Patents by Inventor Tsuyoshi Kashiwagi
Tsuyoshi Kashiwagi 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).
-
OPTICAL SHEET, LIGHT CONTROLLING MEMBER, SURFACE LIGHT SOURCE DEVICE, IMAGE SOURCE UNIT, AND DISPLAY
Publication number: 20230324735Abstract: To provide an optical sheet that makes it possible to efficiently control a light exiting angle as desired, an optical functional layer has a plurality of light transmissive portions extending in one direction, the light transmissive portions being arranged at intervals in a direction different from the one direction, and a light absorbing portion that is arranged between respective adjacent light transmissive portions, and the optical element layer extends so as to be offset from the one direction at an angle of 0° to 45° in a front view of the optical sheet, the optical element layer having a plurality of unit optical elements that are ridges aligned in a direction different from a direction in which the optical element layer extends.Type: ApplicationFiled: June 15, 2023Publication date: October 12, 2023Applicant: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi KASHIWAGI -
Optical sheet, light controlling member, surface light source device, image source unit, and display
Patent number: 11747669Abstract: To provide an optical sheet that makes it possible to efficiently control a light exiting angle as desired, an optical functional layer has a plurality of light transmissive portions extending in one direction, the light transmissive portions being arranged at intervals in a direction different from the one direction, and a light absorbing portion that is arranged between respective adjacent light transmissive portions, and the optical element layer extends so as to be offset from the one direction at an angle of 0° to 45° in a front view of the optical sheet, the optical element layer having a plurality of unit optical elements that are ridges aligned in a direction different from a direction in which the optical element layer extends.Type: GrantFiled: June 8, 2022Date of Patent: September 5, 2023Assignee: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi Kashiwagi -
Patent number: 11635562Abstract: An image source unit includes: a surface light source device including a reflective polarizing plate; a liquid crystal panel; and an optical sheet that is arranged between the surface light source device and the liquid crystal panel, the optical sheet including: an optical function layer that is laminated to one surface of a substrate layer; and a light diffuser layer that is arranged on one surface of the optical function layer, the one surface being on an opposite side of another surface of the optical function layer where the substrate layer is arranged across the optical function layer, the optical function layer including: light transmission parts that extend in a horizontal direction, and are arranged in a plurality of rows at predetermined intervals in a vertical direction; and light absorption parts that are formed between adjacent light transmission parts, and have a lower refractive index than that of the light transmission parts, wherein an angle formed by interfaces on upper sides of the light absType: GrantFiled: November 12, 2019Date of Patent: April 25, 2023Assignee: DAI NIPPON PRINTING CO., LTD.Inventor: Tsuyoshi Kashiwagi
-
Publication number: 20230093069Abstract: A display device includes a display panel that emits light from a plurality of pixels arrayed at predetermined pixel array pitches and an optical film, placed over the display panel so as to allow passage of light from the plurality of pixels, that includes first and second optical functional parts differing in optical performance from each other. The first and second optical functional parts are arrayed at predetermined functional part array pitches. Assuming that p (?m) denotes the pixel array pitches, that q (?m) denotes the functional part array pitches, and that d (?m) denotes a distance in a face-to-face direction between surfaces of the pixels that face the optical film and a surface of the optical film that faces the pixels, q?0.5p and tan(asin(0.7/q))<p/d hold.Type: ApplicationFiled: March 12, 2021Publication date: March 23, 2023Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tsuyoshi KASHIWAGI, Shinsuke NAKAZAWA, Takahiro TAKESHIMA
-
Publication number: 20230046640Abstract: An optical film includes a low-refractive-index layer that includes a plurality of lens portions, and a high-refractive-index layer that fills a space between the plurality of lens portions. The lens portions each have a columnar shape and have a flat portion at an end thereof, and are arranged two-dimensionally. Distances between portions of the lens portions satisfy the following equation: ((PA?((AIN+AEX)/2))×(PB?((BIN+BEX)/2)))/(PA×PB) is 0.42 or greater and 0.70 or less.Type: ApplicationFiled: January 13, 2021Publication date: February 16, 2023Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tsuyoshi KASHIWAGI, Takahiro TAKESHIMA
-
Publication number: 20220350053Abstract: An optical sheet 1 includes an optical function film 10 and protection films 20. The optical function film 10 includes an optical function layer 11. The optical function layer 11 includes optical-element portions that are of two or more different kinds and are arrayed in one direction. The protection films 20 each include a protection layer 21 and an adhesive layer 22. The protection films 20 are peelably provided on a pair of major surfaces of the optical function film with the adhesive layer 22. The protection films 20 extend externally beyond at least a part of the periphery of the optical function film 10. In the protection films, a portion that is beyond at least the part of the periphery of the optical function film 10 includes a portion of the adhesive layer 22.Type: ApplicationFiled: September 25, 2020Publication date: November 3, 2022Applicant: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi KASHIWAGI
-
OPTICAL SHEET, LIGHT CONTROLLING MEMBER, SURFACE LIGHT SOURCE DEVICE, IMAGE SOURCE UNIT, AND DISPLAY
Publication number: 20220299820Abstract: To provide an optical sheet that makes it possible to efficiently control a light exiting angle as desired, an optical functional layer has a plurality of light transmissive portions extending in one direction, the light transmissive portions being arranged at intervals in a direction different from the one direction, and a light absorbing portion that is arranged between respective adjacent light transmissive portions, and the optical element layer extends so as to be offset from the one direction at an angle of 0° to 45° in a front view of the optical sheet, the optical element layer having a plurality of unit optical elements that are ridges aligned in a direction different from a direction in which the optical element layer extends.Type: ApplicationFiled: June 8, 2022Publication date: September 22, 2022Applicant: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi KASHIWAGI -
Patent number: 11409157Abstract: A laminate including: a base material layer, an optical functional layer, and a polarizing plate; wherein the optical functional layer includes a plurality of light transmissive portions extending in one direction along a face of the base material layer, and arrayed in a direction different from an extending direction thereof, and an in-between portion(s) formed in the intervals of adjacent light transmissive portions, an angle formed by an extending direction of the transmission axis of the polarizing plate, and the extending direction of the light transmissive portions is 1° to 41.7° in a front view, the base material layer is formed of polycarbonate, and the average coefficient of linear expansion or the average linear expansion of the laminate is within a predetermined range.Type: GrantFiled: April 16, 2019Date of Patent: August 9, 2022Assignee: DAI NIPPON PRINTING CO., LTD.Inventor: Tsuyoshi Kashiwagi
-
Optical sheet, light controlling member, surface light source device, image source unit, and display
Patent number: 11378837Abstract: To provide an optical sheet that makes it possible to efficiently control a light exiting angle as desired, an optical functional layer has a plurality of light transmissive portions extending in one direction, the light transmissive portions being arranged at intervals in a direction different from the one direction, and a light absorbing portion that is arranged between respective adjacent light transmissive portions, and the optical element layer extends so as to be offset from the one direction at an angle of 0° to 45° in a front view of the optical sheet, the optical element layer having a plurality of unit optical elements that are ridges aligned in a direction different from a direction in which the optical element layer extends.Type: GrantFiled: March 30, 2018Date of Patent: July 5, 2022Assignee: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi Kashiwagi -
Patent number: 11256125Abstract: A laminate includes: a substrate layer; and an optical function layer that is layered on one surface of the substrate layer, and has a plurality of light transmission parts which are arranged in a row along a surface of the substrate layer so as to be light-transmissive, and light absorption parts in a row, each of which is arranged between adjacent ones of the light transmission parts so as to be light-absorptive, wherein on a cross section of the optical function layer in the layer thickness direction, a cross-sectional area of one of the light transmission parts to the total cross-sectional area of one of the light transmission parts and one of the light absorption parts which are adjacent to each other is 78.2% to 88.5%, and optical diffuse reflectances thereof satisfy predetermined values.Type: GrantFiled: July 25, 2019Date of Patent: February 22, 2022Assignee: DAI NIPPON PRINTING CO., LTD.Inventor: Tsuyoshi Kashiwagi
-
OPTICAL SHEET, LIGHT CONTROLLING MEMBER, SURFACE LIGHT SOURCE DEVICE, IMAGE SOURCE UNIT, AND DISPLAY
Publication number: 20210397041Abstract: To provide an optical sheet that makes it possible to efficiently control a light exiting angle as desired, an optical functional layer has a plurality of light transmissive portions extending in one direction, the light transmissive portions being arranged at intervals in a direction different from the one direction, and a light absorbing portion that is arranged between respective adjacent light transmissive portions, and the optical element layer extends so as to be offset from the one direction at an angle of 0° to 45° in a front view of the optical sheet, the optical element layer having a plurality of unit optical elements that are ridges aligned in a direction different from a direction in which the optical element layer extends.Type: ApplicationFiled: March 30, 2018Publication date: December 23, 2021Applicant: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi KASHIWAGI -
Publication number: 20200142253Abstract: An image source unit includes a liquid crystal panel, a surface light source device, and an optical sheet, the optical sheet including: a substrate layer; and an optical function layer that is layered on one surface of the substrate layer, and has a plurality of light transmission parts which are arranged in a row along a surface of the substrate layer so as to be light-transmissive, and light absorption parts in a row, each of which is arranged between adjacent ones of the light transmission parts so as to be light-absorptive, wherein on a cross section of the optical function layer in the layer thickness direction, a cross-sectional area of one of the light transmission parts to the total cross-sectional area of one of the light transmission parts and one of the light absorption parts which are adjacent to each other is 78.2% to 88.5%, and the liquid crystal panel is arranged on the optical sheet on a side opposite to the surface light source device.Type: ApplicationFiled: October 17, 2019Publication date: May 7, 2020Inventor: Tsuyoshi KASHIWAGI
-
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
-
Publication number: 20200081177Abstract: An image source unit includes: a surface light source device including a reflective polarizing plate; a liquid crystal panel; and an optical sheet that is arranged between the surface light source device and the liquid crystal panel, the optical sheet including: an optical function layer that is laminated to one surface of a substrate layer; and a light diffuser layer that is arranged on one surface of the optical function layer, the one surface being on an opposite side of another surface of the optical function layer where the substrate layer is arranged across the optical function layer, the optical function layer including: light transmission parts that extend in a horizontal direction, and are arranged in a plurality of rows at predetermined intervals in a vertical direction; and light absorption parts that are formed between adjacent light transmission parts, and have a lower refractive index than that of the light transmission parts, wherein an angle formed by interfaces on upper sides of the light absType: ApplicationFiled: November 12, 2019Publication date: March 12, 2020Inventor: Tsuyoshi KASHIWAGI
-
Patent number: 10495916Abstract: An object is to provide an optical sheet that keeps efficiency of light utilization high or prevents something bad from occurring in a screen, while having a light blocking effect. Included are a substrate layer; and an optical function layer that is layered on the substrate layer, and has a plurality of light transmission parts which are arranged in a row so as to be light-transmissive, and light absorption parts that are arranged between adjacent ones of the light transmission parts so as to be light-absorptive. A cross-sectional area of each of the light transmission parts to a total cross-sectional area of one of the light transmission parts and one of the light absorption parts which are adjacent to each other is 78.2% to 88.5%, or optical diffuse reflectance of the optical sheet in a light output surface side is 1.9% to 3.5%.Type: GrantFiled: February 11, 2016Date of Patent: December 3, 2019Assignee: DAI NIPPON PRINTING CO., LTD.Inventor: Tsuyoshi Kashiwagi
-
Publication number: 20190346716Abstract: A laminate includes: a substrate layer; and an optical function layer that is layered on one surface of the substrate layer, and has a plurality of light transmission parts which are arranged in a row along a surface of the substrate layer so as to be light-transmissive, and light absorption parts in a row, each of which is arranged between adjacent ones of the light transmission parts so as to be light-absorptive, wherein on a cross section of the optical function layer in the layer thickness direction, a cross-sectional area of one of the light transmission parts to the total cross-sectional area of one of the light transmission parts and one of the light absorption parts which are adjacent to each other is 78.2% to 88.5%, and optical diffuse reflectances thereof satisfy predetermined values.Type: ApplicationFiled: July 25, 2019Publication date: November 14, 2019Inventor: Tsuyoshi KASHIWAGI
-
Publication number: 20190310513Abstract: A laminate including: a base material layer, an optical functional layer, and a polarizing plate; wherein the optical functional layer includes a plurality of light transmissive portions extending in one direction along a face of the base material layer, and arrayed in a direction different from an extending direction thereof, and an in-between portion(s) formed in the intervals of adjacent light transmissive portions, an angle formed by an extending direction of the transmission axis of the polarizing plate, and the extending direction of the light transmissive portions is 1° to 41.7° in a front view, the base material layer is formed of polycarbonate, and the average coefficient of linear expansion or the average linear expansion of the laminate is within a predetermined range.Type: ApplicationFiled: April 16, 2019Publication date: October 10, 2019Inventor: Tsuyoshi KASHIWAGI
-
Patent number: 10310322Abstract: Provided is an image source unit including a layer including a light transmissive portion and an in-between portion, which can improve the use efficiency of light from a light source and improve the quality of display, including a liquid crystal panel and an optical sheet arranged on a lower polarizing plate side from the liquid crystal panel, wherein: the optical sheet includes a base material layer, an optical functional layer, and an adhesive layer; the optical functional layer includes a plurality of light transmissive portions having one extending direction along a face of the base material layer having a predetermined cross section, arranged in a different direction from the extending direction at predetermined intervals, and a plurality of in-between portions formed in the intervals of the adjacent light transmissive portions; and the lower polarizing plate and the optical sheet are adhered to each other by the adhesive layer.Type: GrantFiled: April 29, 2016Date of Patent: June 4, 2019Assignee: DAI NIPPON PRINTING CO., LTD.Inventor: Tsuyoshi Kashiwagi
-
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
-
Patent number: 10228588Abstract: Provided is an image source unit including a layer including a light transmissive portion and an in-between portion, which can improve the use efficiency of light from a light source and improve the quality of display, including a liquid crystal panel and an optical sheet arranged on a lower polarizing plate side from the liquid crystal panel, wherein: the optical sheet includes a base material layer, an optical functional layer, and an adhesive layer; the optical functional layer includes a plurality of light transmissive portions having one extending direction along a face of the base material layer having a predetermined cross section, arranged in a different direction from the extending direction at predetermined intervals, and a plurality of in-between portions formed in the intervals of the adjacent light transmissive portions; and the lower polarizing plate and the optical sheet are adhered to each other by the adhesive layer.Type: GrantFiled: November 22, 2016Date of Patent: March 12, 2019Assignee: Dai Nippon Printing Co., Ltd.Inventor: Tsuyoshi Kashiwagi