Patents by Inventor Yong-San Shin

Yong-San Shin 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).

  • Optical pickup device
    Patent number: 7190657
    Abstract: An optical pickup device including a dual wavelength light source module for emitting a selected one of two light beams having different wavelengths, a dual grating for splitting, into three beams, the selected light beam emitted from the dual wavelength light source, and a hologram for focusing the three beams of the selected light beam onto a photodetector having typical 8-section patterns such that the three beams of the selected light beam are focused onto the same spots as those of the other light beam, respectively.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 13, 2007
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yong-San Shin, Chun-Gi Kim, Oh-Byoung Kwon, Woo-Seok Choi, Sung-Wook Kim, No-Jun Kwak, Eui-Joong Kim
  • Optical pickup device
    Publication number: 20050128923
    Abstract: An optical pickup device including a dual wavelength light source module for emitting a selected one of two light beams having different wavelengths, a dual grating for splitting, into three beams, the selected light beam emitted from the dual wavelength light source, and a hologram for focusing the three beams of the selected light beam onto a photodetector having typical 8-section patterns such that the three beams of the selected light beam are focused onto the same spots as those of the other light beam, respectively.
    Type: Application
    Filed: March 2, 2004
    Publication date: June 16, 2005
    Inventors: Yong-San Shin, Chun-Gi Kim, Oh-Byoung Kwon, Woo-Seok Choi, Sung-Wook Kim, No-Jun Kwak, Eui-Joong Kim
  • Variable optical attenuator
    Patent number: 6775459
    Abstract: Disclosed is a variable optical attenuator comprising: a transmitting fiber for transmitting light; a receiving fiber concentrically placed with said transmitting fiber for absorbing light; a shutter between said transmitting fiber and said receiving fiber for absorbing light to adjust optical transmittance; and an actuator for driving said shutter. The size and price of the optical attenuator is remarkably reduced compared to a conventional mechanical connector-type attenuator to provide an article excellent in competitive edge.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: August 10, 2004
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yoon Shik Hong, Yong San Shin, Young Yun Kim, Jong Hyun Lee, Sung Cheon Jung, Jung Hyun Lee
  • Variable optical attenuator
    Publication number: 20030161408
    Abstract: Disclosed is a variable optical attenuator comprising: a transmitting fiber for transmitting light; a receiving fiber concentrically placed with said transmitting fiber for absorbing light; a shutter between said transmitting fiber and said receiving fiber for absorbing light to adjust optical transmittance; and an actuator for driving said shutter. The size and price of the optical attenuator is remarkably reduced compared to a conventional mechanical connector-type attenuator to provide an article excellent in competitive edge.
    Type: Application
    Filed: July 10, 2002
    Publication date: August 28, 2003
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yoon Shik Hong, Yong San Shin, Young Yun Kim, Jong Hyun Lee, Sung Cheon Jung, Jung Hyun Lee