Patents by Inventor Fujian Dai

Fujian Dai 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: 11899168
    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 positive refractive power; a second lens having positive refractive power and a convex object-side surface; and a third lens having negative refractive power. 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 satisfy 2.0<TTL/ImgH<2.5.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: February 13, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yabin Hu, Fujian Dai, Liefeng Zhao
  • Patent number: 11899281
    Abstract: An optical imaging lens sequentially includes, from an object side to an image side along an optical axis: a first lens (E1) with refractive power; a second lens (E2) with positive refractive power; a third lens (E3) with positive refractive power; a fourth lens (E4) with refractive power; a fifth lens (E5) with positive refractive power; a sixth lens (E6) with refractive power; and a seventh lens (E7) with refractive power. A total effective focal length f of the optical imaging lens and a curvature radius R4 of an image-side surface of the second lens meet 0.6<R4/f<1.5. TTL is a distance from an object-side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis, and ImgH is a half of a diagonal length of an effective pixel region on the imaging surface of the optical imaging lens, TTL and ImgH meet 0.55<TTL/(ImgH×2)<0.75.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: February 13, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yuanlin Jia, Wuchao Xu, Fujian Dai, Liefeng Zhao
  • 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: 11899179
    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, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens with a refractive power respectively; a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy 1.0?CT4/CT3<1.5; and a spacing distance T34 between the third lens and the fourth lens on the optical axis and a spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy 4.0<T34/T45<15.5.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: February 13, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Xiangyue Meng, Litong Song, Fujian Dai, Liefeng Zhao
  • Patent number: 11899178
    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, a third lens with a positive refractive power, a fourth lens, a fifth lens with a positive refractive power and a sixth lens with a negative refractive power, wherein a total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter (EPD) of the optical imaging lens assembly meet f/EPD<1.35; and an effective focal length f3 of the third lens, an effective focal length f5 of the fifth lens and an effective focal length f1 of the first lens meet 0.9<(f3+f5)/f1<1.7.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: February 13, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Nian Chen, Qi Wu, Fujian Dai, Liefeng Zhao
  • Patent number: 11885944
    Abstract: The disclosure provides a zoom lens group, sequentially including, from an object side to an image side along an optical axis: a first lens group with positive refractive power, including a first lens with refractive power and a second lens with refractive power, which are sequentially arranged along the optical axis; a second lens group with negative refractive power, including a third lens with negative refractive power and a fourth lens with refractive power, which are sequentially arranged along the optical axis; and a third lens group with positive refractive power, including a fifth lens with positive refractive power, a sixth lens with refractive power, a seventh lens with negative refractive power and an eighth lens with refractive power, which are sequentially arranged along the optical axis, Positions of the second lens group and the third lens group on the optical axis are adjustable.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: January 30, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Qi Wu, Fujian Dai, Liefeng Zhao
  • Patent number: 11880024
    Abstract: Disclosed herein is an optical imaging lens group, including, in order from an object side to an image side along an optical axis: a first lens group having a refractive power, in which an image side surface of a lens closest to an imaging side is concave; a second and a third lens group having a refractive power; and a fourth lens group having a negative refractive power, in which an image side surface of a lens closest to the imaging side is concave and includes at least one inflection point, wherein the first lens group is a fixed group, and the second, third and fourth lens groups move on the optical axis to realize continuous zoom from a wide-angle end to a telephoto end; and an on-axis distance TTL and an effective focal length ft of the optical imaging lens group at the telephoto end satisfy: 0.8<TTL/ft<1.5.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: January 23, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yabin Hu, Fujian Dai, Liefeng Zhao
  • Publication number: 20240019664
    Abstract: An optical camera lens assembly is provided, including: a lens group, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged sequentially along an optical axis from an object side to an image side, where, each of the first, the fourth, and the sixth lens has a positive refractive power, and each of the second, the third, the fifth, and the seventh lens has a negative refractive power; and a plurality of spacing elements, including a third spacing element disposed between the third lens and the fourth lens and in contact with an image-side surface of the third lens; the optical camera lens assembly satisfies: 3.0<(R3+R4)/d3s<5.0.
    Type: Application
    Filed: April 14, 2023
    Publication date: January 18, 2024
    Applicant: Zhejiang Sunny Optics Co., Ltd
    Inventors: Jiadong ZHU, Xiancui DING, Lin HUANG, Liefeng ZHAO, Fujian DAI, Zeguang WANG, Hui LI, Chao WANG, Yalin REN
  • Patent number: 11874439
    Abstract: The disclosure discloses an optical imaging lens. The optical imaging lens sequentially includes from an object side to an image side along an optical axis: a first lens having a negative focal power, and provided with an object-side surface, the object-side surface is concave surface; a second lens having a focal power; a third lens having a focal power; a fourth lens having a positive focal power; a fifth lens having a negative focal power, and provided with an image-side surface, the image-side surface is concave surface; a sixth lens having a positive focal power; and a seventh lens having a focal power; at least one aspherical mirror surface is included in the object-side surface of the first lens to an image-side surface of the seventh lens; and a maximum Field of View (FOV) of the optical imaging lens meets 105°?FOV?135°.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: January 16, 2024
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventors: Wenbo Huang, Lingbo He, 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
  • Patent number: 11846756
    Abstract: The present disclosure discloses a camera lens assembly comprising, sequentially from an object side to an image side along an optical axis, a stop; a first lens having a positive refractive power with an object-side surface thereof being a convex surface; a second lens having a positive refractive power; a third lens; a fourth lens; a fifth lens having a positive refractive power; a sixth lens having a negative refractive power with an object-side surface thereof being a concave surface; and wherein, a distance Ts along the optical axis from the stop to the object-side surface of the first lens satisfies: 0<Ts<0.2 mm.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: December 19, 2023
    Assignee: Zhejiang Sunny Optical Co., Ltd.
    Inventors: Lei Guan, Xinquan Wang, Fujian Dai, Liefeng Zhao
  • Publication number: 20230400662
    Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes a lens barrel and a lens group assembled in the lens barrel. The lens group along an optical axis from an object side to an image side sequentially includes 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. An outer diameter of the seventh lens is greater than an outer diameter of any one of the first lens to the sixth lens; and three lenses of the first lens to the sixth lens have positive refractive powers, and other three lenses of the first lens to the sixth lens have negative refractive powers.
    Type: Application
    Filed: May 2, 2023
    Publication date: December 14, 2023
    Inventors: Yazhu Song, Haidong Xiao, Libang Cheng, Qi Chen, Fujian Dai, Liefeng Zhao
  • Publication number: 20230393374
    Abstract: An optical imaging lens assembly is provided, including: an imaging lens group, a plurality of spacing elements, and a lens barrel configured to accommodate the imaging lens group and the plurality of spacing elements comprising a third spacing element that is placed between the third lens and the fourth lens and is in contact with an image-side surface of the third lens. Here, an inner diameter d3s of an object-side surface of the third spacing element, a radius of curvature R5 of an object-side surface of the third lens and a radius of curvature R6 of the image-side surface of the third lens satisfy: 5.0<d3s/(R5+R6)<10.5.
    Type: Application
    Filed: April 18, 2023
    Publication date: December 7, 2023
    Applicant: Zhejiang Sunny Optics Co., Ltd.
    Inventors: Ren DING, Zailin Ke, Zeguang Wang, Hui Li, Chongjian Huang, Jiadong Zhu, Xiancui Ding, Fujian Dai, Liefeng Zhao
  • Patent number: 11835686
    Abstract: The disclosure discloses an optical imaging lens, wherein the optical imaging lens sequentially from an object side to an image side along an optical axis includes, a first lens having a focal power; a second lens having a focal power, with an object side surface being a convex surface, and an image side surface being a concave surface; a third lens having a focal power; a fourth lens having a focal power; a fifth lens having a focal power, with an object side surface being a concave surface; a sixth lens having a focal power; a seventh lens having a positive focal power; and an eighth lens having a negative focal power; wherein, a total effective focal length f of the optical imaging lens and a combined focal length f34 of the third lens and the fourth lens satisfy: 0<f/f34?0.6.
    Type: Grant
    Filed: September 27, 2020
    Date of Patent: December 5, 2023
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventors: Saifeng Lv, Fujian Dai, Liefeng Zhao
  • Publication number: 20230367102
    Abstract: The present disclosure discloses an optical imaging lens assembly including a lens barrel, and a lens group and at least seven spacing elements accommodated in the lens barrel. The lens group comprises first to eighth lenses arranged in sequence along an optical axis from an object side to an image side. Here, at least one lens in the first lens to the fourth lens is a meniscus lens, and a refractive power of the seventh lens and a refractive power of the eighth lens are positive-negative opposite. A distance from a center of an effective-diameter portion of an object-side surface of the eighth lens to a rear-end surface of the lens barrel along the optical axis is less than a distance from an edge of the effective-diameter portion of the object-side surface of the eighth lens to the rear-end surface of the lens barrel along the optical axis.
    Type: Application
    Filed: April 18, 2023
    Publication date: November 16, 2023
    Inventors: Ruihong LI, Long ZHANG, Huilong LI, Bian ZHANG, Fang ZHANG, Fujian DAI, Liefeng ZHAO
  • 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: 11796775
    Abstract: The disclosure provides a zoom lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens group; a second lens group with a positive refractive power, spaced from the first lens group by a first air space and movable on the optical axis; a third lens group with a positive refractive power, spaced from the second lens group by a second air space and movable on the optical axis; and a fourth lens group, spaced from the third lens group by a third air space; wherein a Total Track Length (TTL) of the zoom lens assembly and a difference ?f between an effective focal length of the zoom lens assembly at a wide end and an effective focal length of the zoom lens assembly at a tele end satisfy 2.5<TTL/|?f|<4.0.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: October 24, 2023
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Qian Zhang, Yabin Hu, Fujian Dai, Liefeng Zhao
  • Patent number: 11789232
    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 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; a third lens having a refractive power; a fourth lens having a refractive power; and a fifth lens having a positive refractive power, and an image-side surface of the fifth lens being a concave surface. Here, half of a maximal field-of-view Semi-FOV of the optical imaging lens assembly satisfies Semi-FOV<15°.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: October 17, 2023
    Inventors: Xinquan Wang, Fujian Dai, Liefeng Zhao
  • Patent number: 11789237
    Abstract: The present application discloses an optical imaging system, comprising, in order from an object side to an image side along an optical axis: a planar glass, a first lens having a positive focal power, a second lens having a negative focal power and a plurality of subsequent lenses having a respective focal power, wherein the maximum field of view FOV of the optical imaging system satisfies FOV?40°; and a radius of curvature R3 of an object side surface of the second lens and a radius of curvature R4 of an image side surface of the second lens satisfy ?0.5<R3/R4<0.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: October 17, 2023
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Mengna Tang, Jianke Wenren, Fujian Dai, Liefeng Zhao
  • Patent number: 11789238
    Abstract: Provided is an electronic imaging apparatus including a first and a second image-picking apparatus located on the same side of the electronic imaging apparatus. The first image-picking apparatus includes a first lens system which sequentially includes a first to a seventh lens along its optical axis, the first lens thereof has a positive refractive power, the second lens thereof has a negative refractive power. The second image-picking apparatus includes a second lens system which sequentially includes a first to a seventh lens along its optical axis, where the object-side surface of the first lens is concave and the image-side surface of the first lens is convex, the third lens has a positive refractive power, the fourth lens has negative refractive power, and the fifth lens has a positive refractive power. Half of a maximal field-of-view Semi-FOVT of the first and second lens system Semi-FOVT and Semi-FOVW satisfy 35°<Semi-FOVT<55° and 35°<Semi-FOVW<55°.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: October 17, 2023
    Inventors: Xiaoting Geng, Jia Lu, Lin Huang, Fujian Dai, Liefeng Zhao