Patents by Inventor Charlie J. Kaiser

Charlie J. Kaiser 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).

  • Patent number: 4976539
    Abstract: A diode laser array comprises a substrate of a semiconductor material having first and second opposed surfaces. On the first surface is a plurality of spaced gain sections and a separate distributed Bragg reflector passive waveguide at each end of each gain section and optically connecting the gain sections. Each gain section includes a cavity therein wherein charge carriers are generated and recombine to generate light which is confined in the cavity. Also, the cavity, which is preferably a quantum well cavity, provides both a high differential gain and potentially large depth of loss modulation. Each waveguide has a wavelength which is preferably formed by an extension of the cavity of the gain sections and a grating. The grating has a period which provides a selective feedback of light into the gain sections to supporting lasing, which allows some of the light to be emitted from the waveguide normal to the surface of the substrate and which allows optical coupling of the gain sections.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: December 11, 1990
    Assignee: David Sarnoff Research Center, Inc.
    Inventors: Nils W. Carlson, Gary A. Evans, Charlie J. Kaiser
  • Patent number: 4423427
    Abstract: A major surface of a disc-shaped plastic base is coated with two or more nonconformal coating layers with a solvent barrier layer interposed between said coating layers. The nonconformal coating layers fill in surface imperfections of the base while the solvent barrier layers allow an efficient stacking of said coating layers to yield a surface suitable for optical recording.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: December 27, 1983
    Assignee: RCA Corporation
    Inventor: Charlie J. Kaiser
  • Patent number: 4362367
    Abstract: Miniaturized optics comprising transverse and lateral cylindrical lenses composed of millimeter-sized rods with diameters, indices-of-refraction and spacing such that substantially all the light emitted as an asymmetrical beam from the emitting junction of the laser is collected and translated to a symmetrical beam.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: December 7, 1982
    Assignee: RCA Corporation
    Inventors: Jacob M. Hammer, Charlie J. Kaiser, Clyde C. Neil