Patents by Inventor Len Li Lim

Len Li Lim 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).

  • Providing optical feedback on light color
    Publication number: 20050030538
    Abstract: Optical feedback for controlling color of light from a light source is provided. Incident optical energy of the light is detected as a function of discrete steps of wavelength. For each discrete step of wavelength, an X, Y and Z tristimulus subvalue is produced. All the X, Y and Z tristimulus subvalues for all the discrete steps are summed together to produce an X, Y and Z tristimulus value for the light. The X, Y and Z tristimulus values are used as feedback in controlling color of the light generated by the light source.
    Type: Application
    Filed: August 5, 2004
    Publication date: February 10, 2005
    Inventors: Rizal Jaffar, Len Li Lim, Joon Lee