Patents by Inventor Yifu Cheng

Yifu Cheng 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).

  • Patent number: 12235419
    Abstract: An optical imaging lens group is disclosed. An implementation of the optical imaging lens group includes, sequentially along an optical axis from an object side to an image side: first to eighth lenses having refractive powers. The object-side surface of the first lens is a concave surface. The image-side surface of the third lens is a concave surface. Half of a maximal field-of-view Semi-FOV of an optical imaging system satisfies: Semi-FOV>60°, and an optical distortion Dist. of the optical imaging system satisfies: |Dist.|?5.1%.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: February 25, 2025
    Assignee: Zhejiang Sunny Optics Co., Ltd
    Inventors: Yifu Cheng, Mengna Tang, Jianke Wenren, Fujian Dai, Liefeng Zhao
  • Publication number: 20220317418
    Abstract: The disclosure provides an optical imaging lens assembly, sequentially including from an object side to an image side along an optical axis: a first lens having a refractive power; a second lens having a negative refractive power; a third lens having a refractive power; a fourth lens having a negative refractive power; a fifth lens having a negative refractive power; a sixth lens having a refractive power, an object-side surface thereof being a concave surface, and an image-side surface thereof being a convex surface; and a seventh lens having a refractive power; wherein TTL, a distance from an object-side surface of the first lens to an imaging surface of the optical imaging lens assembly along the optical axis and f, a total effective focal length of the optical imaging lens assembly satisfy TTL/f<1.
    Type: Application
    Filed: March 10, 2022
    Publication date: October 6, 2022
    Inventors: Yifu CHENG, Mengna TANG, Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220221692
    Abstract: A camera lens assembly is provided. The camera lens assembly along an optical axis from an object side to an image side, sequentially includes: a first lens having negative refractive power; a second lens having refractive power; a third lens having 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. A distance TTL from an object-side surface of the first lens to an image plane of the camera lens assembly on the optical axis, a half of a diagonal length ImgH of an effective pixel area of the camera lens assembly and a total effective focal length f of the camera lens assembly satisfy: 15 mm<TTL×ImgH/f<18 mm; and a distortion DIST0.8F of the camera lens assembly at an 0.8 field-of-view satisfies: |DIST0.8F|<2%.
    Type: Application
    Filed: January 7, 2022
    Publication date: July 14, 2022
    Inventors: Mengna TANG, Yifu CHENG, Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220187579
    Abstract: The present disclosure discloses an optical imaging lens group. The optical imaging lens group comprises, sequentially along an optical axis from an object side to an image side: a first lens, having a refractive power, an object-side surface of the first lens being a concave surface; a second lens, having a refractive power; a third lens, having a refractive power, an image-side surface of the third lens being a concave surface; a fourth lens, having a refractive power; a fifth lens, having a refractive power; a sixth lens, having a refractive power; a seventh lens, having a refractive power; and an eighth lens, having a refractive power, wherein half of a maximal field-of-view Semi-FOV of an optical imaging system satisfies: Semi-FOV>60°, and an optical distortion Dist. of the optical imaging system satisfies: |Dist.|?5.1%.
    Type: Application
    Filed: November 18, 2021
    Publication date: June 16, 2022
    Inventors: Yifu Cheng, Mengna Tang, Jianke Wenren, Fujian Dai, Liefeng Zhao