Patents by Inventor Cheng-Chen Lin
Cheng-Chen Lin 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: 11740439Abstract: A photographing lens assembly includes six lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The second lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one inflection point.Type: GrantFiled: July 12, 2021Date of Patent: August 29, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Yen Chen, Cheng-Chen Lin, Hsin-Hsuan Huang
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Publication number: 20230251499Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.Type: ApplicationFiled: April 19, 2023Publication date: August 10, 2023Inventors: Hsiang-Chi TANG, Cheng-Chen LIN, Ming-Ta CHOU
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Patent number: 11662596Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.Type: GrantFiled: February 16, 2022Date of Patent: May 30, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Cheng-Chen Lin, Ming-Ta Chou
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Publication number: 20230140099Abstract: An image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second and third lens elements have refractive power. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The sixth lens element with refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The image capturing lens assembly has a total of six lens elements with refractive power.Type: ApplicationFiled: December 29, 2022Publication date: May 4, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen LIN, Wei-Yu CHEN
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Publication number: 20230130683Abstract: An optical photographing lens assembly includes seven lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements of the optical photographing lens assembly has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: November 2, 2022Publication date: April 27, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen LIN, Yu-Tai TSENG, Tzu-Chieh KUO
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Patent number: 11586018Abstract: An imaging lens assembly includes, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The image-side surface of the seventh lens element has at least one convex shape in an off-axis region thereof. An object-side surface and the image-side surface of the seventh lens element are aspheric. At least one of an image-side surface of the fourth lens element and an image-side surface of the fifth lens element has at least one inflection point.Type: GrantFiled: May 21, 2020Date of Patent: February 21, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Cheng-Chen Lin, Chun-Yen Chen, Yu-Tai Tseng, Wei-Yu Chen
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Patent number: 11573407Abstract: An image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The second and third lens elements have refractive power. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The sixth lens element with refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The image capturing lens assembly has a total of six lens elements with refractive power.Type: GrantFiled: February 8, 2021Date of Patent: February 7, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Wei-Yu Chen
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Publication number: 20230003980Abstract: A photographing optical lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an object-side surface being convex in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.Type: ApplicationFiled: August 23, 2022Publication date: January 5, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Kuo-Jui WANG, Cheng-Chen LIN, Wei-Yu CHEN
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Patent number: 11525981Abstract: An optical photographing lens assembly includes seven lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Each of the seven lens elements of the optical photographing lens assembly has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one critical point in an off-axis region thereof.Type: GrantFiled: December 10, 2020Date of Patent: December 13, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Yu-Tai Tseng, Tzu-Chieh Kuo
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Patent number: 11487089Abstract: An image capturing optical lens assembly includes five lens elements, in order from an object side to an image side along an optical path, being a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The fourth lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. At least one of surfaces of the fifth lens element includes at least one critical point in an off-axis region thereof.Type: GrantFiled: August 13, 2020Date of Patent: November 1, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Kuan-Chun Wang, Tzu-Chieh Kuo
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Patent number: 11460678Abstract: A photographing optical lens assembly includes seven lens elements, which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element has an object-side surface being convex in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.Type: GrantFiled: April 2, 2020Date of Patent: October 4, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuo-Jui Wang, Cheng-Chen Lin, Wei-Yu Chen
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Publication number: 20220171205Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.Type: ApplicationFiled: February 16, 2022Publication date: June 2, 2022Inventors: Hsiang-Chi TANG, Cheng-Chen LIN, Ming-Ta CHOU
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Patent number: 11287662Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.Type: GrantFiled: January 21, 2021Date of Patent: March 29, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Cheng-Chen Lin, Ming-Ta Chou
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Patent number: 11262554Abstract: A lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has a concave image-side surface in a paraxial region. The second lens element with refractive power has a convex object-side surface in a paraxial region. The third lens element has positive refractive power. The fourth lens element with positive refractive power has an object-side and an image-side surfaces being aspheric. The fifth lens element with negative refractive power has an aspheric concave object-side surface and an aspheric convex image-side surface in a paraxial region. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region with a convex shape in an off-axis region.Type: GrantFiled: May 23, 2020Date of Patent: March 1, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Po-Lun Hsu, Wei-Yu Chen
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Patent number: 11256105Abstract: An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.Type: GrantFiled: August 18, 2020Date of Patent: February 22, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Cheng-Chen Lin, Ming-Ta Chou
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Patent number: 11249282Abstract: A photographing optical lens assembly includes seven lens elements, the seven lens elements are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element has positive refractive power, the fifth lens element with negative refractive power has image-side surface being concave in a paraxial region thereof, the sixth lens element has an image-side surface being convex in a paraxial region thereof, and the seventh lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the seventh lens element includes at least one convex critical point in an off-axis region thereof.Type: GrantFiled: March 12, 2019Date of Patent: February 15, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Chun-Yen Chen, Yu-Tai Tseng, Kuan-Ting Yeh, Wei-Yu Chen
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Patent number: 11226472Abstract: An optical imaging module includes six lens elements, the six lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has an image-side surface being concave. The third lens element has an image-side surface being convex. The fourth lens element has positive refractive power. The fifth lens element with negative refractive power has an object-side surface being concave and an image-side surface being convex. The sixth lens element has an image-side surface being concave, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one inflection point.Type: GrantFiled: April 25, 2019Date of Patent: January 18, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Chun-Yen Chen, Yu-Tai Tseng, Kuan-Ting Yeh, Hsin-Hsuan Huang
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Publication number: 20220011651Abstract: An imaging lens assembly module has an optical axis, and includes a lens barrel and an optical element set. The lens barrel includes an object-side portion, a tubular portion and a tip-end minimal aperture. The object-side portion includes a first assembling surface. The tubular portion includes a plurality of second assembling surfaces. The optical element set includes at least one light blocking sheet and at least one optical lens element. The light blocking sheet includes an object-side surface, an image-side surface and an inner opening surface. The optical lens element includes an optical effective portion and a peripheral portion. The object-side portion of the lens barrel includes a first reversing inclined surface gradually enlarged from the tip-end minimal aperture to the image side of the lens barrel, and the first reversing inclined surface is not contacted with the optical element set.Type: ApplicationFiled: September 28, 2021Publication date: January 13, 2022Inventors: Kuan-Ming CHEN, Hsiang-Chi TANG, Lin-An CHANG, Cheng-Chen LIN, Ming-Ta CHOU
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Patent number: 11215798Abstract: A photographing optical lens system includes six lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The second lens element has negative refractive power. The sixth lens element has negative refractive power. At least one lens surface of at least one lens element of the photographing optical lens system has at least one critical point in an off-axis region thereof.Type: GrantFiled: November 4, 2019Date of Patent: January 4, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Yu Jui Lin, Tzu-Chieh Kuo
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Publication number: 20210356699Abstract: A photographing lens assembly includes eight lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The sixth lens element has an image-side surface being concave in a paraxial region thereof. The seventh lens element has an image-side surface being concave in a paraxial region thereof. The eighth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the eighth lens element has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: July 29, 2021Publication date: November 18, 2021Applicant: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen LIN, Yu-Tai TSENG, Wei-Yu CHEN