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).

  • Electronic imaging device comprising two capturing devices
    Patent number: 11531186
    Abstract: The present disclosure discloses an electronic imaging device including a first capturing device and a second capturing device. The first capturing device includes a first lens system and a first electronic photosensitive element located on an imaging plane of the first lens system. The second capturing device includes a second lens system and a second electronic photosensitive element located on an imaging plane of the second lens system. The first capturing device and the second capturing device are located at a same side of the electronic imaging device, and a field-of-view of the first capturing device is different from a field-of-view of the second capturing device. A total effective focal length fT of the first lens system and a total effective focal length fW of the second lens system satisfy fT/fW>3.3.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: December 20, 2022
    Assignee: Zhejiang Sunny Optical Co., Ltd.
    Inventors: Jianke Wenren, Jia Lu, Lin Huang, Fujian Dai, Liefeng Zhao
  • Optical imaging lens assembly
    Patent number: 11531187
    Abstract: The present disclosure provides an optical imaging lens assembly, the optical imaging lens assembly sequentially includes, along an optical axis from an object side to an image side: a first lens having a refractive power, where an object-side surface thereof is a concave surface and an image-side surface thereof is a convex surface; a second lens having a 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 refractive power, where an object-side surface thereof is a convex surface and an image-side surface thereof is a concave surface; and a seventh lens having a negative refractive power.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: December 20, 2022
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventors: Xiaoting Geng, Xinquan Wang, Fujian Dai, Liefeng Zhao
  • Optical imaging lens assembly
    Patent number: 11531190
    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 a positive refractive power; a second lens having a positive refractive power; a third lens having a negative refractive power; a fourth lens having a refractive power, an object-side surface thereof being a concave surface, and an image-side surface thereof being a convex surface; a fifth lens having a refractive power; a sixth lens having a positive 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. An effective focal length f of the optical imaging lens assembly and an entrance pupil diameter of the optical imaging lens assembly satisfy f/EPD<1.5.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: December 20, 2022
    Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.
    Inventors: Lihui Ye, Fujian Dai, Liefeng Zhao
  • Optical Imaging Camera Lens Assembly
    Publication number: 20220397742
    Abstract: The disclosure provides an optical imaging camera lens assembly, sequentially including, from an object side to an image side along an optical axis: a first lens having a positive refractive power; a second lens, an object-side surface thereof being a convex surface, and an image-side surface thereof being a concave surface; a third lens having a negative refractive power, and an object-side surface thereof being a convex surface; a fourth lens; a fifth lens having a negative refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power, wherein ImgH is a half of a diagonal length of an effective pixel region on an imaging surface, and TTL is an on-axis distance from the object-side surface of the first lens to the imaging surface, ImgH and TTL satisfy: 4.8 mm<ImgH*ImgH/TTL<7.0 mm; an Abbe number V1 of the first lens satisfies: 70<V1<90.
    Type: Application
    Filed: May 31, 2022
    Publication date: December 15, 2022
    Inventors: Shuang ZHANG, Xiaobin ZHANG, Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • Optical Imaging Camera Lens Assembly
    Publication number: 20220390712
    Abstract: The disclosure provides an optical imaging camera 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 positive refractive power; a third lens having a refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a refractive power; and a seventh lens having a refractive power. At least four lenses among the first lens to the fifth lens are lenses made of a plastic material; the sixth lens is a spherical lens made of a glass material; and a total effective focal length f of the optical imaging camera lens assembly and an entrance pupil diameter (EPD) of the optical imaging camera lens assembly satisfy: f/EPD<1.2.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 8, 2022
    Inventors: Fujian DAI, Xiaoting GENG, Liefeng ZHAO
  • Optical Imaging Lens Assembly
    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
  • Optical Imaging Lens Assembly
    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
  • Optical Imaging Lens
    Publication number: 20220365316
    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: Application
    Filed: July 11, 2019
    Publication date: November 17, 2022
    Inventors: Yuanlin JIA, Wuchao XU, Fujian DAI, Liefeng ZHAO
  • Optical Imaging Lens Assembly
    Publication number: 20220350116
    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 (L1) with a refractive power; a second lens (L2) with a refractive power, an image-side surface (S4) of the second lens (L2) is a concave surface; a third lens (L3) with a positive refractive power, an object-side surface (S5) of the third lens (L3) is a convex surface; a fourth lens (L4) with a refractive power; and a fifth lens (L5) with a refractive power. TTL is a distance from an object-side surface (S1) of the first lens (L1) to an imaging surface (S13) of the optical imaging lens assembly on the optical axis, EPD is an Entrance Pupil Diameter of the optical imaging lens assembly, and TTL and EPD satisfy TTL/EPD<2.
    Type: Application
    Filed: August 20, 2020
    Publication date: November 3, 2022
    Inventors: Qiqi LOU, Jianlai XIE, Fujian DAI, Liefeng ZHAO
  • OPTICAL IMAGING LENS ASSEMBLY
    Publication number: 20220350111
    Abstract: The present disclosure provides an optical imaging lens assembly. The optical imaging lens assembly includes, sequentially along an optical axis from an object side to an image side: a stop; a first lens, having a refractive power; a second lens, having a refractive power, an object-side surface of the second lens being a concave surface; a third lens, having a positive refractive power; a fourth lens, having a negative refractive power, an object-side surface of the fourth lens being a convex surface; a fifth lens, having a refractive power; and a sixth lens, having a refractive power. A distance TTL from an object-side surface of the first lens to an image plane of the optical imaging lens assembly along the optical axis and half of a diagonal length ImgH of an effective pixel area on the image plane of the optical imaging lens assembly satisfy: TTL/ImgH<1.5.
    Type: Application
    Filed: March 18, 2022
    Publication date: November 3, 2022
    Applicant: Zhejiang Sunny Optics Co., Ltd
    Inventors: Yikun ZHAO, Yu ZHOU, Yunbing JI, Fujian DAI, Liefeng ZHAO
  • Optical Imaging Lens Assembly
    Publication number: 20220350113
    Abstract: An optical imaging lens assembly sequentially includes, from an object side to an image side along an optical axis, a first lens (E1) with a positive refractive power, a second lens (E2) with a negative refractive power, a third lens (E3) with a refractive power, a fourth lens (E4) with a refractive power, a fifth lens (E5) with a refractive power, a sixth lens (E6) with a positive refractive power, and a seventh lens (E7) with a negative refractive power. EPD is an entrance pupil diameter of the optical imaging lens assembly, Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and EPD and Semi-FOV satisfy: 11 mm<EPD/TAN(Semi-FOV)<20 mm. Therefore, a good shooting effect is achieved in a slightly dark environment.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 3, 2022
    Inventors: Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • Optical Imaging Lens Group
    Publication number: 20220342186
    Abstract: The disclosure provides an optical imaging lens group. The optical imaging lens group includes: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an iris diaphragm, the iris diaphragm is arranged between the first lens and the second lens. Wherein Fno2 is an F-number when an object distance of the optical imaging lens group is 1000 mm, Fno1 is an F-number when the object distance of the optical imaging lens group is 7000 mm, and Fno2 and Fno1 satisfy: 1.3<Fno2/Fno1<1.8; ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens group, FOV is a maximum field of view of the optical imaging lens group, and ImgH and FOV satisfy: 4.5<ImgH*tan(FOV/2)<5.5.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 27, 2022
    Inventors: Jianke WENREN, Liefeng ZHAO, Fujian DAI
  • Imaging System
    Publication number: 20220342185
    Abstract: The disclosure relates to an imaging system, including a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from an object side to an image side along an optical axis, wherein the first lens, the second lens, the third lens and the sixth lens all have refractive powers, the fourth lens has a negative refractive power, the fifth lens has a positive refractive power, and the seventh lens has a negative refractive power. The imaging system of the disclosure has excellent characteristics such as ultra-wide angle, thereby being able to satisfy more photography demands.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 27, 2022
    Inventors: Yanping LI, Lingbo HE, Lin HUANG, Fujian DAI, Liefeng ZHAO
  • OPTICAL IMAGING LENS ASSEMBLY
    Publication number: 20220334359
    Abstract: An optical imaging lens assembly includes, sequentially along an optical axis from an object side to an image side: a first lens, having a negative refractive power, an image-side surface of the first lens being a concave surface; a second lens, having a positive refractive power, an object-side surface of the second lens being a convex surface; and a third lens, having a refractive power, an object-side surface of the third lens being a convex surface. A Half of a diagonal length ImgH of an effective pixel area on an image plane of the optical imaging lens assembly, an effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy: 3 mm<ImgH×f/EPD<4 mm. A maximal field-of-view FOV of the optical imaging lens assembly and the effective focal length f of the optical imaging lens assembly satisfy: 1 mm<tan(FOV/2)×f<2 mm.
    Type: Application
    Filed: March 8, 2022
    Publication date: October 20, 2022
    Inventors: Tingting Gong, Litong Song, Fujian Dai, Liefeng Zhao
  • Optical Imaging System
    Publication number: 20220334355
    Abstract: The disclosure discloses 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 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 refractive power; a sixth lens with a refractive power, an object-side surface thereof is a convex surface; and a seventh lens with a positive refractive power, wherein an effective focal length f of the optical imaging system and an entrance pupil diameter (EPD) of the optical imaging system satisfy: f/EPD<1.3; and TTL is an on-axis distance from an object-side surface of the first lens to an imaging surface, Semi-FOV is a half of a maximum field of view of the optical imaging system, and TTL and Semi-FOV satisfy: 3.0 mm<TTL×Tan(Semi-FOV)<4.0 mm.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 20, 2022
    Inventors: Wenchao ZHAO, Yabin HU, Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • Optical Imaging Lens Assembly
    Publication number: 20220334353
    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, an object-side surface thereof is a convex surface, and an image-side surface thereof is a concave surface; a second lens with a negative refractive power; a third lens with a refractive power; a fourth lens with a positive refractive power; and a fifth lens with a negative refractive power; VP is an on-axis distance from an intersection point of a straight line where a marginal ray of the optical imaging lens assembly is located and the optical axis to the object-side surface of the first lens, and VP satisfies 0 mm<VP<1.5 mm.
    Type: Application
    Filed: September 3, 2020
    Publication date: October 20, 2022
    Inventors: Shuang ZHANG, Xiaobin ZHANG, Fujian DAI, Liefeng ZHAO
  • Optical Imaging Lens Assembly
    Publication number: 20220334361
    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 variable diaphragm; a first lens; a second lens; a third lens; a fourth lens; a fifth lens, an object-side surface thereof is a convex surface; a sixth lens; and a seventh lens. a center thickness CT1 of the first lens on the optical axis and an air space T67 between the sixth lens and the seventh lens on the optical axis satisfy CT1/T67<1.0.
    Type: Application
    Filed: April 2, 2022
    Publication date: October 20, 2022
    Inventors: Nian CHEN, Haidong XIAO, Xiangxi WU, Wuchao XU, Fujian DAI, Liefeng ZHAO
  • Optical Imaging System
    Publication number: 20220334362
    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; a second lens with a negative refractive power; a third lens with a refractive power; a fourth lens with a negative refractive power; a fifth lens with a refractive power; a sixth lens with a positive refractive power, an image-side surface thereof is a convex surface; and a seventh lens with a refractive power, wherein an effective focal length f of the optical imaging system and an entrance pupil diameter (EPD) of the optical imaging system satisfy: f/EPD<1.4; the effective focal length f of the optical imaging system and a curvature radius R4 of an image-side surface of the second lens satisfy: 2.5<f/R?3.5.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 20, 2022
    Inventors: Jian ZHANG, Yabin HU, Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • OPTICAL IMAGING LENS ASSEMBLY
    Publication number: 20220334354
    Abstract: The present disclosure discloses an optical imaging lens assembly including, sequentially along an optical axis from an object side to an image side: a stop; a first lens having positive refractive power; a second lens having refractive power; a third lens having negative refractive power; a fourth lens having refractive power; a fifth lens having negative refractive power; and a sixth lens having refractive power and a convex image-side surface. The first to sixth lenses include two glass aspheric lenses. 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 an effective focal length f of the optical imaging lens assembly satisfy: TTL/f<1.0.
    Type: Application
    Filed: March 22, 2022
    Publication date: October 20, 2022
    Applicant: Zhejiang Sunny Optics CO, Ltd.
    Inventors: Yang LI, Tianxiang XING, Lingbo HE, Fujian DAI, Liefeng ZHAO
  • OPTICAL IMAGING LENS ASSEMBLY
    Publication number: 20220326487
    Abstract: The present disclosure provides an optical imaging lens assembly, comprising, sequentially along an optical axis from an object side to an image side: a first lens, having a negative refractive power, an object-side surface of the first lens being a concave surface; a second lens, having a positive refractive power, an image-side surface of the second lens being a convex surface; and a third lens, having a refractive power, an image-side surface of the third lens being a concave surface. An effective focal length f1 of the first lens and an effective focal length f of the optical imaging lens assembly satisfy: ?4<f1/f<?2. A maximal field-of-view FOV of the optical imaging lens assembly and the effective focal length f of the optical imaging lens assembly satisfy: 1 mm<tan(FOV/2)×f<2 mm.
    Type: Application
    Filed: March 9, 2022
    Publication date: October 13, 2022
    Inventors: Tingting GONG, Litong SONG, Fujian DAI, Liefeng ZHAO