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).

  • Publication number: 20220146793
    Abstract: 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, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens with refractive power respectively. There is an air space between any two adjacent lenses. The third lens has positive refractive power. An object-side surface of the fourth lens is a concave surface, while an image-side surface is a concave surface. ImgH is a half of a diagonal length of an effective pixel region on an imaging surface, T89 is a spacing distance of the eighth lens and the ninth lens on the optical axis, ImgH and T89 meet 6.0<ImgH/T89<7.0.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 12, 2022
    Inventors: Yu ZHOU, Yu TANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220146787
    Abstract: The disclosure provides an optical imaging lens group, 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, an object-side surface thereof being a convex surface; a second lens with a refractive power; a third lens with a negative refractive power; a fourth lens with a refractive power, an object-side surface thereof being a convex surface, while an image-side surface being a concave surface; a fifth lens with a positive refractive power; and a sixth lens with a negative refractive power, an image-side surface thereof being a concave surface; wherein ? is a half of a field of view of the optical imaging lens group, and f5 is an effective focal length of the fifth lens, f5 and ? meet 0.50 mm<f5×(tan ?)2<1.00 mm.
    Type: Application
    Filed: May 22, 2020
    Publication date: May 12, 2022
    Inventors: Yunbing JI, Dawei TANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220146794
    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 negative refractive power, an object-side surface thereof is a concave surface, an image-side surface thereof is a convex surface; a second lens with a refractive power; a diaphragm; a third lens with a refractive power, an object-side surface thereof is a convex surface, an image-side surface thereof is a convex surface; a fourth lens with a refractive power; and a fifth lens with a refractive power. Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and Semi-FOV meets Semi-FOV?55°.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 12, 2022
    Inventors: Jian WANG, Lingbo HE, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220137365
    Abstract: 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 concave 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 positive refractive power and a convex image-side surface; and a sixth lens having negative refractive power, a convex object-side surface and a concave image-side surface. Half of a field-of-view Semi-FOV of the camera lens group and half of a diagonal length ImgH of an effective pixel area on an imaging plane satisfy: 10.00 mm<tan2(Semi-FOV)*ImgH<23.50 mm. A maximum distortion of the camera lens group is less than 3.50%.
    Type: Application
    Filed: March 12, 2021
    Publication date: May 5, 2022
    Applicant: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Jin ZHOU, Jianke WENREN, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220137368
    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, a seventh lens and an eighth lens with refractive power respectively. Each of the fourth lens, the fifth lens and the sixth lens has negative refractive power. A total effective focal length f of the optical imaging lens assembly satisfies f>7.5 mm. A curvature radius R11 of an object-side surface of the sixth lens, a curvature radius R12 of an image-side surface of the sixth lens, a refractive index N6 of the sixth lens and an abbe number V6 of the sixth lens satisfy 1.0 mm?1<V6/(R11+R12×N6)<2.0 mm?1.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 5, 2022
    Inventors: Yikun ZHAO, Yu ZHOU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220137366
    Abstract: An optical imaging lens assembly including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially from an object side to an image side along an optical axis is provided. The first lens has a negative refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a convex surface; and the third lens has a negative refractive power. The distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis and a half ImgH of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens assembly satisfy: TTL/ImgH?1.4.
    Type: Application
    Filed: August 16, 2021
    Publication date: May 5, 2022
    Inventors: Fujian Dai, Wuchao Xu, Liefeng Zhao
  • Publication number: 20220137364
    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 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: Application
    Filed: March 12, 2021
    Publication date: May 5, 2022
    Applicant: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Long LI, Liefeng ZHAO, Fujian DAI
  • Publication number: 20220137367
    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 negative refractive power; a third lens with a positive refractive power, an object-side surface thereof being a convex surface; a fourth lens with a refractive power; a fifth lens with a refractive power, an object-side surface thereof being a concave surface, while an image-side surface being a convex surface; a sixth lens with a refractive power; a seventh lens with a refractive power; an eighth lens with a refractive power; and a ninth lens with a refractive power. ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, and ImgH meets 6.5 mm?ImgH?7.5 mm.
    Type: Application
    Filed: October 25, 2021
    Publication date: May 5, 2022
    Inventors: Yu Zhou, Yu Tang, Fujian Dai, Liefeng Zhao
  • Publication number: 20220137337
    Abstract: 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: Application
    Filed: October 25, 2021
    Publication date: May 5, 2022
    Applicant: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Jiacheng YAO, Saifeng LV, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220128800
    Abstract: The disclosure provides an optical imaging system, which has a first optical axis, a second optical axis perpendicular to the first optical axis and a third optical axis perpendicular to the second optical axis, the first optical axis is parallel to the third optical axis, the optical imaging system includes: a first imaging lens group, including a first refraction optical element that deflects light entering along a direction of the first optical axis to be propagated along a direction of the second optical axis; a second imaging lens group, sequentially including from an object side to an image side along the second optical axis a first lens to a seventh lens with refractive power; a third imaging lens group, including a second refraction optical element that deflects light entering along the direction of the second optical axis to be propagated along a direction of the third optical axis.
    Type: Application
    Filed: October 21, 2021
    Publication date: April 28, 2022
    Inventors: Jiaying Zhang, Fujian Dai, Liefeng Zhao
  • Publication number: 20220113516
    Abstract: The disclosure provides an optical imaging lens group. The optical imaging lens group sequentially includes from an object side to an image side along an optical axis of the optical imaging lens group: a first lens with a positive refractive power; a second lens with a refractive power, an image-side surface of the second lens is a concave surface; a third lens with a refractive power; a fourth lens with a refractive power, an image-side surface of the fourth lens is a concave surface; a fifth lens with a refractive power; a sixth lens with a refractive power, an image-side surface of the sixth lens is a concave surface; and a seventh lens with a negative refractive power. A maximum field of view FOV of the optical imaging lens group and an effective focal length f of the optical imaging lens group satisfy tan(FOV/2)*f>5 mm.
    Type: Application
    Filed: July 7, 2021
    Publication date: April 14, 2022
    Inventors: Yanping LI, Lingbo HE, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220113517
    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 refractive power; a sixth lens with a positive refractive power; and a seventh lens with a refractive power; Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and an effective focal length f of the optical imaging lens assembly and Semi-FOV satisfy f*tan(Semi-FOV)?5.0 mm; a curvature radius R11 of an object-side surface of the sixth lens, a curvature radius R12 of an image-side surface of the sixth lens and the effective focal length f of the optical imaging lens assembly satisfy 5.0<f/R11+f/R12<7.0.
    Type: Application
    Filed: October 13, 2021
    Publication date: April 14, 2022
    Inventors: Yi ZHANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220099925
    Abstract: 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: Application
    Filed: October 10, 2019
    Publication date: March 31, 2022
    Inventors: Jianke WENREN, Yuhao WANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220091369
    Abstract: The disclosure provides a camera lens group, sequentially including, from an object side to an image side along an optical axis: a first lens with a refractive power, a second lens with a negative refractive power and an image-side surface thereof being concave, a third lens with a positive refractive power, a fourth lens with a positive refractive power and an image-side surface thereof being convex, and a fifth lens with a negative refractive power, wherein an air space is provided between any two adjacent lenses from the first lens to the fifth lens, and at least one lens from the first lens to the fifth lens is provided with an aspheric surface which is in non-rotational symmetry. An effective focal length fx, in an X-axis direction and an effective focal length fy, in a Y-axis direction, of the camera lens group satisfy 0.90<fx/fy<1.25.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 24, 2022
    Inventors: Xusen ZHONG, Saifeng LYU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220082802
    Abstract: 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 with a positive refractive power, a second lens with a positive refractive power, a third lens with a negative refractive power, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens with a positive refractive power, and a tenth lens with a negative refractive power, wherein a spacing distance TTL from an object-side surface of the first lens to an imaging surface of the optical imaging lens assembly on the optical axis and an Entrance Pupil Diameter (EPD) of the optical imaging lens assembly meet TTL/EPD<2.0.
    Type: Application
    Filed: August 12, 2021
    Publication date: March 17, 2022
    Inventors: Jia LU, Binqing WANG, Meng YANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220082803
    Abstract: The disclosure provide 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, a seventh lens, an eighth lens, a ninth lens and a tenth lens having refractive powers respectively; wherein the first lens, the third lens and the ninth lens have positive refractive powers respectively; the second lens and the tenth lens have negative refractive powers respectively; and f is a total effective focal length of the optical imaging lens assembly, and EPD is an entrance pupil diameter of the optical imaging lens assembly, f and EPD satisfy: f/EPD<1.5.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 17, 2022
    Inventors: Jia LU, Binqing WANG, Meng YANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220075162
    Abstract: The disclosure provides a combined zoom dual-camera lens assembly, which includes a first lens group and a second lens group, wherein a field of view of the second lens group is larger than a field of view of the first lens group, and a thickness of the second lens group is smaller than a thickness of the first lens group; and a total effective focal length fT of the first lens group and a total effective focal length fW of the second lens group meet fT/fW>9.00.
    Type: Application
    Filed: May 8, 2020
    Publication date: March 10, 2022
    Inventors: Yi ZHANG, Kaiyuan ZHANG, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220066171
    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 having refractive power, a convex object-side surface and a concave image-side surface; a second lens having positive refractive power, a convex object-side surface and a concave image-side surface; a third lens having negative refractive power, a concave object-side surface and a concave image-side surface; a fourth lens having positive refractive power, a convex object-side surface and a concave image-side surface; a fifth lens having refractive power; and a sixth lens having refractive power, a convex object-side surface and a concave image-side surface. An F number Fno of the camera lens group satisfies: Fno?1.45.
    Type: Application
    Filed: March 5, 2021
    Publication date: March 3, 2022
    Inventors: Long Li, Fujian Dai, Liefeng Zhao
  • Publication number: 20220066184
    Abstract: The disclosure provides a zoom lens assembly, which sequentially includes from an object side to an image side along an optical axis: a first lens group; a second lens group with a positive refractive power, spaced from the first lens group by a first air space and movable on the optical axis; a third lens group with a positive refractive power, spaced from the second lens group by a second air space and movable on the optical axis; and a fourth lens group, spaced from the third lens group by a third air space; wherein a Total Track Length (TTL) of the zoom lens assembly and a difference ?f between an effective focal length of the zoom lens assembly at a wide end and an effective focal length of the zoom lens assembly at a tele end satisfy 2.5<TTL/|?f|<4.0.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 3, 2022
    Inventors: Qian ZHANG, Yabin HU, Fujian DAI, Liefeng ZHAO
  • Publication number: 20220066183
    Abstract: Disclosed herein is an optical imaging lens group, including, in order from an object side to an image side along an optical axis: a first lens group having a refractive power, in which an image side surface of a lens closest to an imaging side is concave; a second and a third lens group having a refractive power; and a fourth lens group having a negative refractive power, in which an image side surface of a lens closest to the imaging side is concave and includes at least one inflection point, wherein the first lens group is a fixed group, and the second, third and fourth lens groups move on the optical axis to realize continuous zoom from a wide-angle end to a telephoto end; and an on-axis distance TTL and an effective focal length ft of the optical imaging lens group at the telephoto end satisfy: 0.8<TTL/ft<1.5.
    Type: Application
    Filed: August 2, 2021
    Publication date: March 3, 2022
    Applicant: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Yabin HU, Fujian DAI, Liefeng ZHAO