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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Publication number: 20210011262Abstract: There is provided a compact and high-resolution imaging lens at a low cost.Type: ApplicationFiled: September 30, 2020Publication date: January 14, 2021Inventor: Yukio SEKINE
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Patent number: 10816775Abstract: A compact imaging lens with high-resolution, low profile, low F-value, and wide field of view, properly corrects various aberrations and comprises a first lens having positive refractive power and a convex surface facing the object side, a second lens having a meniscus shape with negative refractive power and a concave surface facing the image side, a third lens having positive refractive power and a convex surface facing the object side, a fourth lens having a meniscus shape with positive refractive power and a convex surface facing the image side, and a fifth lens having negative refractive power and a concave surface facing the image side as a double-sided aspheric lens. A pole point at an off-axial point is provided on the image-side surface, and 40<|r6/f|<90 where f: the focal length of the overall optical system and r6: curvature radius of the image-side surface of the third lens.Type: GrantFiled: September 5, 2019Date of Patent: October 27, 2020Assignee: KANTATSU CO., LTD.Inventor: Yukio Sekine
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Patent number: 10816776Abstract: A compact imaging lens with high-resolution, low profile, low F-value, and wide field of view, properly corrects various aberrations and comprises a first lens having positive refractive power and a convex surface facing the object side, a second lens having a meniscus shape with negative refractive power and a concave surface facing the image side, a third lens having positive refractive power and a convex surface facing the object side, a fourth lens having a meniscus shape with positive refractive power and a convex surface facing the image side, and a fifth lens having negative refractive power and a concave surface facing the image side as a double-sided aspheric lens. A pole point at an off-axial point is provided on the image-side surface, and 40<|r6/f|<90 where f: the focal length of the overall optical system and r6: curvature radius of the image-side surface of the third lens.Type: GrantFiled: September 5, 2019Date of Patent: October 27, 2020Assignee: KANTATSU CO., LTD.Inventor: Yukio Sekine
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Publication number: 20200301104Abstract: 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: ApplicationFiled: June 8, 2020Publication date: September 24, 2020Inventors: Koji NITTA, Yukio SEKINE, Masaya HASHIMOTO
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Publication number: 20200301103Abstract: 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: ApplicationFiled: June 8, 2020Publication date: September 24, 2020Inventors: Koji NITTA, Yukio SEKINE, Masaya HASHIMOTO
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Publication number: 20200292786Abstract: 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: ApplicationFiled: May 29, 2020Publication date: September 17, 2020Inventors: Yukio Sekine, Kenichi Kamada, Koji Nitta
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Publication number: 20200292785Abstract: 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: ApplicationFiled: May 29, 2020Publication date: September 17, 2020Inventors: Yukio SEKINE, Kenichi KAMADA, Koji NITTA
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Patent number: 10754125Abstract: 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: May 29, 2018Date of Patent: August 25, 2020Assignee: KANTATSU CO., LTD.Inventors: Koji Nitta, Yukio Sekine, Masaya Hashimoto
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Patent number: 10678021Abstract: 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: September 28, 2018Date of Patent: June 9, 2020Assignee: KANTATSU CO., LTD.Inventors: Yukio Sekine, Kenichi Kamada, Koji Nitta
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Publication number: 20200132966Abstract: 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°??91) where ?: a half field of view.Type: ApplicationFiled: December 30, 2019Publication date: April 30, 2020Inventor: Yukio SEKINE
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Publication number: 20200132964Abstract: 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° where ?: a half field of view.Type: ApplicationFiled: December 30, 2019Publication date: April 30, 2020Inventor: Yukio SEKINE
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Publication number: 20200132965Abstract: 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: ApplicationFiled: December 30, 2019Publication date: April 30, 2020Inventor: Yukio SEKINE
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Publication number: 20200103626Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103623Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103625Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103628Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103627Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103624Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103622Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE
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Publication number: 20200103621Abstract: 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: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventor: Yukio SEKINE