Patents by Inventor Jurgen Perkams

Jurgen Perkams 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).

  • Optical sound head combined with a sound film projector
    Patent number: 5740294
    Abstract: An optical sound head (L), comprising a red laser diode (11) and a inspection window (90), allowing easy functional inspection, but also simple adjustment during manufacture. The laser diode (11) and all optical (10) and electronic (20) assemblies to be adjusted to a specimen, are accommodated in a replaceable assembly (1), for easy and repeatable (A) replacement. A minimum signal-to-noise ratio for analogue sound scanning is achieved by an additional aperture (15), reducing the light intensity applied to the center of an aperture slot (8). Both apertures (8, 15) are preferably designed as unsupported, laser-cut metal sheets.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: April 14, 1998
    Assignee: Raytheon Anschuetz GmbH
    Inventors: Hans Baumann, Jurgen Perkams