Patents by Inventor Kuan-Ting Yeh
Kuan-Ting Yeh 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: 11971609Abstract: A photographing optical system 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 eight lens elements each have 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 fifth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof. At least one lens surface of at least one lens element of the photographing optical system has at least one critical point in an off-axis region thereof.Type: GrantFiled: March 15, 2022Date of Patent: April 30, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Yen Chen, Kuan-Ting Yeh, Tzu-Chieh Kuo
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Patent number: 11966031Abstract: An image lens assembly includes, in order from an object side to an image side along an optical path, a first lens group, a second lens group, a third lens group and a fourth lens group. A total number of lens elements in the image lens assembly is seven. The first lens group includes a first lens element with positive refractive power and a second lens element with negative refractive power. Each of the second lens group and the third lens group includes at least one lens element. The fourth lens group includes a seventh lens element. When the image lens assembly is focusing or zooming, a relative position between the first lens group and an image surface is fixed, a relative position between the fourth lens group and the image surface is fixed, and the second lens group and the third lens group move along the optical axis.Type: GrantFiled: November 2, 2021Date of Patent: April 23, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting Yeh, Wei-Yu Chen
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Publication number: 20240126045Abstract: An imaging system 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 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. The second lens element has positive refractive power. The object-side surface of the third lens element is convex in a paraxial region thereof.Type: ApplicationFiled: November 25, 2022Publication date: April 18, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting YEH, Cheng-Yu TSAI
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Publication number: 20240118522Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. 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, and an image-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, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.Type: ApplicationFiled: December 7, 2023Publication date: April 11, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Po-Lun HSU, Wei-Yu CHEN, Kuan-Ting YEH, Ssu-Hsin LIU
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Patent number: 11940597Abstract: An image capturing optical lens system includes four 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 and a fourth lens element. The first lens element has an object-side surface being convex in a paraxial region thereof. The third 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 fourth lens element has negative refractive power.Type: GrantFiled: July 15, 2021Date of Patent: March 26, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting Yeh, Wei-Yu Chen
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Patent number: 11920244Abstract: The application discloses examples of a device housing of an electronic device including a magnesium-alloy substrate. The device housing further including a treatment layer applied over the magnesium-alloy substrate and a metallic coating layer applied over the treatment layer to provide a metallic luster. Further, a paint coating layer is disposed over a first portion of the metallic coating layer. Further, a top coating layer is applied over the paint coating layer and a visible second portion of the metallic coating layer.Type: GrantFiled: July 24, 2018Date of Patent: March 5, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Chi-Hao Chang, Ya-Ting Yeh, Kuan-Ting Wu, Chih-Hsiung Liao
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Patent number: 11885940Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. 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, and an image-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, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.Type: GrantFiled: April 14, 2022Date of Patent: January 30, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Wei-Yu Chen, Kuan-Ting Yeh, Ssu-Hsin Liu
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Publication number: 20240004162Abstract: An imaging system lens assembly 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 positive refractive power. The image-side surface of the fifth lens element is convex in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one inflection point.Type: ApplicationFiled: August 30, 2022Publication date: January 4, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu Jui LIN, Kuan-Ting YEH, I-Hsuan CHEN, Hsin-Hsuan HUANG
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Publication number: 20230408795Abstract: An imaging lens assembly includes, in order from an object side to an image side along an optical path: a first lens element through an eighth 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 second lens element has an object-side surface being convex in a paraxial region thereof. The fifth lens element has positive refractive power. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The seventh lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The eighth lens element has negative refractive power. At least one lens surface of the imaging lens assembly has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: August 23, 2022Publication date: December 21, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Pin-Yen CHU, Kuan-Ting YEH, Chun-Yen CHEN, Tzu-Chieh KUO
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Publication number: 20230258912Abstract: A photographing lens system includes, in order from an object side to an image side along an optical path, a front lens group and a rear lens group. The front lens group includes four lens elements. The rear lens group includes four lens elements. A second lens element counted from the image side in the front lens group has negative refractive power. An image-side surface of a first lens element counted from the image side in the front lens group is convex in a paraxial region thereof. A second lens element counted from the object side in the rear lens group has negative refractive power. An object-side surface of a first lens element counted from the image side in the rear lens group is concave in a paraxial region thereof. At least one lens element in the rear lens group has at least one lens surface being aspheric.Type: ApplicationFiled: May 18, 2022Publication date: August 17, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting YEH, Tzu-Chieh KUO
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Publication number: 20230228973Abstract: An imaging optical system lens assembly includes six lens elements, which is, 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. The first lens element has negative refractive power, the object-side surface of the first lens element is concave in a paraxial region thereof, the image-side surface of the first lens element is convex in a paraxial region thereof. The second lens element has positive refractive power, the object-side surface of the second lens element is convex in a paraxial region thereof, the image-side surface of the second lens element is concave in a paraxial region thereof. The fifth lens element has positive refractive power.Type: ApplicationFiled: December 2, 2022Publication date: July 20, 2023Inventors: Kuan-Ting YEH, Meng-Kuan CHO, Cheng-Yu TSAI
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Publication number: 20230132957Abstract: An optical photographing 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 object-side surface of the sixth lens element is convex 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 photographing system has at least one inflection point.Type: ApplicationFiled: November 30, 2021Publication date: May 4, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Jin Sen WANG, Kuo-Jui WANG, Kuan-Ting YEH, 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: 20220382018Abstract: An imaging optical lens system includes eight 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, a seventh lens element and an eighth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The seventh lens element has an image-side surface being concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex critical point in an off-axis region thereof.Type: ApplicationFiled: October 20, 2021Publication date: December 1, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting YEH, Wei-Yu CHEN
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Patent number: 11480757Abstract: An imaging optical system includes three lens elements. The three lens elements, in order from an object side to an image side, are a first lens element having an object-side surface facing the object side and an image-side surface facing the image side, a second lens element having an object-side surface facing the object side and an image-side surface facing the image side, and a third lens element having an object-side surface facing the object side and an image-side surface facing the image side. The third lens element has positive refractive power, the imaging optical system has a total of three lens elements, and there are air gaps between paraxial regions of the first lens element, the second lens element and the third lens element.Type: GrantFiled: January 27, 2020Date of Patent: October 25, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ming Chen, Kuan-Ting Yeh, Tzu-Chieh Kuo
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Patent number: 11467376Abstract: An image capturing optical lens assembly includes three lens elements, the three lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element and a third lens element. Each of the three lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The second lens element has negative refractive power. The object-side surface of the third lens element is concave in a paraxial region thereof, and the image-side surface of the third lens element is convex in a paraxial region thereof. The image capturing optical lens assembly has a total of three lens elements.Type: GrantFiled: December 4, 2020Date of Patent: October 11, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Kuan-Ting Yeh, Tzu-Chieh Kuo
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Publication number: 20220244495Abstract: An image capturing optical lens system includes four 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 and a fourth lens element. The first lens element has an object-side surface being convex in a paraxial region thereof. The third 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 fourth lens element has negative refractive power.Type: ApplicationFiled: July 15, 2021Publication date: August 4, 2022Inventors: Kuan-Ting YEH, Wei-Yu CHEN
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Publication number: 20220244504Abstract: A photographing lens assembly includes, in order from an object side to an image side: a first, a second, a third, a fourth, a fifth and a sixth lens elements. The first lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof, wherein the object-side surface has at least one convex critical point in an off-axis region thereof. The third lens element has an image-side surface being convex in a paraxial region thereof. 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, and an image-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, wherein the image-side surface has at least one convex critical point in an off-axis region thereof.Type: ApplicationFiled: April 14, 2022Publication date: August 4, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Po-Lun HSU, Wei-Yu CHEN, Kuan-Ting YEH, Ssu-Hsin LIU
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Patent number: 11385440Abstract: An optical photographing lens assembly includes three lens elements which are, in order from an object side to an image side: a first lens element, a second lens element and a third lens element. Each of the three 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 inflection point, and the object-side surface of the first lens element has at least one critical point in an off-axis region thereof. The optical photographing lens assembly has a total of three lens elements.Type: GrantFiled: May 30, 2019Date of Patent: July 12, 2022Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Che Hsueh, Kuan-Ting Yeh, Tzu-Chieh Kuo
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Publication number: 20220214522Abstract: A photographing optical system 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 eight lens elements each have 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 fifth lens element has positive refractive power. The object-side surface of the seventh lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof. At least one lens surface of at least one lens element of the photographing optical system has at least one critical point in an off-axis region thereof.Type: ApplicationFiled: March 15, 2022Publication date: July 7, 2022Applicant: LARGAN PRECISION CO., LTD.Inventors: Chun-Yen CHEN, Kuan-Ting YEH, Tzu-Chieh KUO