Patents by Inventor Haruhiko Mamada
Haruhiko Mamada 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: 20190248698Abstract: The present invention provides a low-alkali or alkali-free glass for laser processing, the glass reducing occurrence of laser irradiation-induced cracks and allowing formation of circular through holes. The present invention relates to the glass for laser processing, the glass having a glass composition including, in mol %: 45.0%?SiO2?70.0%; 2.0%?B2O3?20.0%; 3.0%?Al2O3?20.0%; 0%?ZnO?9.0%; and (I) 0.1%?CuO?2.0% and 0%?TiO2?15.0%; or (II) 0.1%?TiO2<5.0% and 0%?CuO<0.1%, wherein, in the case of (II), a metal oxide serving as a coloring component is further included, a relationship of 0?Li2O+Na2O+K2O<2.0% is satisfied, either of principal surfaces of the glass has a layer containing fine particles, and the fine particles have an average particle diameter of 10 nm or more and less than 1.0 ?m.Type: ApplicationFiled: June 15, 2017Publication date: August 15, 2019Inventors: Keiji TSUNETOMO, Haruhiko MAMADA, Teruhide INOUE
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Patent number: 8593700Abstract: An erecting equal-magnification lens array plate includes a stack of a first lens array plate provided with a plurality of first lenses arranged on a first surface and a plurality of second lenses arranged on a second surface, and a second lens array plate provided with a plurality of third lenses arranged on a third surface and a plurality of fourth lenses arranged on a fourth surface. The erecting equal-magnification lens array plate is provided with a first light shielding wall provided upright to surround the first lens, and a second light shielding wall provided upright to surround the fourth lens. An area on the first surface of the first lens array plate outside the effective region of the first lenses is roughened.Type: GrantFiled: August 19, 2010Date of Patent: November 26, 2013Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Haruhiko Mamada, Katsuhide Shimmo, Teruhide Inoue
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Patent number: 8446647Abstract: An image reading device includes: a line illuminator for irradiating a document G; an erecting equal-magnification lens array operative to condense light reflected by the document G and including a stack of a first lens array plate and a second lens array plate each provided with an arrangement of a plurality of lenses on both sides thereof; a line image sensor operative to receive the light condensed by the erecting equal-magnification lens array; a housing for securing the line illuminator, the erecting equal-magnification lens array, and the line image sensor in their places; and a first light shielding member, a second light shielding member, and a third light shielding member operative to prevent light not contributing to imaging from entering the lenses. The first light shielding member, the second light shielding member, and the third light shielding member are formed as one piece with the main part of the housing.Type: GrantFiled: September 18, 2009Date of Patent: May 21, 2013Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Haruhiko Mamada, Shiro Sato, Katsuhide Shimmo
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Patent number: 8077407Abstract: A lens array unit mounting structure mounts a lens array unit in a recess provided in a housing of an image reading device. The structure includes a right projection and a left projection provided on the lens array unit and includes a right groove and a left groove provided in the recess of the housing. The lens array unit is secured in the recess of the housing by engaging the right projection with the right groove and engaging the left projection with the left groove.Type: GrantFiled: July 23, 2009Date of Patent: December 13, 2011Assignee: Nippon Sheet Glass Company, LimitedInventors: Katsuhide Shimmo, Shiro Sato, Haruhiko Mamada
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Publication number: 20110128592Abstract: An erecting equal-magnification lens array plate includes: a first lens array plate and a second lens array plate each provided with a plurality of convex lenses on both surfaces; a first light-shielding member provided with a plurality of first openings; and a second light-shielding member provided with a plurality of second openings. The first lens array plate and the second lens array plate form a stack such that a combination of the lenses associated with each other form a coaxial lens system. The first light-shielding member is provided on the first lens array plate such that the first opening is located opposite to the corresponding convex lens. The second light-shielding member is provided on the second lens array plate such that the second opening is located opposite to the corresponding fourth lens. An open end of each of the first opening and the second opening facing the lens is formed to become progressively larger in diameter toward the end.Type: ApplicationFiled: December 1, 2010Publication date: June 2, 2011Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Haruhiko MAMADA, Shiro Sato, Katsuhide Shimmo
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Publication number: 20110043872Abstract: An erecting equal-magnification lens array plate includes a stack of a first lens array plate provided with a plurality of first lenses arranged on a first surface and a plurality of second lenses arranged on a second surface, and a second lens array plate provided with a plurality of third lenses arranged on a third surface and a plurality of fourth lenses arranged on a fourth surface. The erecting equal-magnification lens array plate is provided with a first light shielding wall provided upright to surround the first lens, and a second light shielding wall provided upright to surround the fourth lens. An area on the first surface of the first lens array plate outside the effective region of the first lenses is roughened.Type: ApplicationFiled: August 19, 2010Publication date: February 24, 2011Applicant: Nippon Sheet Glass Company, LimitedInventors: Haruhiko MAMADA, Katsuhide Shimmo, Teruhide Inoue
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Publication number: 20100067070Abstract: An image reading device includes: a line illuminator for irradiating a document G; an erecting equal-magnification lens array operative to condense light reflected by the document G and including a stack of a first lens array plate and a second lens array plate each provided with an arrangement of a plurality of lenses on both sides thereof; a line image sensor operative to receive the light condensed by the erecting equal-magnification lens array; a housing for securing the line illuminator, the erecting equal-magnification lens array, and the line image sensor in their places; and a first light shielding member, a second light shielding member, and a third light shielding member operative to prevent light not contributing to imaging from entering the lenses. The first light shielding member, the second light shielding member, and the third light shielding member are formed as one piece with the main part of the housing.Type: ApplicationFiled: September 18, 2009Publication date: March 18, 2010Applicant: Nippon Sheet Glass Company, LimitedInventors: Haruhiko Mamada, Shiro Sato, Katsuhide Shimmo
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Publication number: 20100020421Abstract: A lens array unit mounting structure mounts a lens array unit in a recess provided in a housing of an image reading device. The structure includes a right projection and a left projection provided on the lens array unit and includes a right groove and a left groove provided in the recess of the housing. The lens array unit is secured in the recess of the housing by engaging the right projection with the right groove and engaging the left projection with the left groove.Type: ApplicationFiled: July 23, 2009Publication date: January 28, 2010Applicant: Nippon Sheet Glass Company, LimitedInventors: Katsuhide Shimmo, Shiro Sato, Haruhiko Mamada