Patents by Inventor Yukio Sekine
Yukio Sekine 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: 11899174Abstract: There is provided a compact and high-resolution imaging lens at a low cost.Type: GrantFiled: September 30, 2020Date of Patent: February 13, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Patent number: 11899173Abstract: There is provided a compact and high-resolution imaging lens at a low cost.Type: GrantFiled: September 30, 2020Date of Patent: February 13, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Patent number: 11874440Abstract: There is provided a compact and high-resolution imaging lens at a low cost.Type: GrantFiled: September 30, 2020Date of Patent: January 16, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Patent number: 11874433Abstract: There is provided a compact and high-resolution imaging lens at a low cost.Type: GrantFiled: September 30, 2020Date of Patent: January 16, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Patent number: 11796766Abstract: There is provided a compact and high-resolution imaging lens at a low cost.Type: GrantFiled: September 30, 2020Date of Patent: October 24, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Patent number: 11754813Abstract: There is provided an imaging lens with high-resolution which satisfies demand of the wide field of view, the low-profileness and the low F-number, and excellently corrects aberrations. An imaging lens comprises in order from an object side to an image side, a first lens having positive refractive power and a convex surface facing the object side near the optical axis, a second lens having negative refractive power near the optical axis, a third lens having the positive refractive power near the optical axis, a fourth lens, and a fifth lens having the negative refractive power and a concave surface facing the image side near the optical axis, wherein the image-side surface of said fifth lens is formed as an aspheric surface having at least one off-axial pole point, and predetermined conditional expressions are satisfied.Type: GrantFiled: June 30, 2021Date of Patent: September 12, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yukio Sekine, Masaya Hashimoto
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Patent number: 11754814Abstract: There is provided an imaging lens with high-resolution which satisfies demand of the wide field of view, the low-profileness and the low F-number, and excellently corrects aberrations. An imaging lens comprises in order from an object side to an image side, a first lens having positive refractive power and a convex surface facing the object side near the optical axis, a second lens having negative refractive power near the optical axis, a third lens having the positive refractive power near the optical axis, a fourth lens, and a fifth lens having the negative refractive power and a concave surface facing the image side near the optical axis, wherein the image-side surface of said fifth lens is formed as an aspheric surface having at least one off-axial pole point, and predetermined conditional expressions are satisfied.Type: GrantFiled: August 2, 2021Date of Patent: September 12, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yukio Sekine, Masaya Hashimoto
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Patent number: 11675162Abstract: There is provided an imaging lens with high resolution which satisfies in well balance the low-profileness and the low F-number and properly corrects aberrations. An imaging lens comprises a first lens having positive refractive power, a second lens having the positive refractive power, a third lens, a fourth lens, a fifth lens being a double-sided aspheric lens, and a sixth lens being double-sided aspheric lens and having a concave surface facing the image side near the optical axis, wherein the image-side surface of the sixth lens is an aspheric surface changing to the convex surface at a peripheral area.Type: GrantFiled: June 8, 2020Date of Patent: June 13, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Koji Nitta, Yukio Sekine, Masaya Hashimoto
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Patent number: 11668897Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power having a convex object-side surface in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens with negative refractive power in a paraxial region, a fourth lens with positive refractive power in a paraxial region, and a fifth lens with negative refractive power having a convex image-side surface in a paraxial region, and predetermined conditional expressions are satisfied.Type: GrantFiled: September 10, 2020Date of Patent: June 6, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yukio Sekine, Kenichi Kamada
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Patent number: 11668901Abstract: There is provided an imaging lens with high resolution which satisfies in well balance the low-profileness and the low F-number and properly corrects aberrations. An imaging lens comprises a first lens having positive refractive power, a second lens having the positive refractive power, a third lens, a fourth lens, a fifth lens being a double-sided aspheric lens, and a sixth lens being double-sided aspheric lens and having a concave surface facing the image side near the optical axis, wherein the image-side surface of the sixth lens is an aspheric surface changing to the convex surface at a peripheral area.Type: GrantFiled: June 8, 2020Date of Patent: June 6, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTDInventors: Koji Nitta, Yukio Sekine, Masaya Hashimoto
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Publication number: 20230064302Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens, a third lens, a fourth lens, a fifth lens with positive refractive power, a sixth lens, and a seventh lens with negative refractive power, wherein said first lens has an object-side surface being convex in a paraxial region, and said fifth lens has an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.Type: ApplicationFiled: November 24, 2021Publication date: March 2, 2023Inventors: Yukio SEKINE, Koki TOKUNO
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Patent number: 11467383Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features a low F-value, low-profile design and a wide field of view. Designed for a solid-state image sensor, the imaging lens includes constituent lenses arranged in order from an object side to an image side: a first positive refractive power lens; a second negative refractive power lens; a third lens; a fourth lens; a fifth lens; a sixth lens having a concave image-side surface near an optical axis; and a seventh negative refractive power lens.Type: GrantFiled: December 2, 2019Date of Patent: October 11, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Patent number: 11422337Abstract: There is provided an imaging lens with high resolution which effectively achieves low-profileness while maintaining the wide field of view, and favorably corrects aberrations. The imaging lens comprising a first lens having negative refractive power, a second lens having positive refractive power, a third lens, a fourth lens having positive refractive power, a fifth lens having negative refractive power as a double-sided aspheric lens, and a sixth lens as a double-sided aspheric lens, wherein the first lens has a concave surface facing the image side, and the aspheric surface on the image side of the sixth lens is formed as a concave surface near the optical axis and has at least one pole point at an off-axial point, and a below conditional expression (1) is satisfied: ??45°??(1) where ?: a half field of view.Type: GrantFiled: December 30, 2019Date of Patent: August 23, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTDInventor: Yukio Sekine
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Patent number: 11422338Abstract: There is provided an imaging lens with high resolution which effectively achieves low-profileness while maintaining the wide field of view, and favorably corrects aberrations. The imaging lens comprising a first lens having negative refractive power, a second lens having positive refractive power, a third lens, a fourth lens having positive refractive power, a fifth lens having negative refractive power as a double-sided aspheric lens, and a sixth lens as a double-sided aspheric lens, wherein the first lens has a concave surface facing the image side, and the aspheric surface on the image side of the sixth lens is formed as a concave surface near the optical axis and has at least one pole point at an off-axial point, and a below conditional expression (1) is satisfied: ??45°??(1) where ?: a half field of view.Type: GrantFiled: December 30, 2019Date of Patent: August 23, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTDInventor: Yukio Sekine
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Patent number: 11391914Abstract: There is provided an imaging lens with high resolution which effectively achieves low-profileness while maintaining the wide field of view, and favorably corrects aberrations. The imaging lens comprising a first lens having negative refractive power, a second lens having positive refractive power, a third lens, a fourth lens having positive refractive power, a fifth lens having negative refractive power as a double-sided aspheric lens, and a sixth lens as a double-sided aspheric lens, wherein the first lens has a concave surface facing the image side, and the aspheric surface on the image side of the sixth lens is formed as a concave surface near the optical axis and has at least one pole point at an off-axial point, and a below conditional expression (1) is satisfied: ??45°??(1) where ?: a half field of view.Type: GrantFiled: December 30, 2019Date of Patent: July 19, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine
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Publication number: 20220179179Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with positive refractive power, a sixth lens, and a seventh lens with negative refractive power, wherein said first lens has an object-side surface being convex in a paraxial region, said second lens has an image-side surface being convex in a paraxial region, said third lens has an object-side surface being concave in a paraxial region, said fourth lens has an object-side surface being concave in a paraxial region, said sixth lens has an object-side surface being convex in a paraxial region, and said seventh lens has an image-side surface being concave in a paraxial region.Type: ApplicationFiled: August 19, 2021Publication date: June 9, 2022Inventors: Yukio SEKINE, Ruidong YANG
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Publication number: 20220155567Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive or negative refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power, wherein said first lens is formed in a meniscus shape having an object-side surface being convex in a paraxial region, said second lens has an object-side surface being convex in a paraxial region, said sixth lens has an image-side surface being concave in a paraxial region, and the predetermined conditional expressions are satisfied.Type: ApplicationFiled: April 28, 2021Publication date: May 19, 2022Inventors: Yukio SEKINE, Koki TOKUNO, Zhiyu HUANG
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Publication number: 20220155568Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of a low profile and a low F-number. An imaging lens comprises in order from an object side to an image side, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive or negative refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power, wherein said first lens is formed in a meniscus shape having an object-side surface being convex in a paraxial region, said second lens has an object-side surface being convex in a paraxial region, said sixth lens has an image-side surface being concave in a paraxial region, and the predetermined conditional expressions are satisfied.Type: ApplicationFiled: August 2, 2021Publication date: May 19, 2022Inventors: Yukio SEKINE, Koki TOKUNO, Zhiyu HUANG
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Patent number: 11294147Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of wide field of view, low-profileness and low F-number in well balance. An imaging lens comprises in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens having a concave surface facing the object side near an optical axis, a fifth lens, and a sixth lens having the concave surface facing the image side near the optical axis and negative refractive power, wherein said second lens has a convex surface facing the object side near the optical axis, composite refractive power of said second lens, said third lens and said fourth lens is negative, and below conditional expressions (1) and (2) are satisfied: 0.85<vd1/(vd2+vd3)<1.95 ??(1) 0.15<vd5/vd6<0.Type: GrantFiled: May 29, 2020Date of Patent: April 5, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yukio Sekine, Kenichi Kamada, Koji Nitta
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Patent number: 11287617Abstract: An imaging lens which uses a larger number of constituent lenses for higher performance and features a low F-value, low-profile design and a wide field of view. Designed for a solid-state image sensor, the imaging lens includes constituent lenses arranged in order from an object side to an image side: a first positive refractive power lens; a second negative refractive power lens; a third lens; a fourth lens; a fifth lens; a sixth lens having a concave image-side surface near an optical axis; and a seventh negative refractive power lens.Type: GrantFiled: December 2, 2019Date of Patent: March 29, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Yukio Sekine