Patents by Inventor Joel Morisse

Joel Morisse 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).

  • Process for measuring rotation speeds about several axes, and a multiplexed multi-axial gyrofiber allowing this measurement
    Patent number: 5719674
    Abstract: A process and an optical gyroscope are provided for measuring rotation speeds (S) about N axes. The light source and the photodetector are common. Controlled modulation phase differences .delta..PHI..sub.c,i COMPRISE biasing components .delta..PHI..sub.m,i (42, 45, 46) with a common modulation period T.sub.m and common amplitude. Since each half-period T.sub.m /2 is divided into N time intervals .delta.t.sub.i, a change in the sign of the biasing component .delta..PHI..sub.m,i associated with each interferometer I.sub.i is produced at the beginning of one and only one .delta.t.sub.i time interval. Sagnac phase shifts .delta..PHI..sub.s,i are obtained by sampling a signal on the N time intervals.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: February 17, 1998
    Assignee: Photonetics
    Inventors: Philippe Martin, Thierry Gaiffe, Joel Morisse, Pascal Simonpietri, Herve Lefevre