Patents by Inventor Chih Wen Hsu
Chih Wen 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: 20180138351Abstract: A light blocking sheet includes a first outer layer, a second outer layer, an inner substrate layer and a central axis. The first outer layer includes a first opening. The second outer layer includes a second opening. The inner substrate layer is disposed between the first outer layer and the second outer layer. The inner substrate layer connects the first outer layer to the second outer layer, and the inner substrate layer includes a substrate opening. The central axis is coaxial with the first opening, the second opening and the substrate opening.Type: ApplicationFiled: February 16, 2017Publication date: May 17, 2018Inventors: Chih-Wen HSU, Chih-Wei CHENG, Ming-Ta CHOU
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Patent number: 9759892Abstract: An imaging 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 negative refractive power has an image-side surface being concave. The second lens element has an object-side surface being concave and an image-side surface being convex. The third lens element has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element with negative refractive power has an object-side surface being concave.Type: GrantFiled: January 8, 2016Date of Patent: September 12, 2017Assignee: LARGAN PRECISION CO., LTD.Inventors: Chih-Wen Hsu, Wei-Yu Chen
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Publication number: 20170146774Abstract: An imaging 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 negative refractive power has an image-side surface being concave. The second lens element has an object-side surface being concave and an image-side surface being convex. The third lens element has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element with negative refractive power has an object-side surface being concave.Type: ApplicationFiled: January 8, 2016Publication date: May 25, 2017Inventors: Chih-Wen Hsu, Wei-Yu Chen
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Patent number: 9588318Abstract: The present invention provides an image capturing optical system comprising: a positive first lens element having a convex object-side surface in a paraxial region; a second lens element with refractive power; a third lens element; a fourth lens element having a concave image-side surface in a paraxial region; a plastic fifth lens element having a concave image-side surface in a paraxial region, and the image-side surface has at least one convex shape in an off-axis region thereof; and a plastic sixth lens element w having a concave image-side surface in a paraxial region, and the image-side surface has at least one convex shape in an off-axis region thereof.Type: GrantFiled: August 27, 2014Date of Patent: March 7, 2017Assignee: LARGAN PRECISION CO., LTD.Inventors: Wei-Yu Chen, Chih-Wen Hsu
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Patent number: 9429735Abstract: An 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 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 has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof, wherein both of the surfaces thereof are aspheric. The fourth 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 fourth lens element has at least one convex shape in an off-axis region thereof, and both of the surfaces thereof are aspheric. The optical lens system has a total of four lens elements with refractive power.Type: GrantFiled: December 2, 2014Date of Patent: August 30, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Chih-Wen Hsu, Wei-Yu Chen
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Patent number: 9348115Abstract: A photographing 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 with negative refractive power has a concave image-side surface. The second lens element has 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 image-side surface, wherein an object-side surface and the image-side surface of the fourth lens element are aspheric. The fifth lens element with positive refractive power has a convex object-side surface and a convex image-side surface, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric.Type: GrantFiled: December 1, 2014Date of Patent: May 24, 2016Assignee: LARGAN PRECISION CO., LTD.Inventors: Chih-Wen Hsu, Wei-Yu Chen
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Publication number: 20160124183Abstract: A photographing 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 with negative refractive power has a concave image-side surface. The second lens element has 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 image-side surface, wherein an object-side surface and the image-side surface of the fourth lens element are aspheric. The fifth lens element with positive refractive power has a convex object-side surface and a convex image-side surface, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric.Type: ApplicationFiled: December 1, 2014Publication date: May 5, 2016Inventors: Chih-Wen Hsu, Wei-Yu Chen
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Publication number: 20160116706Abstract: An 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 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 has negative refractive power. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof, wherein both of the surfaces thereof are aspheric. The fourth 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 fourth lens element has at least one convex shape in an off-axis region thereof, and both of the surfaces thereof are aspheric. The optical lens system has a total of four lens elements with refractive power.Type: ApplicationFiled: December 2, 2014Publication date: April 28, 2016Inventors: Chih-Wen HSU, Wei-Yu CHEN
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Publication number: 20150370042Abstract: The present invention provides an image capturing optical system comprising: a positive first lens element having a convex object-side surface in a paraxial region; a second lens element with refractive power; a third lens element; a fourth lens element having a concave image-side surface in a paraxial region; a plastic fifth lens element having a concave image-side surface in a paraxial region, and the image-side surface has at least one convex shape in an off-axis region thereof; and a plastic sixth lens element w having a concave image-side surface in a paraxial region, and the image-side surface has at least one convex shape in an off-axis region thereof.Type: ApplicationFiled: August 27, 2014Publication date: December 24, 2015Inventors: WEI-YU CHEN, CHIH-WEN HSU
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Patent number: 9007701Abstract: An optical lens assembly for image pickup, sequentially arranged from an object side to an image side along the optical axis, comprising: the first lens element with negative refractive power has a convex object-side surface and a concave image-side surface; the second lens element with positive refractive power has bi-convex surfaces; and the third lens element with negative refractive power, made of plastic, and which has a convex object-side surface and a concave image-side surface with at least one thereof is aspheric. By such arrangements, the optical lens assembly for image pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.Type: GrantFiled: March 7, 2012Date of Patent: April 14, 2015Assignee: Largan Precision Co.Inventors: Chih-Wen Hsu, Ming-Ta Chou
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Publication number: 20150034471Abstract: A keyboard capable of generating a tactile feedback signal makes use of acceleration change of pressing behavior and releasing behavior of a physical keyswitch during pressing and releasing stages. The acceleration change is modulated according to a touch sensitive frequency response in various ways so that a simulated tactile feedback may be generated on the keyswitches of the keyboard.Type: ApplicationFiled: July 30, 2014Publication date: February 5, 2015Inventors: Shana Shiang-Fong Smith, Chien-Min Wu, Chih-Wen Hsu, Tzu-Kuei Lee, Huang-Hsiao Kao, Chih-An Wang, Fei-Ya Chen
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Patent number: 8908288Abstract: An image capturing 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 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 positive refractive power. The fifth lens element with negative refractive power is made of plastic material, and has an image-side surface being concave at a paraxial region and being convex at a peripheral region, wherein at least one of an object-side surface and the image-side surface of the fifth lens element is aspheric.Type: GrantFiled: October 26, 2012Date of Patent: December 9, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chih-Wen Hsu, Tsung-Han Tsai, Wei-Yu Chen
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Patent number: 8891178Abstract: This invention provides an optical lens system in order from an object side to an image side comprising: a first lens element having a convex object-side surface; a negative second lens element having a concave object-side surface and a convex image-side surface; a positive third lens element having a convex object-side surface and a convex image-side surface; a plastic negative fourth lens element having a concave object-side surface and a convex image-side surface, with both the object-side and image-side surfaces thereof being aspheric. By such arrangement, the incident angle of off-axis light projected onto the sensor can be suppressed for improving the sensitivity of the sensor effectively. Also, a sufficient back focal length can be retained for disposing other optical elements (e.g., an IR-pass filter), and thereby the system can be more suitable for the infrared aspect of optical imaging systems.Type: GrantFiled: June 25, 2012Date of Patent: November 18, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chih-Wen Hsu, Tsung-Han Tsai, Ming-Ta Chou
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Patent number: 8842379Abstract: An image capturing 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 and a fourth lens element. The first lens element with negative refractive power has an image-side surface being concave at a paraxial region. The second lens element with positive refractive power has an image-side surface being convex at a paraxial region. The third lens element with negative refractive power has an object-side surface being concave at a paraxial region, and an image-side surface being convex at a paraxial region. The fourth lens element with positive refractive power has an object-side surface being convex at a paraxial region, and an image-side surface being concave at a paraxial region, and at least one of the object-side surface and the image-side surface is aspheric.Type: GrantFiled: February 8, 2013Date of Patent: September 23, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chih-Wen Hsu, Tsung-Han Tsai, Wei-Yu Chen
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Patent number: 8817386Abstract: This invention provides an image capturing lens system in order from an object side to an image side comprising four non-cemented lens elements with refractive power: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface; a plastic third lens element having a concave object-side surface and a convex image-side surface, both the object-side and image-side surfaces thereof being aspheric; and a plastic fourth lens element with negative refractive power having a concave image-side surface, both the object-side and image-side surfaces thereof being aspheric, and at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof; wherein the image capturing lens system comprises a stop positioned between the first lens element and the second lens element.Type: GrantFiled: February 23, 2012Date of Patent: August 26, 2014Assignee: Largan Precision Co., LtdInventors: Chih-Wen Hsu, Tsung-Han Tsai, Ming-Ta Chou
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Patent number: 8792185Abstract: An image lens system includes, in order from an object side to an image side, a first lens element with negative refractive power including a concave image-side surface; a second lens element with positive refractive power including a convex object-side surface; a third lens element with negative refractive power including an object-side surface and a concave image-side surface, the object-side surface and the image-side surface being aspheric; a fourth lens element with positive refractive power including a convex object-side surface and a convex image-side surface; and a fifth lens element with negative refractive power including a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface being aspheric, the fifth lens element having at least one inflection point.Type: GrantFiled: August 24, 2012Date of Patent: July 29, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chih-Wen Hsu, Ming-Ta Chou, Tsung-Han Tsai
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Patent number: 8717687Abstract: An image lens assembly includes, in order from an object side to an image side, the first lens element with positive refractive power having a convex object-side surface, the second lens element with negative refractive power, the third lens element with refractive power, the fourth lens element with positive refractive power made of plastic material, the fifth lens element with negative refractive power made of plastic material. At least one surface of the third lens element, the fourth lens element and the fifth lens element are aspheric.Type: GrantFiled: May 23, 2012Date of Patent: May 6, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chih-Wen Hsu, Tsung-Han Tsai, Ming-Ta Chou
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Publication number: 20140078601Abstract: An image capturing 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 and a fourth lens element. The first lens element with negative refractive power has an image-side surface being concave at a paraxial region. The second lens element with positive refractive power has an image-side surface being convex at a paraxial region. The third lens element with negative refractive power has an object-side surface being concave at a paraxial region, and an image-side surface being convex at a paraxial region. The fourth lens element with positive refractive power has an object-side surface being convex at a paraxial region, and an image-side surface being concave at a paraxial region, and at least one of the object-side surface and the image-side surface is aspheric.Type: ApplicationFiled: February 8, 2013Publication date: March 20, 2014Applicant: LARGAN PRECISION CO., LTD.Inventors: Chih-Wen Hsu, Tsung-Han Tsai, Wei-Yu Chen
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Patent number: 8649115Abstract: An optical image 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 and a convex image-side surface. The second lens element with refractive power has a concave object-side surface and a convex image-side surface. The third lens element with refractive power has two surfaces being aspheric. The fourth lens element with positive refractive power has a convex image-side surface, wherein the surfaces of the fourth lens element are aspheric. The fifth lens element with negative refractive power has a concave image-side surface, wherein the surfaces of the fifth lens element are aspheric, and the fifth lens element has inflection points on at least one of the surfaces thereof.Type: GrantFiled: September 14, 2012Date of Patent: February 11, 2014Assignee: Largan Precision Co., Ltd.Inventors: Chun-Shan Chen, Chih-Wen Hsu, Hsin-Hsuan Huang
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Publication number: 20130321932Abstract: An image capturing 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 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 positive refractive power. The fifth lens element with negative refractive power is made of plastic material, and has an image-side surface being concave at a paraxial region and being convex at a peripheral region, wherein at least one of an object-side surface and the image-side surface of the fifth lens element is aspheric.Type: ApplicationFiled: October 26, 2012Publication date: December 5, 2013Applicant: LARGAN PRECISION CO., LTD.Inventors: Chih-Wen HSU, Tsung-Han TSAI, Wei-Yu CHEN