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).

  • Publication number: 20260194731
    Abstract: 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: Application
    Filed: September 25, 2025
    Publication date: July 9, 2026
    Inventors: Congfang Si, Shunda Zhou
  • Publication number: 20250314860
    Abstract: 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: Application
    Filed: July 31, 2024
    Publication date: October 9, 2025
    Inventors: Congfang Si, Wei Sun, Shunda Zhou
  • Publication number: 20250314858
    Abstract: 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: Application
    Filed: July 19, 2024
    Publication date: October 9, 2025
    Inventors: Wei Sun, Shunda Zhou, Congfang Si
  • Publication number: 20250314859
    Abstract: 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: Application
    Filed: July 31, 2024
    Publication date: October 9, 2025
    Inventors: Shunda Zhou, Congfang Si, Wei Sun
  • Patent number: 12032129
    Abstract: 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: Grant
    Filed: December 29, 2020
    Date of Patent: July 9, 2024
    Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
    Inventor: Congfang Si
  • Patent number: 11966022
    Abstract: 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: Grant
    Filed: December 29, 2020
    Date of Patent: April 23, 2024
    Assignee: Raytech Optical (Changzhou) Co., Ltd
    Inventor: Congfang Si
  • Patent number: 11947077
    Abstract: 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: Grant
    Filed: December 25, 2020
    Date of Patent: April 2, 2024
    Assignee: Changzhou Raytech Optronics Co., Ltd.
    Inventor: Congfang Si
  • Publication number: 20220137347
    Abstract: 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: Application
    Filed: December 29, 2020
    Publication date: May 5, 2022
    Inventor: Congfang Si
  • Publication number: 20220113503
    Abstract: 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: Application
    Filed: December 29, 2020
    Publication date: April 14, 2022
    Inventor: Congfang Si
  • Publication number: 20220066153
    Abstract: 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: Application
    Filed: December 25, 2020
    Publication date: March 3, 2022
    Inventor: Congfang Si
  • Patent number: 10732382
    Abstract: 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: Grant
    Filed: July 16, 2018
    Date of Patent: August 4, 2020
    Assignee: LIAONING ZHONGLAN ELECTRONIC TECHNOLOGY CO LTD
    Inventors: Congfang Si, Tae Young Kim
  • Publication number: 20180321466
    Abstract: 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: Application
    Filed: July 16, 2018
    Publication date: November 8, 2018
    Inventors: Congfang Si, Tae Young Kim