Patents Assigned to Digital LightCircuits, Inc.
  • Synthesis of supergratings by fourier methods
    Patent number: 6657786
    Abstract: The present invention relates to a method for synthesizing supergratings using Fourier analysis. The method divides the synthesis process into two stages: synthesis of an “analog” grating profile, followed by a quantization step. The method provides a generalized procedure for analog synthesis by drawing on the Fourier approximation and on finite-impulse-response (FIR) filter design theory, while it interprets the simple threshold quantization as a “zeroth order” Delta-Sigma Modulator, which it improves.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: December 2, 2003
    Assignee: Digital LightCircuits, Inc.
    Inventors: Daniel Levner, Martin F. Fay, Jingming Xu