Patents by Inventor Yu-Chun KE
Yu-Chun KE 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: 20240134155Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: ApplicationFiled: October 9, 2023Publication date: April 25, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai TSENG, Yu-Chun KE, Kuo-Jui WANG, Tzu-Chieh KUO
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Patent number: 11822056Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: GrantFiled: December 13, 2022Date of Patent: November 21, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai Tseng, Yu-Chun Ke, Kuo-Jui Wang, Tzu-Chieh Kuo
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Patent number: 11719911Abstract: An imaging 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative 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, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.Type: GrantFiled: December 8, 2020Date of Patent: August 8, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu Jui Lin, Yu-Chun Ke, Jin Sen Wang, Wei-Yu Chen, Chun-Yen Chen
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Patent number: 11686922Abstract: An imaging 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative 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, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.Type: GrantFiled: June 10, 2020Date of Patent: June 27, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu Jui Lin, Yu-Chun Ke, Jin Sen Wang, Wei-Yu Chen
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Patent number: 11668898Abstract: An image lens assembly includes five 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth 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: September 14, 2020Date of Patent: June 6, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun Ke, Jin Sen Wang, Ssu-Hsin Liu, Wei-Yu Chen
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Publication number: 20230168470Abstract: An optical imaging system 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. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The seventh lens element has negative refractive power, and the object-side surface of the seventh lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the optical imaging system has at least one inflection point in an off-axis region thereof.Type: ApplicationFiled: December 23, 2021Publication date: June 1, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun KE, Hong Rong KUO, Tzu-Chieh KUO
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Publication number: 20230121687Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: ApplicationFiled: December 13, 2022Publication date: April 20, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai TSENG, Yu-Chun KE, Kuo-Jui WANG, Tzu-Chieh KUO
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Patent number: 11555986Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: GrantFiled: November 24, 2020Date of Patent: January 17, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai Tseng, Yu-Chun Ke, Kuo-Jui Wang, Tzu-Chieh Kuo
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Publication number: 20220404584Abstract: An optical imaging system includes six 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 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 negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: July 21, 2021Publication date: December 22, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Yi-Hsiang CHUANG, Kuan Chun WANG, Chun-Yen CHEN, Kuan-Ting YEH, Yu-Chun KE, Tzu-Chieh KUO
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Publication number: 20220035131Abstract: An image lens assembly includes five 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth 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: September 14, 2020Publication date: February 3, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun KE, Jin Sen WANG, Ssu-Hsin LIU, Wei-Yu CHEN
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Publication number: 20210255429Abstract: An imaging 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative 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, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: December 8, 2020Publication date: August 19, 2021Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu Jui LIN, Yu-Chun KE, Jin Sen WANG, Wei-Yu CHEN, Chun-Yen CHEN
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Publication number: 20210255428Abstract: An imaging 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 third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative 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, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: June 10, 2020Publication date: August 19, 2021Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu Jui LIN, Yu-Chun KE, Jin Sen WANG, Wei-Yu CHEN
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Patent number: 11092785Abstract: An optical imaging lens assembly includes five 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 and a fifth lens element. Each of the five 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 object-side surface of the first lens element is convex in a paraxial region thereof. The second lens element has negative refractive power. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The fifth lens element has negative refractive power. The image-side surface of the fifth lens element is concave in a paraxial region thereof and has at least one convex critical point in an off-axis region thereof.Type: GrantFiled: July 5, 2019Date of Patent: August 17, 2021Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Chun Ke, Tzu-Chieh Kuo
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Publication number: 20210080695Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: ApplicationFiled: November 24, 2020Publication date: March 18, 2021Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai TSENG, Yu-Chun KE, Kuo-Jui WANG, Tzu-Chieh KUO
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Patent number: 10908391Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: GrantFiled: August 25, 2018Date of Patent: February 2, 2021Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai Tseng, Yu-Chun Ke, Kuo-Jui Wang, Tzu-Chieh Kuo
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Publication number: 20200363612Abstract: An optical imaging lens assembly includes five 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 and a fifth lens element. Each of the five 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 object-side surface of the first lens element is convex in a paraxial region thereof. The second lens element has negative refractive power. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The fifth lens element has negative refractive power. The image-side surface of the fifth lens element is concave in a paraxial region thereof and has at least one convex critical point in an off-axis region thereof.Type: ApplicationFiled: July 5, 2019Publication date: November 19, 2020Applicant: LARGAN PRECISION CO.,LTD.Inventors: Yu-Chun KE, Tzu-Chieh KUO
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Publication number: 20200018930Abstract: An imaging optical lens assembly includes four 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 and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.Type: ApplicationFiled: August 25, 2018Publication date: January 16, 2020Applicant: LARGAN PRECISION CO.,LTD.Inventors: Yu-Tai TSENG, Yu-Chun KE, Kuo-Jui WANG, Tzu-Chieh KUO