Patents by Inventor Akinori Izaki

Akinori Izaki 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).

  • Publication number: 20220286588
    Abstract: According to an embodiment of the present invention, there is provided an optical film set for an image generation system. The set includes a first polarizing plate; a second polarizing plate; and a retardation plate. The image generation system includes an image taking apparatus, the first polarizing plate, an object, and the second polarizing plate arranged in the stated order, and includes the retardation plate arranged between the first polarizing plate and the second polarizing plate. The retardation plate is configured so that a color of the second polarizing plate recognized by the image taking apparatus satisfies a*??10.
    Type: Application
    Filed: May 27, 2020
    Publication date: September 8, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiaki Asanoi, Akinori Izaki
  • Publication number: 20220247901
    Abstract: According to an embodiment of the present invention, there is provided an optical film set for an image generation system. The set includes a first polarizing plate; a second polarizing plate; a first retardation plate; and a second retardation plate. The image generation system includes an image taking apparatus, the first polarizing plate, the first retardation plate, an object, the second retardation plate, and the second polarizing plate arranged in the stated order.
    Type: Application
    Filed: May 27, 2020
    Publication date: August 4, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiaki Asanoi, Akinori Izaki
  • Publication number: 20220082825
    Abstract: There is provided a head-up display apparatus, which is excellent in heat resistance and is suppressed in occurrence of air bubbles under a high-temperature environment. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate, which is arranged on a housing inner side of the cover member, and includes a pressure-sensitive adhesive layer and a polarizer in the stated order from a cover member side. An interlayer adhesive strength between the cover member and the pressure-sensitive adhesive layer is 39 N/25 mm or more.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 17, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takehito Fuchida, Yoshiaki Asanoi, Akinori Izaki
  • Publication number: 20220082746
    Abstract: There is provided a head-up display apparatus, which is excellent in heat resistance and is suppressed in occurrence of air bubbles under a high-temperature environment. A head-up display apparatus according to an embodiment of the present invention includes: a display unit configured to emit projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate, which is arranged on a housing inner side of the cover member, and includes a pressure-sensitive adhesive layer and a polarizer in the stated order from a cover member side. An interlayer adhesive strength between the cover member and the pressure-sensitive adhesive layer is 30 N/25 mm or more.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 17, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takehito Fuchida, Yoshiaki Asanoi, Akinori Izaki
  • Publication number: 20210048570
    Abstract: The reinforced polarizing optical film laminate comprises a polarizing film laminate containing an iodine concentration for the polarizing film and a water content for the polarizing film laminate which fall within a region surrounded, in an x-y orthogonal coordinate system in which the iodine concentration of the polarizing film is plotted on the x-axis, and the water content of the polarizing film laminate is plotted on the y-axis, by: a first line segment connecting a first point and a second point; a second line segment connecting the second point and a third point; a third line segment connecting the third point and a fourth point; a fourth line segment connecting the fourth point and a fifth point; and a fifth line segment connecting the first point and the fifth point, wherein the reinforced film laminate has a breaking strength in a MD direction of 135 N/10 mm or more.
    Type: Application
    Filed: February 28, 2019
    Publication date: February 18, 2021
    Inventors: Tetsuro TAKEDA, Katsunori TAKADA, Keisuke KIMURA, Tomohiro YAMASHITA, Yoichiro SUGINO, Eiko SUEFUSA, Akinori IZAKI
  • Publication number: 20190331838
    Abstract: There is provided an optical laminate that can improve viewability by suppressing a hue change in accordance with the angle of polarized sunglasses. An optical laminate of the present invention includes: a first retardation layer; a second retardation layer; a polarizer; and a third retardation layer. The first retardation layer, the second retardation layer, the polarizer, and the third retardation layer is laminated from a viewer side in the stated order.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 31, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshimi Konno, Hironori Yaginuma, Akinori Izaki, Yoshitsugu Kitamura
  • Patent number: 10274659
    Abstract: A polarizing plate including an optical functional film and a polarizing film (polarizer), the polarizing plate being thin and excellent in durability of the polarizing film. The polarizing plate includes an optical functional film, a pressure-sensitive adhesive layer, a polarizing film, and a protective film in the stated order, in which: the polarizing film has a thickness of 15 ?m or less; the pressure-sensitive adhesive layer has a thickness of 15 ?m or less; the optical functional film has a moisture permeability of 200 g/m2/24 h or less; and the protective film has a moisture permeability of 1,000 g/m2/24 h or less.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 30, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Ryohei Sawazaki, Atsushi Yasui, Yuki Kida, Takeharu Kitagawa, Takuya Mori
  • Patent number: 10234611
    Abstract: There is provided a polarizer that can realize multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein the polarizer has formed therein a transparent portion having a transmittance higher than that of another portion, and when the polarizer is placed under an environment having a temperature of 60° C. and a humidity of 90% for 2 hours, a transmittance change (?Ts) of the transparent portion is 10% or less.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: March 19, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shusaku Goto, Akinori Izaki, Daisuke Ogomi
  • Publication number: 20170276851
    Abstract: Provided is a polarizing plate including an optical functional film and a polarizing film (polarizer), the polarizing plate being thin and excellent in durability of the polarizing film. The polarizing plate of the present invention includes an optical functional film, a pressure-sensitive adhesive layer, a polarizing film, and a protective film in the stated order, in which: the polarizing film has a thickness of 15 ?m or less; the pressure-sensitive adhesive layer has a thickness of 15 ?m or less; the optical functional film has a moisture permeability of 200 g/m2/24 h or less; and the protective film has a moisture permeability of 1,000 g/m2/24 h or less.
    Type: Application
    Filed: September 18, 2015
    Publication date: September 28, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori IZAKI, Ryohei SAWAZAKI, Atsushi YASUI, Yuki KIDA, Takeharu KITAGAWA, Takuya MORI
  • Patent number: 9623579
    Abstract: Provided are a cutting information determination method that can use a simpler process to improve yield, and a strip-shaped polarizing sheet manufacturing method using such a method, an optical display unit manufacturing method using such a method, a strip-shaped polarizing sheet, and a polarizing sheet material. A cutting position in the width direction A2, in which a polarizing sheet material MP is to be cut along its longitudinal direction A1, is determined based on the numbers of defects counted with respect to plural points in the width direction A2 of the polarizing sheet material MP. This makes it possible to determine the cutting position in such a way that a region with many defects does not fall within the cut width, so that a higher-yield cutting position can be determined. The cutting position can also be determined using a simple process in which defects are counted with respect to plural points in the width direction A2.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: April 18, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Yuu Sugimoto, Seiji Umemoto, Tetsushi Kunitake
  • Publication number: 20170090086
    Abstract: There is provided a polarizer that can realize multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein the polarizer has formed therein a transparent portion having a transmittance higher than that of another portion, and when the polarizer is placed under an environment having a temperature of 60° C. and a humidity of 90% for 2 hours, a transmittance change (?Ts) of the transparent portion is 10% or less.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 30, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shusaku Goto, Akinori Izaki, Daisuke Ogomi
  • Publication number: 20160356927
    Abstract: This polarizing film is characterized by comprising an inorganic layer on one or both surfaces of a polarizing element. The polarizing film has barrier properties against steam, and, even when used in the mode of a polarizing film with an adhesive layer, has good adhesion with the adhesive layer.
    Type: Application
    Filed: October 16, 2014
    Publication date: December 8, 2016
    Applicants: NITTO DENKO CORPORATION, NITTO DENKO CORPORATION
    Inventors: Atsushi Yasui, Yuusuke Toyama, Akinori Izaki, Nozomi Fujino
  • Patent number: 9453953
    Abstract: The present invention provides a thin polarizing film which has only a small environmental load and has excellent optical characteristics. The thin polarizing film is produced by forming a polyvinyl alcohol-based resin layer on a thermoplastic resin substrate. The thin polarizing film has a thickness of 10 ?m or less, a single axis transmittance of 42.0% or more, a polarization degree of 99.95% or more, and an iodine content of 17.6 grams per 400×700 square millimeters or less, which is measured by an ion chromatography method.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 27, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Takeharu Kitagawa, Shusaku Goto, Takashi Kamijo, Tomohiro Mori, Minoru Miyatake
  • Patent number: 9405050
    Abstract: The present invention provides a thin polarizing film which has only a small environmental load and has excellent optical characteristics. The thin polarizing film is produced by forming a polyvinyl alcohol-based resin layer on a thermoplastic resin substrate. The thin polarizing film has a thickness of 10 ?m or less, a single axis transmittance of 42.0% or more, a polarization degree of 99.95% or more, and an iodine content of 17.6 grams per 400×700 square millimeters or less, which is measured by an ion chromatography method.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: August 2, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Takeharu Kitagawa, Shusaku Goto, Takashi Kamijo, Tomohiro Mori, Minoru Miyatake
  • Patent number: 9354372
    Abstract: An optical laminate in which a polarizing film including a polyvinyl alcohol-based resin having oriented iodine is bonded on a first surface of the polarizing film to an optical film through an optically transparent adhesive layer is provided. The polarizing film exhibits a property that a value expressed by the following formula: Aa×(Is/Ia), is 0.53 or more, where: Aa represents an absorbance; Ia represents a value obtained by integrating a distribution of integrated intensities in the thickness direction of the polarizing film; and Is represents a value obtained by integrating, a distribution of integrated intensities in the thickness direction of the polarizing film; and the adhesive layer exhibits a property that a difference between a refractive index of the adhesive layer and a refractive index in the absorption axis direction of the polarizing film at the first surface of the polarizing film is 0.08 or less.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: May 31, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takashi Kamijo, Akinori Izaki, Takeharu Kitagawa, Shusaku Goto, Daigoro Nakagawa
  • Publication number: 20160047960
    Abstract: The present invention provides a thin polarizing film which has only a small environmental load and has excellent optical characteristics. The thin polarizing film is produced by forming a polyvinyl alcohol-based resin layer on a thermoplastic resin substrate. The thin polarizing film has a thickness of 10 ?m or less, a single axis transmittance of 42.0% or more, a polarization degree of 99.95% or more, and an iodine content of 17.6 grams per 400×700 square millimeters or less, which is measured by an ion chromatography method.
    Type: Application
    Filed: October 22, 2015
    Publication date: February 18, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Takeharu Kitagawa, Shusaku Goto, Takashi Kamijo, Tomohiro Mori, Minoru Miyatake
  • Patent number: 9227222
    Abstract: The present invention provides a thin polarizing film which has only a small environmental load and has excellent optical characteristics. The thin polarizing film is produced by forming a polyvinyl alcohol-based resin layer on a thermoplastic resin substrate. The thin polarizing film has a thickness of 10 ?m or less, a single axis transmittance of 42.0% or more, a polarization degree of 99.95% or more, and an iodine content of 17.6 grams per 400×700 square millimeters or less, which is measured by an ion chromatography method.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: January 5, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Takeharu Kitagawa, Shusaku Goto, Takashi Kamijo, Tomohiro Mori, Minoru Miyatake
  • Publication number: 20150316696
    Abstract: An optical laminate in which a polarizing film including a polyvinyl alcohol-based resin having oriented iodine is bonded on a first surface of the polarizing film to an optical film through an optically transparent adhesive layer is provided. The polarizing film exhibits a property that a value expressed by the following formula: Aa×(Is/Ia), is 0.53 or more, where: Aa represents an absorbance; Ia represents a value obtained by integrating a distribution of integrated intensities in the thickness direction of the polarizing film; and Is represents a value obtained by integrating, a distribution of integrated intensities in the thickness direction of the polarizing film; and the adhesive layer exhibits a property that a difference between a refractive index of the adhesive layer and a refractive index in the absorption axis direction of the polarizing film at the first surface of the polarizing film is 0.08 or less.
    Type: Application
    Filed: February 6, 2014
    Publication date: November 5, 2015
    Inventors: Takashi KAMIJO, Akinori IZAKI, Takeharu KITAGAWA, Shusaku GOTO, Daigoro NAKAGAWA
  • Publication number: 20150301248
    Abstract: Provided is a protective film capable of satisfactorily suppressing warping of a polarizing plate. The protective film of the present invention, includes a first resin layer (11), an adhesion layer (13), and a second resin layer (12) in the stated order.
    Type: Application
    Filed: October 2, 2012
    Publication date: October 22, 2015
    Inventors: Akinori IZAKI, Mariko HIRAI, Keisuke KIMURA, Yuuji SAIKI, Hironori MOTOMURA
  • Publication number: 20140287255
    Abstract: Provided are a cutting information determination method that can use a simpler process to improve yield, and a strip-shaped polarizing sheet manufacturing method using such a method, an optical display unit manufacturing method using such a method, a strip-shaped polarizing sheet, and a polarizing sheet material. A cutting position in the width direction A2, in which a polarizing sheet material MP is to be cut along its longitudinal direction A1, is determined based on the numbers of defects counted with respect to plural points in the width direction A2 of the polarizing sheet material MP. This makes it possible to determine the cutting position in such a way that a region with many defects does not fall within the cut width, so that a higher-yield cutting position can be determined. The cutting position can also be determined using a simple process in which defects are counted with respect to plural points in the width direction A2.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Akinori Izaki, Yuu Sugimoto, Seiji Umemoto, Tetsushi Kunitake