Patents by Inventor Akira Hamanaka
Akira Hamanaka 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: 11927834Abstract: A technique capable of easily and highly accurately perform positioning of a lens member having a convex optical surface. A lens positioning mechanism is configured to include: a member holding unit that has a function of holding a lens member via an auxiliary tool attached to a second surface of the lens member having a first surface, which is a convex optical surface, and the second surface, which is an optical surface facing the first surface, and biasing the held lens member toward a side of the first surface; and an attitude control unit that abuts on a predetermined portion on the first surface of the lens member biased on the member holding unit to regulate a position of the predetermined portion and positions the lens member in a predetermined attitude.Type: GrantFiled: March 30, 2021Date of Patent: March 12, 2024Assignee: HOYA LENS THAILAND LTD.Inventors: Akira Hamanaka, Shinichi Yokoyama
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Publication number: 20210302759Abstract: Production of a lens member includes: a step of positioning a lens member having a first surface, which is a convex optical surface, and a second surface, which is an optical surface facing the first surface, in a predetermined attitude; a step of recognizing surface shape data of the first surface using a dimensional measurement result of the first surface of the positioned lens member; and a step of irradiating the first surface of the lens member with laser light to perform laser processing on the first surface, and controlling an irradiation position of the laser light based on the surface shape data.Type: ApplicationFiled: March 30, 2021Publication date: September 30, 2021Applicant: HOYA LENS THAILAND LTD.Inventors: Akira HAMANAKA, Shinichi YOKOYAMA
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Publication number: 20210302760Abstract: A technique capable of easily and highly accurately perform positioning of a lens member having a convex optical surface. A lens positioning mechanism is configured to include: a member holding unit that has a function of holding a lens member via an auxiliary tool attached to a second surface of the lens member having a first surface, which is a convex optical surface, and the second surface, which is an optical surface facing the first surface, and biasing the held lens member toward a side of the first surface; and an attitude control unit that abuts on a predetermined portion on the first surface of the lens member biased on the member holding unit to regulate a position of the predetermined portion and positions the lens member in a predetermined attitude.Type: ApplicationFiled: March 30, 2021Publication date: September 30, 2021Applicant: HOYA LENS THAILAND LTD.Inventors: Akira HAMANAKA, Shinichi YOKOYAMA
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Publication number: 20210299986Abstract: A lens positioning mechanism includes: a member holding unit that has a function of holding a second surface of a lens member having a first surface, which is a convex optical surface, and the second surface, which is an optical surface facing the first surface, and biasing the held lens member toward a side of the first surface; and an attitude control unit that regulates edge positions of a plurality of portions on the first surface of the lens member biased by the member holding unit to position the lens member in a predetermined attitude.Type: ApplicationFiled: March 30, 2021Publication date: September 30, 2021Applicant: HOYA LENS THAILAND LTD.Inventors: Akira HAMANAKA, Shinichi YOKOYAMA
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Patent number: 8440041Abstract: A lens pad includes a blank, first adhesive layer, and release sheet. The first adhesive layer is formed on one surface of the blank. The release sheet comes into tight contact with the surface of the first adhesive layer to protect this surface. The arithmetic average roughness of the surface of the release sheet on the side of the first adhesive layer is 0.1 ?m or less. The surface of the first adhesive layer from which the release sheet is peeled off is attached onto a lens as an edging target. A lens pad, a lens pad manufacturing method, a lens manufacturing method, and an adhesive member are also disclosed.Type: GrantFiled: December 30, 2009Date of Patent: May 14, 2013Assignees: Hoya Corporation, Vigteqnos Co., Ltd.Inventors: Akira Hamanaka, Daiji Sagami
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Patent number: 8216024Abstract: A lens holder (16) is attached to a processing target lens (2) such that a holder center (O) coincides with a processing center position (21) of the lens. An axial deviation measuring mark (81a, 81b) is displayed on the processing target lens (2) to coincide with a reference position mark (80a, 80b) of the lens holder (16), and the circumferential surface of the processing target lens (2) undergoes primary processing. After primary processing, the axial deviation of the processing target lens (2) is measured from the reference position mark (80a, 80b) and axial deviation measuring mark (81a, 81b). When axial deviation exists, the lens holder (16) is removed from the processing target lens (2) and the processing target lens (2) is held again, so that the axial deviation is corrected. After that, the processing target lens (2) undergoes secondary processing.Type: GrantFiled: March 17, 2008Date of Patent: July 10, 2012Assignee: Hoya CorporationInventors: Akira Hamanaka, Takashi Daimaru, Ryo Terai
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Patent number: 7919020Abstract: A method of manufacturing a plastic lens by mixing plural polymerizable components, and immediately after mixing, casting a mixture into a casting mold and conducting polymerization to obtain a molded article. A method of manufacturing a plastic lens by casting a plastic lens starting material liquid flowing out of a casting jig opening into a casting mold and curing the above starting material liquid to form a molded article. A gasket for molding plastic lens comprised of a cylindrical member comprising openings for fitting by insertion of two molds. A casting mold for molding plastic lens, wherein the above molds are detachably held in the above openings of the above gasket so that molding surfaces of the two molds are positioned opposite at a prescribed interval to form a cavity corresponding to a lens shape within the above cylindrical member. A casting jig for plastic lens starting material liquid equipped with a nozzle for casting a plastic lens starting material liquid into the casting mold.Type: GrantFiled: June 8, 2005Date of Patent: April 5, 2011Assignee: Hoya CorporationInventors: Akira Hamanaka, Hideki Kobayashi, Yasuhisa Okamoto, Yukiaki Sunagawa, Nobuhiko Takeda
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Publication number: 20100170627Abstract: A lens pad includes a blank, first adhesive layer, and release sheet. The first adhesive layer is formed on one surface of the blank. The release sheet comes into tight contact with the surface of the first adhesive layer to protect this surface. The arithmetic average roughness of the surface of the release sheet on the side of the first adhesive layer is 0.1 ?m or less. The surface of the first adhesive layer from which the release sheet is peeled off is attached onto a lens as an edging target. A lens pad, a lens pad manufacturing method, a lens manufacturing method, and an adhesive member are also disclosed.Type: ApplicationFiled: December 30, 2009Publication date: July 8, 2010Inventors: Akira Hamanaka, Daiji Sagami
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Publication number: 20100105293Abstract: A lens holder (16) is attached to a processing target lens (2) such that a holder center (O) coincides with a processing center position (21) of the lens. An axial deviation measuring mark (81a, 81b) is displayed on the processing target lens (2) to coincide with a reference position mark (80a, 80b) of the lens holder (16), and the circumferential surface of the processing target lens (2) undergoes primary processing. After primary processing, the axial deviation of the processing target lens (2) is measured from the reference position mark (80a, 80b) and axial deviation measuring mark (81a, 81b). When axial deviation exists, the lens holder (16) is removed from the processing target lens (2) and the processing target lens (2) is held again, so that the axial deviation is corrected. After that, the processing target lens (2) undergoes secondary processing.Type: ApplicationFiled: March 17, 2008Publication date: April 29, 2010Inventors: Akira Hamanaka, Takashi Daimaru, Ryo Terai
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Patent number: 7694404Abstract: A device (20) for assembling a plastic-lens-forming casting mold includes a gasket clamping mechanism (22) which clamps a gasket (2) from its axial direction, a first mold push-in mechanism (23) which pushes in an upper mold (3) fitted in an upper open end of the gasket (2), and a second mold push-in mechanism (24) which pushes in a lower mold (4) fitted in a lower open end of the gasket (2). The gasket clamping mechanism (22) clamps the gasket (2) from the axial direction by a gasket-pressing ring (34) and lower mold ring (35). The first mold push-in mechanism (23) pushes the upper mold (3) into the gasket (2) by a gasket push-in member (58). The second mold push-in mechanism (24) includes a plurality of push pins (68) and pushes up the lower mold (4) to push it into the gasket (2).Type: GrantFiled: November 2, 2007Date of Patent: April 13, 2010Assignee: Hoya CorporationInventors: Tatsuo Nishimoto, Akira Hamanaka, Nobuhiko Takeda
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Publication number: 20080073803Abstract: A device (20) for assembling a plastic-lens-forming casting mold includes a gasket clamping mechanism (22) which clamps a gasket (2) from its axial direction, a first mold push-in mechanism (23) which pushes in an upper mold (3) fitted in an upper open end of the gasket (2), and a second mold push-in mechanism (24) which pushes in a lower mold (4) fitted in a lower open end of the gasket (2). The gasket clamping mechanism (22) clamps the gasket (2) from the axial direction by a gasket-pressing ring (34) and lower mold ring (35). The first mold push-in mechanism (23) pushes the upper mold (3) into the gasket (2) by a gasket push-in member (58). The second mold push-in mechanism (24) includes a plurality of push pins (68) and pushes up the lower mold (4) to push it into the gasket (2).Type: ApplicationFiled: November 2, 2007Publication date: March 27, 2008Inventors: Tatsuo Nishimoto, Akira Hamanaka, Nobuhiko Takeda
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Patent number: 7344370Abstract: A device (20) for assembling a plastic-lens-forming casting mold includes a gasket clamping mechanism (22) which clamps a gasket (2) from its axial direction, a first mold push-in mechanism (23) which pushes in an upper mold (3) fitted in an upper open end of the gasket (2), and a second mold push-in mechanism (24) which pushes in a lower mold (4) fitted in a lower open end of the gasket (2). The gasket clamping mechanism (22) clamps the gasket (2) from the axial direction by a gasket-pressing ring (34) and lower mold ring (35). The first mold push-in mechanism (23) pushes the upper mold (3) into the gasket (2) by a gasket push-in member (58). The second mold push-in mechanism (24) includes a plurality of push pins (68) and pushes up the lower mold (4) to push it into the gasket (2).Type: GrantFiled: December 22, 2003Date of Patent: March 18, 2008Assignee: Hoya CorporationInventors: Tatsuo Nishimoto, Akira Hamanaka, Nobuhiko Takeda
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Publication number: 20080029914Abstract: A method of manufacturing a plastic lens by mixing plural polymerizable components, and immediately after mixing, casting a mixture into a casting mold and conducting polymerization to obtain a molded article. A method of manufacturing a plastic lens by casting a plastic lens starting material liquid flowing out of a casting jig opening into a casting mold and curing the above starting material liquid to form a molded article. A gasket for molding plastic lens comprised of a cylindrical member comprising openings for fitting by insertion two molds. A casting mold for molding plastic lens, wherein the above molds are detachably held in the above openings of the above gasket so that molding surfaces of the two molds are positioned opposite at a prescribed interval to form a cavity corresponding to a lens shape within the above cylindrical member. A casting jig for plastic lens starting material liquid equipped with a nozzle for casting a plastic lens starting material liquid into the casting mold.Type: ApplicationFiled: June 8, 2005Publication date: February 7, 2008Applicant: HOYA CORPORATIONInventor: Akira Hamanaka
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Publication number: 20080018005Abstract: A method of manufacturing a plastic lens by mixing plural polymerizable components, and immediately after mixing, casting a mixture into a casting mold and conducting polymerization to obtain a molded article. A method of manufacturing a plastic lens by casting a plastic lens starting material liquid flowing out of a casting jig opening into a casting mold and curing the above starting material liquid to form a molded article. A gasket for molding plastic lens comprised of a cylindrical member comprising openings for fitting by insertion two molds. A casting mold for molding plastic lens, wherein the above molds are detachably held in the above openings of the above gasket so that molding surfaces of the two molds are positioned opposite at a prescribed interval to form a cavity corresponding to a lens shape within the above cylindrical member. A casting jig for plastic lens starting material liquid equipped with a nozzle for casting a plastic lens starting material liquid into the casting mold.Type: ApplicationFiled: May 31, 2007Publication date: January 24, 2008Inventors: Akira Hamanaka, Hideki Kobayashi, Yasuhisa Okamoto, Yukiaki Sunagawa, Nobuhiko Takeda
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Publication number: 20060151898Abstract: A device (20) for assembling a plastic-lens-forming casting mold includes a gasket clamping mechanism (22) which clamps a gasket (2) from its axial direction, a first mold push-in mechanism (23) which pushes in an upper mold (3) fitted in an upper open end of the gasket (2), and a second mold push-in mechanism (24) which pushes in a lower mold (4) fitted in a lower open end of the gasket (2). The gasket clamping mechanism (22) clamps the gasket (2) from the axial direction by a gasket-pressing ring (34) and lower mold ring (35). The first mold push-in mechanism (23) pushes the upper mold (3) into the gasket (2) by a gasket push-in member (58). The second mold push-in mechanism (24) includes a plurality of push pins (68) and pushes up the lower mold (4) to push it into the gasket (2).Type: ApplicationFiled: December 22, 2003Publication date: July 13, 2006Inventors: Tatsuo Nishimoto, Akira Hamanaka, Nobuhiko Takeda
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Patent number: 4720748Abstract: This invention relates to a cathode ray tube which uses a tension band to afford an implosion protection. The cathode ray tube of this invention includes a panal (21) formed of a face portion (4) which is respectively formed as a curved surface and a skirt portion (5). A mold match line (23) of this panel (21) is formed so as to substantially follow the boundary between the face portion (4) and the skirt portion (5) and a tension band (29) for use in implosion protection is wound around this mold match line (23). Accordingly, the tension of the tension band can effectively be transmitted to the entire periphery of the face portion and thus the implosion protection of the panel can be increased.Type: GrantFiled: April 18, 1985Date of Patent: January 19, 1988Assignee: Sony CorporationInventors: Hiroji Sumiyoshi, Kazuo Omae, Akira Hamanaka, Yuzuru Watanabe