Patents by Inventor Kaiyuan Zhang

Kaiyuan Zhang 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: 11899175
    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: Grant
    Filed: November 2, 2020
    Date of Patent: February 13, 2024
    Inventors: Wuchao Xu, Kaiyuan Zhang, Xiaofang Wang, Ying Zhou, Fujian Dai, Liefeng Zhao
  • Patent number: 11867880
    Abstract: The present disclosure discloses an optical imaging system, sequentially from an object side to an image side of the optical imaging system along an optical axis, including: a first lens having refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having positive refractive power; a fifth lens having refractive power; a sixth lens having refractive power; and a seventh lens having refractive power, a concave object-side surface, and a concave image-side surface. Half of a diagonal length ImgH of an effective pixel area on an imaging plane of the optical imaging system may satisfy ImgH>6.0 mm. A total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system may satisfy f/EPD<1.9.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: January 9, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Xiaofang Wang, Biao Xu, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Publication number: 20230367101
    Abstract: An optical lens, a camera module, and an electronic device are disclosed. The optical lens includes a variable aperture, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens that are arranged from an object side to an image side. The first lens has a positive focal power, an object-side surface of the first lens is convex near an optical axis, and an image-side surface of the first lens is concave near the optical axis. The second lens has a negative focal power, an object-side surface of the second lens is convex near the optical axis, and an image-side surface of the second lens is concave near the optical axis.
    Type: Application
    Filed: July 26, 2023
    Publication date: November 16, 2023
    Inventors: Kaiyuan Zhang, Yun Chiang Hsu, Shaopan Zhou, Rongkai Feng
  • Patent number: 11808928
    Abstract: The disclosure provides a combined zoom dual-camera lens assembly, which includes a first lens group and a second lens group, wherein a field of view of the second lens group is larger than a field of view of the first lens group, and a thickness of the second lens group is smaller than a thickness of the first lens group; and a total effective focal length fT of the first lens group and a total effective focal length fW of the second lens group meet fT/fW>9.00.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 7, 2023
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yi Zhang, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 11768353
    Abstract: An optical imaging system includes an optical lens group including, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens; a lens barrel, the optical lens group is accommodated in the lens barrel; and a plurality of spacers including at least two spacers disposed between the third lens and the fourth lens; the diameter D of the lens barrel at an end towards the object side and a maximum effective radius DT11 of an object-side surface of the first lens satisfy 2×DT11/D?0.5.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: September 26, 2023
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Xiaofang Wang, Guijie Zhu, Biao Xu, Qi Chen, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Publication number: 20230251474
    Abstract: A telephoto optical imaging system and zoom camera apparatus. The telephoto optical imaging system includes, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power, a second lens having negative refractive power, an optical path turning prism, and a triangular prism. Distance T from the object-side surface of the first lens to an imaging plane of the telephoto optical imaging system in a normal direction of the imaging plane and the total effective focal length F1 of the telephoto optical imaging system satisfy T/F1<0.6. The zoom camera apparatus includes the telephoto optical imaging system and a short-focus optical imaging system arranged in parallel with the telephoto optical imaging system. A total effective focal length F1 of the telephoto optical imaging system and a total effective focal length F2 of the short-focus optical imaging system satisfy F1/F2>5.
    Type: Application
    Filed: April 13, 2023
    Publication date: August 10, 2023
    Inventors: Fujian Dai, Kaiyuan Zhang, Liefeng Zhao
  • Patent number: 11662558
    Abstract: The present disclosure discloses a camera lens group including, sequentially from an object side to an image side along an optical axis, a first lens having refractive power with a concave image-side surface; a stop; a second lens having positive refractive power with a convex image-side surface; a third lens having refractive power with a concave image-side surface; a fourth lens having positive refractive power with a convex image-side surface; and a fifth lens having negative refractive power with a convex object-side surface and a concave image-side surface. A maximum effective radius DT11 of an object-side surface of the first lens and half of a maximal field-of-view Semi-FOV of the camera lens group satisfy: 2.50 mm?1<tan2(Semi-FOV)/DT11<5.00 mm?1.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 30, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Haidong Xiao, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 11656445
    Abstract: The present disclosure discloses a telephoto optical imaging system and zoom camera apparatus. The telephoto optical imaging system includes, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power, a second lens having negative refractive power, an optical path turning prism, and a triangular prism. A total effective focal length F1 of the telephoto optical imaging system may satisfy F1>40 mm. The zoom camera apparatus includes the telephoto optical imaging system and a short-focus optical imaging system arranged in parallel with the telephoto optical imaging system. A total effective focal length F1 of the telephoto optical imaging system and a total effective focal length F2 of the short-focus optical imaging system satisfy F1/F2>5.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: May 23, 2023
    Inventors: Fujian Dai, Kaiyuan Zhang, Liefeng Zhao
  • Patent number: 11635588
    Abstract: The application discloses an optical imaging lens assembly including, sequentially from an object side to an image side, a first lens having a positive refractive power with a convex object side surface and a concave image side surface; a second lens having a negative refractive power with a convex object side surface and a concave image side surface; a third lens having a refractive power; a fourth lens having a refractive power with a concave image side surface; a fifth lens having a refractive power; a sixth lens having a negative refractive power with a convex object side surface and a concave image side surface. An effective focal length f, an entrance pupil diameter EPD, half of a maximum field of view HFOV and a curvature radius R8 of the image side surface of the fourth lens satisfy f/EPD<2.0, 3.8 mm<f*TAN(HFOV)<5 mm, and R8?500 mm.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: April 25, 2023
    Inventors: Xinghai You, Kaiyuan Zhang, Lin Huang, Liefeng Zhao
  • Patent number: 11598934
    Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power; a second lens having negative refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power with a convex object-side surface; a sixth lens having positive refractive power with a convex object-side surface a convex image-side surface; and a seventh lens having negative refractive power, wherein a distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging lens assembly and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the optical imaging lens assembly satisfy ImgH/(TTL/ImgH)>5.0 mm.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: March 7, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Chen Chen, Kaiyuan Zhang, Biao Xu, Fujian Dai, Liefeng Zhao
  • Patent number: 11579407
    Abstract: The present disclosure provides an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having refractive power; a second lens having refractive power; and a third lens having refractive power. A distance BFL along the optical axis from an image-side surface of the third lens of the optical imaging lens assembly to an imaging plane of the optical imaging lens assembly and a distance Td along the optical axis from an object-side surface of the first lens to the image-side surface of the third lens satisfy: 4.5?BFL/Td?7.0.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: February 14, 2023
    Inventors: Kaiyuan Zhang, Yi Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 11579406
    Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having refractive power; a second lens having refractive power; a third lens having negative refractive power; a fourth lens having refractive power and a convex object-side surface; a fifth lens having refractive power and a concave object-side surface; a sixth lens having refractive power; a seventh lens having refractive power; and an eighth lens having refractive power. A total effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfy: f*tan(Semi-FOV)>5.5 mm. A total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy: 0.5<f/f1<1.5.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: February 14, 2023
    Inventors: Nian Chen, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 11573398
    Abstract: The present disclosure discloses an optical imaging lens group including, sequentially from an object side to an image side along an optical axis, a first lens having positive refractive power with a convex object-side surface; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; and a sixth lens having negative refractive power with a concave object-side surface and a convex image-side surface. A total effective focal length f of the optical imaging lens group, an entrance pupil diameter EPD of the optical imaging lens group and half of a maximal field-of-view Semi-FOV of the optical imaging lens group satisfy: f/EPD<2, and f*tan(Semi-FOV)>4.5 mm.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: February 7, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd.
    Inventors: Biao Xu, Kaiyuan Zhang, Xiaofang Wang, Fujian Dai, Liefeng Zhao
  • Patent number: 11561377
    Abstract: The present disclosure discloses an optical imaging lens assembly, which includes: a first lens having positive refractive power and a convex object-side surface; a second lens having refractive power, and a concave image-side surface; a third lens having refractive power; a fourth lens having refractive power; and a fifth lens having negative refractive power, a concave object-side surface, and a concave image-side surface. The optical imaging lens assembly satisfies TL/ImgH<1.35; 0.6<R9/f5<1.2 and 0.5<ET5/ET4<1, where TTL is a total length of the optical imaging lens assembly, ImgH is a half diagonal length of an effective pixel area on an imaging plane, f5 is an effective focal length of the fifth lens, R9 is a radius of curvature of the object-side surface of the fifth lens, ET4 and ET5 are edge thicknesses of the fourth and the fifth lenses, respectively.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 24, 2023
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Nian Chen, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 11543629
    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: Grant
    Filed: July 14, 2020
    Date of Patent: January 3, 2023
    Inventors: Yang Li, Wuchao Xu, Kaiyuan Zhang, Liefeng Zhao, Fujian Dai
  • Publication number: 20220373771
    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 negative refractive power, and a fourth lens with a positive refractive power. A total effective focal length f of the optical imaging lens assembly satisfies 20 mm<f<30 mm.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 24, 2022
    Inventors: Yi ZHANG, Kaiyuan ZHANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220365317
    Abstract: The disclosure provides an optical imaging lens assembly, wherein the optical imaging lens assembly sequentially includes the followings from an object side to an image side along an optical axis: a first lens having a positive focal power, wherein an object-side surface thereof is a convex surface, and an image-side surface thereof is a concave surface; a second lens having a focal power; a third lens having a focal power; a fourth lens having a focal power; a fifth lens having a focal power; a sixth lens having a positive focal power; and a seventh lens having a negative focal power, wherein an object-side surface thereof is a concave surface, and an image-side surface thereof is a concave surface. DT11, DT12 and ImgH meet:2.4<(DT11+DT12)/lmgHx5<2.7.
    Type: Application
    Filed: September 3, 2020
    Publication date: November 17, 2022
    Inventors: Chen CHEN, Kaiyuan ZHANG, Biao XU, Fujian DAI, Liefeng ZHAO
  • Patent number: 11493733
    Abstract: The present disclosure discloses an optical imaging 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, a sixth lens, a seventh lens and an eighth lens. The first lens has a positive refractive power; the second lens has a negative refractive power; the third lens has a positive or negative refractive power; the fourth lens has a positive refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a convex surface; the fifth lens has a positive or negative refractive power, and an image-side surface thereof is a concave surface; the sixth lens has a positive or negative refractive power; the seventh lens has a positive refractive power; and the eighth lens has a negative refractive power.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: November 8, 2022
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventors: Biao Xu, Kaiyuan Zhang
  • Patent number: 11493731
    Abstract: An optical imaging lens assembly from an object side to an image side along an optical axis sequentially includes: a first lens, having a positive refractive power, its object-side surface is convex and its image-side surface is concave; a second lens, having a refractive power, its object-side surface is convex and its image-side surface is concave; a third lens, having a refractive power; a fourth lens, having a refractive power and its object-side surface is concave; a fifth lens, having a positive refractive power, its object-side surface is concave and its image-side surface is convex; and a sixth lens, having a negative refractive power and its object-side surface is concave. A total effective focal length f of the optical imaging lens assembly and a radius of curvature R12 of an image-side surface of the sixth lens satisfy: 0?f/R12?1.5.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: November 8, 2022
    Inventors: Kaiyuan Zhang, Biao Xu, Bo Song
  • Patent number: RE49789
    Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes, 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, a sixth lens, and a seventh lens. The first lens has a positive refractive power and a convex object-side surface. The second lens has a negative refractive power. The third lens has a positive refractive power. Each of the fourth lens and the fifth lens has a positive refractive power or a negative refractive power. The sixth lens has a positive refractive power. The seventh lens has a negative refractive power, a concave object-side surface and a concave image-side surface. A combined focal length f12 of the first and second lenses and a combined focal length f34 of the third and fourth lenses satisfy:|f12/f34|?0.3.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: January 2, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Biao Xu, Kaiyuan Zhang, Jianke Wenren