Patents by Inventor Saifeng LYU
Saifeng LYU 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: 11092770Abstract: A camera lens group is disclosed. The camera lens group includes, 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 having refractive powers. The second lens has a positive refractive power. An object-side surface of the second lens, an object-side surface of the third lens, and an object-side surface of the sixth lens are a convex surface. An image-side surface of the third lens, an image-side surface of the sixth lens, and an image-side surface of the seventh lens are a concave surface. A center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: CT4/CT5>1.5.Type: GrantFiled: February 12, 2019Date of Patent: August 17, 2021Inventors: Jianke Wenren, Ming Li, Saifeng Lyu, Lihui Ye
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Publication number: 20210239947Abstract: 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 and a concave image-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; a fifth lens having positive refractive power; a sixth lens having refractive power, a convex object-side surface and a concave image-side surface; and a seventh lens having refractive power and a concave object-side surface. Half of a maximum field-of-view HFOV of the optical imaging lens assembly and a total effective focal length f of the optical imaging lens assembly satisfy: tan(HFOV)*f ?4.34 mm.Type: ApplicationFiled: April 20, 2021Publication date: August 5, 2021Inventors: Xiaoting Geng, Saifeng Lyu, Tianxiang Xing, Long Li, Fujian Dai, Liefeng Zhao
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Patent number: 11067777Abstract: The present disclosure discloses an optical imaging system. The optical imaging system includes, sequentially from an object side to an image side, a first lens having a negative refractive power; a second lens having a refractive power; a third lens having a negative refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power; a sixth lens having a refractive power; and a seventh lens having a refractive power. There is an air spacing on an optical axis between any two adjacent lenses in the first to seventh lenses. An effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system satisfy: f/EPD?2.10. The effective focal length f of the optical imaging system and an effective focal length f1 of the first lens satisfy: f1/f>?3.Type: GrantFiled: February 12, 2019Date of Patent: July 20, 2021Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventors: Saifeng Lyu, Jianke Wenren, Ling Ding
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Patent number: 10996441Abstract: The present disclosure discloses an optical imaging lens assembly. The 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 in sequence from an object side to an image side along an optical axis. The first lens, the second lens, and the sixth lens each have a positive refractive power. The third lens and the seventh lens each have a negative refractive power. The fourth lens and the fifth lens each have a refractive power. Object-side surfaces of the first lens and the second lens are both convex surfaces. An image-side surface of the third lens is a concave surface. A total effective focal length f of the optical imaging lens assembly and a radius of curvature R13 of an object-side surface of the seventh lens satisfy: |f/R13|?2.5.Type: GrantFiled: December 21, 2018Date of Patent: May 4, 2021Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventor: Saifeng Lyu
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Publication number: 20210072506Abstract: The present disclosure discloses an optical imaging lens assembly, and the optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis: a first lens having positive refractive power, and at least one subsequent lens having refractive power. An F-number Fno1 of the optical imaging lens assembly satisfies Fno1>3.5, where an object distance is finite, and an F-number Fno2 of the optical imaging lens assembly satisfies Fno2?1.0, where the object distance is infinite.Type: ApplicationFiled: August 26, 2020Publication date: March 11, 2021Applicant: Zhejiang Sunny Optical Co., LtdInventors: Saifeng LYU, Fujian DAI, Liefeng ZHAO
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Publication number: 20210063699Abstract: The present disclosure discloses an optical imaging system. The optical imaging system satisfies: f/EPD?1.5; 0.3<T23*10/R4<1.8; ?0.6<f2/f4<?0.1; and TTL/ImgH<1.4, where f is an effective focal length of the optical imaging system, EPD is an entrance pupil diameter of the optical imaging system, T23 is a spaced interval between the second lens and the third lens along the optical axis, R4 a radius of curvature of an image-side surface of the second lens, f2 is an effective focal length of the second lens, f4 is an effective focal length of the fourth lens, TTL is a distance along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging system, and ImgH is half of a diagonal length of an effective pixel area on the imaging plane.Type: ApplicationFiled: August 11, 2020Publication date: March 4, 2021Applicant: Zhejiang Sunny Optical Co., Ltd.Inventors: Saifeng LYU, Mengna TANG, Fujian DAI, Liefeng ZHAO
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Publication number: 20210063698Abstract: 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 refractive power with a convex object-side surface; a second lens having positive refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having positive refractive power with a convex image-side surface; and a seventh lens having negative refractive power. An effective focal length f of the optical imaging system and a maximum field-of-view FOV of the optical imaging system satisfy f*tan(FOV/2)>4.0 mm. The effective focal length f of the optical imaging system and a radius of curvature R9 of an object-side surface of the fifth lens satisfy 0<f/R9<1.0.Type: ApplicationFiled: August 11, 2020Publication date: March 4, 2021Applicant: Zhejiang Sunny Optical Co., Ltd.Inventors: Saifeng LYU, Mengna TANG, Fujian DAI, Liefeng ZHAO
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Publication number: 20210048645Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the seven lens having refractive power. The first lens has positive refractive power, an object-side surface thereof is a convex surface, and an image-side surface thereof is a convex surface; the second lens has negative refractive power, an object-side surface thereof is a convex surface; and an object-side surface of the fourth lens is a concave surface. A distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly and a total effective focal length f of the optical imaging lens assembly satisfy TTL/f<1.Type: ApplicationFiled: September 2, 2020Publication date: February 18, 2021Inventors: Long LI, Saifeng LYU
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Patent number: 10921561Abstract: The present disclosure discloses 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 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 a positive refractive power. An image-side surface of the second lens and an image-side surface of the seventh lens are convex surfaces. 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?1.90.Type: GrantFiled: December 21, 2018Date of Patent: February 16, 2021Assignee: ZHEJIANG SUNNY OPTICAL CO., LTDInventors: Saifeng Lyu, Ming Li
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Publication number: 20210026112Abstract: The present disclosure discloses an optical imaging system which 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; a third lens having refractive power with an object-side surface being concave and an image-side surface being convex; a fourth lens having refractive power; a fifth lens having positive refractive power with an object-side surface being convex; a sixth lens having negative refractive power with an object-side surface being concave and an image-side surface being concave. An effective focal length f of the optical imaging system and half of a maximum field-of-view angle Semi-FOV of the optical imaging system may satisfy f*tan(Semi-FOV)>4.4 mm.Type: ApplicationFiled: July 21, 2020Publication date: January 28, 2021Applicant: Zhejiang Sunny Optical Co., Ltd.Inventors: Ling DING, Saifeng Lyu, Fujian Dai, Liefeng Zhao
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Publication number: 20210018728Abstract: 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, 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. Each of the first lens and the fourth lens has positive refractive power. The eighth lens has negative refractive power. An object-side surface of the third 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 concave surface, and an image-side surface thereof is a convex surface. A total effective focal length f of the optical imaging lens group, an effective focal length f2 of the second lens, and an effective focal length f3 of the third lens satisfy |f/f2|+|f/f3|<1.Type: ApplicationFiled: October 1, 2020Publication date: January 21, 2021Inventors: Long LI, Saifeng LYU
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Publication number: 20210018729Abstract: 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, wherein each of the first through the eighth lenses has refractive power. The first lens has positive refractive power. The third lens has positive refractive power, and each of an object-side surface and an image-side surface thereof is a convex surface. An object-side surface of the sixth lens is a convex surface. The eighth lens has negative refractive power, and an object-side surface thereof is a concave surface. A total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly may satisfy f/EPD?2.0.Type: ApplicationFiled: October 1, 2020Publication date: January 21, 2021Inventors: Long LI, Saifeng LYU
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Publication number: 20210011260Abstract: The present disclosure discloses a camera lens assembly. The camera lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, which all have refractive power and are sequentially arranged from an object side to an image side along an optical axis. The first lens and the sixth lens have negative refractive power; the third lens and the fifth lens have positive refractive power; at least one of the first lens to the sixth lens has a non-rotationally symmetric aspheric surface; and a maximum value TDT of TV distortion in an imaging range of the camera lens assembly satisfies: |TDT|?2.5%.Type: ApplicationFiled: September 29, 2020Publication date: January 14, 2021Inventors: Fujian DAI, Saifeng LYU, Liefeng ZHAO
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Publication number: 20210011257Abstract: 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, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, each of which has refractive power. An object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface; an image-side surface of the second lens is a concave surface; and an object-side surface of sixth lens is a concave surface. 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 group and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the optical imaging lens group satisfy TTL/ImgH?1.23.Type: ApplicationFiled: September 28, 2020Publication date: January 14, 2021Applicant: Zhejiang Sunny Optical Co., Ltd.Inventors: Saifeng LYU, Xiaohui ZHANG, Mengna TANG
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Publication number: 20210003828Abstract: 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 having refractive power. An object-side surface of the first lens is convex, and an image-side surface of the first lens is concave; an image-side surface of the second lens is concave; and an object-side surface of the sixth lens is convex. An effective focal length f1 of the first lens and an effective focal length f5 of the fifth lens satisfy 1?f5/f1?3.5. A distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy TTL/ImgH?1.3.Type: ApplicationFiled: September 22, 2020Publication date: January 7, 2021Inventors: Saifeng Lyu, Tianxiang Xing
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Publication number: 20210003821Abstract: 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 window member; 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; and at least one subsequent lens having a refractive power, wherein an entrance pupil diameter EPD of the optical imaging lens assembly and half of an effective aperture DTg of the window member at an object-side surface thereof satisfy: EPD/DTg>1.6, which makes the optical imaging lens assembly have the characteristics of high resolution and miniaturization. When the optical imaging lens assembly is installed on an electronic device, it can minimize the impact on the full-screen display.Type: ApplicationFiled: June 18, 2020Publication date: January 7, 2021Applicant: Zhejiang Sunny Optical Co., LtdInventors: Mengna TANG, Saifeng Lyu, Ling Ding, Fujian Dai, Liefeng Zhao
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Publication number: 20200393657Abstract: An optical imaging lens group includes, 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. The first lens has positive refractive power, and both an object-side surface and an image-side surface thereof are convex; the second lens has refractive power, and an object-side surface thereof is convex; the third lens has refractive power, and an object-side surface thereof is concave; the fourth lens has refractive power; the fifth lens has refractive power; the sixth lens has refractive power, and an object-side surface thereof is convex; and the seventh lens has negative refractive power. An edge thickness ET6 of the sixth lens and a center thickness CT6 of the sixth lens along the optical axis satisfy 0.2<ET6/CT6<0.9.Type: ApplicationFiled: September 1, 2020Publication date: December 17, 2020Inventors: Long LI, Saifeng LYU
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Publication number: 20200371312Abstract: The present disclosure discloses an optical imaging lens assembly, which includes sequentially from an object side to an image side along an optical axis, a first lens and at least one subsequent lens having refractive power. 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 a distance P along the optical axis from a to-be-captured object to the object-side surface of the first lens satisfy 0.6<TTL/P*10<1.8.Type: ApplicationFiled: August 13, 2020Publication date: November 26, 2020Inventors: Mengna TANG, Saifeng LYU
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Publication number: 20200233186Abstract: 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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens has a negative refractive power; each of the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens has a positive or a negative refractive power; an image-side surface of the third lens and an object-side surface of the sixth lens are concave; and the seventh lens has a negative refractive power, and an image-side surface thereof is concave. A combined focal length f56 of the fifth lens and the sixth lens and a combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens satisfy 2?f56/f1234<6.Type: ApplicationFiled: April 9, 2020Publication date: July 23, 2020Inventors: Saifeng Lyu, Ming Li
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Publication number: 20200233188Abstract: The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes, 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. The first lens has a positive refractive power, and an object-side surface thereof is a convex surface; the second lens has a negative refractive power, and an image-side surface thereof is a concave surface; each of the third lens, the fourth lens, the fifth lens and the sixth lens have a positive refractive power or a negative refractive power; the seventh lens has a negative refractive power, and an object-side surface thereof is a concave surface. A total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy f/f1?2.0.Type: ApplicationFiled: April 9, 2020Publication date: July 23, 2020Inventors: Saifeng Lyu, Ming Li