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).
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Patent number: 11573398Abstract: 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: GrantFiled: August 18, 2020Date of Patent: February 7, 2023Assignee: Zhejiang Sunny Optical Co., Ltd.Inventors: Biao Xu, Kaiyuan Zhang, Xiaofang Wang, Fujian Dai, Liefeng Zhao
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Patent number: 11573405Abstract: 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 with a convex object-side surface and a concave image-side surface; a second lens having negative refractive power with a concave image-side surface; a third lens having refractive power with a convex object-side surface and a concave image-side surface; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power; a seventh lens having positive refractive power with a convex object-side surface; and an eighth lens having negative refractive power with a concave object-side surface and a concave image-side surface, wherein half of a diagonal length ImgH of an effective pixel area on an imaging plane of the optical imaging lens assembly satisfies: 5.80 mm<ImgH.Type: GrantFiled: August 11, 2020Date of Patent: February 7, 2023Assignee: Zhejiang Sunny Optical Co., LtdInventors: Yang Li, Lingbo He, Liefeng Zhao, Fujian Dai
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Patent number: 11573401Abstract: The application discloses an optical imaging system. The system sequentially comprises the following components from an object side to an image side along an optical axis: a first lens having refractive power, an image side surface of which is a convex surface; a second lens having negative refractive power; a third lens having refractive power, the image side surface of which is a concave surface; a fourth lens having refractive power; a fifth lens having refractive power, the object side surface of which is a convex surface; a sixth lens with positive refractive power, the object side surface of which is a convex surface; a seventh lens having refractive power; an effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system meet the condition that f/EPD is less than 2; the effective focal length f of the optical imaging system, an effective focal length f1 of the first lens, and an effective focal length f2 of the second lens satisfy 0.Type: GrantFiled: November 20, 2019Date of Patent: February 7, 2023Assignee: Zhejiang Sunny Optical Co., LtdInventors: Fujian Dai, Lin Huang, Yunbing Ji
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Patent number: 11567295Abstract: 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 and a seventh lens. At least one of the first lens to the seventh lens is a glass lens. The third lens has positive refractive power, and an image-side surface of the third lens is a convex surface. An object-side surface of the seventh lens is a convex surface, and an image-side surface of the seventh lens is a concave surface. A maximum field-of-view FOV of the optical imaging lens assembly satisfies FOV?134.56°. An effective half-aperture DT62 of an image-side surface of the sixth lens and an effective half-aperture DT72 of the image-side surface of the seventh lens satisfy 0.54?DT62/DT72.Type: GrantFiled: November 2, 2020Date of Patent: January 31, 2023Inventors: Chaoqun Jiang, Fujian Dai, Liefeng Zhao
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Patent number: 11561377Abstract: 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: GrantFiled: September 24, 2020Date of Patent: January 24, 2023Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventors: Nian Chen, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
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Patent number: 11550127Abstract: The present disclosure discloses an optical imaging lens assembly 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, each of which has refractive power. The first lens has a negative refractive power; the the third lens and the sixth lens each has a positive refractive power; an object-side surface of the fourth lens is convex, and an image-side surface thereof is concave; an object-side surface of the fifth lens is convex,and an image-side surface thereof is concave. 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 TTL/ImgH?1.25.Type: GrantFiled: May 8, 2020Date of Patent: January 10, 2023Assignee: Zhejiang Sunny Optical Co., LtdInventors: Xin Wang, Yabin Hu, Fujian Dai, Liefeng Zhao
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Patent number: 11550131Abstract: The present disclosure discloses an imaging apparatus and an electronic device. The imaging apparatus includes a macro lens group, a wide-angle lens group, and a telephoto lens group. An effective focal length fA of the macro lens group, an effective focal length fB of the wide-angle lens group and an effective focal length fC of the telephoto lens group satisfy: fA<fB<fC, 0.20<fA/fB<0.80 and 0.10<fA/fC<0.50.Type: GrantFiled: June 5, 2020Date of Patent: January 10, 2023Inventors: Liefeng Zhao, Jia Lu, Mengna Tang, Jianke Wenren, Fujian Dai
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Patent number: 11543629Abstract: 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: GrantFiled: July 14, 2020Date of Patent: January 3, 2023Inventors: Yang Li, Wuchao Xu, Kaiyuan Zhang, Liefeng Zhao, Fujian Dai
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Patent number: 11543627Abstract: 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 a positive refractive power; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power, a fifth lens having a refractive power, of which an image-side surface is a concave surface; a sixth lens having a refractive power; and a seventh lens having a negative refractive power. An effective focal length f of the optical imaging lens assembly and half of a maximal field-of-view angle HFOV of the optical imaging lens assembly satisfy: 5.5 mm<tan(HFOV)*f<6.5 mm. The optical imaging lens assembly of the present disclosure has at least one of the advantages of a large imaging plane, a large wide angle, a large aperture and ultra-thinness.Type: GrantFiled: May 13, 2020Date of Patent: January 3, 2023Assignee: Zhejiang Sunny Optical Co., LtdInventors: Lin Huang, Fujian Dai, Liefeng Zhao
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Publication number: 20220413261Abstract: 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 group having a positive refractive power and including a first lens; and a second lens group having a positive refractive power and sequentially including from the first lens to the image side along the optical axis: a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the second lens has a positive refractive power; an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a concave surface; the seventh lens has a positive refractive power; the eighth lens has a negative refractive power.Type: ApplicationFiled: May 27, 2022Publication date: December 29, 2022Inventors: Dan HE, Zheng FANG, Saifeng LV, Fujian DAI, Liefeng ZHAO
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Publication number: 20220404588Abstract: The disclosure provides an optical imaging lens assembly, sequentially including, from an object side to an image side along an optical axis: an iris diaphragm; 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 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 refractive power; a seventh lens with a positive refractive power; and an eighth lens with a negative refractive power. EPDmax is a maximum entrance pupil diameter of the optical imaging lens assembly, EPDmin is a minimum entrance pupil diameter of the optical imaging lens assembly, and EPDmax, EPDmin and a total effective focal length f of the optical imaging lens assembly satisfy: f/(EPDmax?EPDmin)>2.2.Type: ApplicationFiled: May 20, 2022Publication date: December 22, 2022Inventors: Haidong XIAO, Fujian DAI, Liefeng ZHAO
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Patent number: 11531189Abstract: The present disclosure discloses an optical imaging system 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, each of which has refractive power. An object-side surface of the second lens is a convex surface, and an image-side surface thereof is a concave surface; an object-side surface of the fourth lens is a convex surface, and an image-side surface thereof is a concave surface; an object-side surface of the fifth lens is a concave surface, and an image-side surface thereof is a convex surface; and each of the third lens and the sixth lens has positive refractive power. A radius of curvature R11 of an object-side surface of the sixth lens and a radius of curvature R12 of an image-side surface of the sixth lens satisfy 0.5<R11/R12<1.5.Type: GrantFiled: April 28, 2020Date of Patent: December 20, 2022Inventors: Lihui Ye, Fujian Dai, Liefeng Zhao
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Patent number: 11531186Abstract: 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: GrantFiled: April 16, 2020Date of Patent: December 20, 2022Assignee: Zhejiang Sunny Optical Co., Ltd.Inventors: Jianke Wenren, Jia Lu, Lin Huang, Fujian Dai, Liefeng Zhao
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Patent number: 11531187Abstract: 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: GrantFiled: April 21, 2020Date of Patent: December 20, 2022Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.Inventors: Xiaoting Geng, Xinquan Wang, Fujian Dai, Liefeng Zhao
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Patent number: 11531190Abstract: 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: GrantFiled: May 21, 2020Date of Patent: December 20, 2022Assignee: ZHEJIANG SUNNY OPTICAL CO., LTD.Inventors: Lihui Ye, Fujian Dai, Liefeng Zhao
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Publication number: 20220397742Abstract: 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: ApplicationFiled: May 31, 2022Publication date: December 15, 2022Inventors: Shuang ZHANG, Xiaobin ZHANG, Jianke WENREN, Fujian DAI, Liefeng ZHAO
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Publication number: 20220390712Abstract: 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: ApplicationFiled: June 1, 2022Publication date: December 8, 2022Inventors: Fujian DAI, Xiaoting GENG, Liefeng ZHAO
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Publication number: 20220373771Abstract: 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: ApplicationFiled: July 24, 2020Publication date: November 24, 2022Inventors: Yi ZHANG, Kaiyuan ZHANG, Fujian DAI, Liefeng ZHAO
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Publication number: 20220365317Abstract: 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: ApplicationFiled: September 3, 2020Publication date: November 17, 2022Inventors: Chen CHEN, Kaiyuan ZHANG, Biao XU, Fujian DAI, Liefeng ZHAO
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Publication number: 20220365316Abstract: 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: ApplicationFiled: July 11, 2019Publication date: November 17, 2022Inventors: Yuanlin JIA, Wuchao XU, Fujian DAI, Liefeng ZHAO