Patents by Inventor Kouji Nishioka
Kouji Nishioka 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: 9119271Abstract: A lighting device is provided with a lighting unit including a light emitting element and fluorescent bodies, which emit light of different wavelengths when excited by light from the light emitting element. When a peak output value of emitted light is 100% in a range of 440-465 nm, the lighting unit emits light having an output value at 500 nm that is 35%-55%, an output value at 550 nm that is 45%-80%, an output value at 600 nm that is 45%-75%, and an output value at 640 nm that is 50%-80%. The lighting unit emits light having a color temperature of 4500-5500 K and with the output value at 640 nm in a range of 100%-120% relative to the output value at 600 nm and in a range of 85%-130% relative to the output value at 550 nm.Type: GrantFiled: July 29, 2013Date of Patent: August 25, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Naoko Takei, Kouji Nishioka, Sayaka Nishi, Takashi Saito
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Publication number: 20140042895Abstract: A lighting device is provided with a lighting unit including a light emitting element and fluorescent bodies, which emit light of different wavelengths when excited by light from the light emitting element. When a peak output value of emitted light is 100% in a range of 440-465 nm, the lighting unit emits light having an output value at 500 nm that is 35%-55%, an output value at 550 nm that is 45%-80%, an output value at 600 nm that is 45%-75%, and an output value at 640 nm that is 50%-80%. The lighting unit emits light having a color temperature of 4500-5500 K and with the output value at 640 nm in a range of 100%-120% relative to the output value at 600 nm and in a range of 85%-130% relative to the output value at 550 nm.Type: ApplicationFiled: July 29, 2013Publication date: February 13, 2014Applicant: PANASONIC CORPORATIONInventors: Naoko TAKEI, Kouji NISHIOKA, Sayaka NISHI, Takashi SAITO
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Patent number: 8598608Abstract: A light emitting device includes a light emitting element, a first phosphor which emits a light by being excited by a light emitted from the light emitting element and a second phosphor which emits a light by being excited by the light emitted from the light emitting element and/or the light emitted from the first phosphor. The light emitted from the light emitting element, the light emitted from the first phosphor and the light emitted from the second phosphor are mixed to make an inclination angle of a line, on a chromaticity diagram, connecting a chromaticity coordinate of the light emitted from the first phosphor and a chromaticity coordinate of the light emitted from the light emitting element equal to an inclination angle of an isotemperature line of light of a predetermined color temperature.Type: GrantFiled: June 22, 2011Date of Patent: December 3, 2013Assignee: Panasonic CorporationInventors: Ikko Kuzuhara, Kouji Nishioka
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Patent number: 8587190Abstract: An illumination device includes an irradiation unit having a light emitting element and fluorescent bodies excited by the light from the light emitting element to radiate light of different wavelengths. The irradiation unit irradiates composite light of blue, green and red lights having half value widths of 20-40 nm, 110-150 nm and 80-110 nm and peak wavelengths of 440-465 nm, 545-555 nm and 630-650 nm, respectively. If the output value of the light in a wavelength 435-465 nm is assumed to be 100%, the output values of the lights having wavelengths of 490, 530 and 639 nm fall within 46-56%, 59-77% and 75-93%, respectively. The ratio of the output value of the light of 630 nm to that of the light of 530 nm falls within 73-86%.Type: GrantFiled: August 6, 2012Date of Patent: November 19, 2013Assignee: Panasonic CorporationInventors: Naoko Takei, Kouji Nishioka, Sayaka Yamaguchi, Takashi Saito
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Patent number: 8562132Abstract: In a photometry device, photopic vision luminance Lp is measured by a first luminance measuring unit including a first light filter 4 and a first photoelectric converter 5, and scotopic vision luminance Ls is measured by a second luminance measuring unit including a second light filter 6 and a second photoelectric converter 7. A calculation part 8 calculates mesopic vision luminance Lmes based on a measurement value (photopic vision luminance Lp) of the first luminance measuring unit and a ratio of a measurement value (scotopic vision luminance Ls) of the second luminance measuring unit to the measurement value (photopic vision luminance Lp) of the first luminance measuring unit. Consequently, the photometry device can improve measurement accuracy of the brightness (mesopic vision luminance) in mesopic vision.Type: GrantFiled: July 12, 2011Date of Patent: October 22, 2013Assignee: Panasonic CorporationInventors: Takashi Saito, Hiroki Noguchi, Naohiro Toda, Ayako Tsukitani, Kouji Nishioka, Akira Takasima, Kaoru Ibara, Kensuke Yamazoe, Hiroe Kubo, Yoshinori Karasawa
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Patent number: 8546823Abstract: A light emitting device includes a plurality of solid-state light emitting elements mounted on a substrate; and a wavelength converting unit covering the solid-state light emitting elements, the wavelength converting unit containing fluorescent materials. The solid-state light emitting elements include inner solid-state light emitting elements arranged in a central position of the substrate and outer solid-state light emitting elements arranged outwardly of the inner solid-state light emitting elements, and the wavelength converting unit is configured such that a probability that light propagating through the wavelength converting unit is brought into contact with the fluorescent materials in a portion of the wavelength converting unit covering the outer solid-state light emitting elements is lower than a probability that light propagating through the wavelength converting unit is brought into contact with the fluorescent materials in other portions.Type: GrantFiled: June 15, 2012Date of Patent: October 1, 2013Assignee: Panasonic CorporationInventors: Naoko Takei, Kouji Nishioka
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Publication number: 20130044456Abstract: An illumination device includes an irradiation unit having a light emitting element and fluorescent bodies excited by the light from the light emitting element to radiate light of different wavelengths. The irradiation unit irradiates composite light of blue, green and red lights having half value widths of 20-40 nm, 110-150 nm and 80-110 nm and peak wavelengths of 440-465 nm, 545-555 nm and 630-650 nm, respectively. If the output value of the light in a wavelength 435-465 nm is assumed to be 100%, the output values of the lights having wavelengths of 490, 530 and 639 nm fall within 46-56%, 59-77% and 75-93%, respectively. The ratio of the output value of the light of 630 nm to that of the light of 530 nm falls within 73-86%.Type: ApplicationFiled: August 6, 2012Publication date: February 21, 2013Applicant: Panasonic CorporationInventors: Naoko TAKEI, Kouji NISHIOKA, Sayaka YAMAGUCHI, Takashi SAITO
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Publication number: 20120319143Abstract: A light emitting device includes a plurality of solid-state light emitting elements mounted on a substrate; and a wavelength converting unit covering the solid-state light emitting elements, the wavelength converting unit containing fluorescent materials. The solid-state light emitting elements include inner solid-state light emitting elements arranged in a central position of the substrate and outer solid-state light emitting elements arranged outwardly of the inner solid-state light emitting elements, and the wavelength converting unit is configured such that a probability that light propagating through the wavelength converting unit is brought into contact with the fluorescent materials in a portion of the wavelength converting unit covering the outer solid-state light emitting elements is lower than a probability that light propagating through the wavelength converting unit is brought into contact with the fluorescent materials in other portions.Type: ApplicationFiled: June 15, 2012Publication date: December 20, 2012Applicant: PANASONIC CORPORATIONInventors: Naoko TAKEI, Kouji NISHIOKA
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Publication number: 20120119640Abstract: A light emitting device includes a first solid light-emitting element including a first light source for emitting blue light and a first fluorescent body excited by the blue light from the first light source to convert the blue light to light having a peak at wavelength between 630 nm and 680 nm and a second solid light-emitting element including a second light source for emitting blue light and a second fluorescent body excited by the blue light from the second light source to convert the blue light to light having a peak at wavelength between 500 nm and 550 nm.Type: ApplicationFiled: November 14, 2011Publication date: May 17, 2012Applicant: Panasonic Electric Works Co., Ltd.Inventors: KOUJI NISHIOKA, Naoko Takei
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Publication number: 20120075583Abstract: In a photometry device, photopic vision luminance Lp is measured by a first luminance measuring unit including a first light filter 4 and a first photoelectric converter 5, and scotopic vision luminance Ls is measured by a second luminance measuring unit including a second light filter 6 and a second photoelectric converter 7. A calculation part 8 calculates mesopic vision luminance Lmes based on a measurement value (photopic vision luminance Lp) of the first luminance measuring unit and a ratio of a measurement value (scotopic vision luminance Ls) of the second luminance measuring unit to the measurement value (photopic vision luminance Lp) of the first luminance measuring unit. Consequently, the photometry device can improve measurement accuracy of the brightness (mesopic vision luminance) in mesopic vision.Type: ApplicationFiled: July 12, 2011Publication date: March 29, 2012Applicant: Panasonic Electric Works Co., Ltd.Inventors: Takashi SAITO, Hiroki Noguchi, Naohiro Toda, Ayako Tsukitani, Kouji Nishioka, Akira Takasima, Kaoru Ibara, Kensuke Yamazoe, Hiroe Kubo, Yoshinori Karasawa
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Publication number: 20110316025Abstract: A light emitting device includes a light emitting element, a first phosphor which emits a light by being excited by a light emitted from the light emitting element and a second phosphor which emits a light by being excited by the light emitted from the light emitting element and/or the light emitted from the first phosphor. The light emitted from the light emitting element, the light emitted from the first phosphor and the light emitted from the second phosphor are mixed to make an inclination angle of a line, on a chromaticity diagram, connecting a chromaticity coordinate of the light emitted from the first phosphor and a chromaticity coordinate of the light emitted from the light emitting element equal to an inclination angle of an isotemperature line of light of a predetermined color temperature.Type: ApplicationFiled: June 22, 2011Publication date: December 29, 2011Applicant: Panasonic Electric Works Co., Ltd.Inventors: Ikko Kuzuhara, Kouji Nishioka
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Patent number: 7717589Abstract: A light emitting device comprises: an LED chip mounted in a recess formed in a mounting substrate; a wavelength converting member that is disposed so as to cover the recess and the edge area around the recess and that is excited by light emitted from the LED chip to emit light of a wavelength different from an excitation wavelength; and an emission control member disposed at a light output side of the wavelength converting member so as to allow emission of light coming from an area of the wavelength converting member that corresponds to the recess and to prevent emission of light coming from an area of the wavelength converting member that corresponds to the edge area around the recess. This can prevent variations in color between light emitted from the central part of the wavelength converting member and light emitted from the part of the wavelength converting member that is located on the edge area around the recess of the mounting substrate, thereby reducing unevenness of color on the irradiation surface.Type: GrantFiled: November 25, 2004Date of Patent: May 18, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Kouji Nishioka, Masaru Sugimoto, Hideyoshi Kimura, Ryoji Yokotani, Yutaka Iwahori, Takuma Hashmoto, Shinya Ishizaki, Satoshi Mori, Hiroyuki Sekii, Eiji Shiohama
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Publication number: 20080043376Abstract: A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.Type: ApplicationFiled: October 5, 2007Publication date: February 21, 2008Applicants: Hitachi, Ltd.Inventors: Takayoshi Ohtsu, Satoshi Shigematsu, Kouji Nishioka, Takao Imagawa, Kouji Kataoka, Masatoshi Arasawa, Norifumi Miyamoto
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Patent number: 7292416Abstract: A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.Type: GrantFiled: March 8, 2006Date of Patent: November 6, 2007Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Takayoshi Ohtsu, Satoshi Shigematsu, Kouji Nishioka, Takao Imagawa, Kouji Kataoka, Masatoshi Arasawa, Norifumi Miyamoto
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Publication number: 20070085103Abstract: A light emitting device comprises: an LED chip mounted in a recess formed in a mounting substrate; a wavelength converting member that is disposed so as to cover the recess and the edge area around the recess and that is excited by light emitted from the LED chip to emit light of a wavelength different from an excitation wavelength; and an emission control member disposed at a light output side of the wavelength converting member so as to allow emission of light coming from an area of the wavelength converting member that corresponds to the recess and to prevent emission of light coming from an area of the wavelength converting member that corresponds to the edge area around the recess. This can prevent variations in color between light emitted from the central part of the wavelength converting member and light emitted from the part of the wavelength converting member that is located on the edge area around the recess of the mounting substrate, thereby reducing unevenness of color on the irradiation surface.Type: ApplicationFiled: November 25, 2004Publication date: April 19, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Kouji Nishioka, Masaru Sugimoto, Hideyoshi Kimura, Ryoji Yokotani, Yutaka Iwahori, Takuma Hashmoto, Shinya Ishizaki, Satoshi Mori, Hiroyuki Sekii, Eiji Shiohama
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Publication number: 20060152864Abstract: A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.Type: ApplicationFiled: March 8, 2006Publication date: July 13, 2006Applicant: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Takayoshi Ohtsu, Satoshi Shigematsu, Kouji Nishioka, Takao Imagawa, Kouji Kataoka, Masatoshi Arasawa, Norifumi Miyamoto
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Patent number: 7031123Abstract: A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.Type: GrantFiled: September 11, 2003Date of Patent: April 18, 2006Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Takayoshi Ohtsu, Satoshi Shigematsu, Kouji Nishioka, Takao Imagawa, Kouji Kataoka, Masatoshi Arasawa, Norifumi Miyamoto
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Publication number: 20040052009Abstract: A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.Type: ApplicationFiled: September 11, 2003Publication date: March 18, 2004Applicant: Hitachi Global Storage TechnologiesInventors: Takayoshi Ohtsu, Satoshi Shigematsu, Kouji Nishioka, Takao Imagawa, Kouji Kataoka, Masatoshi Arasawa, Norifumi Miyamoto