Patents by Inventor Michael Rud

Michael Rud 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: 6295405
    Abstract: A non-scattering light pipe includes a transition surface between a first side wall and an input surface and a second side wall and the input surface. The transition surface is arranged to substantially obscure the corner interfaces between the first and second side walls and the input surface such that in the corner formation any imperfections therein are not imaged into the output. Most preferably, the transition surface is optimized to provide a substantially uniform light intensity distribution. A light pipe in accordance with the preferred embodiments of the present invention is further arranged to couple to a linear light source, such as a cold cathode fluorescent light (CCFL). The light source is arranged such that dim areas, i.e., areas of the light source having non-uniform intensity, are not disposed adjacent the input surface.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: September 25, 2001
    Assignee: Physical Optics Corporation
    Inventors: Tomasz P. Jannson, Stephen A. Kupiec, Jeffrey A. Laine, Michael Rud, Anatoly Vasiliev