Patents by Inventor Tatsuaki Inoue
Tatsuaki Inoue 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: 20230305333Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: ApplicationFiled: June 1, 2023Publication date: September 28, 2023Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yosuke UEBA, Tatsuaki INOUE
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Patent number: 11733563Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: GrantFiled: November 22, 2022Date of Patent: August 22, 2023Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yosuke Ueba, Tatsuaki Inoue
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Publication number: 20230077729Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: ApplicationFiled: November 22, 2022Publication date: March 16, 2023Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yosuke UEBA, Tatsuaki INOUE
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Patent number: 11513391Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: GrantFiled: March 15, 2022Date of Patent: November 29, 2022Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yosuke Ueba, Tatsuaki Inoue
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Publication number: 20220197089Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: ApplicationFiled: March 15, 2022Publication date: June 23, 2022Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yosuke UEBA, Tatsuaki INOUE
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Patent number: 11333925Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: GrantFiled: March 8, 2021Date of Patent: May 17, 2022Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yosuke Ueba, Tatsuaki Inoue
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Publication number: 20210191196Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: ApplicationFiled: March 8, 2021Publication date: June 24, 2021Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yosuke UEBA, Tatsuaki INOUE
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Patent number: 11016342Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: GrantFiled: June 3, 2020Date of Patent: May 25, 2021Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yosuke Ueba, Tatsuaki Inoue
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Publication number: 20200292883Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: ApplicationFiled: June 3, 2020Publication date: September 17, 2020Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yosuke UEBA, Tatsuaki INOUE
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Patent number: 10747054Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: GrantFiled: April 19, 2018Date of Patent: August 18, 2020Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yosuke Ueba, Tatsuaki Inoue
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Patent number: 10641448Abstract: An object is to provide a daylighting sheet which efficiently performs daylighting and in which, when the daylighting sheet is applied to a window of a building or the like, it is possible to see an outdoor side. The daylighting sheet includes a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light, each of which including a groove at a portion being in a light entering side in a position where the light transmission portion is arranged in the opening portion of a building; and light deflection portions that are formed between the light transmission portions and filled with a material whose refractive index is lower than that of the light transmission portions.Type: GrantFiled: September 10, 2018Date of Patent: May 5, 2020Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi Kashiwagi, Kazunobu Ogawa, Hideki Miyata, Tatsuaki Inoue, Hiroshi Kojima
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Publication number: 20200124909Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.Type: ApplicationFiled: April 19, 2018Publication date: April 23, 2020Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yosuke UEBA, Tatsuaki INOUE
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Publication number: 20190093840Abstract: An object is to provide a daylighting sheet which efficiently performs daylighting and in which, when the daylighting sheet is applied to a window of a building or the like, it is possible to see an outdoor side. The daylighting sheet includes a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light, each of which including a groove at a portion being in a light entering side in a position where the light transmission portion is arranged in the opening portion of a building; and light deflection portions that are formed between the light transmission portions and filled with a material whose refractive index is lower than that of the light transmission portions.Type: ApplicationFiled: September 10, 2018Publication date: March 28, 2019Inventors: Tsuyoshi KASHIWAGI, Kazunobu OGAWA, Hideki MIYATA, Tatsuaki INOUE, Hiroshi KOJIMA
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Patent number: 10100992Abstract: An object is to provide a daylighting sheet which efficiently performs daylighting and in which, when the daylighting sheet is applied to a window of a building or the like, it is possible to see an outdoor side. The daylighting sheet includes a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light, each of the light transmission portions including a portion that is convex upwards; and light deflection portions that are formed between the light transmission portions and filled with a material whose refractive index is lower than that of the light transmission portions.Type: GrantFiled: June 15, 2017Date of Patent: October 16, 2018Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi Kashiwagi, Kazunobu Ogawa, Hideki Miyata, Tatsuaki Inoue, Hiroshi Kojima
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Publication number: 20170284619Abstract: An object is to provide a daylighting sheet which efficiently performs daylighting and in which, when the daylighting sheet is applied to a window of a building or the like, it is possible to see an outdoor side. The daylighting sheet includes a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light, each of the light transmission portions including a portion that is convex upwards; and light deflection portions that are formed between the light transmission portions and filled with a material whose refractive index is lower than that of the light transmission port ions.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Inventors: Tsuyoshi KASHIWAGI, Kazunobu OGAWA, Hideki MIYATA, Tatsuaki INOUE, Hiroshi KOJIMA
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Patent number: 9708847Abstract: An object is to provide a daylighting sheet which efficiently performs daylighting and in which, when the daylighting sheet is applied to a window of a building or the like, it is possible to see an outdoor side. The daylighting sheet includes a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light, each of the light transmission portions including a portion that is convex upwards; and light deflection portions that are formed between the light transmission portions and filled with a material whose refractive index is lower than that of the light transmission portions.Type: GrantFiled: May 10, 2016Date of Patent: July 18, 2017Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi Kashiwagi, Kazunobu Ogawa, Hideki Miyata, Tatsuaki Inoue, Hiroshi Kojima
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Publication number: 20170003436Abstract: A surface light source device (20) includes a light guide plate (30), an optical sheet (60) and a light source (24). The optical sheet has unit prisms projecting toward the light guide plate and arranged in a first direction. The unit prism is composed of a first prism surface (71) facing the first direction, and a second prism surface (72) facing the other side of the first direction. The second prism surface (72) includes element surfaces (73) of different inclining angles. An inclining angle (?t) of each element surface, a length (Wt) of each element surface along the first direction and a length (Wb2) of the second prism surface (72) along the first direction satisfy predetermined conditions.Type: ApplicationFiled: March 27, 2015Publication date: January 5, 2017Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tatsuaki INOUE, Masahiro GOTOU, Hiroki MATSUSHITA
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Publication number: 20160251895Abstract: An object is to provide a daylighting sheet which efficiently performs daylighting and in which, when the daylighting sheet is applied to a window of a building or the like, it is possible to see an outdoor side. The daylighting sheet includes a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light, each of the light transmission portions including a portion that is convex upwards; and light deflection portions that are formed between the light transmission portions and filled with a material whose refractive index is lower than that of the light transmission portions.Type: ApplicationFiled: May 10, 2016Publication date: September 1, 2016Inventors: Tsuyoshi KASHIWAGI, Kazunobu OGAWA, Hideki MIYATA, Tatsuaki INOUE, Hiroshi KOJIMA
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Patent number: 9366403Abstract: A daylighting sheet is provided which efficiently performs daylighting and in which, when the daylighting sheet is applied to an opening portion, such as a window of a building, it is possible to see an outdoor side from an indoor side. The daylighting sheet is formed by stacking a plurality of layers, the layers include: a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light; and light deflection portions that are formed between the light transmission portions and deflect the light reaching the light deflection portions.Type: GrantFiled: March 21, 2013Date of Patent: June 14, 2016Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi Kashiwagi, Kazunobu Ogawa, Hideki Miyata, Tatsuaki Inoue, Hiroshi Kojima
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Publication number: 20150049387Abstract: A daylighting sheet is provided which efficiently performs daylighting and in which, when the daylighting sheet is applied to an opening portion, such as a window of a building, it is possible to see an outdoor side from an indoor side. The daylighting sheet is formed by stacking a plurality of layers, the layers include: a translucent base material layer; and a light deflection layer that is formed on the base material layer, and the light deflection layer includes: light transmission portions that are aligned along one surface of the base material layer so as to be able to transmit light; and light deflection portions that are formed between the light transmission portions and deflect the light reaching the light deflection portions.Type: ApplicationFiled: March 21, 2013Publication date: February 19, 2015Inventors: Tsuyoshi Kashiwagi, Kazunobu Ogawa, Hideki Miyata, Tatsuaki Inoue, Hiroshi Kojima