Patents by Inventor Huang Yunbai
Huang Yunbai 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: 11947087Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of the wide field of view, the low-profileness and the low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens having a convex surface facing the object side and positive refractive power near an optical axis, a second lens having negative refractive power near the optical axis, a third lens having aspheric surfaces on both sides, a fourth lens, and a fifth lens having a concave surface facing the image side and the negative refractive power near the optical axis, wherein an image-side surface of said fifth lens is formed as an aspheric surface having at least one pole point in a position off the optical axis, and predetermined conditional expressions are satisfied.Type: GrantFiled: August 2, 2021Date of Patent: April 2, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Huang Yunbai
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Patent number: 11867878Abstract: 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 positive refractive power in a paraxial region, a fourth lens, a fifth lens with negative refractive power in a paraxial region, a sixth lens with positive refractive power having a convex object-side surface in a paraxial region, and a seventh lens with negative refractive power having a concave image-side surface in a paraxial region, and predetermined conditional expressions are satisfied.Type: GrantFiled: June 8, 2020Date of Patent: January 9, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Huang Yunbai
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Patent number: 11754807Abstract: 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 being formed in a meniscus shape having an object-side surface being convex in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens with positive refractive power having an object-side surface being concave in a paraxial region, and a fourth lens with negative refractive power having an image-side surface being concave in a paraxial region, and predetermined conditional expressions are satisfied.Type: GrantFiled: December 17, 2020Date of Patent: September 12, 2023Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Huang Yunbai
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Patent number: 11500177Abstract: 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 an object-side surface being convex in a paraxial region, a second lens with negative refractive power having an object-side surface being convex in a paraxial region, a third lens with negative refractive power in a paraxial region, a fourth lens, and a fifth lens having an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.Type: GrantFiled: June 8, 2020Date of Patent: November 15, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventors: Koki Tokuno, Huang Yunbai
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Publication number: 20220050269Abstract: 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 being formed in a meniscus shape having an object-side surface being convex in a paraxial region, a second lens with negative refractive power in a paraxial region, a third lens with positive refractive power having an object-side surface being concave in a paraxial region, and a fourth lens with negative refractive power having an image-side surface being concave in a paraxial region, and predetermined conditional expressions are satisfied.Type: ApplicationFiled: December 17, 2020Publication date: February 17, 2022Inventor: Huang Yunbai
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Patent number: 11243380Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of the wide field of view, the low-profileness and the low F-number. An imaging lens comprises, in order from an object side to an image side, a first lens having a convex surface facing the object side and positive refractive power near an optical axis, a second lens having negative refractive power near the optical axis, a third lens having aspheric surfaces on both sides, a fourth lens, and a fifth lens having a concave surface facing the image side and the negative refractive power near the optical axis, wherein an image-side surface of said fifth lens is formed as an aspheric surface having at least one pole point in a position off the optical axis, and predetermined conditional expressions are satisfied.Type: GrantFiled: July 29, 2019Date of Patent: February 8, 2022Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Huang Yunbai
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Publication number: 20210373295Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of the wide field of view, the low-profileness and the low F-number.Type: ApplicationFiled: August 2, 2021Publication date: December 2, 2021Inventor: Huang Yunbai
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Publication number: 20210356718Abstract: 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 positive refractive power in a paraxial region, a fourth lens, a fifth lens with negative refractive power in a paraxial region, a sixth lens with positive refractive power having a convex object-side surface in a paraxial region, and a seventh lens with negative refractive power having a concave image-side surface in a paraxial region, and predetermined conditional expressions are satisfied.Type: ApplicationFiled: August 2, 2021Publication date: November 18, 2021Inventor: Huang YUNBAI
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Patent number: 11131835Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of the wide field of view, the low-profileness and the 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 surface facing the object side near an optical axis, a second lens having negative refractive power near the optical axis, a third lens, a fourth lens, and a fifth lens with the negative refractive power having a concave surface facing the image side near the optical axis, wherein an image-side surface of the fifth lens is formed as an aspheric surface having at least one pole point in a position off the optical axis, and predetermined conditional expressions are satisfied.Type: GrantFiled: June 18, 2019Date of Patent: September 28, 2021Inventor: Huang Yunbai
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Publication number: 20210157099Abstract: 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 an object-side surface being convex in a paraxial region, a second lens with negative refractive power having an object-side surface being convex in a paraxial region, a third lens with negative refractive power in a paraxial region, a fourth lens, and a fifth lens having an image-side surface being convex in a paraxial region, and predetermined conditional expressions are satisfied.Type: ApplicationFiled: June 8, 2020Publication date: May 27, 2021Inventors: Koki TOKUNO, Huang YUNBAI
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Publication number: 20210157101Abstract: 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 positive refractive power in a paraxial region, a fourth lens, a fifth lens with negative refractive power in a paraxial region, a sixth lens with positive refractive power having a convex object-side surface in a paraxial region, and a seventh lens with negative refractive power having a concave image-side surface in a paraxial region, and predetermined conditional expressions are satisfied.Type: ApplicationFiled: June 8, 2020Publication date: May 27, 2021Inventor: Huang YUNBAI
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Publication number: 20200233179Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of the wide field of view, the low-profileness and the 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 surface facing the object side near an optical axis, a second lens having negative refractive power near the optical axis, a third lens, a fourth lens, and a fifth lens with the negative refractive power having a concave surface facing the image side near the optical axis, wherein an image-side surface of the fifth lens is formed as an aspheric surface having at least one pole point in a position off the optical axis, and predetermined conditional expressions are satisfied.Type: ApplicationFiled: June 18, 2019Publication date: July 23, 2020Inventor: Huang YUNBAI
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Publication number: 20200225448Abstract: There is provided an imaging lens with excellent optical characteristics which satisfies demand of the wide field of view, the low-profileness and the low F-number.Type: ApplicationFiled: July 29, 2019Publication date: July 16, 2020Inventor: Huang Yunbai