Patents by Inventor Cheng Ko

Cheng Ko 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).

  • Patent number: 11500179
    Abstract: A high-resolution imaging lens proofed against high-temperature instability includes a first lens with a negative power, a second lens with a negative power, a third lens with a positive power, a fourth lens with a negative power, a fifth lens with a positive power, and a sixth lens with a positive power. The first to the sixth lenses satisfy conditions of F1<0; 0.8>|F2/F6|>0.6, F2<0, F6>0; ?3>F4/F5>?2, and 2.0<F/#. Each of the first lens, the third lens, the fourth lens, and the fifth lens is made of glass, each of the second lens and the sixth lens is made of plastic.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: November 15, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yu-Chung Su, Chun-Cheng Ko
  • Patent number: 11502462
    Abstract: An extension cord for polyphase voltage conversion includes a socket body, a conductive cable and a polyphase circuit disposed in the socket body. The socket body has a hollow housing, and a four-phase power connective head is disposed at an end of the housing in order to supply power to the extension cord. A breaker having safety switch function and at least two power sockets providing voltages with different phases are disposed in the housing. An end of the conductive cable is electrically connectable with a four-phase power source. The other end of the conductive cable has a four-phase power plug electrically connectable with the four-phase power connective head of the socket body. The polyphase circuit includes three phase conductors, a neutral conductor and a ground conductor. The conductors are used to electrically connect with the four-phase power connective head, the breaker and the respective at least two power sockets.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: November 15, 2022
    Inventor: Po-Cheng Ko
  • Publication number: 20220265078
    Abstract: A device for installing curtain gliders is revealed. The device for installing curtain gliders is a positioning strip. A plurality of gliders are arranged at the positioning strip and then carried and mounted into a curtain track by the positioning strip. The positioning strip is provided with a plurality of mounting and positioning units each of which includes a main hole, two slots disposed on two ends of the main hole, and two locking pieces located between the two slots and the main hole. Thereby the glider with different designs can be inserted into the main hole and the locking pieces are abutting against the glider for positioning the glider. Installers can assemble the gliders quickly and conveniently by count marks on the positioning strip.
    Type: Application
    Filed: February 19, 2021
    Publication date: August 25, 2022
    Inventors: HSIU-MEI HSU, HOU-CHENG KO
  • Publication number: 20220252480
    Abstract: A test chart which is used in a method for testing resolution of a wide-angle lens includes a test area, first patterns, and second patterns. The test area has a center point, and first and second diagonal lines intersecting at the center point. The first and second patterns are arranged around the center point and located on the first and second diagonal lines. Each of the second patterns comprises first to fourth points successively connected by curves with curvature positively related to a distortion value in relation to the wide-angle lens under test. By designing the test area, the first patterns, and the second patterns, a deformation of the first and second patterns in a captured image can be eliminated. The method for testing resolution using the test chart is also disclosed.
    Type: Application
    Filed: January 26, 2022
    Publication date: August 11, 2022
    Inventors: Po-Chou Chen, Chun-Cheng Ko
  • Patent number: 11409084
    Abstract: A lens module includes a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, and an imaging surface, arranged in that sequence from an object side to an image side. The lens module uses infrared light which has a wavelength ranging from 920 to 970 nm, the lens module satisfies the following conditions: 0.0002<|1/F1|<0.01; D/TTL>1.1; CT4/ET4<1.8; F1 denotes a focal length of the first lens, D denotes a diameter of a largest imaging circle of the lens module, TTL denotes a distance between an object side surface of the first lens to the imaging surface, CT4 denotes a central thickness of the fourth lens, ET4 denotes an edge thickness of the fourth lens.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: August 9, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yu-Chung Su, Chun-Cheng Ko
  • Patent number: 11353776
    Abstract: A lens module includes a lens barrel, a lens group, and a soma. The soma includes a first end surface facing an object side and a second end surface facing an image side. An end point of the lens group closest to the object side is defined as an origin. An angle formed by a line connecting the origin to a point on the first end surface closest to an optical axis and the optical axis is defined as a first angle ?. An angle formed by a line connecting the origin to a point on the second end surface closest to the optical axis and the optical axis is defined as a second angle ?. The first angle ? and the second angle ? satisfy the following relationship: ?>34.5° and ?-?<0.4°.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: June 7, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ya-Lan Feng, Chun-Cheng Ko
  • Patent number: 11347029
    Abstract: A camera lens or lens group of reduced overall length includes a first lens with positive power, a second lens with negative power, a third lens with positive power, and an imaging element. The first, object side, lens includes a first surface and a second surface, the second lens includes a third surface and a fourth surface, and the third lens includes a fifth surface and a sixth surface. The camera lens satisfies conditions of 1.00<D/TTL<1.25; 0.85<|F1|/|F|<0.95; 3.85<|F2|/|F|<4.15; and 21.50<|F3|/|F|<27.50. D is the maximum imaging circle diameter on the imaging surface, TTL is the distance from the center point to the imaging side of the object-side surface of the first lens, F is the total focal length of the camera lens, F1 is the focal length of the first lens, F2 is the focal length of the second lens, and F3 is the focal length of the third lens.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: May 31, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ya-Lan Feng, Chun-Cheng Ko
  • Patent number: 11334273
    Abstract: A valid data merging method, a memory storage device and a memory control circuit unit are provided. The method includes: collecting a first valid data in a source unit according to a first logical-to-physical address mapping table recorded in a candidate information, and determining whether a first data amount of the first valid data is same as a second data amount of a valid data corresponding to a valid count of the source unit; in response to determining that they are the same, copying the first valid data to a target unit; and in response to determining that they are not the same, obtaining one or more second logical-to-physical address mapping table according to a management information of the source unit to collect a second valid data in the source unit, and copying the second valid data to the target unit.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: May 17, 2022
    Assignee: PHISON ELECTRONICS CORP.
    Inventor: Bo-Cheng Ko
  • Patent number: 11322222
    Abstract: A memory device includes at least one first register, a memory circuit, an analyzing circuit, and a control circuit. The memory circuit includes a plurality of bit cells. The analyzing circuit is configured to perform an analyzing process on the bit cells to generate an analyzing result. If the analyzing result indicates that a first bit cell of the bit cells fails, the control circuit establishes a repair process by controlling data to be written into the at least one first register and controlling the data to be read out from the at least one first register.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: May 3, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventor: Hsin-Cheng Ko
  • Publication number: 20220121007
    Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are sequentially arranged from an object side to an image side. The lens assembly satisfies the following relationships: |PVS1-S6|?0.3; |PVS7?PVS8|?|PVS11?PVS12|?1; |PVS1/PVS12|?3; PV is an error between an actual surface shape and a standard surface shape of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens. PVSn is an error of crests and troughs between an actual surface shape and a standard surface shape of the first surface to an nth surface, and n is a positive integer less than 13.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 21, 2022
    Inventors: YU-CHIAO HUANG, CHUN-CHENG KO
  • Patent number: 11298715
    Abstract: A coating mask for bearing and covering a portion of a to-be-plated component includes at least one bearing unit. Each bearing unit includes a first bearing portion, a second bearing portion, and at least two ribbed plates. An annular groove is defined between the first bearing portion and the second bearing portion. The at least two ribbed plates are formed in the annular groove. Each of the at least two ribbed plates includes a first ribbed portion and a second ribbed portion connected to the first ribbed portion. The first ribbed portion is connected to the second bearing portion; the second ribbed portion is connected to the first bearing portion. An included angle ?1 is defined by the first ribbed portion and the second ribbed portion, and ?1 is an obtuse angle. The disclosure also relates to a coating device.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: April 12, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ya-Lan Feng, Chun-Cheng Ko
  • Publication number: 20220043231
    Abstract: An optical lens includes a first transparent portion and a first flange portion arranged around the first transparent portion. The first transparent portion and the first flange portion are symmetrical about an optical axis of the optical lens. The first flange portion includes a connecting portion and a peripheral portion. The connecting portion is coupled between the first transparent portion and the peripheral portion. An object side of the first transparent portion includes a first transparent surface. The connecting portion includes a connecting surface coupled to the first transparent surface. The connecting surface is a textured surface.
    Type: Application
    Filed: December 28, 2020
    Publication date: February 10, 2022
    Inventors: PO-CHOU CHEN, CHUN-CHENG KO
  • Publication number: 20220043233
    Abstract: A fixing ring for a lens module includes a first end surface, a second end surface opposite the first end surface, and a through hole defined through the first end surface and the second end surface. A protrusion is provided on an inner wall of the through hole. The protrusion includes a first inclined surface, a second inclined surface, and a connecting surface. The connecting surface is coupled between the first inclined surface and the second inclined surface. A side of the first inclined surface away from the connecting surface is coupled to the first end surface. A side of the second inclined surface away from the connecting surface is coupled to the second end surface. A light absorbing layer is provided on the connecting surface.
    Type: Application
    Filed: December 1, 2020
    Publication date: February 10, 2022
    Inventors: JEN-HUNG HUANG, CHUN-CHENG KO
  • Publication number: 20220043325
    Abstract: A light-shielding sheet includes a base defining a first through hole and a second through hole. The first through hole and the second through hole are arranged coaxially in the base. A diameter of the first through hole is smaller than a diameter of the second through hole. The base is provided with a light-shielding coating covering an inner wall of the first through hole and the second through hole. When an incident light angle ? is between 45° and 55°, a following relationship is satisfied: 0.01?W?0.02; 3?D?3.5; 0.0122?W/sin??0.0283. W denotes a thickness of the base W, and D denotes the diameter of the first through hole.
    Type: Application
    Filed: December 1, 2020
    Publication date: February 10, 2022
    Inventors: JEN-HUNG HUANG, CHUN-CHENG KO
  • Publication number: 20220043189
    Abstract: An optical lens includes a transparent portion and a flange portion surrounding the transparent portion. The flange portion includes a connecting portion, a transition portion, and an edge portion. The connecting portion is coupled between the transparent portion and the transition portion. The transition portion is coupled between the connecting portion and the edge portion. The flange portion defines a V-shaped groove. The V-shaped groove surrounds the transparent portion.
    Type: Application
    Filed: December 11, 2020
    Publication date: February 10, 2022
    Inventors: PO-CHOU CHEN, CHUN-CHENG KO
  • Publication number: 20220044388
    Abstract: A method for intelligently judging stray light includes obtaining pictures with stray light and an incident light angle corresponding to each of the pictures, determining a stray light judgment mechanism corresponding to each picture according to the incident light angle, determining whether each of the pictures meets an acceptance condition of the corresponding stray light judgment mechanism and obtaining a judgment result, and determining whether the product to be tested is a qualified product based on the judgment result of the pictures.
    Type: Application
    Filed: December 28, 2020
    Publication date: February 10, 2022
    Inventors: JEN-HUNG HUANG, CHUN-CHENG KO
  • Patent number: 11243372
    Abstract: A spacer for fixing a distance between adjacent lenses of a lens module carries an internal shape reducing the incidence of stray reflected light. The spacer defines a through hole to allow light to pass and a prismatic protrusion is disposed on a wall of the through hole. A first inclined surface of the prismatic protrusion is connected to an end surface of spacer and to a second inclined surface of the prismatic protrusion. The second inclined surface is connected to other end surface of spacer. Acute angle ?1 is formed between the first inclined surface and end surface, and acute angle ?2 is formed between the second inclined surface and other end surface. Relationship between the acute angles are ?1>?2, and 60°??1+?2?80°. A lens module using such a spacer is also provided.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: February 8, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ya-Lan Feng, Chun-Cheng Ko
  • Publication number: 20220019054
    Abstract: An optical lens includes seven lenses sequentially arranged along an optical axis from an object side to an image side. A fourth lens includes a seventh surface facing the object side and an eighth surface facing the image side. Each of the seventh surface and the eighth surface includes an inflection point. The optical lens satisfies the following conditional formulas: ?0.48<tan(EFL4*log(Slope_L42))<?0.38;??conditional formula 1: 1 mm<Infp_L41_y<1.05 mm;??conditional formula 2: 0.58 mm<Infp_L42_y<0.69 mm;??condition 3: 1<(123{circumflex over (?)}T4)/(456{circumflex over (?)}Slope_L41)<1.67.
    Type: Application
    Filed: November 10, 2020
    Publication date: January 20, 2022
    Inventors: CHUN-CHENG KO, YI-TING LIN
  • Publication number: 20220011476
    Abstract: An optical lens includes a lens barrel, a first lens, and an aperture. The lens barrel includes a first end and a second end. A receiving space is provided between the first end and the second end. The first end is provided with a light inlet opening communicating with the receiving space. The second end is provided with a light outlet opening communicating with the receiving space. A first light enters through the light inlet opening. A second light exits through the light outlet opening. The first lens is located in the receiving space and configured to receive and transmit at least a portion of the first light. The aperture is located in the receiving space and fixedly arranged on a side of the first lens facing away from the second end. The aperture is used to adjust an amount of the first light incident into the lens barrel.
    Type: Application
    Filed: November 11, 2020
    Publication date: January 13, 2022
    Inventors: PO-CHOU CHEN, CHUN-CHENG KO
  • Publication number: 20210396967
    Abstract: An optical lens made from plastic materials which is able to gather more light to register on a high-resolution image sensor of an image-capturing device includes first to seventh lenses. The first to seventh lenses of the optical lens meets conditions of composite formula: 5.09<(EFL1/EFL2)*(EFL3/EFL4)*(EFL5/EFL6)*EFL7<?4.92; 1.1<(EFL1+EFL2+EFL3)/EFL4<1.3; ?0.4<(EFL5+EFL6+EFL7)/EFL4<?0.3; 0.75<(T1{circumflex over (?)}2+T5{circumflex over (?)}2){circumflex over (?)}0.5<0.85. EFL1, EFL2, EFL3, EFL4, EFL5, EFL6, and EFL7 are respective focal lengths of the first to seventh lenses, and T1, T5 are thicknesses of the first lens and the fifth lens.
    Type: Application
    Filed: April 23, 2021
    Publication date: December 23, 2021
    Inventors: YI-TING LIN, CHUN-CHENG KO