Patents by Inventor Eric Campiche

Eric Campiche 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).

  • Afocal optical device
    Patent number: 4406524
    Abstract: The afocal optical device is a removable accessory intended to be placed on an objective for taking pictures in the air as well as in water in order to reduce the focal length without modification of the focussing. In a preferred embodiment it comprises a frontal diverging group (G1) having two diverging lenses (A, B), and a positive rear group (G2) formed of two converging lenses (C, D).
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: September 27, 1983
    Inventor: Eric Campiche