Patents by Inventor Eiichi Yajima

Eiichi Yajima 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: 20220285113
    Abstract: A compact fall detection sensor includes a case. A magnet is housed in the case. A reed switch with a pair of reeds are integrally positioned around the central axis of the case at the bottom of the case. In an upright state, the magnet is gravitationally positioned in the longitudinal direction of the reed switch around the central axis of the curved surface of the case, each magnetic pole magnetizing the corresponding reed of the reed switch, allowing one of the reeds to be magnetized to N pole and the other reed to S pole to turn on the switch. When inclined from the upright state, the magnet slides along the curved surface of the case and deviates from the central axis, to position only one of the magnetic poles of the magnet around the central axis to turn off the reed switch.
    Type: Application
    Filed: July 17, 2020
    Publication date: September 8, 2022
    Applicant: NIPPON ALEPH CO., LTD.
    Inventors: Koichi YAJIMA, Eiichi KOSUGE, Masaya HAGIYAMA
  • Publication number: 20220254588
    Abstract: A rotation angle detection sensor detects the rotation angle of a rotating part attached to a structure including a fixed part and a rotating part that rotates around a rotary shaft. The rotation angle detection sensor includes a reed switch attached to the fixed or rotating part with reeds placed near the rotary shaft. An annular magnet is attached to the rotating or fixed part. A magnetic circuit is formed with respect to the reed switch, with its central axis arranged concentrically with the rotary shaft. When the magnet rotates around the central axis with respect to the reed switch, if the same poles of the magnet are lined up in the longitudinal direction of the reed switch, the reed switch is turned off. If opposite poles of the magnet are lined up in the longitudinal direction of the reed switch, the reed switch is turned on.
    Type: Application
    Filed: July 30, 2020
    Publication date: August 11, 2022
    Applicant: NIPPON ALEPH CO., LTD.,
    Inventors: Koichi YAJIMA, Eiichi KOSUGE, Masaya HAGIYAMA
  • Patent number: 9322968
    Abstract: An aspect of the present invention relates to a polarizing lens, which comprises a polarizing layer comprising a dichroic dye and a functional film in this order on a lens substrate, and further comprises a waterborne resin layer between the polarizing layer and the functional film as a layer adjacent to both the polarizing layer and functional film, wherein the waterborne resin layer is greater than 0.50 ?m in thickness and has been formed by coating and drying a waterborne resin composition comprising a polyether polyurethane resin and a water-based solvent.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 26, 2016
    Assignee: HOYA CORPORATION
    Inventors: Eiichi Yajima, Katsushi Hamakubo, Kae Ito
  • Patent number: 8690639
    Abstract: An aspect of the present invention relates to a method of manufacturing an eyeglass lens, which comprises a step of conducting polishing processing of a non-optical surface of a semifinished lens, one surface of which is an optical surface and the other surface of which is the non-optical surface, to create an optical surface. The semifinished lens comprises an acrylic coating on an optical surface of a lens substrate, a surface of the acrylic coating having a contact angle relative to water of equal to or less than 90°, prior to the polishing processing, a protective film is adhered through an adhesive layer of the film to the surface of the acrylic coating, and the polishing processing is conducted by polishing a non-optical surface of the lens substrate in a state where the protective film surface is secured in a block jig.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: April 8, 2014
    Assignee: Hoya Corporation
    Inventor: Eiichi Yajima
  • Patent number: 8679579
    Abstract: An aspect of the present invention relates to a method of manufacturing a polarizing member comprising: forming a polarizing film by coating a dichroic dye-containing solution on a substrate; subjecting the polarizing film that has been formed to a treatment to immobilize the dichroic dye in the film; coating a waterborne resin composition containing a resin component and a water-based solvent on the polarizing film after the immobilization treatment, and drying the composition to form a primer layer; and forming a functional film on the primer layer that has been formed; wherein after the immobilization treatment but before the coating of the waterborne resin composition, an article to be coated is subjected to heat treatment.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: March 25, 2014
    Assignee: Hoya Corporation
    Inventor: Eiichi Yajima
  • Patent number: 8414802
    Abstract: An aspect of the present invention relates to a method of manufacturing a polarizing eyeglass lens comprising forming an orientation layer on a substrate, sliding a rubbing member across the orientation layer in a state of contact with the orientation layer to form curved rubbing traces on a surface of the orientation layer, forming a polarizing layer by depositing and orienting a dichroic dye on the orientation layer, and subjecting the polarizing layer to a treatment of immobilizing the dichroic dye in the polarizing layer.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: April 9, 2013
    Assignee: Hoya Corporation
    Inventors: Yoshifumi Watanabe, Eiichi Yajima
  • Publication number: 20130059068
    Abstract: An aspect of the present invention relates to a method of manufacturing an eyeglass lens, which comprises forming a functional film by coating a coating liquid by spin coating on a lens substrate, wherein the coating liquid is a curable composition comprising a curable component selected from the group consisting of an organic silicon compound and an acrylate compound, and an essential solvent in the form of a ketone or ether solvent with a relative evaporation rate of less than 1.00 when denoting an evaporation rate of butyl acetate as 1.00.
    Type: Application
    Filed: May 29, 2012
    Publication date: March 7, 2013
    Applicant: HOYA CORPORATION
    Inventor: Eiichi YAJIMA
  • Publication number: 20130052918
    Abstract: An aspect of the present invention relates to a method of manufacturing an eyeglass lens, which comprises a step of conducting polishing processing of a non-optical surface of a semifinished lens, one surface of which is an optical surface and the other surface of which is the non-optical surface, to create an optical surface. The semifinished lens comprises an acrylic coating on an optical surface of a lens substrate, a surface of the acrylic coating having a contact angle relative to water of equal to or less than 90°, prior to the polishing processing, a protective film is adhered through an adhesive layer of the film to the surface of the acrylic coating, and the polishing processing is conducted by polishing a non-optical surface of the lens substrate in a state where the protective film surface is secured in a block jig.
    Type: Application
    Filed: February 21, 2012
    Publication date: February 28, 2013
    Applicant: HOYA CORPORATION
    Inventor: Eiichi Yajima
  • Patent number: 8313193
    Abstract: An aspect of the present invention relates to a polarizing lens comprising a polarizing layer on a substrate, wherein the polarizing layer comprises polarization axes that are at least partly in the form of a closed curve.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: November 20, 2012
    Assignee: Hoya Corporation
    Inventors: Yoshifumi Watanabe, Eiichi Yajima
  • Patent number: 8308293
    Abstract: An aspect of the present invention relates to a polarizing lens comprising a polarizing layer on a substrate, wherein the polarizing layer comprises polarization axes that are at least partly curved.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: November 13, 2012
    Assignee: Hoya Corporation
    Inventors: Yoshifumi Watanabe, Eiichi Yajima
  • Publication number: 20120196036
    Abstract: An aspect of the present invention relates to a method of mass producing eyeglass lenses in which formation of a functional film through a primer layer positioned either directly or indirectly on a substrate is simultaneously or sequentially conducted on multiple substrates to obtain multiple finished lenses, which comprises with regard to a surface on which a primer layer is directly formed, determining a reference surface in the form of a surface that has been subjected to processing under conditions identical to conditions in processing to which a surface, on which a primer layer is formed during mass production of finished lenses, is subjected, determining a film thickness of a primer layer to be formed based on a surface roughness of the reference surface thus determined, and forming a functional film after forming a primer layer of determined thickness.
    Type: Application
    Filed: December 28, 2011
    Publication date: August 2, 2012
    Applicant: HOYA CORPORATION
    Inventor: Eiichi YAJIMA
  • Publication number: 20120154910
    Abstract: The present invention relates to a method of manufacturing a polarizing lens comprising: polishing in a constant direction one of surfaces of a first mold for forming one of surfaces of a lens; forming a polarizing film by coating a coating liquid containing a dichroic dye on the surface that has been polished; disposing a second mold, for forming the other surface of the lens, opposite the first mold with a prescribed gap therebetween, and forming a cavity by occluding the gap, wherein the two molds are disposed so that the polarizing film is positioned within the cavity; and casting a lens starting material liquid containing a curable component into the cavity and conducting a reaction to cure the curable component within the cavity to obtain a polarizing lens having the polarizing film on a lens substrate.
    Type: Application
    Filed: March 31, 2010
    Publication date: June 21, 2012
    Applicant: HOYA CORPORATION
    Inventors: Eiichi Yajima, Osamu Asai
  • Publication number: 20120140323
    Abstract: The present invention relates to a method of manufacturing a polarizing lens comprising: polishing in a constant direction one of surfaces of a first mold for forming one of surfaces of a lens; disposing a second mold, for forming the other surface of the lens, opposite the first mold with a prescribed gap therebetween, and forming a cavity by occluding the gap, wherein the two molds are disposed so that the surface that has been polished is positioned within the cavity; casting a lens starting material liquid containing a curable component into the cavity and conducting a reaction to cure the curable component within the cavity to obtain a lens substrate having a surface to which a surface shape of the polished surface has been transferred; and forming a polarizing film on the surface of the lens substrate by coating a coating liquid containing a dichroic dye.
    Type: Application
    Filed: March 31, 2010
    Publication date: June 7, 2012
    Applicant: HOYA CORPORATION
    Inventors: Eiichi Yajima, Osamu Asai
  • Publication number: 20120114863
    Abstract: A lens holding jig (3) includes a lower holding portion (15) that holds the lower surface of a lens base material (1). The upper surface of the lower holding portion (15) forms support surfaces (16) that support the lower edges (S1, S2) of a cut end surface (1a) of the lens base material (1) at two points. An application liquid release portion (17) running downward is provided at the center of the support surfaces (16). The application liquid release portion (17) is formed from a long hole, a long groove, or a projection.
    Type: Application
    Filed: January 5, 2010
    Publication date: May 10, 2012
    Inventors: Eiichi Yajima, Shigetoshi Kono, Jun Watanabe, Tsuyoshi Sakurazawa, Toshikazu Hashimoto
  • Publication number: 20120021135
    Abstract: An aspect of the present invention relates to a method of manufacturing an eyeglass lens comprising a primer layer and a hardcoat layer in this order on a substrate, which comprises coating a waterborne resin composition in which a resin component is dispersed or dissolved in a water-based solvent on the substrate and then removing the water-based solvent to form the primer layer; and directly coating a hardcoat liquid comprising a curable component and a solvent on the primer layer that has been formed and then conducting a curing process to form the hardcoat layer. An exclusion range including solubility parameter SP1 of the waterborne resin composition is set and a solvent having a solubility parameter outside the exclusion range that has been set is utilized for preparing the hardcoat liquid.
    Type: Application
    Filed: June 7, 2011
    Publication date: January 26, 2012
    Applicant: HOYA CORPORATION
    Inventor: Eiichi YAJIMA
  • Publication number: 20110268874
    Abstract: An aspect of the present invention relates to a method of manufacturing a polarizing member comprising: forming a polarizing film by coating a dichroic dye-containing solution on a substrate; subjecting the polarizing film that has been formed to a treatment to immobilize the dichroic dye in the film; coating a waterborne resin composition containing a resin component and a water-based solvent on the polarizing film after the immobilization treatment, and drying the composition to form a primer layer; and forming a functional film on the primer layer that has been formed; wherein after the immobilization treatment but before the coating of the waterborne resin composition, an article to be coated is subjected to heat treatment.
    Type: Application
    Filed: January 20, 2011
    Publication date: November 3, 2011
    Applicant: HOYA CORPORATION
    Inventor: Eiichi YAJIMA
  • Patent number: 7999989
    Abstract: The present invention relates to a photochromic film comprising a photochromic dye and a resin component. The photochromic film has a nanoindentation hardness of equal to or greater than 800 nm on at least one of surfaces, surface A, thereof. The present invention further relates to a method of manufacturing a photochromic lens. The method of manufacturing a photochromic lens of the present invention comprises forming a photochromic film having a nanoindentation hardness ranging from 500 to 5000 nm on an outermost surface thereof as well as having a smaller nanoindentation hardness on a surface facing a first mold than that on the outermost surface by coating a photochromic liquid comprising a photochromic dye and a curable component on one surface of the first mold for formation of one of surfaces of a lens and subjecting the photochromic liquid to curing treatment, and a photochromic lens comprising a photochromic film on a lens substrate is obtained by means of the above first mold.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: August 16, 2011
    Assignee: Hoya Corporation
    Inventors: Osamu Asai, Eiichi Yajima, Hiroshi Ohta
  • Publication number: 20110037943
    Abstract: An aspect of the present invention relates to a polarizing lens comprising a polarizing layer on a substrate, wherein the polarizing layer comprises polarization axes that are at least partly curved.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 17, 2011
    Applicant: HOYA CORPORATION
    Inventors: Yoshifumi Watanabe, Eiichi Yajima
  • Publication number: 20110032475
    Abstract: An aspect of the present invention relates to a polarizing lens comprising a polarizing layer on a substrate, wherein the polarizing layer comprises polarization axes that are at least partly in the form of a closed curve.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 10, 2011
    Applicant: HOYA CORPORATION
    Inventors: Yoshifumi WATANABE, Eiichi YAJIMA
  • Patent number: RE46357
    Abstract: The present invention relates to a photochromic film comprising a photochromic dye and a resin component. The photochromic film has a nanoindentation hardness of equal to or greater than 800 nm on at least one of surfaces, surface A, thereof. The present invention further relates to a method of manufacturing a photochromic lens. The method of manufacturing a photochromic lens of the present invention comprises forming a photochromic film having a nanoindentation hardness ranging from 500 to 5000 nm on an outermost surface thereof as well as having a smaller nanoindentation hardness on a surface facing a first mold than that on the outermost surface by coating a photochromic liquid comprising a photochromic dye and a curable component on one surface of the first mold for formation of one of surfaces of a lens and subjecting the photochromic liquid to curing treatment, and a photochromic lens comprising a photochromic film on a lens substrate is obtained by means of the above first mold.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: April 4, 2017
    Assignee: HOYA CORPORATION
    Inventors: Osamu Asai, Eiichi Yajima, Hiroshi Ohta