Patents by Inventor Philippe Lamache

Philippe Lamache 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 coupler with high degree of isolation
    Patent number: 5404414
    Abstract: An optical coupler comprises at least one optical fiber (1), one laser (2), one photodiode (3), one focusing lens (30) for focusing on the fiber and one plate (41) which reflects the rays coming from the fiber (1) towards the photodiode (3). In order to prevent a ray sent out by the laser (2) from returning to the photodiode (3) after reflection on the input diopter (4) of the lens (30), the optical axis is broken at the height of this diopter (4) by means of a prism (5). The reflected rays do not return to the plate (41).
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: April 4, 1995
    Assignee: Thomson Hybrides
    Inventors: Gerome Avelange, Philippe Lamache