Patents by Inventor Kiyohiro Saito
Kiyohiro Saito 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: 20230328346Abstract: The present disclosure relates to a camera module and an electronic device that can improve heat dissipation. A movable member has an image sensor on a front side and is movable in a direction along an imaging surface of the image sensor, the fixed member is fixed with a predetermined gap interposed between the fixed member and the movable member on a back side of the movable member, and at least one heat dissipating member is fixed to at least one of the fixed member and the movable member and is in contact with the other in the gap. The present disclosure is applicable to a camera module of a sensor-shift system.Type: ApplicationFiled: September 10, 2021Publication date: October 12, 2023Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventors: Shunichiro SHIBAZAKI, Kozo HOSHINO, Shinichi YUZUKI, Tetsuya NAKAGAWA, Kiyohiro SAITO, Yuta SHISHIDO, Kazumi KOBAYASHI, Nobuyuki WATANABE, Masaki HOSHINO
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Patent number: 11630241Abstract: The lens of the present invention includes an indole-based compound represented by General Formula (1), and a polycarbonate resin having a weight average molecular weight of 40,000 to 60,000, wherein the content of the indole-based compound is 0.01 to 0.Type: GrantFiled: May 18, 2018Date of Patent: April 18, 2023Assignee: MITSUI CHEMICALS, INC.Inventors: Yoshiyuki Totani, Kiyohiro Saito
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Patent number: 11061258Abstract: A mold for a plastic lens that arranges an insert member inside a cavity formed between a pair of halved molds, injects and fills molten raw material resin to mold a plastic lens having a predetermined shape, integrally with the insert member. The insert member is arranged on a molding surface on one of the halved molds, a notch to be engaged with a positioning tab formed at a periphery of the insert member is engraved on one parting surface of the halved mold, overlapping with a gate position. Positioning of the insert member is performed by engaging the positioning tab with the notch. With this configuration, in molding a plastic lens having an insert member by injection molding including insert molding, positioning of the insert member is performed at the gate position without deteriorating the quality of a molded product and without increasing the load of post-processing after molding.Type: GrantFiled: March 25, 2015Date of Patent: July 13, 2021Assignee: HOYA LENS THAILAND LTD.Inventors: Kiyohiro Saito, Takashi Suzuki, Kenji Tanagawa, Kiyonori Sato
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Publication number: 20200200945Abstract: The lens of the present invention includes an indole-based compound represented by General Formula (1), and a polycarbonate resin having a weight average molecular weight of 40,000 to 60,000, wherein the content of the indole-based compound is 0.01 to 0.Type: ApplicationFiled: May 18, 2018Publication date: June 25, 2020Applicant: MITSUI CHEMICALS, INC.Inventors: Yoshiyuki TOTANI, Kiyohiro SAITO
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Patent number: 10525645Abstract: In manufacturing a functional plastic lens by loading a functional sheet S having a difference in the accuracy of bending in directions, into a mold 50 and by performing insert molding to integrally mold a lens body with the functional sheet S, a direction in which the accuracy of the bending to the functional sheet S is high is made to be a reference axis A, and the functional sheet S is loaded into the mold 50 to inhibit a filling direction of resin and the reference axis A from being orthogonal to each other. With this arrangement, the functional plastic lens having high quality is provided.Type: GrantFiled: March 31, 2016Date of Patent: January 7, 2020Assignee: HOYA LENS THAILAND LTD.Inventors: Kiyohiro Saito, Takashi Suzuki, Kiyonori Sato, Kenji Tanagawa
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Publication number: 20180043645Abstract: In manufacturing a functional plastic lens by loading a functional sheet S having a difference in the accuracy of bending in directions, into a mold 50 and by performing insert molding to integrally mold a lens body with the functional sheet S, a direction in which the accuracy of the bending to the functional sheet S is high is made to be a reference axis A, and the functional sheet S is loaded into the mold 50 to inhibit a filling direction of resin and the reference axis A from being orthogonal to each other. With this arrangement, the functional plastic lens having high quality is provided.Type: ApplicationFiled: March 31, 2016Publication date: February 15, 2018Applicant: HOYA LENS THAILAND LTD.Inventors: Kiyohiro SAITO, Takashi SUZUKI, Kiyonori SATO, Kenji TANAGAWA
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Publication number: 20170330508Abstract: A pixel unit (P) of the invention includes a first input terminal (CKIN), a first output terminal (CKOUT), a signal generator (30), and a display device (25). The signal generator (30) is provided on a signal path extending from the first input terminal (CKIN) to the first output terminal (CKOUT). The signal generator (30) generates a second signal (CKA) on the basis of a first signal (CK) and outputs the generated second signal. The signal generator (30) generates a rising edge and a falling edge of the second signal (CKA) on the basis of one of a rising edge and a falling edge of the first signal (CK).Type: ApplicationFiled: October 29, 2015Publication date: November 16, 2017Inventors: KIYOHIRO SAITO, HIDEYUKI SUZUKI, EIICHI NAKAMOTO
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Publication number: 20170131573Abstract: A mold for a plastic lens that arranges an insert member inside a cavity formed between a pair of halved molds, injects and fills molten raw material resin to mold a plastic lens having a predetermined shape, integrally with the insert member. The insert member is arranged on a molding surface on one of the halved molds, a notch to be engaged with a positioning tab formed at a periphery of the insert member is engraved on one parting surface of the halved mold, overlapping with a gate position. Positioning of the insert member is performed by engaging the positioning tab with the notch. With this configuration, in molding a plastic lens having an insert member by injection molding including insert molding, positioning of the insert member is performed at the gate position without deteriorating the quality of a molded product and without increasing the load of post-processing after molding.Type: ApplicationFiled: March 25, 2015Publication date: May 11, 2017Applicant: HOYA LENS THAILAND LTD.Inventors: Kiyohiro SAITO, Takashi SUZUKI, Kenji TANAGAWA, Kiyonori SATO
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Publication number: 20150061979Abstract: A display unit includes: a display section including a plurality of unit pixels; and a display drive section configured to generate a plurality of clock signals and supply the clock signals to the display section, the clock signals including two or more clock signals with phases different from one another.Type: ApplicationFiled: August 12, 2014Publication date: March 5, 2015Inventors: Hideyuki SUZUKI, Yoshifumi MIYAJIMA, Kazukuni TAKANOHASHI, Kiyohiro SAITO
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Patent number: 8506857Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.Type: GrantFiled: December 4, 2007Date of Patent: August 13, 2013Assignee: Hoya CorporationInventors: Tatsuo Nishimoto, Kiyohiro Saito, Kenji Tanagawa, Tetsuya Uchida
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Publication number: 20080116597Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.Type: ApplicationFiled: December 4, 2007Publication date: May 22, 2008Applicant: HOYA CORPORATIONInventors: Tatsuo Nishimoto, Kiyohiro Saito, Kenji Tanagawa, Tetsuya Uchida
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Publication number: 20080118594Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.Type: ApplicationFiled: December 4, 2007Publication date: May 22, 2008Applicant: HOYA CORPORATIONInventors: Tatsuo Nishimoto, Kiyohiro Saito, Kenji Tanagawa, Tetsuya Uchida
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Publication number: 20080093756Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.Type: ApplicationFiled: December 4, 2007Publication date: April 24, 2008Applicant: HOYA CORPORATIONInventors: Tatsuo Nishimoto, Kiyohiro Saito, Kenji Tanagawa, Tetsuya Uchida
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Patent number: 7332110Abstract: An annular insert (4) is arranged in the optical component molding cavity of a mold to surround an outer periphery of raw material resin in a direction in which the resin is distributed in the cavity to limit the distribution of the raw material resin and define an outer profile of a lens (L). With this arrangement, it is only necessary to provide raw material resin only by a quantity equal to the volume of the region surrounded by the molding surfaces of upper and lower mold inserts (14, 24) and the inner peripheral edge of the annular insert (4) of the mold, so that the required volume of the raw material resin can be reduced. Since the pressure is preserved at the outer periphery of the distributed resin by the presence of the annular insert (4), the residual strain of the resin is minimized to prevent generation of sink mark, thereby providing excellent optical characteristics on the lens (L).Type: GrantFiled: December 6, 2004Date of Patent: February 19, 2008Assignee: Hoya CorporationInventors: Kazuo Inoue, Kiyohiro Saito, Tadayoshi Uehara
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Patent number: 7326375Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.Type: GrantFiled: October 28, 2002Date of Patent: February 5, 2008Assignee: Hoya CorporationInventors: Tatsuo Nishimoto, Kiyohiro Saito, Kenji Tanagawa, Tetsuya Uchida
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Publication number: 20060249864Abstract: A molding method is provided which can further improve transferability and further reduce strain and which is suitable for molding of a product with high accuracy and high quality. The molding method in which a resin material is filled into a cavity formed in a mold and pressurized to mold a product in a predetermined shape, and the method comprises: preparing the mold having a product cavity to mold the product made of a resin, a dummy cavity to mold a dummy product, and a runner by which the product cavity and the dummy cavity are connected; filling the resin material into the product cavity and supplying the resin material to at least part of the dummy cavity; and applying ultrasonic vibration to the resin material in the dummy cavity at predetermined timing.Type: ApplicationFiled: April 22, 2004Publication date: November 9, 2006Applicants: Hoya Corporation, Idemitsu Kosan Co., Ltd.Inventors: Kiyohiro Saito, Kazuo Inoue, Atsushi Sato, Hiroyoshi Minooka
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Publication number: 20050212154Abstract: An annular insert (4) is arranged in the optical component molding cavity of a mold to surround an outer periphery of raw material resin in a direction in which the resin is distributed in the cavity to limit the distribution of the raw material resin and define an outer profile of a lens (L). With this arrangement, it is only necessary to provide raw material resin only by a quantity equal to the volume of the region surrounded by the molding surfaces of upper and lower mold inserts (14, 24) and the inner peripheral edge of the annular insert (4) of the mold, so that the required volume of the raw material resin can be reduced. Since the pressure is preserved at the outer periphery of the distributed resin by the presence of the annular insert (4), the residual strain of the resin is minimized to prevent generation of sink mark, thereby providing excellent optical characteristics on the lens (L).Type: ApplicationFiled: December 6, 2004Publication date: September 29, 2005Applicant: HOYA CORPORATIONInventors: Kazuo Inoue, Kiyohiro Saito, Tadayoshi Uehara
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Publication number: 20030080448Abstract: An injection compression molding method of a lens is provided, where a toggle link mechanism (65) is actuated to close a molding die (50) and a movable die plate (64) is moved to a position establishing a cavity thickness of greater than a thickness of an article to be molded while the die is closed. After injecting a molten resin into the cavity, the molten resin is sealed in the cavity and the toggle link mechanism (65) is actuated to advance the movable die plate (64) toward a fixed die plate (61), the relative position of a rear die plate (62) and the movable die plate (64) is made constant at a position where extension of a tie bar (63) becomes a predetermined value, and the molten resin is cooled for a predetermined time after completion of pressurizing the resin.Type: ApplicationFiled: October 28, 2002Publication date: May 1, 2003Applicant: HOYA CORPORATIONInventors: Tatsuo Nishimoto, Kiyohiro Saito, Kenji Tanagawa, Tetsuya Uchida
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Patent number: 6499986Abstract: A plastic trial lens having a grip portion gripped when the lens is set in trial frames for trial lenses, an injection molded product for making the trial lenses, and a mold assembly for molding the injection molded product are provided. In the injection molded product molded by means of the mold assembly in an injection compression molding machine, a grip portion and a liquid guided and collected area are molded simultaneously with a lens portion on a periphery of the lens portion. When the injection molded product is dipped into hard coat liquid, the hard coat liquid is guided in the liquid guided and collected area to drip down and the remaining liquid without dripping down is collected in the liquid guided and collected area, thereby forming a coating film of uniform thickness on the lens portion. The plastic trial lens which is integrally provided with the grip portion is finished after the liquid guided and collected area is removed.Type: GrantFiled: May 1, 2000Date of Patent: December 31, 2002Assignee: Hoya CorporationInventor: Kiyohiro Saito
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Patent number: RE38617Abstract: A cavity 22 in an injection molding assembly includes a lower mold insert 21 for shaping a lens convex surface and an upper mold insert 20 for shaping a lens concave surface. When the heated injection molding assembly is cooled and a lens is ejected after a molten resin is pressurized by the upper mold insert 20, the temperature of the lower mold insert 21 is lowered below the temperature of the upper mold insert 20, which prevents the molded lens from bending at a central portion and enable high transfer precision of insert shapes.Type: GrantFiled: November 6, 2001Date of Patent: October 12, 2004Assignee: Hoya CorporationInventors: Kiyohiro Saito, Hiroshi Asami