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: 10802251Abstract: A photographing optical lens assembly includes, in order from an object side to an image side along an optical axis, 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. The third lens element has an object-side surface being convex in a paraxial region thereof.Type: GrantFiled: December 27, 2016Date of Patent: October 13, 2020Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Hsin-Hsuan Huang, Shu-Yun Yang
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Publication number: 20200285030Abstract: 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: ApplicationFiled: May 21, 2020Publication date: September 10, 2020Applicant: 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: 20200285031Abstract: 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: ApplicationFiled: May 23, 2020Publication date: September 10, 2020Applicant: LARGAN PRECISION CO.,LTD.Inventors: Cheng-Chen LIN, Po-Lun HSU, Wei-Yu CHEN
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Publication number: 20200249434Abstract: 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: March 8, 2019Publication date: August 6, 2020Applicant: LARGAN PRECISION CO.,LTD.Inventors: Cheng-Chen LIN, Yu-Tai TSENG, Tzu-Chieh KUO
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Patent number: 10705320Abstract: 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: April 17, 2018Date of Patent: July 7, 2020Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Po-Lun Hsu, Wei-Yu Chen
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Patent number: 10690886Abstract: 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: November 17, 2017Date of Patent: June 23, 2020Assignee: 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: 20200110275Abstract: 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: December 10, 2019Publication date: April 9, 2020Inventors: Hsiang-Chi TANG, Cheng-Chen LIN, Ming-Ta CHOU
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Patent number: 10613297Abstract: An image capturing assembly 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 positive refractive power. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element has an image-side surface being concave. The sixth lens element has an image-side surface being concave, wherein the image-side surface of the sixth lens element includes at least one inflection point.Type: GrantFiled: August 15, 2017Date of Patent: April 7, 2020Assignee: LARGAN PRECISION CO., LTD.Inventors: Tung-Yi Hsieh, Cheng-Chen Lin, Chun-Che Hsueh, Chun-Yen Chen, Hsin-Hsuan Huang
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Publication number: 20200049958Abstract: 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: October 22, 2019Publication date: February 13, 2020Applicant: LARGAN PRECISION CO.,LTD.Inventors: Cheng-Chen LIN, Wei-Yu CHEN
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Patent number: 10539804Abstract: 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: March 15, 2018Date of Patent: January 21, 2020Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Cheng-Chen Lin, Ming-Ta Chou
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Patent number: 10520705Abstract: An imaging 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. The sixth lens element has an image-side surface being concave in a paraxial region thereof. The image-side surface of the sixth lens element has at least one inflection point.Type: GrantFiled: January 3, 2018Date of Patent: December 31, 2019Assignee: LARGAN Precision Co., Ltd.Inventors: Hsiang-Chi Tang, Cheng-Chen Lin, Chun-Yen Chen, Hsin-Hsuan Huang
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Publication number: 20190377161Abstract: 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: ApplicationFiled: March 12, 2019Publication date: December 12, 2019Inventors: Cheng-Chen LIN, Chun-Yen CHEN, Yu-Tai TSENG, Kuan-Ting YEH, Wei-Yu CHEN
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Patent number: 10488625Abstract: 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: January 3, 2018Date of Patent: November 26, 2019Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Wei-Yu Chen
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Patent number: 10437017Abstract: A photographing optical 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 and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The fourth lens element with negative refractive power has an object-side surface being convex and an image-side surface being concave in a paraxial region thereof, wherein, either the object-side surface thereof, the image-side surface thereof or both the two surfaces thereof have at least one critical point in an off-axial region thereof, and either the object-side surface thereof, the image-side surface thereof or both the two surfaces thereof are aspheric.Type: GrantFiled: February 22, 2017Date of Patent: October 8, 2019Assignee: LARGAN Precision Co., Ltd.Inventors: Cheng-Chen Lin, Hung-Shuo Chen, Tzu-Chieh Kuo
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Publication number: 20190250380Abstract: 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: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Inventors: Cheng-Chen LIN, Chun-Yen CHEN, Yu-Tai TSENG, Kuan-Ting YEH, Hsin-Hsuan HUANG
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Publication number: 20190235213Abstract: An optical 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 and a sixth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The third lens element has negative refractive power. The fourth lens element has an object-side surface and an image-side surface being aspheric. The fifth lens element has an object-side surface and an image-side surface being aspheric. The sixth lens element has an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the sixth lens element includes at least one inflection point.Type: ApplicationFiled: April 10, 2019Publication date: August 1, 2019Inventors: Cheng-Chen Lin, Hsin-Hsuan Huang
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Publication number: 20190227278Abstract: 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: ApplicationFiled: July 26, 2018Publication date: July 25, 2019Applicant: LARGAN PRECISION CO.,LTD.Inventors: Chun-Yen CHEN, Cheng-Chen LIN, Hsin-Hsuan HUANG
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Patent number: 10317646Abstract: 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: August 10, 2017Date of Patent: June 11, 2019Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Chun-Yen Chen, Yu-Tai Tseng, Kuan-Ting Yeh, Hsin-Hsuan Huang
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Patent number: 10310228Abstract: An optical lens 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 lens element has refractive power. The third lens element has positive refractive power. 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 and including one convex shape in an off-axis region thereof. The sixth lens element with refractive power has an image-side surface being concave in a paraxial region thereof and including one convex shape in an off-axis region thereof.Type: GrantFiled: September 11, 2017Date of Patent: June 4, 2019Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Wei-Yu Chen
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Patent number: 10310223Abstract: An optical 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 and a sixth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The third lens element has negative refractive power. The fourth lens element has an object-side surface and an image-side surface being aspheric. The fifth lens element has an object-side surface and an image-side surface being aspheric. The sixth lens element has an object-side surface and an image-side surface being aspheric, wherein at least one of the object-side surface and the image-side surface of the sixth lens element includes at least one inflection point.Type: GrantFiled: July 15, 2016Date of Patent: June 4, 2019Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Hsin-Hsuan Huang