Patents by Inventor Congfang Si
Congfang Si 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: 20260194731Abstract: A camera optical lens includes seven lenses sequentially from an object side to an image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power. Following relational expressions are satisfied: 1.10?R9/R10?1.90; 1.50?(R5+R6)/(R5?R6)?2.80; 17.00?(f6?f7)/d12?20.00; and 0.17?(v1?v2)*d2/(f1?f2)?0.32. The camera optical lens has good optical performance and characteristics of large aperture, wide-angle, and ultra-thinness, and is particularly suitable for a mobile phone camera lens assembly and a WEB camera lens composed of camera elements such as CCD, CMOS with high resolution.Type: ApplicationFiled: September 25, 2025Publication date: July 9, 2026Inventors: Congfang Si, Shunda Zhou
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Publication number: 20250314860Abstract: A camera optical lens sequentially includes seven lenses from an object side to an image side: first camera optical lens having positive refractive power, second distortion having negative refractive power, third distortion having negative refractive power, fourth lens having positive refractive power, fifth lens having negative refractive power, sixth lens having positive refractive power, and seventh lens having negative refractive power; distortion of the camera optical lens at 1.0 field of view is DIST1.0H, distortion at 0.8 field of view is DIST0.8H, a distortion at 0.6 field of view is DIST0.6H, distortion at 0.5 field of view is DIST0.5H, distortion at 0.3 field of view is DIST0.3H, combined focal length of first lens, second lens, third lens, fourth lens and fifth lens is f12345, combined focal length of sixth lens and seventh lens is f67, and following relational expressions are satisfied: 0.40?(DIST0.8H?DIST0.5H)/(DIST0.5H?DIST0.3H)?1.60; ?0.13?(DIST1.0H?DIST0.8H)/(DIST0.8H?DIST0.6H)?2.50; and 0.Type: ApplicationFiled: July 31, 2024Publication date: October 9, 2025Inventors: Congfang Si, Wei Sun, Shunda Zhou
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Publication number: 20250314858Abstract: The present disclosure relates to the field of optical lenses, and discloses a camera optical lens sequentially comprising seven lenses from an object side to an image side: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power; which satisfy ?0.25?f12/f34567?0.05; 0.13?|TEP/SAG11|*(f/R1)?2.80; 0.15?SZD1/HZD1?0.30; 0.07?SZD2/HZD2?0.25.Type: ApplicationFiled: July 19, 2024Publication date: October 9, 2025Inventors: Wei Sun, Shunda Zhou, Congfang Si
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Publication number: 20250314859Abstract: The present disclosure relates to the field of optical lenses, and discloses a camera optical lens and a lens assembly sequentially including seven lenses from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and the camera optical lens further includes an aperture; and following relational expressions are satisfied:— 8. ? ( SAG ? 51 / SD ? 51 * R ? 9 ) / ( SAG ? 72 / SD ? 72 * R ? 14 ) ? - 3.3 ; 0.8 ? HC ? 71 / SD ? 71 ? 0 .95 ; 0.85 ? HC ? 72 / SD ? 72 ? 0.97 ; and 1.1 ? ( d ? 10 + d ? 12 ) / d ? 11 ? 2.1 .Type: ApplicationFiled: July 31, 2024Publication date: October 9, 2025Inventors: Shunda Zhou, Congfang Si, Wei Sun
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Patent number: 12032129Abstract: Disclosed is a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a negative refractive power, a sixth lens with a positive refractive power, a seventh lens with a negative refractive power, an eighth lens with a positive refractive power and an ninth lens with a negative refractive power. The camera optical lens satisfies: ?1.60?f1/f??0.50, 3.00?d13/d14?15.00. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.Type: GrantFiled: December 29, 2020Date of Patent: July 9, 2024Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTDInventor: Congfang Si
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Patent number: 11966022Abstract: The present disclosure provides a camera optical lens including eight lenses which are, from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a negative refractive power; the camera optical lens satisfies conditions of: 0.95?f/TTL; 3.00?f2/f?5.00; and 3.50?(R9+R10)/(R9?R10)?30.00. The camera optical lens can achieve good optical performance while meeting the design requirements for large aperture, long focal length and ultra-thinness.Type: GrantFiled: December 29, 2020Date of Patent: April 23, 2024Assignee: Raytech Optical (Changzhou) Co., LtdInventor: Congfang Si
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Patent number: 11947077Abstract: A camera optical lens is provided. The camera optical lens includes, from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The camera optical lens satisfies following conditions: 2.00?f1/f?5.00, and 2.00?d3/d4?10.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d3 denotes an on-axis thickness of the second lens, and d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens. The camera optical lens according to the present disclosure meets design requirements for large aperture, wide angle and ultra-thinness while having good optical performance.Type: GrantFiled: December 25, 2020Date of Patent: April 2, 2024Assignee: Changzhou Raytech Optronics Co., Ltd.Inventor: Congfang Si
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Publication number: 20220137347Abstract: The present disclosure provides a camera optical lens including eight lenses which are, from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a negative refractive power; the camera optical lens satisfies conditions of: 0.95?f/TTL; 3.00?f2/f?5.00; and 3.50?(R9+R10)/(R9?R10)?30.00. The camera optical lens can achieve good optical performance while meeting the design requirements for large aperture, long focal length and ultra-thinness.Type: ApplicationFiled: December 29, 2020Publication date: May 5, 2022Inventor: Congfang Si
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Publication number: 20220113503Abstract: Disclosed is a camera optical lens, including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a negative refractive power, a sixth lens with a positive refractive power, a seventh lens with a negative refractive power, an eighth lens with a positive refractive power and an ninth lens with a negative refractive power. The camera optical lens satisfies: ?1.60?f1/f??0.50, 3.00?d13/d14?15.00. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.Type: ApplicationFiled: December 29, 2020Publication date: April 14, 2022Inventor: Congfang Si
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Publication number: 20220066153Abstract: A camera optical lens is provided. The camera optical lens includes, from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The camera optical lens satisfies following conditions: 2.00?f1/f?5.00, and 2.00?d3/d4?10.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d3 denotes an on-axis thickness of the second lens, and d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens. The camera optical lens according to the present disclosure meets design requirements for large aperture, wide angle and ultra-thinness while having good optical performance.Type: ApplicationFiled: December 25, 2020Publication date: March 3, 2022Inventor: Congfang Si
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Patent number: 10732382Abstract: A high-pixel lens which increases a length of a front half includes: an aperture diaphragm S, a first lens piece L1, a second lens piece L2, a third lens piece L3, a fourth lens piece L4 and an optical filter in sequence from an object side to an image side, wherein the L1, the L2, the L3 and the L4 are all plastic aspheric lens pieces, wherein: the L1 is a biconvex lens piece having a positive focal power; the L2 is a meniscus lens piece having a negative focal power and being convex towards the image side; the L3 is a biconvex lens piece having a positive focal power, and at least one side of the L3 has an inflection point; and the L4 is a biconcave lens piece having a negative power, and at least one side of the L4 has at least one inflection point.Type: GrantFiled: July 16, 2018Date of Patent: August 4, 2020Assignee: LIAONING ZHONGLAN ELECTRONIC TECHNOLOGY CO LTDInventors: Congfang Si, Tae Young Kim
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Publication number: 20180321466Abstract: A high-pixel lens which increases a length of a front half includes: an aperture diaphragm S, a first lens piece L1, a second lens piece L2, a third lens piece L3, a fourth lens piece L4 and an optical filter in sequence from an object side to an image side, wherein the L1, the L2, the L3 and the L4 are all plastic aspheric lens pieces, wherein: the L1 is a biconvex lens piece having a positive focal power; the L2 is a meniscus lens piece having a negative focal power and being convex towards the image side; the L3 is a biconvex lens piece having a positive focal power, and at least one side of the L3 has an inflection point; and the L4 is a biconcave lens piece having a negative power, and at least one side of the L4 has at least one inflection pointType: ApplicationFiled: July 16, 2018Publication date: November 8, 2018Inventors: Congfang Si, Tae Young Kim