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: 11016267Abstract: An imaging lens includes a first lens; 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 second lens has a convex surface facing the object side near an optical axis thereof. The fifth lens has a convex surface facing the image plane side near an optical axis thereof. The sixth lens has a convex surface facing the image plane side near an optical axis thereof. The first lens is arranged so that a surface thereof on the object side is away from an image plane by a specific distance on an optical axis thereof. The second lens is arranged to be away from the third lens by a specific distance on the optical axis thereof. The third lens has a specific Abbe's number.Type: GrantFiled: August 9, 2019Date of Patent: May 25, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 10996443Abstract: An imaging lens includes a first lens having positive refractive power; 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 first lens is formed in a meniscus shape to have an object side convex surface. The sixth lens is formed in a meniscus shape to have an object side concave surface. The second lens has a specific focal length. The third lens has a specific focal length. The sixth lens has a specific Abbe's number.Type: GrantFiled: January 18, 2019Date of Patent: May 4, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Publication number: 20210088750Abstract: 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: ApplicationFiled: December 3, 2020Publication date: March 25, 2021Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Tomohiro YONEZAWA
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Publication number: 20210088751Abstract: 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: ApplicationFiled: December 3, 2020Publication date: March 25, 2021Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Tomohiro Yonezawa
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Publication number: 20210080691Abstract: 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: ApplicationFiled: December 2, 2020Publication date: March 18, 2021Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Tomohiro Yonezawa
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Publication number: 20210080692Abstract: 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: ApplicationFiled: December 2, 2020Publication date: March 18, 2021Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Tomohiro YONEZAWA
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Patent number: 10948693Abstract: An imaging lens includes a first lens; a second lens; a third lens having positive refractive power; a fourth lens; a fifth lens; and a sixth lens, arranged in this order from an object side to an image plane side. The second lens has a convex surface facing the object side near an optical axis thereof. The sixth lens has a convex surface facing the image plane side near an optical axis thereof. The first lens is arranged so that a surface thereof on the object side is away from an image plane by a specific distance on an optical axis thereof. The second lens is arranged to be away from the third lens by a specific distance on the optical axis thereof. The fourth lens is arranged to be away from the fifth lens by a specific distance on an optical axis thereof.Type: GrantFiled: August 9, 2019Date of Patent: March 16, 2021Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 10935767Abstract: An imaging lens includes a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; 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 disposed to face the fifth lens. The fourth lens is formed in a shape so that a surface thereof on the image plane side is concave at a peripheral portion thereof. The fifth lens is formed in a shape so that a surface thereof on the object side is concave at a peripheral portion thereof.Type: GrantFiled: October 19, 2018Date of Patent: March 2, 2021Assignee: Kantatsu Co., Ltd.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Publication number: 20200409116Abstract: 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: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Hisao FUKAYA
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Publication number: 20200409115Abstract: 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: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Hisao FUKAYA
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Publication number: 20200409120Abstract: 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: ApplicationFiled: September 15, 2020Publication date: December 31, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Hisao FUKAYA
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Publication number: 20200409119Abstract: 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 object 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: ApplicationFiled: September 15, 2020Publication date: December 31, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Hisao FUKAYA
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Publication number: 20200409118Abstract: 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: ApplicationFiled: September 15, 2020Publication date: December 31, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Hisao FUKAYA
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Publication number: 20200393651Abstract: 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: ApplicationFiled: August 27, 2020Publication date: December 17, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Tomohiro YONEZAWA
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Publication number: 20200393650Abstract: 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: ApplicationFiled: August 27, 2020Publication date: December 17, 2020Inventors: Yoji KUBOTA, Kenichi KUBOTA, Hitoshi HIRANO, Tomohiro YONEZAWA
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Patent number: 10809501Abstract: An imaging lens includes a first lens group and a second lens group, 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 having negative refractive power. The second lens group includes a fourth lens having positive refractive power, a fifth lens, and a sixth lens. The first lens has a convex surface facing the image plane side near an optical axis thereof. The third lens has a concave surface facing the image plane side near an optical axis thereof. The fourth lens has a convex surface facing the image plane side near an optical axis thereof. The fourth lens has a specific Abbe's number.Type: GrantFiled: July 26, 2019Date of Patent: October 20, 2020Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 10809498Abstract: An imaging lens includes a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; 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 near an optical axis thereof.Type: GrantFiled: October 19, 2018Date of Patent: October 20, 2020Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 10809503Abstract: An imaging lens includes a first lens group having positive refractive power and a second lens group, 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 having positive refractive power, a fifth lens, and a sixth lens. The third lens has a concave surface facing the image plane side near an optical axis thereof. The fifth lens has a concave surface facing the image plane side near an optical axis thereof. The sixth lens has a concave surface facing the object side near an optical axis thereof. The second lens has a specific Abbe's number.Type: GrantFiled: July 30, 2019Date of Patent: October 20, 2020Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 10809500Abstract: An imaging lens includes a first lens group and a second lens group, 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, a fifth lens having negative refractive power, and a sixth lens. The third lens has a concave surface facing the image plane side near an optical axis thereof. The fourth lens has a convex surface facing the image plane side near an optical axis thereof. The sixth lens has a concave surface facing the object side near an optical axis thereof. The fourth lens has a specific Abbe's number. The fifth lens has a specific Abbe's number.Type: GrantFiled: June 26, 2019Date of Patent: October 20, 2020Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
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Patent number: 10809502Abstract: An imaging lens includes a first lens group and a second 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 having positive refractive power, a fifth lens, and a sixth lens. The second lens has a concave surface facing the object side near an optical axis thereof. The third lens has a concave surface facing the image plane side near an optical axis thereof. The sixth lens has a concave surface facing the object side near an optical axis thereof. The fourth lens has a specific Abbe's number.Type: GrantFiled: July 30, 2019Date of Patent: October 20, 2020Assignee: KANTATSU CO., LTD.Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya