Patents by Inventor Takeshi Imizu
Takeshi Imizu 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: 20140125947Abstract: The present invention provides a plastic lens capable of suppressing deformation while having a photochromic film. A plastic lens according to the present invention is configured to include a plastic substrate formed in a meniscus shape with a concave surface and a convex surface, a photochromic film provided on the convex surface of the plastic substrate, and a stress compensation film provided on the concave surface of the plastic substrate.Type: ApplicationFiled: May 31, 2012Publication date: May 8, 2014Applicant: HOYA CORPORATIONInventors: Takeshi Imizu, Tomofumi Ohnishi, Hiroshi Ota, Terufumi Hamamoto
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Publication number: 20130142948Abstract: A photochromic lens manufacturing system has an orderer side computer (101) and a manufacturer side computer (201) connected with each other through a communication line (300), and is adapted to manufacture a photochromic lens with an optical surface forming device (204), a photochromic film forming device (202) and a hard film forming device (204) under control of the manufacturer side computer (201). The orderer side computer (101) transmits lens substrate data related to a substrate material of the lens, optical surface data related to optical surfaces of the lens, data related to the photochromic film and data related to a hard film to the manufacturer side computer (201) through the communication line (300).Type: ApplicationFiled: March 31, 2010Publication date: June 6, 2013Applicant: HOYA CORPORATIONInventors: Hiroshi Ohta, Takeshi Imizu, Takamitsu Hirose, Toshikazu Hashimoto
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Publication number: 20120101617Abstract: An object of the present invention is to make it possible to manufacture a photochromic lens on made-to-order basis within short time, without keeping a stack of the photochromic lens. A photochromic lens manufacturing system has an orderer side computer (101) and a manufacturer side computer (201) connected with each other through a communication line (300), and is adapted to manufacture a photochromic lens under control of the manufacturer side computer (201). The orderer side computer (101) transmits lens substrate data related to a substrate material of the lens, optical surface data related to optical surfaces of the lens, data related to the photochromic film and data related to a hard film to the manufacturer side computer (201) through the communication line (300).Type: ApplicationFiled: March 31, 2010Publication date: April 26, 2012Applicant: Hoya CorporationInventors: Hiroshi Ohta, Takeshi Imizu, Takamitsu Hirose, Toshikazu Hashimoto
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Publication number: 20110262636Abstract: The present invention relates to a method of manufacturing a plastic lens comprising forming a resin layer on a surface of a plastic lens substrate. The method of manufacturing a plastic lens of the present invention comprises coating a water-based coating liquid comprising a resin component and a water-based solvent by discharging the water-based coating liquid from a tip of a nozzle onto the surface of the plastic lens substrate being rotated with the surface facing upward, so that a spiral coating path is traced from a perimeter portion to a center portion of the surface as well as so that adjacent coating paths in a radial direction of the surface contact or overlap each other, and forming the resin layer by rotating the plastic lens substrate after the coating with the surface on which the coating liquid has been coated facing upward to remove at least a portion of the water-based solvent comprised in the coating liquid.Type: ApplicationFiled: August 19, 2008Publication date: October 27, 2011Applicant: HOYA CORPORATIONInventors: Hiroshi Ohta, Toshikazu Hashimoto, Takeshi Imizu
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Patent number: 8028650Abstract: A light irradiation device (151) includes a UV lamp (153), first and second optical filters (164, 165) which transmit and block wavelengths within different specific ranges, and a filter switching mechanism (162) which selectively interposes the first and second optical filters (164, 165) between the UV lamp (153) and an optical lens. The blocking wavelength of the first optical filter (164) is relatively longer than that of the second optical filter (165). The first optical filter (164) is interposed between the UV lamp (153) and the optical lens since the start of curing a coating solution until a lapse of a predetermined period of time. When the predetermined period of time has elapsed, the second optical filter (165) is interposed between the UV lamp (153) and the optical lens to replace the first optical filter (164).Type: GrantFiled: March 4, 2005Date of Patent: October 4, 2011Assignee: Hoya CorporationInventors: Masahiro Jinbo, Hiroshi Ota, Takeshi Imizu
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Publication number: 20100255193Abstract: A coating liquid manufacturing step for manufacturing a coating liquid for being coated on a lens substrate includes a step for filtering an original coating liquid with a filter having a fiber structure, the original coating liquid being prepared by mixing coating materials. The filter has an organic fiber layer (2) and an inorganic fiber layer (1). The original coating liquid is filtered with the organic fiber layer side as primary side.Type: ApplicationFiled: March 24, 2010Publication date: October 7, 2010Applicant: HOYA CORPORATIONInventors: Takeshi Imizu, Takamitsu Hirose
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Publication number: 20100239776Abstract: The present invention relates to a method of manufacturing a plastic lens comprising a cured film on at least one of a pair of opposing surfaces of a plastic lens substrate. The method of manufacturing a plastic lens of the present invention comprises heating the plastic lens substrate to a temperature greater than or equal to a glass transition temperature of the substrate; coating a photocurable composition on at least one of a pair of opposing surfaces of the lens substrate following the heating; forming a cured film by irradiating the photocurable composition that has been coated on the substrate with light to cure at least a portion of the composition; and conducting a heat treatment of the plastic lens on which the cured film has been formed at a temperature, the temperature being lower than the glass transition temperature of the substrate but greater than or equal to a glass transition temperature of the cured film.Type: ApplicationFiled: July 18, 2008Publication date: September 23, 2010Applicant: HOYA CORPORATIONInventors: Eiichi Yajima, Kazunori Mikami, Takamitsu Hirose, Takeshi Imizu, Eisaku Kuroyama, Shigeru Takizawa
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Publication number: 20100012028Abstract: A light irradiation device (151) includes a UV lamp (153), first and second optical filters (164, 165) which transmit and block wavelengths within different specific ranges, and a filter switching mechanism (162) which selectively interposes the first and second optical filters (164, 165) between the UV lamp (153) and an optical lens. The blocking wavelength of the first optical filter (164) is relatively longer than that of the second optical filter (165). The first optical filter (164) is interposed between the UV lamp (153) and the optical lens since the start of curing a coating solution until a lapse of a predetermined period of time. When the predetermined period of time has elapsed, the second optical filter (165) is interposed between the UV lamp (153) and the optical lens to replace the first optical filter (164).Type: ApplicationFiled: March 4, 2005Publication date: January 21, 2010Applicant: HOYA CORPORATIONInventors: Masahiro Jinbo, Hiroshi Ota, Takeshi Imizu
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Publication number: 20090318581Abstract: A hardenable composition which comprises (1) a radical polymerizable monomer, (2) an organosilicon compound having epoxy group at one end, (3) an organosilicon compound having a radical polymerizable functional group at one end, (4) an amine compound, (5) a photochromic compound and (6) a photopolymerization initiator, wherein the compound of component (2) is a compound having silanol group or a group which forms silanol group by hydrolysis, and the compound of component (3) is a compound having silanol group or a group which forms silanol group by hydrolysis; and an optical member which comprises a photochromic coating layer formed by coating an optical substrate with the hardenable composition described above and hardening the composition. The photochromic coating layer in the optical member exhibits excellent adhesion with the optical substrate and a great strength of the film.Type: ApplicationFiled: May 31, 2006Publication date: December 24, 2009Inventors: Hiroshi Ota, Takeshi Imizu, Ken-ichi Shinde
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Patent number: 7318959Abstract: The present invention provides an optical member having a plastic substrate and a multilayered antireflection film formed by vapor deposition, wherein at least one layer in the antireflection film is a hybrid layer formed of at least one inorganic substance selected from silicon dioxide, aluminum oxide, titanium oxide, zirconium oxide, tantalum oxide, yttrium oxide, and niobium oxide and an organosilicon compound that is a liquid at normal temperature and at atmospheric pressure and/or an organic compound not containing silicon that is a liquid at normal temperature and at atmospheric pressure as vapor deposition raw materials.Type: GrantFiled: December 24, 2003Date of Patent: January 15, 2008Assignee: Hoya CorporationInventors: Takeshi Mitsuishi, Takeshi Imizu, Hiroshi Kojima, Hitoshi Kamura, Ken-ichi Shinde
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Publication number: 20060013949Abstract: A vapor deposition crucible includes a crucible main body which is open to upper and lower sides and has a cavity in which a sintered pellet as a vapor deposition material is stored. The cavity of the crucible main body has two cavity portions. A first cavity portion connected to an opening open to the lower side is formed to make the sintered pellet to be stored fit in the first cavity portion. A second cavity portion connected to an opening open to the upper side is formed to form a gap between the second cavity portion and the sintered pellet to be stored. A step like portion is at least partially formed at a connection portion between the first cavity portion and the second cavity portion.Type: ApplicationFiled: September 8, 2005Publication date: January 19, 2006Inventors: Ken-ichi Shinde, Makoto Adachi, Takeshi Imizu, Takeshi Mitsuishi
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Publication number: 20040146723Abstract: The present invention provides an optical member having a plastic substrate and a multilayered antireflection film formed by vapor deposition, wherein at least one layer in the antireflection film is a hybrid layer formed of at least one inorganic substance selected from silicon dioxide, aluminum oxide, titanium oxide, zirconium oxide, tantalum oxide, yttrium oxide, and niobium oxide and an organosilicon compound that is a liquid at normal temperature and at atmospheric pressure and/or an organic compound not containing silicon that is a liquid at normal temperature and at atmospheric pressure as vapor deposition raw materials.Type: ApplicationFiled: December 24, 2003Publication date: July 29, 2004Inventors: Takeshi Mitsuishi, Takeshi Imizu, Hiroshi Kojima, Hitoshi Kamura, Ken-ichi Shinde
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Publication number: 20030097989Abstract: A vapor deposition crucible includes a crucible main body which is open to upper and lower sides and has a cavity in which a sintered pellet as a vapor deposition material is stored. The cavity of the crucible main body has two cavity portions. A first cavity portion connected to an opening open to the lower side is formed to make the sintered pellet to be stored fit in the first cavity portion. A second cavity portion connected to an opening open to the upper side is formed to form a gap between the second cavity portion and the sintered pellet to be stored. A step like portion is at least partially formed at a connection portion between the first cavity portion and the second cavity portion.Type: ApplicationFiled: August 30, 2002Publication date: May 29, 2003Inventors: Ken-ichi Shinde, Makoto Adachi, Takeshi Imizu, Takeshi Mitsuishi