Patents by Inventor Kam Chiu LAU

Kam Chiu LAU 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: 20240065624
    Abstract: A hand temperature monitoring device includes at least one sensing array composed of a flexible printed circuit board (110), temperature sensors (120), p-type metal oxide semiconductor field-effect transistors (MOSFETs) (130), polymer films (140) and carbon fiber boards (150). The temperature sensors (120) are disposed on a first side (112) of the flexible printed circuit board (110). The p-type MOSFETs (130) are disposed on a second side (114) of the flexible printed circuit board (110) opposing to the temperature sensors (120), wherein each of the p-type MOSFETs (130) is electrically connected to one of the temperature sensors (120). The polymer film (140) encapsulates each of the temperature sensors (120) and the p-type MOSFETs (130) respectively. The carbon fiber board (150) is positioned over the polymer film and spaced apart from the polymer film (140).
    Type: Application
    Filed: August 1, 2022
    Publication date: February 29, 2024
    Inventor: Kam Chiu LAU
  • Patent number: 10895450
    Abstract: A system is provided for gathering information and data on the surface characteristics of an object includes a projector, a table, a first camera and a second camera. The projector is suspended above the table and arranged to project a random pattern of optical indicators onto the table. The optical indicators can be dots, lines, or other such indicators. The table is arranged to hold the object to be inspected. The first camera is positioned above and to one side of the table and angled toward the table. The second camera is positioned above and to opposite side of the table and angled toward the table. The first and second cameras are arranged to capture images of the optical indicators projected onto the object. The system is further arranged to gather information and data from the captured images and determine the surface characteristics of the object from said gathered information and data.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: January 19, 2021
    Inventors: Kam Chiu Lau, Guangkun Li
  • Patent number: 10837756
    Abstract: A optical target assembly is disclosed herein. The optical target assembly is movable about orthogonal pitch, yaw and roll axes and includes a reflector, a pitch and yaw angular sensor assembly, and a roll sensor assembly. The reflector is configured to engage a source of laser light. The pitch and yaw angular sensor includes a laser light sensor and an angle detection sensor. The pitch and yaw angular sensor assembly is configured to measure 360 degrees of motion about the pitch and the yaw axes. The roll sensor assembly is configured to measure 360 degrees of motion about the roll axis. The reflector can include an aperture configured to permit a portion of laser light incident on the reflector to pass through the reflector and onto the laser light sensor. The roll sensor assembly can include a roll angle sensor and a roll level sensor coupled to a two-dimensional pendulum.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: November 17, 2020
    Assignee: Automated Precision, Inc.
    Inventor: Kam Chiu Lau
  • Patent number: 10436569
    Abstract: Disclosed herein are interferometric measurement systems and methods. In one exemplary embodiment an interferometric measuring system for measuring the distance to or displacement of an object includes: a light source; an interferometer with a measuring arm and a reference arm; a dispersive medium; and a detector. The interferometer is disposed between the light source and the object. The dispersive medium is arranged to unbalance the dispersion between the measurement arm and the reference arm. The detector is arranged to detect spectrum interference from the interferometer. In one example, the dispersive medium is a chirped fiber Bragg grating. In another example, the dispersive medium is a highly dispersive optical fiber. In one example, the light source is a broadband light source, and the detector includes a spectrometer. In another example, the light source is a wavelength swept laser, and the detector includes a photodetector or a balanced photodetector.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: October 8, 2019
    Assignee: AP Robotics, LLC
    Inventors: Kam Chiu Lau, Yongwoo Park
  • Publication number: 20190128666
    Abstract: A system is provided for gathering information and data on the surface characteristics of an object includes a projector, a table, a first camera and a second camera. The projector is suspended above the table and arranged to project a random pattern of optical indicators onto the table. The optical indicators can be dots, lines, or other such indicators. The table is arranged to hold the object to be inspected. The first camera is positioned above and to one side of the table and angled toward the table. The second camera is positioned above and to opposite side of the table and angled toward the table. The first and second cameras are arranged to capture images of the optical indicators projected onto the object. The system is further arranged to gather information and data from the captured images and determine the surface characteristics of the object from said gathered information and data.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 2, 2019
    Applicant: AP Robotics, LLC
    Inventors: Kam Chiu Lau, Guangkun Li
  • Publication number: 20170370700
    Abstract: A optical target assembly is disclosed herein. The optical target assembly is movable about orthogonal pitch, yaw and roll axes and includes a reflector, a pitch and yaw angular sensor assembly, and a roll sensor assembly. The reflector is configured to engage a source of laser light. The pitch and yaw angular sensor includes a laser light sensor and an angle detection sensor. The pitch and yaw angular sensor assembly is configured to measure 360 degrees of motion about the pitch and the yaw axes. The roll sensor assembly is configured to measure 360 degrees of motion about the roll axis. The reflector can include an aperture configured to permit a portion of laser light incident on the reflector to pass through the reflector and onto the laser light sensor. The roll sensor assembly can include a roll angle sensor and a roll level sensor coupled to a two-dimensional pendulum.
    Type: Application
    Filed: August 21, 2017
    Publication date: December 28, 2017
    Applicant: Automated Precision, Inc.
    Inventor: Kam Chiu Lau
  • Publication number: 20170131081
    Abstract: Disclosed herein are interferometric measurement systems and methods. In one exemplary embodiment an interferometric measuring system for measuring the distance to or displacement of an object includes: a light source; an interferometer with a measuring arm and a reference arm; a dispersive medium; and a detector. The interferometer is disposed between the light source and the object. The dispersive medium is arranged to unbalance the dispersion between the measurement arm and the reference arm. The detector is arranged to detect spectrum interference from the interferometer. In one example, the dispersive medium is a chirped fiber Bragg grating. In another example, the dispersive medium is a highly dispersive optical fiber. In one example, the light source is a broadband light source, and the detector includes a spectrometer. In another example, the light source is a wavelength swept laser, and the detector includes a photodetector or a balanced photodetector.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 11, 2017
    Applicant: Automated Precision Inc.
    Inventors: Kam Chiu Lau, Yongwoo Park
  • Patent number: 9639925
    Abstract: Disclosed is a device for rapidly and comprehensively inspecting a lens actuator, the device comprising a bracket (4) for fixing the lens actuator, a cone-shaped body (2) and a camera (1), wherein the outer surface of the cone-shaped body (2) is a mirror surface, the cone-shaped body (2) is mounted on the top of the bracket (4), and the camera (1) is hung above the cone-shaped body (2). Further disclosed is a system employing the above-mentioned device for rapidly and comprehensively inspecting a lens actuator, and a method for inspecting a lens actuator by using the above-mentioned device. A rapid inspection can be realized so as to facilitate quality inspection and control in mass production, and a comprehensive inspection also can be realized, the inspection items including lens stroke, magnitude of inclination and the similar items under different control conditions.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: May 2, 2017
    Assignee: AP PHOTONICS (SHEN ZHEN) LIMITED
    Inventors: Kam Chiu Lau, Chi Yuen Lau, Chen Chao, Lin Chi Mak
  • Publication number: 20150187066
    Abstract: Disclosed is a device for rapidly and comprehensively inspecting a lens actuator, the device comprising a bracket (4) for fixing the lens actuator, a cone-shaped body (2) and a camera (1), wherein the outer surface of the cone-shaped body (2) is a mirror surface, the cone-shaped body (2) is mounted on the top of the bracket (4), and the camera (1) is hung above the cone-shaped body (2). Further disclosed is a system employing the above-mentioned device for rapidly and comprehensively inspecting a lens actuator, and a method for inspecting a lens actuator by using the above-mentioned device. A rapid inspection can be realized so as to facilitate quality inspection and control in mass production, and a comprehensive inspection also can be realized, the inspection items including lens stroke, magnitude of inclination and the similar items under different control conditions.
    Type: Application
    Filed: March 13, 2015
    Publication date: July 2, 2015
    Inventors: Kam Chiu LAU, CHI Yuen LAU, Chen CHAO, Lin Chi MAK