Patents by Inventor Daisuke Kashiwagi
Daisuke 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).
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Patent number: 10310260Abstract: Provided is a member for displaying a projected image, including: a first base material; a second base material; and an optical member, in which at least one optical member is disposed on a surface of the first base material or the second base material, the optical member includes a plurality of cholesteric liquid crystal dots, the cholesteric liquid crystal dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure imparts a striped pattern formed of bright portions and dark portions in a cross-sectional image of the cholesteric liquid crystal dot taken by a scanning electron microscope in a direction perpendicular to a substrate, the dot includes a portion where the height thereof successively increases to the maximum height thereof from an end portion toward the center thereof, an angle between a normal line with respect to a line formed by the first dark portion from the surface of the dot on a side opposite to the substrate and a line representing the surface ofType: GrantFiled: November 21, 2017Date of Patent: June 4, 2019Assignee: FUJIFILM CorporationInventors: Yujiro Yanai, Akira Yamamoto, Michio Nagai, Yukito Saitoh, Daisuke Kashiwagi, Nobuhiko Ichihara
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Publication number: 20190154895Abstract: An optical laminate includes a wavelength selective reflective element, and an absolute phase adjustment layer which is provided on at least one surface side of the wavelength selective reflective element and has optical isotropy, and in which a first region having a first optical path length and a second region having a second optical path length different from the first optical path length are arranged in a pattern with a diffraction grating-like period. The optical laminate reflects light in the specific reflection wavelength region by the wavelength selective reflective element, of light incident from the absolute phase adjustment layer side. In the optical laminate, light which enters the first region of the absolute phase adjustment layer and is reflected by the wavelength selective reflective element and light which enters the second region and is reflected by the wavelength selective reflective element interfere with each other.Type: ApplicationFiled: January 21, 2019Publication date: May 23, 2019Inventors: Ryo SATAKE, Yukito SAITOH, Daisuke KASHIWAGI
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Patent number: 10295897Abstract: A transparent screen includes a substrate capable of transmitting light; and a plurality of dots formed on a surface of the substrate, each of the dots having wavelength-selective reflectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, and in the portion, the angle formed by the normal line to a line that is formed by a first one of the dark parts as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°.Type: GrantFiled: August 16, 2017Date of Patent: May 21, 2019Assignee: FUJIFILM CorporationInventors: Michio Nagai, Yoji Ito, Akira Yamamoto, Yukito Saitoh, Yujiro Yanai, Daisuke Kashiwagi, Nobuhiko Ichihara
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Patent number: 10281631Abstract: Provided is an optical member including: a substrate; and a dot that is in contact with a surface of the substrate, in which the dot is formed of a liquid crystal material having a cholesteric structure, and the dot exhibits wavelength selective reflecting properties having two or more reflection peaks. By using the optical member according to the present invention, an image display device in which erroneous detection of data input is reduced can be provided.Type: GrantFiled: June 7, 2017Date of Patent: May 7, 2019Assignee: FUJIFILM CorporationInventors: Michio Nagai, Yoji Ito, Daisuke Kashiwagi, Akira Yamamoto, Nobuhiko Ichihara, Hideyuki Nakamura
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Patent number: 10254639Abstract: A transparent screen for 3D display having excellent transparency and an excellent viewing angle, and a 3D display system are provided. The transparent screen for 3D display has a plurality of dots, each of the dots having wavelength selectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by a scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, in the portion, the angle formed by the normal line to a line that is formed by a first dark part as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°, and right-handed circularly polarized light and left-handed circularly polarized light are reflected by the plurality of dots.Type: GrantFiled: December 14, 2017Date of Patent: April 9, 2019Assignee: FUJIFILM CorporationInventors: Nobuhiko Ichihara, Yujiro Yanai, Akira Yamamoto, Michio Nagai, Daisuke Kashiwagi, Yukito Saitoh
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Patent number: 10222525Abstract: The optical member of the present invention includes: a substrate; and a dot that is in contact with a surface of the substrate, in which the dot has wavelength selective reflecting properties, the dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure has a stripe pattern including bright portions and dark portions in a cross-sectional view of the dot when observed with a scanning electron microscope, the dot includes a portion having a height which continuously increases to a maximum height in a direction moving from an end portion of the dot to the center of the dot, in the portion, an angle between a normal line perpendicular to a line, which is firmed using a first dark portion from a surface of the dot, and the surface is in a range of 70° to 90°, and the liquid crystal material includes a surfactant.Type: GrantFiled: April 25, 2017Date of Patent: March 5, 2019Assignee: FUJIFILM CorporationInventors: Michio Nagai, Yoji Ito, Daisuke Kashiwagi, Akira Yamamoto, Nobuhiko Ichihara, Hideyuki Nakamura
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Publication number: 20180362768Abstract: Provided are a coloring composition with which a light absorption anisotropic film having excellent durability can be formed, a light absorption anisotropic film, a laminate, and an image display device. A coloring composition according to the invention contains a dichroic dye compound having a structure represented by Formula (1D) and a liquid crystalline compound.Type: ApplicationFiled: August 24, 2018Publication date: December 20, 2018Applicant: FUJIFILM CorporationInventors: Wataru HOSHINO, Masaki OTA, Masatoshi MIZUMURA, Takashi KATOU, Yoshiaki TAKADA, Yoji ITO, Daisuke KASHIWAGI, Yuya HAMAGUCHI
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Patent number: 10133175Abstract: Provided are a photosensitive resin composition from which a cured product having a thin film thickness, excellent light-shielding properties, and a high surface hardness is obtained; as well as a cured product obtained by curing the photosensitive resin composition, a cured film and a method for producing the same, a method for producing a resin pattern, and a liquid crystal display device, an organic EL display device, an infrared cut filter, or a solid-state imaging device, each having the cured film. The photosensitive resin composition of the present invention includes (Component A) a polymer having a constitutional unit containing a group in which an acid group is protected by an acid-decomposable group; (Component B) a photoacid generator; (Component C) a solvent; (Component D) a compound having a crosslinkable group and a molecular weight in the range of 100 to 2,000; and (Component S) titanium black.Type: GrantFiled: July 14, 2016Date of Patent: November 20, 2018Assignee: FUJIFILM CorporationInventors: Daisuke Kashiwagi, Takeshi Andou, Satoru Yamada, Yasumasa Kawabe, Hisamitsu Tomeba
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Publication number: 20180328322Abstract: A pulsation damper includes: a case in which a fuel chamber is defined; and a damper unit arranged in the fuel chamber to attenuate pressure pulsation of fuel. The damper unit has a diaphragm that is elastically deformed by receiving pressure of fuel, and a plate having a rigidity higher than that of the diaphragm. A gas chamber is defined between the diaphragm and the plate joined with each other.Type: ApplicationFiled: March 8, 2018Publication date: November 15, 2018Applicant: DENSO CORPORATIONInventors: Daisuke KASHIWAGI, Hiroyuki SHIMAI
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Publication number: 20180328328Abstract: A pulsation damper for a fuel pump having a pump body in which a fuel passage is defined includes: a diaphragm that is elastically deformed in a predetermined direction by receiving a pressure of fuel; a casing part including a housing chamber that houses the diaphragm; and an attachment to be attached to the pump body. The attachment includes a communication passage that makes the housing chamber to communicate with the fuel passage. The attachment has a length in a perpendicular direction perpendicular to the predetermined direction, and the length of the attachment is smaller than a length of the casing part in the perpendicular direction.Type: ApplicationFiled: March 8, 2018Publication date: November 15, 2018Applicant: DENSO CORPORATIONInventor: Daisuke KASHIWAGI
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Patent number: 9977164Abstract: The present invention provides an optical member having a substrate and a dot in contact with a surface of the substrate, wherein the dot is made of a liquid crystal material having a cholesteric structure; the dot has wavelength selective reflection property; and the dot reflects both the right circularly polarized light and the left circularly polarized light at a wavelength at which the dot exhibits the wavelength selective reflection property. The present invention also provides an image display device having the above optical member. The optical member of the present invention achieves a large intensity of reflected light from the dot in the optical member, and the image display device of the present invention has favorable data input sensitivity as an image display device capable of receiving data input.Type: GrantFiled: December 9, 2015Date of Patent: May 22, 2018Assignee: FUJIFILM CorporationInventors: Michio Nagai, Yoji Ito, Daisuke Kashiwagi, Akira Yamamoto, Nobuhiko Ichihara, Hideyuki Nakamura
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Publication number: 20180107106Abstract: A transparent screen for 3D display having excellent transparency and an excellent viewing angle, and a 3D display system are provided. The transparent screen for 3D display has a plurality of dots, each of the dots having wavelength selectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by a scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, in the portion, the angle formed by the normal line to a line that is formed by a first dark part as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°, and right-handed circularly polarized light and left-handed circularly polarized light are reflected by the plurality of dots.Type: ApplicationFiled: December 14, 2017Publication date: April 19, 2018Applicant: FUJIFILM CorporationInventors: Nobuhiko ICHIHARA, Yujiro YANAI, Akira YAMAMOTO, Michio NAGAI, Daisuke KASHIWAGI, Yukito SAITOH
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Publication number: 20180074315Abstract: Provided is a member for displaying a projected image, including: a first base material; a second base material; and an optical member, in which at least one optical member is disposed on a surface of the first base material or the second base material, the optical member includes a plurality of cholesteric liquid crystal dots, the cholesteric liquid crystal dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure imparts a striped pattern formed of bright portions and dark portions in a cross-sectional image of the cholesteric liquid crystal dot taken by a scanning electron microscope in a direction perpendicular to a substrate, the dot includes a portion where the height thereof successively increases to the maximum height thereof from an end portion toward the center thereof, an angle between a normal line with respect to a line formed by the first dark portion from the surface of the dot on a side opposite to the substrate and a line representing the surface ofType: ApplicationFiled: November 21, 2017Publication date: March 15, 2018Applicant: FUJIFILM CorporationInventors: Yujiro YANAI, Akira YAMAMOTO, Michio NAGAI, Yukito SAITOH, Daisuke KASHIWAGI, Nobuhiko ICHIHARA
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Publication number: 20180052264Abstract: A transparent screen includes a substrate capable of transmitting light; and a plurality of dots formed on a surface of the substrate, each of the dots having wavelength-selective reflectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by a scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, the angle formed by the normal line to a line that is formed by a first one of the dark parts as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot, in the portion, is in the range of 70° to 90°, and a plurality of dot row units in which two or more dots are adjacently arranged along one direction are formed.Type: ApplicationFiled: October 27, 2017Publication date: February 22, 2018Applicant: FUJIFILM CorporationInventors: Yukito SAITOH, Yujiro YANAI, Akira YAMAMOTO, Nobuhiko ICHIHARA, Daisuke KASHIWAGI, Michio NAGAI
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Publication number: 20180003869Abstract: An optical member includes: a substrate; and a dot formed on a surface of the substrate. The dot has wavelength selective reflecting properties, and a cholesteric structure which has a stripe pattern including bright and dark portions in a cross-sectional view of the dot when observed with a scanning electron microscope. A surface shape of the dot opposite to the substrate in a cross-section of the dot in a thickness direction has at least one inflection point. In the cross-section, an angle between a normal line perpendicular to a line, formed using a first dark portion from a surface of the dot opposite to the substrate, and the surface of the dot, is in a range of 70° to 90°. A proportion of a retroreflective area of the optical member is high when observed after light irradiation from an oblique direction to a normal direction perpendicular to the optical member.Type: ApplicationFiled: September 14, 2017Publication date: January 4, 2018Applicant: FUJIFILM CorporationInventors: Akira YAMAMOTO, Yoji ITO, Michio NAGAI, Daisuke KASHIWAGI, Nobuhiko ICHIHARA
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Publication number: 20170343830Abstract: A transparent screen includes a substrate capable of transmitting light; and a plurality of dots formed on a surface of the substrate, each of the dots having wavelength-selective reflectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, and in the portion, the angle formed by the normal line to a line that is formed by a first one of the dark parts as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°.Type: ApplicationFiled: August 16, 2017Publication date: November 30, 2017Applicant: FUJIFILM CorporationInventors: Michio NAGAI, Yoji ITO, Akira YAMAMOTO, Yukito SAITOH, Yujiro YANAI, Daisuke KASHIWAGI, Nobuhiko ICHIHARA
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Publication number: 20170336555Abstract: Provided is an optical member having a high brightness, a low haze, and a small color change, an optical element, a liquid crystal display device, and a near-to-eye optical member.Type: ApplicationFiled: August 9, 2017Publication date: November 23, 2017Applicant: FUJIFILM CorporationInventors: Yujiro YANAI, Yukito SAITOH, Akira YAMAMOTO, Nobuhiko ICHIHARA, Daisuke KASHIWAGI, Michio NAGAI
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Patent number: 9778762Abstract: The information processor includes an input unit having an illuminating part and an image pickup part, and an input medium having an input surface on which inputting of information is carried out by the input unit which has position coordinates on the input surface coded by a dot pattern. The input unit irradiates light from the illuminating part onto input surface of the input medium. The irradiated light reflects off the dot contained in the dot pattern which is picked up by the image pickup part, and position information of the dot pattern is obtained. The input unit further has an input unit angular position measuring part that measures an angular position of the input unit when the light is irradiated. Based on corrected position information obtained by correction processing based on the angular position, input information, that is specified by the position coordinates is obtained.Type: GrantFiled: October 30, 2015Date of Patent: October 3, 2017Assignee: FUJIFILM CORPORATIONInventors: Akira Yamamoto, Yoji Ito, Michio Nagai, Daisuke Kashiwagi, Nobuhiko Ichihara
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Publication number: 20170269273Abstract: Provided is an optical member including: a substrate; and a dot that is in contact with a surface of the substrate, in which the dot is formed of a liquid crystal material having a cholesteric structure, and the dot exhibits wavelength selective reflecting properties having two or more reflection peaks. By using the optical member according to the present invention, an image display device in which erroneous detection of data input is reduced can be provided.Type: ApplicationFiled: June 7, 2017Publication date: September 21, 2017Applicant: FUJIFILM CorporationInventors: Michio NAGAI, Yoji ITO, Daisuke KASHIWAGI, Akira YAMAMOTO, Nobuhiko ICHIHARA, Hideyuki NAKAMURA
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Publication number: 20170269272Abstract: Provided is an optical member including: a substrate; and a dot that is in contact with a surface of the substrate, in which the dot is formed of a liquid crystal material having a cholesteric structure, four or more dots form one recognition effective region as an aggregate, and a shortest inter-end distance between one arbitrary dot and at least two other dots in the recognition effective region is 10 ?m or less. in the optical member, even when a dot pattern is observed in an oblique direction, retroreflection properties are exhibited and the intensity of reflected light is high. By using the optical member according to the present invention, an image display device having a high data input sensitivity can be provided.Type: ApplicationFiled: June 7, 2017Publication date: September 21, 2017Applicant: FUJIFILM CorporationInventors: Daisuke KASHIWAGI, Yoji ITO, Michio NAGAI, Akira YAMAMOTO, Nobuhiko ICHIHARA, Hideyuki NAKAMURA