Patents by Inventor Tatsuo Nagashima
Tatsuo Nagashima 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: 20230347718Abstract: A decrease in the detection accuracy of infrared rays is suppressed. Vehicle glass includes a light shielding region in which a far-infrared ray transmitting region is formed, the far-infrared ray transmitting region including an opening and a far-infrared ray transmitting member (20) disposed in the opening. In the far-infrared ray transmitting member (20), the average transmittance of far-infrared rays having wavelengths of 8 ?m to 13 ?m at a first position (P1) in a case where the far-infrared rays are emitted in a direction perpendicular to a surface (20a) on a vehicle exterior side is different from the average transmittance of the far-infrared rays having wavelengths of 8 ?m to 13 ?m at a second position (P2) that is lower than the first position (P1) in the vertical direction in a case where the vehicle glass is mounted to a vehicle.Type: ApplicationFiled: June 30, 2023Publication date: November 2, 2023Applicant: AGC Inc.Inventors: Tatsuo NAGASHIMA, Mitsuyoshi KOBAYASHI, Yoji YASUI, Kenji KITAOKA
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Publication number: 20230345092Abstract: A colliding object is suppressed from reaching a driver’s seat, and an occupant and an object in a vehicle compartment are suppressed from being thrown out of a vehicle. In a vehicle glass 1, a far-infrared transmitting region in which an opening portion and a far-infrared transmissive member 20 arranged in the opening portion are provided is formed in a light shielding region. The vehicle glass 1 includes a protective member 40 that is provided on a vehicle interior side of the far-infrared transmissive member 20 and overlaps with at least a part of the far-infrared transmissive member 20 when viewed from a direction orthogonal to a vehicle exterior side surface 20a of the far-infrared transmissive member 20.Type: ApplicationFiled: June 30, 2023Publication date: October 26, 2023Applicant: AGC Inc.Inventors: Tatsuo NAGASHIMA, Takafumi INOUE, Kenji KITAOKA
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Publication number: 20230228925Abstract: To appropriately transmit far-infrared rays while ensuring design. A far-infrared ray transmission member (20) includes a base material (30) configured to transmit far-infrared rays, and a functional film (31) formed on the base material (30). Dispersion of reflectances with respect to pieces of light at a wavelength of 360 nm to 830 nm in increments of 1 nm is equal to or smaller than 30, a reflectance with respect to visible light defined by JIS R3106 is equal to or lower than 25%, and an average transmittance with respect to light at a wavelength of 8 ?m to 12 ?m is equal to or higher than 50%.Type: ApplicationFiled: March 22, 2023Publication date: July 20, 2023Applicant: AGC Inc.Inventors: Yoji YASUI, Kazunobu MAESHIGE, Takahiro MASHIMO, Takuji OYAMA, Nobutaka AOMINE, Tatsuo NAGASHIMA, Mitsuyoshi KOBAYASHI
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Patent number: 11554985Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1). A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.Type: GrantFiled: December 17, 2019Date of Patent: January 17, 2023Assignee: AGC INC.Inventors: Shinichi Amma, Tatsuo Nagashima
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Publication number: 20230001772Abstract: To suppress deterioration in a wiping property of wipers and increase in a load on the wipers. In glass for vehicles (1) including a light blocking region, a far-infrared ray transmission region is formed in the light blocking region, the far-infrared ray transmission region being provided with an opening (19) and a far-infrared ray transmission member (20) disposed in the opening (19), and the glass for vehicles (1) and the far-infrared ray transmission member (20) are bonded to each other with a frame member (30) interposed therebetween. Regarding the frame member (30), where a length of the longest straight line among straight lines each connecting optional two points on an inner circumference on a side facing the opening (19) in a surface on a vehicle exterior side is D, and a thickness of a portion projecting from a surface on the vehicle exterior side of the glass for vehicles (1) is t, D2/t is larger than 1250, and t is equal to or smaller than 2.5 mm.Type: ApplicationFiled: September 1, 2022Publication date: January 5, 2023Applicant: AGC Inc.Inventors: Tatsuo NAGASHIMA, Hiroshi YAMAKAWA, Takafumi INOUE
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Patent number: 11530159Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1). A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.Type: GrantFiled: December 17, 2019Date of Patent: December 20, 2022Assignee: AGC INC.Inventors: Shinichi Amma, Tatsuo Nagashima
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Publication number: 20220289121Abstract: Glass (1) for vehicles includes a light blocking region (A2) in which a far-infrared ray transmission region (B) provided with an opening and a far-infrared ray transmission member arranged in the opening, and a visible light transmission region (C) transmitting visible light are formed. The opening is formed between an upper edge part (1a) of the glass (1) and a first position (P1) in a first direction from the upper edge part (1a) toward a lower edge part (1b) of the glass (1), the first position (P1) is a position at which a distance from the upper edge part (1a) is 30% of a length from the upper edge part (1a) to the lower edge part (1b), and between a second position (P2) and a third position (P3) in a second direction from a side edge part (1c) toward a side edge part (1d) of the glass (1) for vehicles.Type: ApplicationFiled: June 1, 2022Publication date: September 15, 2022Applicant: AGC Inc.Inventors: Tatsuo NAGASHIMA, Yutaka KITAJIMA
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Publication number: 20220132047Abstract: The present invention aims to provide a vehicular exterior member that is excellent in strength and cost, and sufficiently ensures a viewing field of sharpness of a thermal image obtained by a far-infrared camera. A vehicular exterior member that includes a light blocking region and is configured to be attached to a vehicle equipped with a far-infrared camera. The vehicular exterior member further includes, in the light blocking region, a far-infrared ray transmitting region having an opening and a far-infrared ray transmitting member disposed in the opening. An average transmittance of far-infrared rays having a wavelength ranging from 8 to 13 ?m of the far-infrared ray transmitting member is equal to or larger than 25%. A length of the longest straight line in straight lines connecting any desired two points on a surface on a vehicle exterior side of the far-infrared ray transmitting member is equal to or smaller than 80 mm.Type: ApplicationFiled: January 6, 2022Publication date: April 28, 2022Applicant: AGC Inc.Inventors: Tatsuo NAGASHIMA, Kenji KITAOKA
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Publication number: 20210132273Abstract: An optical member includes a transparent substrate containing at least one substance selected from glass, a glass ceramic, silicon, and sapphire, and having an infrared high-transmittance region in which an optical transmittance is 78% or more in a wavelength band of 700 nm to 1800 nm; and an optical interference film disposed on a main surface of the transparent substrate corresponding to the infrared high-transmittance region, wherein a transmittance of light, of the optical member, of at least one wavelength ?3 in the wavelength band of 700 nm to 1800 nm in a region of the optical member corresponding to the infrared high-transmittance region of the transparent substrate has a minimum value of 86.5% or more and has a difference between the minimum value and a maximum value of 9% or less in a range where an incidence angle is from 0 degrees to 60 degrees.Type: ApplicationFiled: January 11, 2021Publication date: May 6, 2021Applicant: AGC Inc.Inventors: Hiroyuki YAMAMOTO, Takahiro MASHIMO, Takuji OYAMA, Shinya TAHARA, Tatsuo NAGASHIMA
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Publication number: 20200325063Abstract: To provide optical glass having high refractive index and low density and having favorable production properties. An optical glass having refractive index (nd) of from 1.71 to 2.00, density of at most 5.0 g/cm3, a temperature at which the viscosity of the glass is log ?=2 of from 750 to 1,200° C. and devitrification temperature of at most 1,300° C., and containing from 0% to 21.5% of TiO2 as represented by mol % based on oxides. The optical glass has high refractive index and low density, has favorable production properties, and is suitable as an optical member for wearable devices, for vehicles, for robots, etc.Type: ApplicationFiled: May 7, 2020Publication date: October 15, 2020Applicant: AGC Inc.Inventors: Shinichi AMMA, Tatsuo NAGASHIMA
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Publication number: 20200278483Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*?4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*/|a*|?0.55 under A light source in a CIELab representation, and satisfying b*?0.1.Type: ApplicationFiled: May 18, 2020Publication date: September 3, 2020Applicant: AGC INC.Inventors: Shinichi AMMA, Tatsuo NAGASHIMA
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Publication number: 20200247712Abstract: An optical glass has a refractive index (nd) of 1.55 or more. A difference (Tf?Tg) between a fictive temperature (Tf) and a glass transition temperature (Tg) of the optical glass is 0° C. or more. The optical glass may have a crack initiation load L of 350 mN or more.Type: ApplicationFiled: April 20, 2020Publication date: August 6, 2020Applicant: AGC INC.Inventors: Shinichi AMMA, Tatsuo NAGASHIMA
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Publication number: 20200123044Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1) A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.Type: ApplicationFiled: December 17, 2019Publication date: April 23, 2020Applicant: AGC INC.Inventors: Shinichi AMMA, Tatsuo NAGASHIMA
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Patent number: 10294144Abstract: There is provided an optical glass having high infrared transmittance and being useful as an on-vehicle infrared sensor and the like. An optical glass including, in expression of atomic %: Ge+Ga; 6% to 30%; S+Se+Te; 50% to 85%; and Ti; 0.001% to 0.5%, wherein a wavelength (?T10%) at a long-wavelength side end in which infrared transmittance in a glass plate of the optical glass converted to a thickness of 1 mm becomes 10% is 12 ?m or more.Type: GrantFiled: May 15, 2018Date of Patent: May 21, 2019Assignee: AGC Inc.Inventors: Tatsuo Nagashima, Hiroyasu Miyazawa, Kenji Kitaoka
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Patent number: 10177610Abstract: A stator includes a stator core, an insulating body, a coil, and a resin-molded product. The stator core includes a circumferentially side surface and an axially upper surface. The insulating body includes a side wall and an upper wall. The side wall covers the circumferentially side surface of the stator core. The upper wall covers the axially upper surface of the stator core. A radially inner side end surface of the upper wall is positioned farther toward a radially outer side than a radially inner side end surface of the side wall. The resin-molded product covers the coil.Type: GrantFiled: January 16, 2015Date of Patent: January 8, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kentaro Haruno, Tomohiko Miyamoto, Tatsuo Nagashima
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Publication number: 20180257977Abstract: There is provided an optical glass having high infrared transmittance and being useful as an on-vehicle infrared sensor and the like. An optical glass including, in expression of atomic %: Ge+Ga; 6% to 30%; S+Se+Te; 50% to 85%; and Ti; 0.001% to 0.5%, wherein a wavelength (?T10%) at a long-wavelength side end in which infrared transmittance in a glass plate of the optical glass converted to a thickness of 1 mm becomes 10% is 12 ?m or more.Type: ApplicationFiled: May 15, 2018Publication date: September 13, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Tatsuo NAGASHIMA, Hiroyasu MIYAZAWA, Kenji KITAOKA
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Publication number: 20180251395Abstract: Provided is an optical glass suitable for an imaging lens or the like used for a vehicle-mounted camera exposed to harsh environment, having a high refractive index and high strength. The optical glass has a strengthened layer at a surface layer, and a depth of the strengthened layer is 1 ?m or more from a surface of the optical glass, and a refractive index (nd) of the optical glass is 1.73 to 2.10.Type: ApplicationFiled: May 2, 2018Publication date: September 6, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shusaku AKIBA, Tatsuo NAGASHIMA, Shigeki SAWAMURA
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Publication number: 20180244559Abstract: Provided is an optical glass suitable for an imaging lens or the like used for a vehicle-mounted camera exposed to harsh environment, having a high refractive index and high strength, excellent crack resistance, and a sufficiently low glass transition point and devitrification temperature. In the optical glass, nd is 1.70 or more and 2.10 or less, Tg is 500° C. or more and 630° C. or less, the devitrification temperature is 1300° C. or less, a specific gravity is 4.0 g/cm3 or less, a crack initiation load (CIL) is 20 gf or more, and a fracture toughness value (Kc) is 0.60 MPa·m1/2 or more.Type: ApplicationFiled: May 1, 2018Publication date: August 30, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shusaku AKIBA, Tatsuo NAGASHIMA, Shigeki SAWAMURA
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Publication number: 20180194671Abstract: Provided is an optical glass having a high refractive index, a low density, and good manufacturing properties. An optical glass having: a refractive index (nd) of 1.68 to 1.85; a density (d) of 4.0 g/cm3 or less; and a temperature where a viscosity of glass becomes log ?=2 of 950 to 1200° C., and an optical component using the optical glass are provided. This optical glass has the high refractive index, the low density, and the good manufacturing properties, and is suitable as the optical glass of wearable equipment, for a vehicle mounting, for a robot mounting, and so on.Type: ApplicationFiled: March 1, 2018Publication date: July 12, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shin-ichi AMMA, Tatsuo NAGASHIMA, Shusaku AKIBA
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Publication number: 20180141851Abstract: Provided is an optical glass having a high refractive index, a low density, and good manufacturing properties. An optical glass having: a refractive index (nd) of 1.68 to 1.85; a density (d) of 4.0 g/cm3 or less; and a temperature where a viscosity of glass becomes log ?=2 of 950 to 1200° C., and an optical component using the optical glass are provided. This optical glass has the high refractive index, the low density, and the good manufacturing properties, and is suitable as the optical glass of wearable equipment, for a vehicle mounting, for a robot mounting, and so on.Type: ApplicationFiled: January 3, 2018Publication date: May 24, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shin-ichi Amma, Tatsuo Nagashima, Shusaku Akiba