Patents by Inventor Yoji Kubota
Yoji Kubota 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: 11829006Abstract: An imaging lens includes a first lens; a second lens; a third lens having negative refractive power; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave at a paraxial region thereof. The seventh lens is formed in a shape so that a surface thereof on the image plane side is aspheric. The first lens and the second lens have a specific composite focal length. The third lens have a specific focal length.Type: GrantFiled: December 3, 2020Date of Patent: November 28, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11822151Abstract: An imaging lens includes a first lens; a second lens; a third lens having negative refractive power; a fourth lens having positive refractive power; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens has at least one aspheric surface. The fifth lens has two aspheric surfaces. The sixth lens is formed in a shape so that a surface thereof on the object side is convex at a paraxial region thereof and a surface thereof on the image plane side is concave at a paraxial region thereof. The seventh lens has two aspheric surfaces.Type: GrantFiled: December 3, 2020Date of Patent: November 21, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTDInventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11740433Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side with spaces in between each of the lenses. The first lens has one aspheric surface. The third lens has one aspheric surface. The fourth lens has one aspheric surface. The fifth lens has two aspheric surfaces and the surface thereof on the object side is convex toward the object side near an optical axis thereof. The sixth lens has two aspheric surfaces and the surface thereof on the image plane side is convex toward the image plane side near an optical axis thereof. The second lens and the third lens have a specific focal length. The second lens and the fifth lens have a specific Abbe's number.Type: GrantFiled: June 1, 2020Date of Patent: August 29, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11668903Abstract: An imaging lens includes a first lens; a second lens; a third lens having negative refractive power; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape at a paraxial region thereof. The sixth lens is formed in a shape so that a surface thereof on the object side is convex at a paraxial region thereof. The fourth lens and the fifth lens have a specific composite focal length. The sixth lens and the seventh lens have a specific composite focal length.Type: GrantFiled: December 2, 2020Date of Patent: June 6, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11668904Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The sixth lens is formed in a shape so that a surface thereof on the image plane side is concave at a paraxial region thereof. The seventh lens is formed in a shape so that a surface thereof on the image plane side is aspheric. The first lens and the second lens have a specific composite focal length. The third lens have a specific focal length. The fourth lens and the fifth lens have a specific composite focal length. The sixth lens and the seventh lens have a specific composite focal length.Type: GrantFiled: December 2, 2020Date of Patent: June 6, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11644640Abstract: An imaging lens includes a first lens having negative refractive power; an aperture stop; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The fifth lens is formed in a shape so that a surface thereof on the image plane side is concave at a paraxial region thereof. The fifth lens is formed in the shape so that the surface thereof on the image plane side has an aspheric shape having an inflection point. The first lens has a specific Abbe's number ?1. The first lens is disposed away from the second lens by a specific distance. The fifth lens is disposed away from the sixth lens by a specific distance.Type: GrantFiled: September 15, 2020Date of Patent: May 9, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11561373Abstract: An imaging lens includes a first lens; a second lens having positive refractive power; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side with spaces in between each of the lenses. The second lens is formed in a shape of a meniscus lens near an optical axis thereof. The third lens has at least one aspheric surface. The fourth lens has at least one aspheric surface. The fifth lens is formed in a shape so that a surface thereof on the object side is convex toward the object side near an optical axis thereof. The sixth lens has two aspheric surfaces and the surface on the image plane side is convex toward the image plane side near an optical axis thereof. The second lens has a specific Abbe's number.Type: GrantFiled: May 28, 2020Date of Patent: January 24, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11474327Abstract: An imaging lens includes a first lens having negative refractive power; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens is formed in a shape so that a surface thereof on the image side has an aspheric shape. The fourth lens is formed in a shape so that a surface thereof on the image plane side has an aspheric shape. The fifth lens is formed in a shape so that a surface thereof on the image plane side is concave at a paraxial region thereof, and has an aspheric shape having an inflection point. The sixth lens has a specific Abbe's number ?6. The first lens and the fifth lens are disposed away from the second lens and the sixth lens, respectively, by specific distances.Type: GrantFiled: September 15, 2020Date of Patent: October 18, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11442247Abstract: An imaging lens includes a first lens having negative refractive power; an aperture stop; a second lens; a third lens; a fourth lens having negative refractive power; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The fifth lens is formed in a shape so that a surface thereof on the object side is convex at a paraxial region thereof. The sixth lens is formed in a meniscus shape at a paraxial region thereof. The first lens and the sixth lens have specific Abbe's numbers.Type: GrantFiled: September 11, 2020Date of Patent: September 13, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11442249Abstract: An imaging lens includes a first lens having negative refractive power; an aperture stop; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The fourth lens is formed in a shape so that a surface thereof on the image plane side is convex at a paraxial region thereof and has an aspheric shape having an inflection point. The fifth lens is formed in a shape so that a surface thereof on the image plane side is concave at a paraxial region thereof.Type: GrantFiled: September 15, 2020Date of Patent: September 13, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11442250Abstract: An imaging lens includes a first lens group having positive refractive power; a second lens group; and a third lens group having negative refractive power, arranged in this order from an object side to an image plane side. The first lens group includes a first lens, a second lens, and a third lens. The second lens group includes a fourth lens and a fifth lens. The third lens group includes a sixth lens and a seventh lens having negative refractive power. The first lens is formed in a meniscus shape at a paraxial region thereof. The fourth lens is formed in a meniscus shape at a paraxial region thereof. The seventh lens is formed in a meniscus shape at a paraxial region thereof. The seventh lens has a specific focal length. The second lens is disposed away from the third lens by a specific distance.Type: GrantFiled: August 27, 2020Date of Patent: September 13, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11442248Abstract: An imaging lens includes a first lens having negative refractive power; an aperture stop; a second lens; a third lens; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The fourth lens is formed in a meniscus shape at a paraxial region thereof. The fifth lens is formed in a shape so that a surface thereof on the object side is convex at a paraxial region thereof. The sixth lens is formed in a meniscus shape at a paraxial region thereof. The first lens and the sixth lens have specific Abbe's numbers.Type: GrantFiled: September 11, 2020Date of Patent: September 13, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 11428900Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape at a paraxial region thereof. The third lens is formed in a shape so that a surface thereof directing to the image plane side is concave at a paraxial region thereof. The fourth lens is formed in a meniscus shape at a paraxial region thereof. The seventh lens has a specific focal length.Type: GrantFiled: August 27, 2020Date of Patent: August 30, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11300762Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having negative refractive power; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof.Type: GrantFiled: September 18, 2019Date of Patent: April 12, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTDInventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11175477Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens having negative refractive power; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a meniscus shape so that a surface thereof directing to the object side is convex near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof.Type: GrantFiled: September 18, 2019Date of Patent: November 16, 2021Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11150443Abstract: An imaging lens includes a stop; a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having positive refractive power; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side. The first lens is formed in a meniscus shape near an optical axis thereof. The third lens is formed in a shape so that a surface thereof directing to the image plane side is concave near an optical axis thereof. The sixth lens is formed in a meniscus shape near an optical axis thereof.Type: GrantFiled: September 18, 2019Date of Patent: October 19, 2021Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11099356Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side with a space between each of the lenses. The second lens is formed in a shape so that a surface thereof on the object side has a positive curvature radius. The third lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The sixth lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The seventh lens has a specific Abbe's number. The fourth lens and the fifth lens have a specific composite focal length. The sixth lens and the seventh lens have a specific composite focal length.Type: GrantFiled: June 20, 2019Date of Patent: August 24, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11092777Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens having positive refractive power; a sixth lens having negative refractive power; and a seventh lens, arranged in this order from an object side to an image plane side with a space between each of the lenses. The second lens is formed in a shape so that a surface thereof on the object side has a positive curvature radius. The third lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The seventh lens has a specific Abbe's number. The sixth lens and the seventh lens have a specific composite focal length.Type: GrantFiled: June 19, 2019Date of Patent: August 17, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11086102Abstract: An imaging lens includes a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side with a space between each of the lenses. The second lens is formed in a shape so that a surface thereof on the object side has a positive curvature radius. The third lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The sixth lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The seventh lens has a specific Abbe's number. The sixth lens and the seventh lens have a specific composite focal length.Type: GrantFiled: June 19, 2019Date of Patent: August 10, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa
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Patent number: 11022780Abstract: An imaging lens includes a first lens having positive refractive power; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; and a seventh lens, arranged in this order from an object side to an image plane side with a space between each of the lenses. The third lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The sixth lens is formed in a shape so that a surface thereof on the image plane side has a positive curvature radius. The seventh lens has a specific Abbe's number. The sixth lens has a specific focal length. The seventh lens has a specific focal length.Type: GrantFiled: June 20, 2019Date of Patent: June 1, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Tomohiro Yonezawa