Patents by Inventor Jang-Hun (James) Yeh

Jang-Hun (James) Yeh 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).

  • Method, device and optical package with enhanced temperature stability
    Patent number: 6108109
    Abstract: The present invention provides a method, device and optical package (10,22) for enhancing a temperature stability by controlling a variable characteristic of an optical package and optical interconnect system.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: August 22, 2000
    Assignee: Motorola, Inc.
    Inventors: Alan Gengsheng Chen, Jang-Hun (James) Yeh, Sean Xin Wu
  • Low cost, efficient vertical cavity surface emitting laser package, method, bar code scanner and optical storage unit
    Patent number: 5974066
    Abstract: The present invention provides a low cost, efficient vertical cavity surface emitting laser package (300) and manufacturing method, the package having a head assembly having at least three leads, a vertical cavity surface emitting laser die bonded to a top surface of the head assembly, for generating a beam of light, and a photodiode, die bonded to the top surface of the head assembly proximate to the vertical cavity surface emitting laser for receiving at least a portion of the beam of light, and generating feedback for adjusting an electrical input current to the vertical cavity surface emitting laser based on a received optical power of the portion of the beam of light received. The vertical cavity surface emitting laser and the photodiode are injection molded in a predetermined shape with a recessed area for placement of a partially reflective holographic optical element/reflector.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: October 26, 1999
    Assignee: Motorola, Inc.
    Inventors: Sean Wu, Chao-pin Yeh, Karl Wyatt, Jang-Hun (James) Yeh, James Morikuni