Patents by Inventor Masayuki Ishiwata
Masayuki Ishiwata 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: 20240077658Abstract: To reduce unevenness in a luminance distribution in two directions of microlenses disposed in a form of a rectangular grid to improve uniformity of light distribution. Provided is a diffuser plate of a microlens array type including a base material, and a microlens array composed of a plurality of microlenses disposed on an X-Y plane on at least one surface of the base material using a rectangular grid as a reference, in which grid intervals Wx in an X direction of the microlenses disposed in the X direction of the rectangular grid are different from each other, grid intervals Wy in a Y direction of the microlenses disposed in the Y direction of the rectangular grid are different from each other, and surface shapes of the plurality of microlenses are different from each other.Type: ApplicationFiled: October 22, 2020Publication date: March 7, 2024Applicant: DEXERIALS CORPORATIONInventors: Mitsuo ARIMA, Masayuki ISHIWATA, Shunsuke KANASUGI
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DIFFUSION PLATE, DISPLAY DEVICE, PROJECTION DEVICE, LIGHTING DEVICE, AND REMOTE SENSING LIGHT SOURCE
Publication number: 20230384490Abstract: Spectral noise produced by a diffraction phenomenon of a periodic structure can be reduced to improve homogeneity of intensity of straight diffusion light, and noise of zero-order diffraction light is reduced to improve light distribution properties as well. A diffusion plate 1 of a microlens array type that emits straight diffusion light includes a base material 10, and a plurality of cylindrical lenses 21 arranged in an X direction on an X-Y plane of the base material 10 and composed of elongated convex portions or elongated concave portions extending in a Y direction.Type: ApplicationFiled: December 14, 2021Publication date: November 30, 2023Applicant: DEXERIALS CORPORATIONInventors: Mitsuo ARIMA, Masayuki ISHIWATA, Kazuhiko NODA, Shunsuke KANASUGI -
Patent number: 11726237Abstract: To provide a light diffuser plate that can control an anisotropic shape of diffused light. The light diffuser plate includes a base material, and a group structure including a plurality of convexities or concavities provided on at least one main surface of the base material and having anisotropic shapes extended in a common direction. The plurality of convexities or concavities are arranged randomly and densely on the main surface of the base material. A boundary between adjacent ones of the plurality of convexities or concavities includes a plurality of curved lines having curvatures different from each other.Type: GrantFiled: September 19, 2019Date of Patent: August 15, 2023Assignee: DEXERIALS CORPORATIONInventors: Mitsuo Arima, Masayuki Ishiwata
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Patent number: 11531144Abstract: To suppress, in an optical body in which a microlens array as a non-periodic structure is arranged and deployed in a wide range, occurrence of periodic optical properties in a structural unit larger than the non-periodic structure. The optical body includes a single non-periodic structure region or a collection of a plurality of non-periodic structure regions, the non-periodic structure region being composed of a single lens group including a plurality of single lenses. In the non-periodic structure region, a located state of the single lens group is non-periodic as a whole. A ratio of a size of the non-periodic structure region to an average aperture diameter of the single lenses in the non-periodic structure region is more than or equal to 25.Type: GrantFiled: December 5, 2017Date of Patent: December 20, 2022Assignee: DEXERIALS CORPORATIONInventors: Mitsuo Arima, Masayuki Ishiwata, Tsutomu Nagahama
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Publication number: 20210325574Abstract: To provide a light diffuser plate that can control an anisotropic shape of diffused light. The light diffuser plate includes a base material, and a group structure including a plurality of convexities or concavities provided on at least one main surface of the base material and having anisotropic shapes extended in a common direction. The plurality of convexities or concavities are arranged randomly and densely on the main surface of the base material. A boundary between adjacent ones of the plurality of convexities or concavities includes a plurality of curved lines having curvatures different from each other.Type: ApplicationFiled: September 19, 2019Publication date: October 21, 2021Applicant: DEXERIALS CORPORATIONInventors: Mitsuo ARIMA, Masayuki ISHIWATA
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Patent number: 10859735Abstract: There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve more even diffusion angle distribution properties, the diffuser plate being of a microlens array type, and including: a single lens group located on a surface of a transparent base material, in which aperture sizes and radii of curvatures of respective single lenses constituting the single lens group vary in the single lens group as a whole, and vertex positions of the respective single lenses are located irregularly, and energy distribution of light that transmits through the single lens group is substantially even in a predetermined diffusion angle range.Type: GrantFiled: September 30, 2016Date of Patent: December 8, 2020Assignee: DEXERIALS CORPORATIONInventors: Mitsuo Arima, Masayuki Ishiwata, Tsutomu Nagahama
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Publication number: 20190369297Abstract: To suppress, in an optical body in which a microlens array as a non-periodic structure is arranged and deployed in a wide range, occurrence of periodic optical properties in a structural unit larger than the non-periodic structure. The optical body includes a single non-periodic structure region or a collection of a plurality of non-periodic structure regions, the non-periodic structure region being composed of a single lens group including a plurality of single lenses. In the non-periodic structure region, a located state of the single lens group is non-periodic as a whole. A ratio of a size of the non-periodic structure region to an average aperture diameter of the single lenses in the non-periodic structure region is more than or equal to 25.Type: ApplicationFiled: December 5, 2017Publication date: December 5, 2019Applicant: DEXERIALS CORPORATIONInventors: Mitsuo ARIMA, Masayuki ISHIWATA, Tsutomu NAGAHAMA
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Publication number: 20180284326Abstract: There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve more even diffusion angle distribution properties, the diffuser plate being of a microlens array type, and including: a single lens group located on a surface of a transparent base material, in which aperture sizes and radii of curvatures of respective single lenses constituting the single lens group vary in the single lens group as a whole, and vertex positions of the respective single lenses are located irregularly, and energy distribution of light that transmits through the single lens group is substantially even in a predetermined diffusion angle range.Type: ApplicationFiled: September 30, 2016Publication date: October 4, 2018Applicant: DEXERIALS CORPORATIONInventors: Mitsuo ARIMA, Masayuki ISHIWATA, Tsutomu NAGAHAMA
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Patent number: 9119305Abstract: A transparent conductive element includes a base having a first surface and a second surface, and a transparent electrode pattern part and a transparent insulating pattern part formed on at least one of the first surface and the second surface. The transparent electrode pattern part and the transparent insulating pattern part are laid alternately on a base surface. Plural pore portions are randomly formed apart in the transparent electrode pattern part and plural island portions are randomly formed apart in the transparent insulating pattern part.Type: GrantFiled: April 21, 2014Date of Patent: August 25, 2015Assignee: DEXERIALS CORPORATIONInventors: Hidetoshi Takahashi, Mikihisa Mizuno, Masayuki Ishiwata
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Publication number: 20140285737Abstract: A transparent conductive element includes a base having a first surface and a second surface, and a transparent electrode pattern part and a transparent insulating pattern part formed on at least one of the first surface and the second surface. The transparent electrode pattern part and the transparent insulating pattern part are laid alternately on a base surface. Plural pore portions are randomly formed apart in the transparent electrode pattern part and plural island portions are randomly formed apart in the transparent insulating pattern part.Type: ApplicationFiled: April 21, 2014Publication date: September 25, 2014Applicant: DEXERIALS CORPORATIONInventors: Hidetoshi TAKAHASHI, Mikihisa MIZUNO, MASAYUKI ISHIWATA
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Patent number: 8741424Abstract: A transparent conductive element includes a base having a first surface and a second surface, and a transparent electrode pattern part and a transparent insulating pattern part formed on at least one of the first surface and the second surface. The transparent electrode pattern part and the transparent insulating pattern part are laid alternately on a base surface. Plural pore portions are randomly formed apart in the transparent electrode pattern part and. Plural island portions are randomly formed apart in the transparent insulating pattern part.Type: GrantFiled: July 12, 2011Date of Patent: June 3, 2014Assignee: Dexerials CorporationInventors: Hidetoshi Takahashi, Mikihisa Mizuno, Masayuki Ishiwata
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Patent number: 8547639Abstract: An optical element includes a substrate including protruding structures on the surface and a hard coat layer formed on the substrate. An irregular shape is formed by the structures. An irregular shape resembling the irregular shape of the substrate is formed on a surface of the hard coat layer and is smoother than the that of the substrate. The size of bottoms of the structures changes at random within the range of the minimum distance Rm to the maximum distance RM (Rm: minimum value of the shortest distance from the center of gravity of the bottom of the structure to the rim of the bottom, RM: maximum value of the longest distance from the center of gravity of the bottom of the structure to the rim of the bottom). Neighboring structures have bottoms in contact or substantially in contact with one another. Rm and RM satisfy Rm/RM?0.9.Type: GrantFiled: January 6, 2010Date of Patent: October 1, 2013Assignee: Sony CorporationInventors: Hitoshi Watanabe, Atsushi Uchida, Masayuki Ishiwata, Mikihisa Mizuno, Morio Tominaga, Eiki Ooyanagi
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Publication number: 20130189502Abstract: A transparent conductive element includes a base having a first surface and a second surface, and a transparent electrode pattern part and a transparent insulating pattern part formed on at least one of the first surface and the second surface. The transparent electrode pattern part and the transparent insulating pattern part are laid alternately on a base surface. Plural pore portions are randomly formed apart in the transparent electrode pattern part and. Plural island portions are randomly formed apart in the transparent insulating pattern part.Type: ApplicationFiled: July 12, 2011Publication date: July 25, 2013Applicant: DEXERIALS CORPORATIONInventors: Hidetoshi Takahashi, Mikihisa Mizuno, Masayuki Ishiwata
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Publication number: 20120228110Abstract: A transparent electrode element includes: a base substrate; a transparent conductive film which is formed on the base substrate; an electrode region which is formed using the transparent conductive film; and an insulation region which is a region adjacent to the electrode region and in which the transparent conductive film is separated in independent island shapes by groove patterns extending in random directions.Type: ApplicationFiled: March 1, 2012Publication date: September 13, 2012Applicant: Sony CorporationInventors: Hidetoshi Takahashi, Mikihasa Mizuno, Masayuki Ishiwata
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Publication number: 20100177398Abstract: An optical element includes a substrate including protruding structures on the surface and a hard coat layer formed on the substrate. An irregular shape is formed by the structures. An irregular shape resembling the irregular shape of the substrate is formed on a surface of the hard coat layer and is smoother than the that of the substrate. The size of bottoms of the structures changes at random within the range of the minimum distance Rm to the maximum distance RM (Rm: minimum value of the shortest distance from the center of gravity of the bottom of the structure to the rim of the bottom, RM: maximum value of the longest distance from the center of gravity of the bottom of the structure to the rim of the bottom). Neighboring structures have bottoms in contact or substantially in contact with one another. Rm and RM satisfy Rm/RM?0.9.Type: ApplicationFiled: January 6, 2010Publication date: July 15, 2010Applicant: SONY CORPORATIONInventors: Hitoshi Watanabe, Atsushi Uchida, Masayuki Ishiwata, Mikihisa Mizuno, Morio Tominaga, Eiki Ooyanagi
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Patent number: 5433498Abstract: With the trim connecting structure in accordance with the present invention, a quarter trim covering a quarter panel and the room inside of side sill comprises a trim body and a side scuff. The trim body is provided with a locking hole with different widths at the upper and lower ends, and the side scuff is provided with a locking claw having a notch so as to be elastically deformed inward in the width direction when the locking claw is inserted into the locking hole. The side scuff is locked into and fixed to the trim body by inserting the locking claw into the locking hole.Type: GrantFiled: December 1, 1993Date of Patent: July 18, 1995Assignee: Suzuki Motor CorporationInventor: Masayuki Ishiwata