Patents by Inventor Takumi Miyashita
Takumi Miyashita 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: 11841528Abstract: A linear light-emitting device including a substrate extending while being curved in a predetermined direction, a plurality of light-emitting elements arranged on the substrate in a predetermined direction, and a seal for sealing the plurality of light-emitting elements, wherein a luminance of a specific part of the substrate is higher than that of the other parts of the substrate.Type: GrantFiled: June 25, 2020Date of Patent: December 12, 2023Assignees: Citizen Electronics Co., Ltd., Citizen Watch Co., Ltd.Inventors: Takumi Miyashita, Ryo Tamura, Takahiro Shimizu, Takuma Horiuchi, Ryo Matsuura
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Patent number: 11754878Abstract: The backlight device has a substrate, a plurality of light emitting elements disposed on a surface of the substrate, a diffuser plate having an incident surface disposed facing to the surface of the substrate, and an emitting surface disposed on the opposite side of the incident surface, diffuses light incident on the incident surface from the plurality of light emitting elements, and emits the diffused light from the emitting surface, and a frame defining a light emitting region on which the plurality of light emitting elements are disposed, wherein the frame is disposed so as not to form a region less than the half value outside the light emitting elements disposed along the frame, and all of the plurality of light emitting elements are disposed so that a ratio less than the half value is 20% or less, the ratio less than the half value is a ratio of an area of the region less than the half value to an area of a surrounding region formed by connecting at least three light emitting elements disposed around thType: GrantFiled: April 1, 2022Date of Patent: September 12, 2023Assignee: NICHIA CORPORATIONInventors: Toshinobu Katsumata, Takumi Miyashita, Kiyokazu Watanabe, Takuma Horiuchi
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Patent number: 11681181Abstract: The backlight device has a substrate, a plurality of light emitting elements disposed on a surface of the substrate, a diffuser plate having an incident surface disposed facing to the surface of the substrate, and an emitting surface disposed on the opposite side of the incident surface, diffuses light incident on the incident surface from the plurality of light emitting elements, and emits the diffused light from the emitting surface, and a frame defining a light emitting region on which the plurality of light emitting elements are disposed, wherein the frame is disposed so as not to form a region less than the half value outside the light emitting elements disposed along the frame, and all of the plurality of light emitting elements are disposed so that a ratio less than the half value is 20% or less, the ratio less than the half value is a ratio of an area of the region less than the half value to an area of a surrounding region formed by connecting at least three light emitting elements disposed around thType: GrantFiled: August 21, 2019Date of Patent: June 20, 2023Assignee: NICHIA CORPORATIONInventors: Toshinobu Katsumata, Takumi Miyashita, Kiyokazu Watanabe, Takuma Horiuchi
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Patent number: 11675230Abstract: To provide a backlight that reduces the number of LEDs used while facilitating the attempt to make the backlight smaller in thickness. On a mount substrate (11), LEDs (13) are mounted in a square lattice arrangement. Over a portion near the center of each unit of the square lattice, protrusions (15) of a diffusion plate (14) are disposed. Among light emitted from the LEDs (13), light traveling in lateral directions between the mount substrate (11) and the diffusion plate (14) is captured by the protrusions (15). The captured light is refracted and reflected by the interfaces of the protrusions (15), and diffused due to diffusing particles, with the result that the light is turned into upward illumination light.Type: GrantFiled: October 21, 2022Date of Patent: June 13, 2023Assignee: NICHIA CORPORATIONInventors: Takuma Horiuchi, Takumi Miyashita, Kiyokazu Watanabe
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Publication number: 20230044687Abstract: To provide a backlight that reduces the number of LEDs used while facilitating the attempt to make the backlight smaller in thickness. On a mount substrate (11), LEDs (13) are mounted in a square lattice arrangement. Over a portion near the center of each unit of the square lattice, protrusions (15) of a diffusion plate (14) are disposed. Among light emitted from the LEDs (13), light traveling in lateral directions between the mount substrate (11) and the diffusion plate (14) is captured by the protrusions (15). The captured light is refracted and reflected by the interfaces of the protrusions (15), and diffused due to diffusing particles, with the result that the light is turned into upward illumination light.Type: ApplicationFiled: October 21, 2022Publication date: February 9, 2023Inventors: Takuma HORIUCHI, Takumi MIYASHITA, Kiyokazu WATANABE
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Patent number: 11506935Abstract: To provide a backlight that reduces the number of LEDs used while facilitating the attempt to make the backlight smaller in thickness. On a mount substrate (11), LEDs (13) are mounted in a square lattice arrangement. Over a portion near the center of each unit of the square lattice, protrusions (15) of a diffusion plate (14) are disposed. Among light emitted from the LEDs (13), light traveling in lateral directions between the mount substrate (11) and the diffusion plate (14) is captured by the protrusions (15). The captured light is refracted and reflected by the interfaces of the protrusions (15), and diffused due to diffusing particles, with the result that the light is turned into upward illumination light.Type: GrantFiled: May 25, 2021Date of Patent: November 22, 2022Assignee: NICHIA CORPORATIONInventors: Takuma Horiuchi, Takumi Miyashita, Kiyokazu Watanabe
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Publication number: 20220252777Abstract: A linear light-emitting device including a substrate extending while being curved in a predetermined direction, a plurality of light-emitting elements arranged on the substrate in a predetermined direction, and a seal for sealing the plurality of light-emitting elements, wherein a luminance of a specific part of the substrate is higher than that of the other parts of the substrate.Type: ApplicationFiled: June 25, 2020Publication date: August 11, 2022Inventors: Takumi MIYASHITA, Ryo TAMURA, Takahiro SHIMIZU, Takuma HORIUCHI, Ryo MATSUURA
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Publication number: 20220221761Abstract: The backlight device has a substrate, a plurality of light emitting elements disposed on a surface of the substrate, a diffuser plate having an incident surface disposed facing to the surface of the substrate, and an emitting surface disposed on the opposite side of the incident surface, diffuses light incident on the incident surface from the plurality of light emitting elements, and emits the diffused light from the emitting surface, and a frame defining a light emitting region on which the plurality of light emitting elements are disposed, wherein the frame is disposed so as not to form a region less than the half value outside the light emitting elements disposed along the frame, and all of the plurality of light emitting elements are disposed so that a ratio less than the half value is 20% or less, the ratio less than the half value is a ratio of an area of the region less than the half value to an area of a surrounding region formed by connecting at least three light emitting elements disposed around thType: ApplicationFiled: April 1, 2022Publication date: July 14, 2022Inventors: Toshinobu KATSUMATA, Takumi MIYASHITA, Kiyokazu WATANABE, Takuma HORIUCHI
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Publication number: 20210341793Abstract: The backlight device has a substrate, a plurality of light emitting elements disposed on a surface of the substrate, a diffuser plate having an incident surface disposed facing to the surface of the substrate, and an emitting surface disposed on the opposite side of the incident surface, diffuses light incident on the incident surface from the plurality of light emitting elements, and emits the diffused light from the emitting surface, and a frame defining a light emitting region on which the plurality of light emitting elements are disposed, wherein the frame is disposed so as not to form a region less than the half value outside the light emitting elements disposed along the frame, and all of the plurality of light emitting elements are disposed so that a ratio less than the half value is 20% or less, the ratio less than the half value is a ratio of an area of the region less than the half value to an area of a surrounding region formed by connecting at least three light emitting elements disposed around thType: ApplicationFiled: August 21, 2019Publication date: November 4, 2021Inventors: Toshinobu KATSUMATA, Takumi MIYASHITA, Kiyokazu WATANABE, Takuma HORIUCHI
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Publication number: 20210278723Abstract: To provide a backlight that reduces the number of LEDs used while facilitating the attempt to make the backlight smaller in thickness. On a mount substrate (11), LEDs (13) are mounted in a square lattice arrangement. Over a portion near the center of each unit of the square lattice, protrusions (15) of a diffusion plate (14) are disposed. Among light emitted from the LEDs (13), light traveling in lateral directions between the mount substrate (11) and the diffusion plate (14) is captured by the protrusions (15). The captured light is refracted and reflected by the interfaces of the protrusions (15), and diffused due to diffusing particles, with the result that the light is turned into upward illumination light.Type: ApplicationFiled: May 25, 2021Publication date: September 9, 2021Inventors: Takuma HORIUCHI, Takumi MIYASHITA, Kiyokazu WATANABE
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Patent number: 11054700Abstract: To provide a backlight that reduces the number of LEDs used while facilitating the attempt to make the backlight smaller in thickness. On amount substrate (11), LEDs (13) are mounted in a square lattice arrangement. Over a portion near the center of each unit of the square lattice, protrusions (15) of a diffusion plate (14) are disposed. Among light emitted from the LEDs (13), light traveling in lateral directions between the mount substrate (11) and the diffusion plate (14) is captured by the protrusions (15). The captured light is refracted and reflected by the interfaces of the protrusions (15), and diffused due to diffusing particles, with the result that the light is turned into upward illumination light.Type: GrantFiled: April 23, 2018Date of Patent: July 6, 2021Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.Inventors: Takuma Horiuchi, Takumi Miyashita, Kiyokazu Watanabe
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Publication number: 20210109405Abstract: To provide a backlight that reduces the number of LEDs used while facilitating the attempt to make the backlight smaller in thickness. On amount substrate (11), LEDs (13) are mounted in a square lattice arrangement. Over a portion near the center of each unit of the square lattice, protrusions (15) of a diffusion plate (14) are disposed. Among light emitted from the LEDs (13), light traveling in lateral directions between the mount substrate (11) and the diffusion plate (14) is captured by the protrusions (15). The captured light is refracted and reflected by the interfaces of the protrusions (15), and diffused due to diffusing particles, with the result that the light is turned into upward illumination light.Type: ApplicationFiled: April 23, 2018Publication date: April 15, 2021Inventors: Takuma HORIUCHI, Takumi MIYASHITA, Kiyokazu WATANABE
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Patent number: 10001672Abstract: A side edge planar lighting unit includes a light emitting diode, a light guide plate, and a transparent flexible resin between the light emitting diode and the light guide plate. The light emitting diode and the light guide plate are brought into close contact by the transparent flexible resin. The light guide plate includes a light exit face on a first main surface, a reflective face on a side opposite the light exit face, and a recessed portion in a first side edge. The recessed portion includes the light entrance face on a bottom surface, a pair of light entrance side faces facing each other across the light entrance face, and an anti-slip portion made of an uneven structure on at least one of the light entrance side faces. The transparent flexible resin is fitted in the recessed portion of the light guide plate.Type: GrantFiled: October 26, 2017Date of Patent: June 19, 2018Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.Inventors: Kiyokazu Watanabe, Yoshihiro Sho, Naoya Kashiwagi, Takashi Watanabe, Takumi Miyashita, Toshinobu Katsumata, Takuma Horiuchi, Junji Miyashita, Tomoo Udagawa, Kazuhiro Uwajima
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Publication number: 20180120643Abstract: A side edge planar lighting unit includes a light emitting diode, a light guide plate, and a transparent flexible resin between the light emitting diode and the light guide plate. The light emitting diode and the light guide plate are brought into close contact by the transparent flexible resin. The light guide plate includes a light exit face on a first main surface, a reflective face on a side opposite the light exit face, and a recessed portion in a first side edge. The recessed portion includes the light entrance face on a bottom surface, a pair of light entrance side faces facing each other across the light entrance face, and an anti-slip portion made of an uneven structure on at least one of the light entrance side faces. The transparent flexible resin is fitted in the recessed portion of the light guide plate.Type: ApplicationFiled: October 26, 2017Publication date: May 3, 2018Inventors: Kiyokazu WATANABE, Yoshihiro SHO, Naoya KASHIWAGI, Takashi WATANABE, Takumi MIYASHITA, Toshinobu KATSUMATA, Takuma HORIUCHI, Junji MIYASHITA, Tomoo UDAGAWA, Kazuhiro UWAJIMA
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Patent number: 9291764Abstract: A light-emitting package allowing light to enter a thin lightguide plate efficiently has a package substrate 11, light-emitting elements 2 mounted on the package substrate, a transparent resin part 12 sealing the light-emitting elements on the package substrate, a cut portion 12a formed in the transparent resin part in parallel to the package substrate so as to be able to receive a side edge surface of a lightguide plate, and a reflecting layer 13 formed on the entire surface of the transparent resin part except the cut portion.Type: GrantFiled: December 5, 2007Date of Patent: March 22, 2016Assignee: Citizen Electronics Co., Ltd.Inventors: Junji Miyashita, Takumi Miyashita
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Patent number: 9022615Abstract: A light-emitting module of the present invention comprises: a light source in which an LED element is disposed on a substrate and electrodes electrically connected to the LED element are provided on the substrate; a metal plate on which the light source is disposed; lead wires connected to the electrodes directly or via other electrode pattern; and a housing made of resin fixed onto the metal plate and housing the light source therein. Moreover, the housing includes a hole opening above the light source, and includes at least one pair of protrusions that protrude facing one another inside the hole and apply a bias to the light source to press the light source onto a metal plate side.Type: GrantFiled: October 24, 2011Date of Patent: May 5, 2015Assignees: Citizen Electronics Co., Ltd., Citizen Holdings Co., Ltd.Inventors: Takumi Miyashita, Ichiro Miyashita, Ken Kobayashi
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Publication number: 20150035608Abstract: A distortion compensating apparatus includes: a memory; and a processor coupled to the memory and configured to: calculate a transient response of a power source circuit, in accordance with an estimated value of a current to be consumed by an amplifier based on a signal to be amplified by the amplifier, and in accordance with an objective supply voltage, based on the signal, of a voltage to be supplied to the amplifier from the power source circuit, and correct the signal to be input to the amplifier based on a difference caused by the transient response from the objective supply voltage.Type: ApplicationFiled: July 30, 2014Publication date: February 5, 2015Inventors: Takumi MIYASHITA, Takeshi TAKANO
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Patent number: 8824592Abstract: A modulated impulse generating apparatus includes a source signal generator that generates a source signal, a first oscillation unit that, when activated, a signal having extracts a desired frequency component from the source signal generated by the source signal generator and causes amplitude of the extracted signal to increase, a second oscillation unit that, receives input of a signal caused to increase by the first oscillation unit, and that, when activated, causes amplitude of the input signal to increase together with the first oscillation unit and outputs a modulated impulse modulated wave, and an activation unit that activates the first oscillation unit after the source signal generated by the source signal generator has been input to the first oscillation unit and activates the second oscillation unit after a certain time period has elapsed and oscillation amplitude of the input signal has increased.Type: GrantFiled: March 25, 2013Date of Patent: September 2, 2014Assignee: Fujitsu LimitedInventor: Takumi Miyashita
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Publication number: 20140019926Abstract: A determining unit determines parameters indicating a relation among voltages and currents at input and output of each of a non-linear device model provided in a high frequency circuit model having a non-linear device and a circuit model of a passive element connected to the non-linear device model. A calculating unit calculates amplitude and phase of a voltage source providing a fundamental wave of an equivalent circuit model, based on an input power and an impedance matching condition preliminarily determined by a designer and parameters determined by the determining unit. In addition, the calculating unit calculates amplitude and phase of a voltage source providing a harmonic wave of the equivalent circuit model, based on a harmonic termination condition preliminarily determined by the designer and the parameters determined by the determining unit.Type: ApplicationFiled: September 12, 2013Publication date: January 16, 2014Applicant: Fujitsu LimitedInventor: Takumi MIYASHITA
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Publication number: 20130301752Abstract: A modulated impulse generating apparatus includes a source signal generator that generates a source signal, a first oscillation unit that, when activated, a signal having extracts a desired frequency component from the source signal generated by the source signal generator and causes amplitude of the extracted signal to increase, a second oscillation unit that, receives input of a signal caused to increase by the first oscillation unit, and that, when activated, causes amplitude of the input signal to increase together with the first oscillation unit and outputs a modulated impulse modulated wave, and an activation unit that activates the first oscillation unit after the source signal generated by the source signal generator has been input to the first oscillation unit and activates the second oscillation unit after a certain time period has elapsed and oscillation amplitude of the input signal has increased.Type: ApplicationFiled: March 25, 2013Publication date: November 14, 2013Applicant: FUJITSU LIMITEDInventor: Takumi Miyashita