Patents by Inventor Fan Leuk Lai

Fan Leuk Lai 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: 20230062423
    Abstract: To align an optical module to an image sensor module comprising at least an image sensor, a test image is received with a reference optical element along a first reference optical path, before reflecting the test image along a second reference optical path with the reference optical element towards the image sensor module. An alignment orientation of the image sensor module is first corrected with respect to the reference optical element in order to receive the test image over the second reference optical path onto the image sensor. The reference optical element is subsequently replaced with the optical module. Next, an orientation of the optical module is manipulated such that the second optical path coincides with the second reference optical path so as to optically align the optical module with the image sensor module, before the optical module is finally attached to the image sensor module.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 2, 2023
    Inventors: Man Yip LEE, Fan Leuk LAI, Po Lam AU
  • Patent number: 11460713
    Abstract: A lens assembly is separated into a first lens module including at least one lens element and a second lens module including at least one other lens element during alignment of its lens elements. Coarse alignment is conducted by aligning an optical axis of at least one lens element within the first lens module with an optical axis of at least one lens element within the second lens module. For conducting fine alignment, an image sensor views a test chart while the first and second lens modules are positioned between the test chart and the image sensor. Image quality indices are obtained from the image sensor of the test chart at different relative alignments between the first and second lens modules, before the first lens module is fixed to the second lens module at a relative alignment therebetween where the image quality indices are optimized.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: October 4, 2022
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Po Lam Au, Liancheng Yang, Chun Ting Tang, Fan Leuk Lai, Chi Piu Wong
  • Publication number: 20220108901
    Abstract: A detape apparatus has a support unit with a deck surface for supporting a tape carrier. The deck surface defines a support plane on which the tape carrier is supportable, and a conveyor is configured to move the tape carrier in a conveyance direction along the deck surface. During a detape process, a receiving segment of a first urging element is movable to a first detape position next to a first side of the tape carrier, while a second urging element is movable to a second detape position abutting the tape carrier on an opposite side of the tape carrier to thereby push the tape carrier out of the support plane to separate at least one electronic component from the tape carrier. The receiving segment may then receive the at least one electric component which is thus separated from the tape carrier.
    Type: Application
    Filed: October 7, 2020
    Publication date: April 7, 2022
    Inventors: Po Lam AU, Chi Piu WONG, Kin Chiu YIP, Siu Yin SO, Fan Leuk LAI
  • Patent number: 11283978
    Abstract: Before fixing first and second lens modules to an image sensor to form an assembled camera module, the first lens module is held while electrical signals are provided to a first lens element comprised in the first lens module to drive the first lens element to move. An incident light is received along a first optical path and a reflective surface of the first lens element projects the incident light along a second optical path perpendicular to the first optical path such that the incident light is projected through the second lens module along the second optical path onto the image sensor. The first lens module and first lens element are moved relative to the image sensor until the reflective surface forms an inclination angle of 45 degrees with respect to the incident light, so that the incident light is projected normally onto an image plane of the image sensor.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: March 22, 2022
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Man Yip Lee, Fan Leuk Lai, Po Lam Au
  • Publication number: 20210356758
    Abstract: A lens assembly is separated into a first lens module including at least one lens element and a second lens module including at least one other lens element during alignment of its lens elements. Coarse alignment is conducted by aligning an optical axis of at least one lens element within the first lens module with an optical axis of at least one lens element within the second lens module. For conducting fine alignment, an image sensor views a test chart with while the first and second lens modules are positioned between the test chart and the image sensor. Image quality indices are obtained from the image sensor of the test chart at different relative alignments between the first and second lens modules, before the first lens module is fixed to the second lens module at a relative alignment therebetween where the image quality indices are optimized.
    Type: Application
    Filed: May 13, 2020
    Publication date: November 18, 2021
    Inventors: Po Lam AU, Liancheng YANG, Chun Ting TANG, Fan Leuk LAI, Chi Piu WONG
  • Patent number: 11070709
    Abstract: A method for aligning an image sensor relative to a lens module, the method comprising the steps of: receiving a test image along a first optical path with the lens module and projecting the test image along a second optical path transverse to the first optical path with the lens module; manipulating an orientation of the lens module with respect to the image sensor to project the test image along the second optical path onto the image sensor; using the test image received by the image sensor along the second optical path to determine a corrected orientation of the lens module with respect to the image sensor, so as to align the lens module with respect to the image sensor; and thereafter fixing the aligned lens module to the image sensor.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: July 20, 2021
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Man Yip Lee, Fan Leuk Lai, Po Lam Au
  • Patent number: 11012598
    Abstract: An apparatus for aligning a lens module with an image sensor to form a camera module includes a chart holder, a positioning unit and a reflective elements holder assembly. In use, the chart holder holds a test chart having a region of interest (ROI), the positioning unit holds the lens module and the image sensor, and the reflective elements holder assembly holds multiple reflective elements between the chart holder and the positioning unit. A first optical path from the ROI is directed to a first position on the image sensor. Second optical paths from the ROI are reflected by the reflective elements to respective second positions on the image sensor, the second positions being spaced from the first position. The images captured by the image sensor (arising from the aforementioned optical paths) are analysed and the positioning unit aligns the lens module with the image sensor based on such analysis.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: May 18, 2021
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Koon Sung Yeung, Po Lam Au, Fan Leuk Lai, Chi Piu Wong, Kwong Sik Chan
  • Publication number: 20210058536
    Abstract: An apparatus for aligning a lens module with an image sensor to form a camera module includes a chart holder, a positioning unit and a reflective elements holder assembly. In use, the chart holder holds a test chart having a region of interest (ROI), the positioning unit holds the lens module and the image sensor, and the reflective elements holder assembly holds multiple reflective elements between the chart holder and the positioning unit. A first optical path from the ROI is directed to a first position on the image sensor. Second optical paths from the ROI are reflected by the reflective elements to respective second positions on the image sensor, the second positions being spaced from the first position. The images captured by the image sensor (arising from the aforementioned optical paths) are analysed and the positioning unit aligns the lens module with the image sensor based on such analysis.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 25, 2021
    Inventors: Koon Sung YEUNG, Po Lam AU, Fan Leuk LAI, Chi Piu WONG, Kwong Sik CHAN
  • Publication number: 20200329181
    Abstract: A method for aligning an image sensor relative to a lens module, the method comprising the steps of: receiving a test image along a first optical path with the lens module and projecting the test image along a second optical path transverse to the first optical path with the lens module; manipulating an orientation of the lens module with respect to the image sensor to project the test image along the second optical path onto the image sensor; using the test image received by the image sensor along the second optical path to determine a corrected orientation of the lens module with respect to the image sensor, so as to align the lens module with respect to the image sensor; and thereafter fixing the aligned lens module to the image sensor.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 15, 2020
    Inventors: Man Yip LEE, Fan Leuk LAI, Po Lam AU
  • Patent number: 10187636
    Abstract: For aligning an image sensor relative to a lens module prior to fixing the image sensor to the lens module, an exposure of the image sensor is turned on and the image sensor is moved to different distances relative to the lens module. At certain predetermined distances between the image sensor and the lens module, a calibration pattern is illuminated and two or more pictures of the calibration pattern which is focused through the lens module are captured with the image sensor to produce at least two pictures of the calibration pattern captured at different distances, the at least two pictures being superimposed onto a calibration image. The exposure of the image sensor is then turned off and the pictures of the calibration pattern are analyzed for determining an alignment between the lens module and the image sensor.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 22, 2019
    Assignee: ASM TECHNOLOGY SINGAPORE PTE LTD
    Inventors: Chi Shing Wong, Fan Leuk Lai, Po Lam Au, Jiangwen Deng, Wing Hong Leung
  • Publication number: 20170201744
    Abstract: For aligning an image sensor relative to a lens module prior to fixing the image sensor to the lens module, an exposure of the image sensor is turned on and the image sensor is moved to different distances relative to the lens module. At certain predetermined distances between the image sensor and the lens module, a calibration pattern is illuminated and two or more pictures of the calibration pattern which is focused through the lens module are captured with the image sensor to produce at least two pictures of the calibration pattern captured at different distances, the at least two pictures being superimposed onto a calibration image. The exposure of the image sensor is then turned off and the pictures of the calibration pattern are analyzed for determining an alignment between the lens module and the image sensor.
    Type: Application
    Filed: January 8, 2016
    Publication date: July 13, 2017
    Inventors: Chi Shing Wong, Fan Leuk Lai, Po Lam Au, Jiangwen Deng, Wing Hong Leung