Patents by Inventor Wuchao Xu

Wuchao Xu 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: 20220221689
    Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis: a first lens with a positive refractive power; a second lens with a refractive power; a third lens with a refractive power; a fourth lens with a positive refractive power; a fifth lens with a refractive power, an object-side surface thereof being a convex surface while an image-side surface being a concave surface; a sixth lens with a positive refractive power, an object-side surface thereof being a convex surface while an image-side surface being a convex surface; and a seventh lens with a negative refractive power. ImgH is a half of a diagonal length of an effective pixel region on an imaging surface, TTL is an on-axis distance from an object-side surface of the first lens to the imaging surface, ImgH and TTL satisfy: 4.0 mm<ImgH×ImgH/TTL<6.0 mm.
    Type: Application
    Filed: January 7, 2022
    Publication date: July 14, 2022
    Inventors: Chen CHEN, Xiaoxiao ZHU, Wuchao XU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220196983
    Abstract: The present disclosure discloses an optical imaging lens assembly, along an optical axis from an object side to an image side, sequentially includes: a first lens having refractive power; a second lens; a third lens, an object-side surface of the third lens being a concave surface, and an image-side surface of the third lens being a convex surface; a fourth lens having negative refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a concave surface; a fifth lens having refractive power; a sixth lens; and a seventh lens. The optical imaging lens assembly satisfies: TTL/ImgH?1.5; and FOV>100°, where, TTL is a distance from an object-side surface of the first lens to an imaging plane of the optical imaging lens assembly on the optical axis, ImgH is half of a diagonal length of an effective pixel area on the imaging plane, and FOV is a maximum field-of-view of the optical imaging lens assembly.
    Type: Application
    Filed: November 18, 2021
    Publication date: June 23, 2022
    Inventors: Fujian Dai, Wuchao Xu, Liefeng Zhao
  • Publication number: 20220137366
    Abstract: An optical imaging lens assembly including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially from an object side to an image side along an optical axis is provided. The first lens has a negative refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a convex surface; and the third lens has a negative refractive power. The distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis and a half ImgH of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens assembly satisfy: TTL/ImgH?1.4.
    Type: Application
    Filed: August 16, 2021
    Publication date: May 5, 2022
    Inventors: Fujian Dai, Wuchao Xu, Liefeng Zhao
  • Publication number: 20220026690
    Abstract: The present disclosure discloses a zoom lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens group having refractive power; a second lens group having negative refractive power; a third lens group having refractive power; and a fourth lens group having refractive power. The zoom lens assembly may be continuously zoomed by changing positions of the second lens group and the third lens group along the optical axis. A total effective focal length ft of the zoom lens assembly in a telephoto state, and a total effective focal length fw of the zoom lens assembly in a wide-angle state satisfy: 1.3<ft/fw<3.3.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 27, 2022
    Inventors: Fujian DAI, Wuchao XU, Qi WU, Liefeng ZHAO
  • Publication number: 20220026684
    Abstract: The disclosure provides an optical imaging lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens with a refractive power; a second lens with a refractive power; a third lens with a refractive power; a fourth lens with a refractive power; a fifth lens with a refractive power; and a sixth lens with a refractive power. Wherein Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and Semi-FOV satisfies Semi-FOV?60°; A curvature radius of an object-side surface of the first lens and a curvature radius of an image-side surface of the first lens satisfy ?2.5<(R1?R2)/(R1+R2)<?1.0; A curvature radius of an object-side surface of the second lens and a curvature radius of an image-side surface of the second lens satisfy 1.5<R4/R3<2.5.
    Type: Application
    Filed: July 23, 2021
    Publication date: January 27, 2022
    Inventors: Yang GAO, Xiangxi WU, Wuchao XU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20210405327
    Abstract: The disclosure provides an optical imaging system, which sequentially includes, from an object side to an image side along an optical axis: a first lens, second lens, third lens, fourth lens, fifth lens, sixth lens and seventh lens with refractive power; and a diaphragm arranged between the second lens and the third lens, wherein an effective focal length f1 of the first lens and a total effective focal length f of the optical imaging system meet 1.5<f1/f<3.0; and a radius of curvature R13 of an object-side surface of the seventh lens and a radius of curvature R14 of an image-side surface of the seventh lens meet 1.5<R13/R14<2.0.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 30, 2021
    Inventors: Fujian DAI, Chen CHEN, Wuchao XU, Liefeng ZHAO
  • Publication number: 20210199926
    Abstract: The present disclosure discloses an optical imaging lens assembly, sequentially from an object side to an image side along an optical axis, including: a first lens having refractive power, an object-side surface thereof is concave, and an image-side surface thereof is convex; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having negative refractive power, and an object-side surface thereof is concave; a sixth lens having positive refractive power; and a seventh lens having refractive power. A total effective focal length f of the optical imaging lens assembly and an effective focal length f3 of the third lens may satisfy f3/f>1.49.
    Type: Application
    Filed: November 2, 2020
    Publication date: July 1, 2021
    Inventors: Wuchao Xu, Kaiyuan Zhang, Xiaofang Wang, Ying Zhou, Fujian Dai, Liefeng ZHAO
  • Publication number: 20210109326
    Abstract: The present disclosure discloses a camera lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has negative refractive power; the second lens has positive refractive power; the third lens has negative refractive power; the fourth lens has refractive power; the fifth lens has refractive power; and the sixth lens has negative refractive power. At least one of the first lens to the sixth lens has a non-rotationally symmetrical aspheric surface. An effective focal length fx in an X-axis direction of the camera lens assembly and an effective focal length fy in a Y-axis direction of the camera lens assembly satisfy 0.5<fx/fy<1.5.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yuanlin JIA, Wuchao XU
  • Publication number: 20210033823
    Abstract: The present disclosure discloses an optical imaging system including, sequentially from an object side to an image side along an optical axis, a first lens having a negative refractive power with a concave object-side surface and a concave image-side surface; a stop; a second lens having a refractive power; a third lens having a negative refractive power; a fourth lens having a refractive power with a convex object-side surface, and a convex image-side surface; and a fifth lens having a refractive power. Half of a maximal field-of-view Semi-FOV of the optical imaging system satisfies 45.0°?Semi-FOV<65.0°, and an effective focal length f2 of the second lens and a center thickness CT2 of the second lens along the optical axis satisfy 2.5?f2/CT2?3.0.
    Type: Application
    Filed: July 14, 2020
    Publication date: February 4, 2021
    Inventors: Yang Li, Wuchao Xu, Kaiyuan Zhang, Liefeng Zhao, Fujian Dai
  • Publication number: 20200249441
    Abstract: The present disclosure discloses a camera lens group including, sequentially from an object side to an image side of the camera lens group along an optical axis, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has a negative refractive power; the second lens has a negative refractive power; the third lens has a refractive power, and an object-side surface of the third lens is concave; the fourth lens has a positive refractive power, an object-side surface of the fourth lens is convex, and an image-side surface of the fourth lens is convex; and the fifth lens has a refractive power. A half of a maximum field of view HFOV of the camera lens group satisfies 0.8<tan(HFOV/2)<1.2.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Inventors: Wuchao Xu, Yuanlin Jia