Patents by Inventor Yu-Tai TSENG
Yu-Tai TSENG 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: 11977274Abstract: 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: November 2, 2022Date of Patent: May 7, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Yu-Tai Tseng, Tzu-Chieh Kuo
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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: 11953657Abstract: A photographing optical lens assembly 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. Each of the eight lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element has positive refractive power. The object-side surface of the fifth lens element is concave in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof. 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.Type: GrantFiled: November 4, 2022Date of Patent: April 9, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai Tseng, Tzu-Chieh Kuo
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Publication number: 20240061212Abstract: A photographing lens assembly includes five lens elements, 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. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has an object-side surface being concave in a paraxial region. The third lens element has an object-side surface being convex in a paraxial region. The fourth lens element has an object-side surface being concave in a paraxial region, wherein two surfaces thereof are both aspheric. The fifth lens element has an object-side surface and an image-side surface being both aspheric. At least one surface of the lens elements has at least one inflection point.Type: ApplicationFiled: October 31, 2023Publication date: February 22, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai TSENG, Tung-Yi HSIEH, Hsin-Hsuan HUANG
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Publication number: 20240012223Abstract: A photographing optical 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 has negative refractive power. When specific conditions are satisfied, the requirements of compact size and high image quality can be met by the photographing optical lens assembly, simultaneously.Type: ApplicationFiled: August 31, 2022Publication date: January 11, 2024Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu Jui LIN, Yu-Tai TSENG, Wei-Xiang FU, Cheng-Yu TSAI, Hsin-Hsuan HUANG
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Patent number: 11846830Abstract: A photographing lens assembly includes five lens elements, 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. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has an object-side surface being concave in a paraxial region. The third lens element has an object-side surface being convex in a paraxial region. The fourth lens element has an object-side surface being concave in a paraxial region, wherein two surfaces thereof are both aspheric. The fifth lens element has an object-side surface and an image-side surface being both aspheric. At least one surface of the lens elements has at least one inflection point.Type: GrantFiled: April 5, 2022Date of Patent: December 19, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai Tseng, Tung-Yi Hsieh, Hsin-Hsuan Huang
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Publication number: 20230393373Abstract: 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: August 22, 2023Publication date: December 7, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen LIN, Yu-Tai TSENG, Wei-Yu CHEN
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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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Publication number: 20230333347Abstract: A photographing optical 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. 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 image-side surface of the second lens element is concave in a paraxial region thereof. The third lens element has negative refractive power. The fourth lens element has positive refractive power. The object-side surface of the fifth lens element is convex in a paraxial region thereof, the image-side surface of the fifth lens element is concave in a paraxial region thereof, and the image-side surface of the fifth lens element has at least one inflection point.Type: ApplicationFiled: June 30, 2022Publication date: October 19, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai TSENG, Meng-Kuan CHO, I-Hsuan CHEN
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Publication number: 20230314774Abstract: An optical lens assembly includes seven lens elements which are, in order from object side to image side: first lens element, second lens element, third lens element, fourth lens element, fifth lens element, sixth lens element and seventh lens element. The first lens element has object-side surface having at least one convex shape in off-axis region thereof. The second lens element with positive refractive power has object-side surface being convex in paraxial region thereof. The third lens element has image-side surface being convex in paraxial region thereof. The sixth lens element with positive refractive power has object-side surface being convex in paraxial region thereof. The seventh lens element has image-side surface being concave in paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex critical point in off-axis region thereof. The optical lens assembly has a total of seven lens elements.Type: ApplicationFiled: June 6, 2023Publication date: October 5, 2023Applicant: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai TSENG, Chun-Che HSUEH, Hung-Shuo CHEN, Wei-Yu CHEN
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Patent number: 11774714Abstract: 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: GrantFiled: July 29, 2021Date of Patent: October 3, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Yu-Tai Tseng, Wei-Yu Chen
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Patent number: 11709345Abstract: An optical lens assembly includes seven lens elements which are, in order from object side to image side: first lens element, second lens element, third lens element, fourth lens element, fifth lens element, sixth lens element and seventh lens element. The first lens element has object-side surface having at least one convex shape in off-axis region thereof. The second lens element with positive refractive power has object-side surface being convex in paraxial region thereof. The third lens element has image-side surface being convex in paraxial region thereof. The sixth lens element with positive refractive power has object-side surface being convex in paraxial region thereof. The seventh lens element has image-side surface being concave in paraxial region thereof, and the image-side surface of the seventh lens element has at least one convex critical point in off-axis region thereof. The optical lens assembly has a total of seven lens elements.Type: GrantFiled: August 16, 2021Date of Patent: July 25, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Yu-Tai Tseng, Chun-Che Hsueh, Hung-Shuo Chen, Wei-Yu Chen
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Publication number: 20230204927Abstract: An optical photographing 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 has an image-side surface being convex in a paraxial region thereof. The third lens element has positive refractive power. The fourth lens element has an object-side surface being concave in a paraxial region thereof. The fifth lens element with positive refractive power has two surfaces being both aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the surfaces of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one convex shape in an off-axial region thereof.Type: ApplicationFiled: February 22, 2023Publication date: June 29, 2023Inventors: Chun-Che HSUEH, Yu-Tai TSENG, Hsin-Hsuan HUANG
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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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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: 11619804Abstract: An optical photographing 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 has an image-side surface being convex in a paraxial region thereof. The third lens element has positive refractive power. The fourth lens element has an object-side surface being concave in a paraxial region thereof. The fifth lens element with positive refractive power has two surfaces being both aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein the surfaces of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one convex shape in an off-axial region thereof.Type: GrantFiled: April 13, 2020Date of Patent: April 4, 2023Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Che Hsueh, Yu-Tai Tseng, Hsin-Hsuan Huang
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Publication number: 20230088080Abstract: A photographing optical lens assembly 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. Each of the eight lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element has positive refractive power. The object-side surface of the fifth lens element is concave in a paraxial region thereof. The image-side surface of the sixth lens element is concave in a paraxial region thereof. 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.Type: ApplicationFiled: November 4, 2022Publication date: March 23, 2023Inventors: 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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Publication number: 20230026033Abstract: An electronic device includes a display screen, a first aperture region and a second aperture region. The display screen is disposed on a surface of the electronic device. The first aperture region is disposed on the surface of the electronic device, and a visible light is able to enter into an internal portion of the electronic device through the first aperture region. The second aperture region is disposed on the surface of the electronic device, and the visible light is able to enter into the internal portion of the electronic device through the second aperture region. The display screen is disposed between the first aperture region and the second aperture region and configured to be a spacing maintained therebetween, and a shape of the first aperture region and a shape of the second aperture region are non-circular and mirror-symmetrical to each other.Type: ApplicationFiled: May 31, 2022Publication date: January 26, 2023Inventors: Yu-Tai TSENG, Lin-An CHANG, Ming-Ta CHOU, Hsiang-Chi TANG
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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