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: 12044834
    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: Grant
    Filed: April 13, 2023
    Date of Patent: July 23, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Fujian Dai, Kaiyuan Zhang, Liefeng Zhao
  • Patent number: 12044827
    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. Each of the first to the sixth lenses has reactive power. The second lens has positive refractive power. An image-side surface of the fourth lens is concave. A radius of curvature R2 of an image-side surface of the first lens, a radius of curvature R5 of an object-side surface of the third lens and an effective focal length f3 of the third lens satisfy: 2.5<(R2+R5)/f3<11.0.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: July 23, 2024
    Assignee: Zhejiang Sunny Optics Co., Ltd
    Inventors: Yanping Li, Lingbo He, Jianjun Li, Fujian Dai, Liefeng Zhao
  • Publication number: 20240241338
    Abstract: An optical lens assembly. The optical lens assembly comprises a lens barrel, and first to sixth lenses. The refractive power of the fifth lens and the refractive power of the sixth lens are positive-negative opposite, and an image-side surface of the fifth lens is a convex surface. The lens barrel further comprises a fourth spacer and a fifth spacer, the fourth spacer being disposed between the fourth lens and the fifth lens, and the fifth spacer being disposed between the fifth lens and the sixth lens. An axial distance EP45 from an image-side surface of the fourth spacer to an object-side surface of the fifth spacer, a center thickness CT5 of the fifth lens, an effective focal length f5 of the fifth lens, an effective focal length f6 of the sixth lens and a radius of curvature R10 of the image-side surface of the fifth lens satisfy: ?0.5<EP45/CT5*|f5+f6|/R10<0.
    Type: Application
    Filed: April 27, 2023
    Publication date: July 18, 2024
    Inventors: Xianchao SHI, Qian LI, Fang ZHANG, Fujian DAI, Liefeng ZHAO
  • Patent number: 12038563
    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, a sixth lens and a seventh lens, wherein the fifth lens has a negative refractive power; an object-side surface of the sixth lens is a concave surface, and an image-side surface of the sixth lens is a convex surface; a maximum field of view FOV of the optical imaging lens assembly satisfies 100°<FOV<120°; ImgH is a half the diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, and ImgH satisfies ImgH>4.5 mm; and a total effective focal length f of the optical imaging lens assembly and an Entrance Pupil Diameter (EPD) of the optical imaging lens assembly satisfy f/EPD<2.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: July 16, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Jiaying Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 12032137
    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 having a positive refractive power; a second lens having a negative refractive power; a third lens having a refractive power; a fourth lens having a refractive power and an image-side surface of the fourth lens being a concave surface; and a fifth lens having a refractive power. ImgH, half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, TTL, a distance from an object-side surface of the first lens to the imaging surface on the optical axis, and f, a total effective focal length of the optical imaging lens assembly satisfy: ImgH/(TTL/f)>45 mm, which makes the optical imaging lens assembly have the features of long focus, a large image surface, etc.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: July 9, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Qi Wu, Fujian Dai, Liefeng Zhao
  • Patent number: 12025774
    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 having refractive power. A center thickness CT6 of the sixth lens along the optical axis and a spaced interval T56 between the fifth lens and the sixth lens along the optical axis satisfy: 1.5<CT6/T56<2.6. A relative F number Fno of the optical imaging lens assembly satisfies: Fno?1.7.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: July 2, 2024
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Yabin Hu, Liefeng Zhao, Fujian Dai
  • Patent number: 12025781
    Abstract: The present disclosure discloses a zoom lens assembly. The zoom lens assembly comprises, sequentially along an optical axis from an object side to an image side, a first lens group comprising a first lens and a second lens; a second lens group having a positive refractive power and comprising a third lens, a fourth lens and a fifth lens; a third lens group having a negative refractive power and comprising a sixth lens; and a fourth lens group having a positive refractive power and comprising a seventh lens and an eighth lens. At least one of the first lens to the eighth lens is an aspheric lens. By changing positions of at least two lens groups in the second lens group, the third lens group and the fourth lens group on the optical axis, the zoom lens assembly switches between a wide-angle state and a telephoto state, and a focal length of the zoom lens assembly changes linearly when the zoom lens assembly switches from the wide-angle state to the telephoto state.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: July 2, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yabin Hu, Liefeng Zhao, Fujian Dai
  • Patent number: 12019218
    Abstract: The disclosure discloses an optical imaging lens group, which sequentially includes from an object side to an image side along an optical axis: a first prism has a first reflective surface; a first lens has a refractive power and an object-side surface thereof is a convex surface; a second lens has a refractive power; a third lens has a refractive power, an object-side surface thereof is a concave surface and an image-side surface thereof is a convex surface; a fourth lens has a refractive power; a fifth lens has a refractive power; and a second prism has a second reflective surface. An optical distortion Dist. of the optical imaging lens group satisfies: |Dist.|<0.1%.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: June 25, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Jiaying Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 12019219
    Abstract: The disclosure provides an optical imaging lens assembly, which includes nine lenses. From an object side to an image side, the nine lenses are sequentially: a first lens with positive refractive power, a second lens with positive refractive power, of which an object-side surface thereof is a convex surface while an image-side surface is a concave surface, a third lens with refractive power, of which an object-side surface thereof is a convex surface while an image-side surface is a concave surface, a fourth lens with refractive power, a fifth lens with refractive power, a sixth lens with refractive power, a seventh lens with positive refractive power, an eighth lens with refractive power, and a ninth lens with negative refractive power. The nine lenses are independent of one another and have air spaces on an optical axis.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: June 25, 2024
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Meng Yang, Fujian Dai, Liefeng Zhao
  • Patent number: 12019215
    Abstract: The disclosure provides an optical imaging system, sequentially including 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 from an object side to an image side along an optical axis, wherein an image-side surface of the seventh lens is a concave surface; the optical imaging system meets the following conditional expressions: TTL/ImgH<1.3, f/EPD<1.8, ImgH>6 mm and 0<R15/f8<0.8, wherein TTL is a distance from an object-side surface of the first lens to an imaging surface of the optical imaging system on the optical axis; ImgH is a half of diagonal length of an effective pixel region on the imaging surface; f is a total effective focal length of the optical imaging system; EPD is an entrance pupil diameter of the optical imaging system.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: June 25, 2024
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD
    Inventors: Xiaofang Wang, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Publication number: 20240192486
    Abstract: A camera module. The camera module includes a lens barrel, and a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens having a negative refractive power provided in the lens barrel, and a spacer arranged between the sixth lens and the seventh lens on the optical axis of the camera module. An effective focal length f7 of the seventh lens, an inner diameter d6m of an image-side surface of the sixth spacer, an air interval T67 between the sixth lens and the seventh lens along the optical axis, and a maximum thickness CP6 of the sixth spacer satisfy: 1.0<|d6m/f7|+T67/CP6<8.5.
    Type: Application
    Filed: April 12, 2023
    Publication date: June 13, 2024
    Applicant: Zhejiang Sunny Optics Co., Ltd
    Inventors: Ren DING, Qionghua ZHOU, Zeguang WANG, Hui LI, Yazhu SONG, Jiadong ZHU, Xiancui DING, Lin HUANG, Liefeng ZHAO, Fujian DAI
  • Patent number: 12007533
    Abstract: The present disclosure discloses an optical imaging lens assembly including a first lens having positive refractive power with a convex object-side surface and a concave image-side surface; a second lens having refractive power; a third lens having refractive power with a concave image-side surface; a fourth lens having positive refractive power; a fifth lens having refractive power with a convex object-side surface and a concave image-side surface; a sixth lens having positive refractive power with a convex object-side surface and a convex image-side surface; and a seventh lens having negative refractive power with a concave object-side surface and a concave image-side surface. A distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane, half a diagonal length ImgH of an effective pixel area on the imaging plane and a total effective focal length f satisfy: 5.00 mm<TTL/ImgH*f<6.00 mm.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 11, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Haidong Xiao, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 12000988
    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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens. Each of the first lens to the tenth lens has refractive power. Half of a diagonal length ImgH of an effective pixel area on an imaging plane of the camera lens group satisfies: ImgH?6.00 mm.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: June 4, 2024
    Assignee: Zhejiang Sunny Optics Co., Ltd
    Inventors: Yanping Li, Lingbo He, Fujian Dai, Liefeng Zhao
  • Patent number: 12000989
    Abstract: The disclosure provides an imaging lens assembly, which sequentially includes, a movable diaphragm, a first lens, a second lens with a refractive power, a third lens with a refractive power, a fourth lens with a positive refractive power and a fifth lens with a refractive power, wherein an effective focal length f1 of the first lens and an effective focal length f4 of the fourth lens meet 1.0<f4/f1<2.3; and TSmin, a distance from the movable diaphragm at a minimum distance from an imaging surface of the imaging lens assembly to an object-side surface of the first lens on the optical axis, TSmax, a distance from the movable diaphragm at a maximum distance from the imaging surface of the imaging lens assembly to the object-side surface of the first lens on the optical axis and CT1, a center thickness of the first lens on the optical axis meet 1.0<(|TSmin|+|TSmax|)/CT1<1.5.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: June 4, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yi Zhang, Fujian Dai, Liefeng Zhao
  • Patent number: 12000992
    Abstract: The present disclosure provides an optical imaging system and a camera device equipped with the optical imaging system.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: June 4, 2024
    Assignee: Zhejiang Sunny Optical Co., Ltd
    Inventors: Saifeng Lv, Fujian Dai
  • Patent number: 12000990
    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 refractive power; a fifth lens with a positive refractive power; a sixth lens with a negative refractive power; a seventh lens with a refractive power; an eighth lens with a positive refractive power; a ninth lens with a refractive power; and a tenth lens with a negative refractive power; wherein an effective focal length f of the optical imaging lens assembly and a maximum field of view FOV of the optical imaging lens assembly satisfy f×tan(½FOV)>6.0 mm.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: June 4, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Jia Lu, Binqing Wang, Meng Yang, Fujian Dai, Liefeng Zhao
  • Publication number: 20240176107
    Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes: a 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, a fourth lens, a fifth lens and a sixth lens that have refractive powers, where there is an air spacing between any adjacent two lenses in the first lens to the sixth lens along the optical axis, and an air spacing between the fifth lens and the sixth lens is minimum; at least one spacing element, including: a fourth spacing element disposed on an image side of the fourth lens and partially in contact with an image-side surface of the fourth lens; and a lens barrel, for accommodating the lens group and the at least one spacing element. The optical imaging lens assembly satisfies: 4.0<R8/d4s+T45/CP4<11.5.
    Type: Application
    Filed: April 24, 2023
    Publication date: May 30, 2024
    Inventors: Chunchun Gao, Yu Zhou, Fang Zhang, Liefeng Zhao, Fujian Dai
  • Publication number: 20240176106
    Abstract: The disclosure provides an optical imaging lens assembly. The optical imaging lens assembly includes a lens barrel, wherein the lens barrel is internally provided with a first lens; a second lens; a third lens; a fourth lens, wherein the fourth lens has a positive refractive power; a fifth lens, wherein the fifth lens has the largest outer diameter in all of lenses of the optical imaging lens assembly; and a plurality of spacers, wherein the plurality of spacers at least include a fourth spacer, the fourth spacer is located on an image side of the fourth lens and abuts against an image-side surface of the fourth lens, and the fourth spacer is thicker than remaining spacers; wherein f and FOV and CP4 satisfy 0<f*tan(Semi-FOV)/CP4<10; R8 and R9 and CP4 satisfy 0<(R8+R9)/CP4<15. The disclosure solves the problem of a low yield of the optical imaging lens assembly.
    Type: Application
    Filed: March 30, 2023
    Publication date: May 30, 2024
    Inventors: Huilong LI, Quanfeng YANG, Chao WANG, Zongliang ZHENG, Fujian DAI, Liefeng ZHAO
  • Patent number: 11988814
    Abstract: The present disclosure discloses a camera lens group including, sequentially from an object side to an image side along an optical axis, a stop; a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having positive refractive power; and a seventh lens having negative refractive power. An aperture number Fno of the camera lens group satisfies: Fno?1.53. A distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the camera lens group and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the camera lens group satisfy: TTL/ImgH?1.31.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: May 21, 2024
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Xue Gao, Jianke Wenren, Fujian Dai, Liefeng Zhao
  • Publication number: 20240159991
    Abstract: An optical lens assembly, including: a lens barrel; five lenses arranged sequentially along optical axis; a first spacer, in contact with at least part of an image-side surface of a first lens; a second spacer, in contact with at least part of an image-side surface of the second lens; and a focal length f2 of the second lens, the center thickness CT2 of the second lens on the optical axis, an air spacing T23 between the second lens and a third lens on the optical axis, a maximum thickness CP2 of the second spacer, and a distance EP12 between an image-side surface of the first spacer and an object-side surface of the second spacer along the optical axis satisfy: ?50.0<f2/(CT2+T23)+f2/(EP12+CP2)<0.
    Type: Application
    Filed: April 18, 2023
    Publication date: May 16, 2024
    Inventors: Weiwang CHEN, Fan YANG, Fujian DAI, Liefeng ZHAO