from the optical fiber and light obtained by exciting the wavelength conversion member by the light emitted from the optical fiber. Also, the illumination device can provide illumination light being different from the white illumination light, by using other excitation light.Type: GrantFiled: June 4, 2009Date of Patent: August 13, 2013Assignee: Fujifilm CorporationInventor: Akira Mizuyoshi
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Publication number: 20130053642Abstract: According to an aspect of the invention, an endoscopic apparatus outputs illuminating light from a tip of an endoscope inserting module to a subject and detects a reflected light from the subject to obtain an image signal of the subject. The endoscopic apparatus includes a first light source, a second light source, a target light intensity setting module, a light intensity ratio setting module, an information storing module, an amplitude value setting module, a driving signal generating module, a signal supplying module.Type: ApplicationFiled: August 22, 2012Publication date: February 28, 2013Inventors: Akira MIZUYOSHI, Maki Saito, Takayuki IIDA
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Patent number: 8337400Abstract: An illumination device for use in an endoscope includes a light source, an optical fiber and a wavelength conversion member. The optical fiber guides light to a tip end of an endoscope insertion portion of the endoscope. The wavelength conversion member is provided at an emission end of the optical fiber. The wavelength conversion member configured to be excited by the light source. The illumination device can provide white illumination light obtained by mixing light emitted from the optical fiber and light obtained by exciting the wavelength conversion member by the light emitted from the optical fiber. Also, the illumination device can provide illumination light being different from the white illumination light, by using other excitation light.Type: GrantFiled: July 15, 2010Date of Patent: December 25, 2012Assignee: FUJIFILM CorporationInventor: Akira Mizuyoshi
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Patent number: 8251897Abstract: The endoscope light source device includes a semiconductor light source, optical fibers that are inserted into an endoscope, guide first light beams from the semiconductor light source, and are arranged in plural rows in at least an angle portion of the endoscope, an optical coupling circuit that is arranged at a distal end side of the endoscope with respect to the angle portion, and couples the first light beams guided by the optical fibers arranged in the plural rows to obtain a coupled light beam and a wavelength conversion part that is arranged at a distal end side of an endoscope insertion section in the optical coupling circuit, and converts a part or all of the coupled light beam from the optical coupling circuit into a converted light beam having a given wavelength by a phosphor.Type: GrantFiled: February 11, 2009Date of Patent: August 28, 2012Assignee: FUJIFILM CorporationInventor: Akira Mizuyoshi
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Publication number: 20120136212Abstract: The periphery of a fluorescent body is reliably sealed, and entry of moisture or volatilized gas is prevented. An illumination optical unit includes an optical fiber, a fluorescent body, a ferrule as a holding member holding the fluorescent body and the optical fiber, a tubular sleeve member that covers the outer periphery of the fluorescent body, and a protective cover. The ferrule holds the fluorescent body and is fitted into a fitting hole of the sleeve member. An inner peripheral face of the sleeve member and an outer peripheral face of the protective cover are bonded together to seal the distal end side of the fluorescent body, and the fitting hole of the sleeve member and an outer peripheral face of the ferrule are bonded together to bond the proximal end side of the fluorescent body.Type: ApplicationFiled: November 23, 2011Publication date: May 31, 2012Inventors: Makito KOMUKAI, Akira MIZUYOSHI
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Publication number: 20120136211Abstract: An adhesive disposed between a protective cover and a sleeve member is prevented from flowing in to a position where a fluorescent body should be originally arranged. An illumination optical unit includes an optical fiber, a fluorescent body, a ferrule as a holding member holding the fluorescent body and the optical fiber, a tubular sleeve member that covers the outer periphery of the fluorescent body, and a protective cover that seals the distal end of the sleeve member. The ferrule holds the fluorescent body and is fitted into a fitting hole of the sleeve member. Since glass beads are mixed into an adhesive that bonds the protective cover to a receiving portion of the sleeve member, excessive flow of the adhesive can be suppressed.Type: ApplicationFiled: November 17, 2011Publication date: May 31, 2012Inventors: Makito KOMUKAI, Akira Mizuyoshi
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Publication number: 20120116159Abstract: A lighting device includes first and second light sources, a wavelength converting member and a light quantity ratio changing unit. A first light source uses a semiconductor light emitting device as an emission source. A second light source uses, as an emission source, a semiconductor light emitting device of a different emission wavelength from the first light source. A wavelength converting member is excited for light emission by light emitted from at least one of the first light source and the second light source. The light quantity ratio changing unit changing a light quantity ratio between the light emitted from the first light source and the light emitted from the second light source.Type: ApplicationFiled: July 5, 2010Publication date: May 10, 2012Inventors: Akira Mizuyoshi, Takaaki Saito
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Publication number: 20110257483Abstract: A light source device includes: a light emission part in which a plurality of illuminants are arranged on a support body; a light guide member in which light emitted from the light emission part is introduced into an incidence surface at one end of the light guide member; and a light collecting member which is located between the light emission part and the light guide member. The light collecting member comprises a plurality of tapered columnar bodies tapered toward the incidence surface of the light guide member. The plurality of tapered columnar bodies are placed so that base end portions thereof are each opposed to an associated one of light emission surfaces of the illuminants. A light emission window is formed at a position of the device, which is opposed to the incidence surface of the light guide member.Type: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Applicant: FUJIFILM CORPORATIONInventors: Akira MIZUYOSHI, Kazuhiko NAKAMURA
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Publication number: 20110257484Abstract: A light source device includes: a light emission part in which a plurality of illuminants are arranged on a support body; a light guide member in which light emitted from the light emission part is introduced into an incidence surface at one end of the light guide member; and a light collecting member which is located between the light emission part and the light guide member. The light collecting member includes a plurality of tapered columnar bodies, which are placed so that tip portions thereof are opposed to the incidence surface of the light guide member and base end portions thereof are opposed to light emission surfaces of the illuminants. A selective translucent member for limiting transmission of an infrared component is located along an optical path leading from the light emission part to the incidence surface of the light guide member.Type: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Applicant: FUJIFILM CORPORATIONInventors: Akira MIZUYOSHI, Kazuhiko NAKAMURA
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Publication number: 20110184244Abstract: A medical equipment includes an optical connector that detachably connects a plug to a receptacle provided in an equipment main body to optically connect a plug-side optical fiber fixed to the plug and a receptacle-side optical fiber fixed to the receptacle. The plug and the receptacle have plural engagement pairs each having a protrusion that protrudes in an insertion direction of the plug and an engagement part that is adapted to be engaged with the protrusion. Engagement beginning positions of the engagement pairs where the protrusions and the engagement parts begin to engage are different along the insertion direction. Each engagement pair has a narrower engagement gap between the protrusion and the engagement part than that between the protrusion and the engagement part of any pair which begin to engage earlier as the plug is inserted than the protrusion and the engagement part of each engagement pair.Type: ApplicationFiled: December 28, 2010Publication date: July 28, 2011Applicant: FUJIFILM CORPORATIONInventors: Hiroto KAGAYA, Akira MIZUYOSHI, Takayuki IIDA
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Publication number: 20110077465Abstract: A medical apparatus includes an insertion unit and a light source which supplies light into the insertion unit. A surface of the insertion unit includes: a first and second irradiation portions, a second irradiation portions, and an observation window. wherein each of the first and second irradiation portions has a pair of irradiation windows which emits the light, wherein when a border line bisects a front end surface of the insertion unit through the center point of the observation window, the pair of the irradiation windows are disposed on the both side of the front end surface sandwiching the border line, and wherein a fluorescent body emitting light by the excitation of the light supplied from the light source unit is disposed behind each of optical paths, and the white light is formed by the light supplied to the first irradiation portions and emission in the fluorescent body.Type: ApplicationFiled: September 28, 2010Publication date: March 31, 2011Applicant: FUJIFILM CorporationInventors: Akira MIZUYOSHI, Hiroto Kagaya, Yuichi Torii, Takayuki Iida
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Publication number: 20110034770Abstract: An endoscopic device comprises: an illuminating unit which emits illuminating light from an endoscope tip portion, and includes a plurality of kinds of light sources different from one another in an emission wavelength; an imaging unit which obtains a pickup image of a region to be observed of a subject radiated with the illuminating light; and the color tone controlling unit which changes a color tone of the illuminating light by changing an output light quantity ratio among the plurality of kinds of light sources.Type: ApplicationFiled: August 10, 2010Publication date: February 10, 2011Applicant: FUJIFILM CORPORATIONInventors: Azuchi ENDO, Akira Mizuyoshi, Satoshi Ozawa, Akihiko Erikawa
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Publication number: 20100280322Abstract: An illumination device for use in an endoscope includes a light source, an optical fiber and a wavelength conversion member. The optical fiber guides light to a tip end of an endoscope insertion portion of the endoscope. The wavelength conversion member is provided at an emission end of the optical fiber. The wavelength conversion member configured to be excited by the light source. The illumination device can provide white illumination light obtained by mixing light emitted from the optical fiber and light obtained by exciting the wavelength conversion member by the light emitted from the optical fiber. Also, the illumination device can provide illumination light being different from the white illumination light, by using other excitation light.Type: ApplicationFiled: July 15, 2010Publication date: November 4, 2010Applicant: FUJIFILM CORPORATIONInventor: Akira MIZUYOSHI