Patents by Inventor Chon-Su Kyoung

Chon-Su Kyoung 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: 6952389
    Abstract: Disclosed herein is an optical pickup device. The optical pickup device has a lead frame package and a detecting unit. The lead frame package has a lead frame, a two-wavelength light source module and a hologram optical element. The lead frame has an opening formed to communicate with the outside. The two-wavelength light source module is arranged in a portion of the opening for emitting two beams having different wavelengths toward an optical disc. The hologram optical element is arranged over the two-wavelength light source module. Further, the hologram optical element includes a hologram pattern formed in its top and a wavefront-compensation hologram pattern formed on its bottom. The detecting unit has a board arranged beneath the lead frame package to be separated from and moved independently of the lead frame package, and a photo detector mounted on said board.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: October 4, 2005
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chon-Su Kyoung, Seung-Man Oh, Ho-Seop Jeong
  • Optical pickup device
    Publication number: 20030179681
    Abstract: Disclosed herein is an optical pickup device. The optical pickup device has a lead frame package and a detecting unit. The lead frame package has a lead frame, a two-wavelength light source module and a hologram optical element. The lead frame has an opening formed to communicate with the outside. The two-wavelength light source module is arranged in a portion of the opening for emitting two beams having different wavelengths toward an optical disc. The hologram optical element is arranged over the two-wavelength light source module. Further, the hologram optical element includes a hologram pattern formed in its top and a wavefront-compensation hologram pattern formed on its bottom. The detecting unit has a board arranged beneath the lead frame package to be separated from and moved independently of the lead frame package, and a photo detector mounted on said board.
    Type: Application
    Filed: May 31, 2002
    Publication date: September 25, 2003
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chon-Su Kyoung, Seung-Man Oh, Ho-Seop Jeong