Patents by Inventor Saifeng LYU

Saifeng LYU 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: 11966014
    Abstract: An optical imaging lens group 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 positive refractive power, and both an object-side surface and an image-side surface thereof are convex; the second lens has refractive power, and an object-side surface thereof is convex; the third lens has refractive power, and an object-side surface thereof is concave; the fourth lens has refractive power; the fifth lens has refractive power; the sixth lens has refractive power, and an object-side surface thereof is convex; and the seventh lens has negative refractive power. An edge thickness ET6 of the sixth lens and a center thickness CT6 of the sixth lens along the optical axis satisfy 0.2<ET6/CT6<0.9.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: April 23, 2024
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Long Li, Saifeng Lyu
  • Patent number: 11966011
    Abstract: The present disclosure discloses an optical imaging lens assembly, which includes sequentially from an object side to an image side along an optical axis, a first lens and at least one subsequent lens having refractive power. A distance TTL along the optical axis from an object-side surface of the first lens to an image plane of the optical imaging lens assembly and a distance P along the optical axis from a to-be-captured object to the object-side surface of the first lens satisfy 0.6<TTL/P*10<1.8.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: April 23, 2024
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Mengna Tang, Saifeng Lyu
  • Patent number: 11960059
    Abstract: The disclosure discloses an optical imaging system including a first lens, a second lens, a third lens, and a plurality of subsequent lenses with refractive power and disposed sequentially along an optical axis from an object side to an image side, wherein a lens adjacent to an object side of a lens closest to an imaging plane has a positive refractive power, wherein the lens closest to the imaging plane has a negative refractive power, and an object side surface and an image side surface of the lens closest to an imaging plane are aspheric, and wherein a combined focal length f23 of the second lens and the third lens and an effective focal length fn of the lens closest to the imaging plane satisfy: ?1.5<f23/fn<5.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: April 16, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Ming Li, Saifeng Lyu
  • Patent number: 11927727
    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 and a sixth lens having refractive power. An object-side surface of the first lens is convex, and an image-side surface of the first lens is concave; an image-side surface of the second lens is concave; and an object-side surface of the sixth lens is convex. An effective focal length f1 of the first lens and an effective focal length f5 of the fifth lens satisfy 1?f5/f1?3.5. A distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy TTL/ImgH?1.3.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 12, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Saifeng Lyu, Tianxiang Xing
  • Patent number: 11886039
    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, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, each of which has refractive power. An object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface; an image-side surface of the second lens is a concave surface; and an object-side surface of sixth lens is a concave surface. 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 group and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the optical imaging lens group satisfy TTL/ImgH?1.23.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: January 30, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd.
    Inventors: Saifeng Lyu, Xiaohui Zhang, Mengna Tang
  • Patent number: 11747594
    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 an object-side surface thereof is a convex surface; the second lens has a negative refractive power, and an image-side surface thereof is a concave surface; each of the third lens, the fourth lens, the fifth lens and the sixth lens have a positive refractive power or a negative refractive power; the seventh lens has a negative refractive power, and an object-side surface thereof is a concave surface. A total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy f/f1?2.0.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: September 5, 2023
    Inventors: Saifeng Lyu, Ming Li
  • Patent number: 11733484
    Abstract: The present disclosure provides an optical imaging lens assembly and an electronic device. The optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, a window member; a first lens having a positive refractive power, and an object-side surface of the first lens being a convex surface; a second lens having a negative refractive power; and at least one subsequent lens having a refractive power, wherein an entrance pupil diameter EPD of the optical imaging lens assembly and half of an effective aperture DTg of the window member at an object-side surface thereof satisfy: EPD/DTg>1.6, which makes the optical imaging lens assembly have the characteristics of high resolution and miniaturization. When the optical imaging lens assembly is installed on an electronic device, it can minimize the impact on the full-screen display.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: August 22, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Mengna Tang, Saifeng Lyu, Ling Ding, Fujian Dai, Liefeng Zhao
  • Patent number: 11733485
    Abstract: The present disclosure discloses an optical imaging lens assembly, and the optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis: a first lens having positive refractive power, and at least one subsequent lens having refractive power. An F-number Fno1 of the optical imaging lens assembly satisfies Fno1>3.5, where an object distance is finite, and an F-number Fno2 of the optical imaging lens assembly satisfies Fno2?1.0, where the object distance is infinite.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: August 22, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Saifeng Lyu, Fujian Dai, Liefeng Zhao
  • Patent number: 11719913
    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 refractive power with a convex object-side surface; a second lens having positive refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having positive refractive power with a convex image-side surface; and a seventh lens having negative refractive power. An effective focal length f of the optical imaging system and a maximum field-of-view FOV of the optical imaging system satisfy f*tan(FOV/2)>4.0 mm. The effective focal length f of the optical imaging system and a radius of curvature R9 of an object-side surface of the fifth lens satisfy 0<f/R9<1.0.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: August 8, 2023
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventors: Saifeng Lyu, Mengna Tang, Fujian Dai, Liefeng Zhao
  • Patent number: 11668908
    Abstract: The present disclosure discloses an optical imaging system which 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; a third lens having refractive power with an object-side surface being concave and an image-side surface being convex; a fourth lens having refractive power; a fifth lens having positive refractive power with an object-side surface being convex; a sixth lens having negative refractive power with an object-side surface being concave and an image-side surface being concave. An effective focal length f of the optical imaging system and half of a maximum field-of-view angle Semi-FOV of the optical imaging system may satisfy f*tan(Semi-FOV)>4.4 mm.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: June 6, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Ling Ding, Saifeng Lyu, Fujian Dai, Liefeng Zhao
  • Patent number: 11614598
    Abstract: An optical system, sequentially from an object side to an image side along an optical axis, includes: an glass screen (E1), an interference screen (S3), a lens group, and a color filter (E3). An effective focal length f of the optical system and an entrance pupil diameter EPD of the optical system satisfy f/EPD<1.8. The optical system may be used for fingerprint recognition, and has characteristics such as a large field of view, a larger aperture, and an ultra-thin feature, etc.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: March 28, 2023
    Inventors: Saifeng Lyu, Jianke Wenren
  • Patent number: 11586019
    Abstract: The present disclosure discloses an optical imaging system. The optical imaging system satisfies: f/EPD?1.5; 0.3<T23*10/R4<1.8; ?0.6<f2/f4<?0.1; and TTL/ImgH<1.4, where f is an effective focal length of the optical imaging system, EPD is an entrance pupil diameter of the optical imaging system, T23 is a spaced interval between the second lens and the third lens along the optical axis, R4 a radius of curvature of an image-side surface of the second lens, f2 is an effective focal length of the second lens, f4 is an effective focal length of the fourth lens, TTL is a distance along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging system, and ImgH is half of a diagonal length of an effective pixel area on the imaging plane.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: February 21, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd.
    Inventors: Saifeng Lyu, Mengna Tang, Fujian Dai, Liefeng Zhao
  • Patent number: 11493736
    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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has a negative refractive power; each of the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens has a positive or a negative refractive power; an image-side surface of the third lens and an object-side surface of the sixth lens are concave; and the seventh lens has a negative refractive power, and an image-side surface thereof is concave. A combined focal length f56 of the fifth lens and the sixth lens and a combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens satisfy 2?f56/f1234<6.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: November 8, 2022
    Inventors: Saifeng Lyu, Ming Li
  • Publication number: 20220269045
    Abstract: The disclosure provides an optical imaging system, which sequentially includes, from an object side to an image side along an optical axis: a diaphragm; a first lens with a refractive power, an image-side surface thereof being a convex surface; a second lens with a refractive power; a third lens with a negative refractive power; a fourth lens with a refractive power, an image-side surface thereof being a convex surface; a fifth lens with a refractive power, an object-side surface thereof being a concave surface; a sixth lens with a refractive power; and a seventh lens with a refractive power. EPD is an entrance pupil diameter of the optical imaging system, and a total effective focal length f of the optical imaging system and EPD satisfy f/EPD?1.5.
    Type: Application
    Filed: February 11, 2022
    Publication date: August 25, 2022
    Inventors: Jiaying ZHANG, Saifeng LYU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220229272
    Abstract: Embodiments of the present disclosure provide an optical imaging lens assembly, which comprises, sequentially along an optical axis 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 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; and a seventh lens, having a negative 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: fĂ—tan(Semi-FOV)?5.0 mm; and a center thickness CT1 of the first lens on the optical axis and an edge thickness ET1 of the first lens satisfy: 1.5<CT1/ET1<2.0.
    Type: Application
    Filed: December 22, 2021
    Publication date: July 21, 2022
    Applicant: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Saifeng LYU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220155559
    Abstract: Disclosed in the present application is an optical imaging lens. The optical imaging lens sequentially comprises, along an optical axis from an object side to an image side: a first lens having positive focal power; a second lens having focal power; a third lens having focal power; a fourth lens having positive focal power, an object side surface of the fourth lens being a convex surface and an image side surface thereof being a concave surface; and a fifth lens having negative focal power, an object side surface of the fifth lens being a convex surface and an image side surface thereof being a concave surface. A combined focal length f12 of the first lens and the second lens and a combined focal length f123 of the first lens, the second lens, and the third lens satisfy a relation that 0.5<f12/f123<1.5.
    Type: Application
    Filed: February 3, 2022
    Publication date: May 19, 2022
    Inventors: Shuang Zhang, Saifeng Lyu, Xiaobin Zhang, Fujian Dai, Liefeng Zhao
  • Publication number: 20220091369
    Abstract: The disclosure provides a camera lens group, sequentially including, from an object side to an image side along an optical axis: a first lens with a refractive power, a second lens with a negative refractive power and an image-side surface thereof being concave, a third lens with a positive refractive power, a fourth lens with a positive refractive power and an image-side surface thereof being convex, and a fifth lens with a negative refractive power, wherein an air space is provided between any two adjacent lenses from the first lens to the fifth lens, and at least one lens from the first lens to the fifth lens is provided with an aspheric surface which is in non-rotational symmetry. An effective focal length fx, in an X-axis direction and an effective focal length fy, in a Y-axis direction, of the camera lens group satisfy 0.90<fx/fy<1.25.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 24, 2022
    Inventors: Xusen ZHONG, Saifeng LYU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20210405323
    Abstract: An optical system, sequentially from an object side to an image side along an optical axis, includes: an glass screen (E1), an interference screen (S3), a lens group, and a color filter (E3). An effective focal length f of the optical system and an entrance pupil diameter EPD of the optical system satisfy f/EPD<1.8. The optical system may be used for fingerprint recognition, and has characteristics such as a large field of view, a larger aperture, and an ultra-thin feature, etc.
    Type: Application
    Filed: September 20, 2018
    Publication date: December 30, 2021
    Inventors: Saifeng Lyu, Jianke Wenren
  • Patent number: 11099359
    Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly sequentially includes, from an object side to an image side along an optical axis, a first lens group and a second lens group. The first lens group includes a first lens having a positive refractive power and a second lens having a negative refractive power. The second lens group includes at least one optical element and at least one lens having a refractive power, where an object-side surface and an image-side surface of the at least one optical element are aspheric surfaces. An effective focal length f1 of the first lens and a combined focal length f12 of the first lens and the second lens satisfy: f1/f12>0.65.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: August 24, 2021
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Ming Li, Saifeng Lyu
  • Patent number: 11092770
    Abstract: A camera lens group is disclosed. The camera lens group 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 having refractive powers. The second lens has a positive refractive power. An object-side surface of the second lens, an object-side surface of the third lens, and an object-side surface of the sixth lens are a convex surface. An image-side surface of the third lens, an image-side surface of the sixth lens, and an image-side surface of the seventh lens are a concave surface. A center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: CT4/CT5>1.5.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: August 17, 2021
    Inventors: Jianke Wenren, Ming Li, Saifeng Lyu, Lihui Ye