Patents by Inventor Liefeng Zhao
Liefeng Zhao 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: 12078782Abstract: A camera lens is provided, including, in order from an object side to an image side along an optical axis: a first lens having a positive refractive power; a second lens; and a third lens. An equivalent length TL of an actual propagation distance of a principal ray from an object side surface of the first lens to an imaging plane in the air and an entrance pupil diameter EPD of the camera lens satisfy: 3.5<TLEPD<4.0.Type: GrantFiled: October 25, 2021Date of Patent: September 3, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Jiacheng Yao, Saifeng Lv, Fujian Dai, Liefeng Zhao
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Patent number: 12078779Abstract: A camera optical lens is provided consisting of: an optical path turning element and a second lens having a refractive power. The optical path turning element has a refractive power and has an incident surface, a reflecting surface and an exit surface, both the incident surface and the exit surface are aspherical lens surfaces, the reflecting surface is a planar lens surface. The optical path turning element is configured so that light incident on the optical path turning element through the incident surface along a direction of a Y optical axis is reflected by the reflecting surface and then exits through the exit surface along a direction of an X optical axis, where the direction of the Y optical axis and the direction of the X optical axis cross each other; and wherein a total effective focal length f of the camera optical lens can satisfy 20 mm?f?30 mm.Type: GrantFiled: January 8, 2021Date of Patent: September 3, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Yi Zhang, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
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Patent number: 12078869Abstract: An optical imaging lens assembly sequentially includes, from an object side to an image side along an optical axis, a first lens (E1), second lens (E2), third lens (E3), fourth lens (E4), fifth lens (E5) and sixth lens (E6) with refractive power. The first lens (E1) has a positive refractive power, and an image-side surface (S2) of the first lens is a concave surface. The second lens (E2) has a negative refractive power. The fifth lens (E5) has a negative refractive power, and an object-side surface (S9) of the fifth lens is a concave surface. A distance TTL from an object-side surface (S1) of the first lens (E1) to an imaging surface (S15) of the optical imaging lens assembly and a total effective focal length f of the optical imaging lens assembly satisfy TTL/f?0.85.Type: GrantFiled: October 10, 2019Date of Patent: September 3, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Jianke Wenren, Yuhao Wang, Fujian Dai, Liefeng Zhao
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Patent number: 12078783Abstract: 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 having negative refractive power and a concave image-side surface; a stop; a second lens having positive refractive power and a convex image-side surface; a third lens having refractive power and a concave image-side surface; a fourth lens having positive refractive power and a convex image-side surface; and a fifth lens having negative refractive power, a convex object-side surface and a concave image-side surface. A maximum field-of-view FOV of the camera lens group satisfies: FOV>114°. A maximum distortion of the camera lens group is within 8%.Type: GrantFiled: March 12, 2021Date of Patent: September 3, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Long Li, Liefeng Zhao, Fujian Dai
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Patent number: 12078784Abstract: 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 refractive power, a concave object-side surface and a concave image-side surface; a second lens having positive refractive power; a third lens having refractive power and a convex object-side surface; a fourth lens having positive refractive power; and a fifth lens having negative refractive power. An effective focal length f1 of the first lens and a radius of curvature R1 of the object-side surface of the first lens satisfy 0.7?f1/R1<1.5.Type: GrantFiled: May 4, 2021Date of Patent: September 3, 2024Assignee: Zhejiang Sunny Optics Co., LtdInventors: Jianke Wenren, Fenglong Lu, Fujian Dai, Liefeng Zhao
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Patent number: 12072474Abstract: 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 having negative refractive power, a convex object-side surface and a concave image-side surface; a second lens having refractive power, a convex object-side surface and a concave image-side surface; a third lens having positive refractive power, a convex object-side surface and a convex image-side surface; a fourth lens having refractive power; a fifth lens having refractive power and a concave object-side surface; a sixth lens having positive refractive power, a convex object-side surface and a convex image-side surface; and a seventh lens having negative refractive power. A maximum field-of-view FOV of the camera lens group satisfies: FOV>133.0°. An amount of distortion of the camera lens group is below 25.0%.Type: GrantFiled: March 12, 2021Date of Patent: August 27, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Xiaobin Zhang, Fujian Dai, Liefeng Zhao
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Patent number: 12055680Abstract: An optical imaging lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which have refractive power and are sequentially arranged from an object side to an image side of the optical imaging lens assembly along an optical axis. The first lens and the third lens both have positive refractive power. The fifth lens has negative refractive power. 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<1.3.Type: GrantFiled: September 21, 2020Date of Patent: August 6, 2024Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventors: Jianke Wenren, Yuhao Wang, Fujian Dai, Liefeng Zhao
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Patent number: 12055687Abstract: The disclosure provides a camera lens assembly, which includes nine lenses, sequentially including from an object side to an image side: a first lens with a refractive power, an object-side surface thereof is a convex surface; a second lens with a refractive power; a third lens with a positive refractive power; a fourth lens with a refractive power; a fifth lens with a refractive power; a sixth lens with a refractive power; a seventh lens with a negative refractive power; an eighth lens with a refractive power; and a ninth lens with a refractive power; an on-axis distance TTL from an object-side surface of the first lens to an imaging surface of the camera lens assembly on the optical axis and an effective focal length f of the camera lens assembly satisfy TTL/f<1.1.Type: GrantFiled: May 28, 2021Date of Patent: August 6, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Yanping Li, Lingbo He, Fujian Dai, Liefeng Zhao
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Patent number: 12055688Abstract: The disclosure discloses 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 and a fifth lens with refractive power respectively, wherein TTL is a distance from an object-side surface of the first lens to an imaging surface of the optical imaging lens assembly 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 assembly, TTL and ImgH meet TTL/ImgH<1.5; and a sum fp of effective focal lengths of the lenses with positive refractive power in the first lens to the fifth lens and a sum fm of effective focal lengths of the lenses with negative refractive power in the first lens to the fifth lens meet ?19.0<fm/fp<?10.0.Type: GrantFiled: June 4, 2021Date of Patent: August 6, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Yanping Li, Lingbo He, Jianjun Li, Fujian Dai, Liefeng Zhao
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Patent number: 12055679Abstract: An optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, a first lens group having positive refractive power and including a first lens with refractive power; a second lens group, sequentially from the object side to the image side along the optical axis, including a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, each of which having refractive power; a plate glass; and a photosensitive element. At least one surface of at least one lens among the first to the sixth lenses is a non-rotationally symmetric surface. At least one of the first lens to the sixth lens is configured to be movable relative to the photosensitive element in the direction of the optical axis. A maximum optical distortion Distmax of the optical imaging lens assembly may satisfy: |Distmax|<5%.Type: GrantFiled: July 21, 2021Date of Patent: August 6, 2024Assignee: Zhejiang Sunny Optics Co., Ltd.Inventors: Liefeng Zhao, Lin Huang, Fujian Dai
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Patent number: 12055697Abstract: The disclosure provides a camera lens group, which sequentially includes, from an object side to an image side along an optical axis: a first lens group with a positive refractive power, sequentially including, along the optical axis, a first lens, a second lens and a third lens with refractive power respectively; and a second lens group with a negative refractive power, sequentially including, the optical axis, a fourth lens, a fifth lens, a sixth lens and a seventh lens with refractive power respectively, wherein a total effective focal length f of the camera lens group and an entrance pupil diameter (EPD) of the camera lens group meet f/EPD<1.4; and an effective focal length f1 of the first lens and a spacing distance T34 of the third lens and the fourth lens on the optical axis meet 3.0<f1/T34<5.0.Type: GrantFiled: May 11, 2021Date of Patent: August 6, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Yabin Hu, Jian Zhang, Liefeng Zhao, Fujian Dai
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Patent number: 12055685Abstract: The disclosure discloses an optical imaging lens, 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. The first lens has positive refractive power, the fourth lens has positive refractive power, and the seventh lens has negative refractive power. A total effective focal length f of the optical imaging lens and a maximum Field Of View (FOV) of the optical imaging lens meet f×tan(FOV/2)?5.5 mm. An effective focal length f4 of the fourth lens and an effective focal length f6 of the sixth lens meet 1.3?f4/f6<4.5.Type: GrantFiled: March 24, 2021Date of Patent: August 6, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Yi Zhang, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao
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Patent number: 12044827Abstract: 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: GrantFiled: January 13, 2021Date of Patent: July 23, 2024Assignee: Zhejiang Sunny Optics Co., LtdInventors: Yanping Li, Lingbo He, Jianjun Li, Fujian Dai, Liefeng Zhao
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Patent number: 12044834Abstract: 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: GrantFiled: April 13, 2023Date of Patent: July 23, 2024Assignee: Zhejiang Sunny Optical Co., LtdInventors: Fujian Dai, Kaiyuan Zhang, Liefeng Zhao
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Publication number: 20240241338Abstract: 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: ApplicationFiled: April 27, 2023Publication date: July 18, 2024Inventors: Xianchao SHI, Qian LI, Fang ZHANG, Fujian DAI, Liefeng ZHAO
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Patent number: 12038563Abstract: 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: GrantFiled: May 11, 2021Date of Patent: July 16, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Jiaying Zhang, Fujian Dai, Liefeng Zhao
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Patent number: 12032137Abstract: 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: GrantFiled: May 27, 2021Date of Patent: July 9, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Qi Wu, Fujian Dai, Liefeng Zhao
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Patent number: 12025781Abstract: 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: GrantFiled: November 17, 2021Date of Patent: July 2, 2024Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.Inventors: Yabin Hu, Liefeng Zhao, Fujian Dai
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Patent number: 12025774Abstract: 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: GrantFiled: September 29, 2020Date of Patent: July 2, 2024Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventors: Yabin Hu, Liefeng Zhao, Fujian Dai
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Patent number: 12019215Abstract: 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: GrantFiled: January 20, 2021Date of Patent: June 25, 2024Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventors: Xiaofang Wang, Kaiyuan Zhang, Fujian Dai, Liefeng Zhao