Patents by Inventor Kwok Sing Cheng

Kwok Sing Cheng 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: 20090244298
    Abstract: The invention discloses a imaging device, comprising an imaging module, used for optical to electrical signal conversion, which comprises at least a first imaging unit and a second imaging unit, the first imaging unit used for capturing an image, the second imaging unit used for detecting the movement of the image or the imaging device; a control and processing module, used for controlling the imaging module to output electrical signals, and for processing the electrical signal to generate and to output the motion signal and image signal. The invention also discloses an image capture device which uses the said imaging device. The imaging device can output the motion signal and the image signal simultaneously by adding the second imaging unit used for detecting the movement of the image or the imaging device; consequently better captured image quality can be obtained. Also, the structure can become simpler and the manufacture cost can be lower.
    Type: Application
    Filed: March 24, 2009
    Publication date: October 1, 2009
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Tiegang Liu, Sio Kuan Lam, Wing Ming Fan, Kin Ming Fan, Kwok Sing Cheng
  • Publication number: 20090059373
    Abstract: There is provided an actuator used in an optical system comprising a housing, a carrier disposed at least partly inside the housing, and a plurality of linear motion transducers coupled to the carrier and substantially evenly spaced around the carrier within the housing. Each linear motion transducer is able to produce linear motion when energized displacing the carrier relative to the housing to produce linear motion, tilting motion, or both of the carrier.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventors: Sio Kuan Lam, Wing Ming Fan, Tiegang Liu, Kwok Sing Cheng, Ho Shan Ng
  • Publication number: 20080239325
    Abstract: A method of sensing movement or proximity of objects by optical reflection is provided. The method includes the steps of transmitting a train of optical pulses towards a destination, sensing optical pulses reflected from the destination, and sensing and evaluating movement or proximity characteristics of objects at the destination with reference to variation in pulse width between transmitted and reflected optical pulses.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Applicant: Hong Kong Applied Science Technology Research Institute Co. Ltd.
    Inventors: Kwok Sing Cheng, Ho Shan Ng, Lai Man Chau, Yeung Ming Chow, Tao Tao
  • Publication number: 20080239324
    Abstract: An optical arrangement includes a position sensitive optical detector, a collimated optical source, and a processor configured to monitor the inclination of an object. The collimated optical source is configured to transmit a collimated beam towards the object. The position sensitive optical detector is configured to detect the specific location of incidence of an optical signal received from the object, and the processor is configured to generate information relating to the inclination of the object from processing optical signals received at the position sensitive optical detector.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventor: Kwok Sing Cheng
  • Patent number: 7254296
    Abstract: An optical assembly incorporates a compact and efficient lens for coupling a beam of light from an optical device to an optical fiber. The lens includes a curved reflecting surface and a focusing surface. The lens is positioned to receive and internally reflect the beam of light from the optical device toward the focusing surface. The focusing surface in turn focuses the reflected beam into the end of an optical fiber. The curved surface may include a reflective coating for transmitting a portion of the beam toward a monitoring unit which is used to monitor a parameter of the beam. The optical assembly may further include a platform for supporting the optical device, the lens, the optical fiber and the monitoring unit.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: August 7, 2007
    Assignee: SAE Magnetics (Hong Kong) Limited
    Inventors: Sio Kuan Lam, Ka Suen Lee, Shing Lui Lau, Kwok Sing Cheng, Mark Wing-Keung Mak, Fuk Kay Frank Tong
  • Patent number: 6869230
    Abstract: An optical assembly is provided that is capable of high speed operation using a vertical cavity laser such as a vertical cavity surface emitting laser (VCSEL). The optical assembly is configured to have a small form factor and uses an angled surface of an embedded fiber to internally reflect a beam from the VCSEL along the length of the fiber. The angled surface is coated to ensure that a small portion of the beam is transmitted through the fiber out of the angled surface into a monitoring diode. This geometry provides high coupling efficiency and facilitates direct active alignment between the fiber and the VCSEL.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: March 22, 2005
    Assignee: SAE Magnetics (Hong Kong)
    Inventors: Kwok Sing Cheng, Yeung Ming Alice Chow, Wai Ming Edwin Cheung, Fuk Kay Franklin Tong, Hing Wa Flora Ho, Allan Hui, Nelson Lau, Ka Suen Lee, Chi Hung Lin, Chi Yue Raymond Cheung, Chun Wah Colin Fan
  • Publication number: 20040175072
    Abstract: An optical assembly incorporates a compact and efficient lens for coupling a beam of light from an optical device to an optical fiber. The lens includes a curved reflecting surface and a focusing surface. The lens is positioned to receive and internally reflect the beam of light from the optical device toward the focusing surface. The focusing surface in turn focuses the reflected beam into the end of an optical fiber. The curved surface may include a reflective coating for transmitting a portion of the beam toward a monitoring unit which is used to monitor a parameter of the beam. The optical assembly may further include a platform for supporting the optical device, the lens, the optical fiber and the monitoring unit.
    Type: Application
    Filed: January 13, 2004
    Publication date: September 9, 2004
    Inventors: Sio Kuan Lam, Ka Suen Lee, Shing Lui Lau, Kwok Sing Cheng, Mark Wing-Keung Mak, Fuk Kay Frank Tong
  • Publication number: 20040136660
    Abstract: An optical assembly is provided that is capable of high speed operation using a vertical cavity laser such as a vertical cavity surface emitting laser (VCSEL). The optical assembly is configured to have a small form factor and uses an angled surface of an embedded fiber to internally reflect a beam from the VCSEL along the length of the fiber. The angled surface is coated to ensure that a small portion of the beam is transmitted through the fiber out of the angled surface into a monitoring diode. This geometry provides high coupling efficiency and facilitates direct active alignment between the fiber and the VCSEL.
    Type: Application
    Filed: July 1, 2003
    Publication date: July 15, 2004
    Inventors: Kwok Sing Cheng, Yeung Ming Alice Chow, Wai Ming Edwin Cheung, Fuk Kay Franklin Tong, Hing Wa Flora Ho, Allan Hui, Nelson Lau, Ka Suen Lee, Chi Hung Lin, Chi Yue Raymond Cheung, Chun Wah Colin Fan