Patents by Inventor Po Lun Hsu
Po Lun Hsu 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: 20170168266Abstract: An imaging lens assembly, including, in order from an object side to an image side: a first lens element having negative refractive power; a second lens element with positive refractive power having an image-side surface being convex; a third lens element, a fourth lens element with positive refractive power having an object-side surface being concave and an image-side surface being convex; a fifth lens element with negative refractive power having an image-side surface being concave, at least one convex shape on the image-side surface in an off-axial region, and both of object-side and image-side surfaces thereof being aspheric; wherein the imaging lens assembly has a total of five lens elements.Type: ApplicationFiled: March 30, 2016Publication date: June 15, 2017Inventors: PO-LUN HSU, WEI-YU CHEN
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Publication number: 20170090156Abstract: An imaging optical 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 positive refractive power has an object-side surface being convex in a paraxial region thereof. The third lens element has an image-side surface being concave in a paraxial region thereof. The fourth lens element has an image-side surface being concave 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, wherein the image-side surface of the sixth lens element includes at least one convex shape in an off-axial region thereof.Type: ApplicationFiled: November 4, 2015Publication date: March 30, 2017Inventors: Po-Lun Hsu, Cheng-Chen Lin, Wei-Yu Chen
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Patent number: 9606327Abstract: 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: June 15, 2015Date of Patent: March 28, 2017Assignee: LARGAN PRECISION CO., LTD.Inventors: Cheng-Chen Lin, Po-Lun Hsu, Wei-Yu Chen
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Publication number: 20160356994Abstract: A photographing 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 positive refractive power has a convex object-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point thereon. The sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point.Type: ApplicationFiled: August 19, 2016Publication date: December 8, 2016Inventors: Po-Lun HSU, Tsung-Han TSAI, Hsin-Hsuan HUANG
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Patent number: 9448385Abstract: A photographing 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 positive refractive power has a convex object-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point thereon. The sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point.Type: GrantFiled: August 3, 2015Date of Patent: September 20, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Tsung-Han Tsai, Hsin-Hsuan Huang
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Publication number: 20160252709Abstract: 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: June 15, 2015Publication date: September 1, 2016Inventors: Cheng-Chen LIN, Po-Lun HSU, Wei-Yu CHEN
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Patent number: 9417435Abstract: An optical 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 and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has negative refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The fifth lens element with refractive power has a concave image-side surface, wherein the fifth lens element has at least one inflection point formed on at least one surface thereof. Both of the object-side surface and the image-side surface of the fourth and fifth lens elements are aspheric. The optical image capturing lens assembly has a total of five lens elements with refractive power.Type: GrantFiled: October 20, 2015Date of Patent: August 16, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Chun-Shan Chen, Dung-Yi Hsieh, Tsung-Han Tsai, Hsin-Hsuan Huang
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Patent number: 9316819Abstract: This invention provides an imaging lens system, in order from an object side to an image side comprising: a first positive lens element having a convex object-side surface at a paraxial region and a convex image-side surface at the paraxial region; a plastic positive second lens element having a concave object-side surface at the paraxial region, a convex image-side surface at the paraxial region, and both of the object-side and image-side surfaces being aspheric; and a plastic negative third lens element having a concave object-side surface at the paraxial region, a concave at the paraxial region and convex at a peripheral region image-side surface, and both of the object-side and image-side surfaces being aspheric.Type: GrantFiled: November 15, 2012Date of Patent: April 19, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Wei-Yu Chen, Chun-Che Hsueh
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Patent number: 9316809Abstract: An image capturing 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 and a fourth 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 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 third lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The fourth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fourth lens element are aspheric. The image capturing lens system has a total of four lens elements with refractive power.Type: GrantFiled: December 18, 2013Date of Patent: April 19, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Wei-Yu Chen
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Publication number: 20160041372Abstract: An optical 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 and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has negative refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The fifth lens element with refractive power has a concave image-side surface, wherein the fifth lens element has at least one inflection point formed on at least one surface thereof. Both of the object-side surface and the image-side surface of the fourth and fifth lens elements are aspheric. The optical image capturing lens assembly has a total of five lens elements with refractive power.Type: ApplicationFiled: October 20, 2015Publication date: February 11, 2016Inventors: Po-Lun HSU, Chun-Shan CHEN, Dung-Yi HSIEH, Tsung-Han TSAI, Hsin-Hsuan HUANG
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Patent number: 9250420Abstract: An optical image capturing 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 with refractive power has a convex object-side surface in a paraxial region thereof and a concave image-side surface in a paraxial region thereof. The second lens element has positive refractive power. The third lens element with negative refractive power has a concave image-side surface in a paraxial region thereof. The fourth lens element with positive refractive power has a convex image-side surface in a paraxial region thereof. The fifth lens element with negative refractive power has a concave image-side surface in a paraxial region thereof, wherein the surfaces thereof are aspheric. The optical image capturing system has a total of five lens elements with refractive power.Type: GrantFiled: October 28, 2013Date of Patent: February 2, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Cheng-Chen Lin, Lin-Yao Liao, Wei-Yu Chen
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Patent number: 9244256Abstract: An optical 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 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 has negative refractive power. The third lens element has refractive power. The fourth 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 fifth 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, and the image-side surface thereof has at least one convex shape in an off-axial region thereof.Type: GrantFiled: March 6, 2014Date of Patent: January 26, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Lin-Yao Liao, Cheng-Chen Lin, Wei-Yu Chen
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Patent number: 9239410Abstract: A 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 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 with positive refractive power has a convex object-side surface and a convex image-side surface. The fourth lens element with negative refractive power has a concave object-side surface. The object-side surface and an image-side surface of the fourth lens element are aspheric. The fifth lens element with refractive power has a concave image-side surface. An object-side surface and the image-side surface of the fifth lens element are aspheric, and the fifth lens element has at least one inflection point formed on the image-side surface thereof.Type: GrantFiled: June 11, 2014Date of Patent: January 19, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Chun-Shan Chen, Hsiang-Chi Tang, Po-Lun Hsu, Ming-Ta Chou
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Patent number: 9201215Abstract: An optical 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 and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element has negative refractive power. The fourth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. The fifth lens element with refractive power has a concave image-side surface, wherein the fifth lens element has at least one inflection point formed on at least one surface thereof. Both of the object-side surface and the image-side surface of the fourth and fifth lens elements are aspheric. The optical image capturing lens assembly has a total of five lens elements with refractive power.Type: GrantFiled: January 29, 2013Date of Patent: December 1, 2015Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Chun-Shan Chen, Dung-Yi Hsieh, Tsung-Han Tsai, Hsin-Hsuan Huang
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Publication number: 20150338616Abstract: A photographing 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 positive refractive power has a convex object-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point thereon. The sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point.Type: ApplicationFiled: August 3, 2015Publication date: November 26, 2015Inventors: Po-Lun HSU, Tsung-Han TSAI, Hsin-Hsuan HUANG
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Patent number: 9140876Abstract: A photographing 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 positive refractive power has a convex object-side surface. The second lens element, the third lens element and the fourth lens element have refractive power. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point thereon. The sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, wherein the surfaces thereof are aspheric, and at least one of the surfaces thereof has at least one inflection point.Type: GrantFiled: September 3, 2014Date of Patent: September 22, 2015Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Tsung-Han Tsai, Hsin-Hsuan Huang
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Publication number: 20150185446Abstract: An optical 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 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 has negative refractive power. The third lens element has refractive power. The fourth 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 fifth 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, and the image-side surface thereof has at least one convex shape in an off-axial region thereof.Type: ApplicationFiled: March 6, 2014Publication date: July 2, 2015Applicant: LARGAN PRECISION CO., LTD.Inventors: Po-Lun HSU, Lin-Yao LIAO, Cheng-Chen LIN, Wei-Yu CHEN
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Patent number: 9052491Abstract: 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 and a fifth lens element. The imaging lens assembly has five non-cemented lens elements with refractive power and further includes a stop located between an imaged object and the first lens element. The first lens element with positive refractive power has a convex object-side surface. The second through fifth lens elements all have refractive power. The third lens element has a convex image-side surface. The fifth lens element has a concave image-side surface at a paraxial region thereof, wherein the image-side surface of the fifth lens element has a convex shape at a peripheral region thereof, and both of an object-side surface and the image-side surface of the fifth lens element are aspheric.Type: GrantFiled: April 12, 2013Date of Patent: June 9, 2015Assignee: LARGAN PRECISION CO., LTD.Inventors: Hsiang-Chi Tang, Po-Lun Hsu, Wei-Yu Chen
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Publication number: 20150130992Abstract: An image capturing 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 and a fourth 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 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 third lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof. The fourth lens element with refractive power has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the fourth lens element are aspheric. The image capturing lens system has a total of four lens elements with refractive power.Type: ApplicationFiled: December 18, 2013Publication date: May 14, 2015Applicant: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Wei-Yu Chen
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Publication number: 20150103225Abstract: An optical image capturing 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 with refractive power has a convex object-side surface in a paraxial region thereof and a concave image-side surface in a paraxial region thereof. The second lens element has positive refractive power. The third lens element with negative refractive power has a concave image-side surface in a paraxial region thereof. The fourth lens element with positive refractive power has a convex image-side surface in a paraxial region thereof. The fifth lens element with negative refractive power has a concave image-side surface in a paraxial region thereof, wherein the surfaces thereof are aspheric. The optical image capturing system has a total of five lens elements with refractive power.Type: ApplicationFiled: October 28, 2013Publication date: April 16, 2015Applicant: Largan Precision Co., Ltd.Inventors: Po-Lun HSU, Cheng-Chen LIN, Lin-Yao LIAO, Wei-Yu CHEN