Patents by Inventor Henri Bourcier

Henri Bourcier 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).

  • Picture analyser tube with streak compensation
    Patent number: 4999548
    Abstract: A picture analyser tube with streak compensation constituted by a light intensifier tube structure comprising a photocathode (1) associated with an acceleration grid (2) and a microchannel plate (3) associated with an acceleration grid (4) coupled to an electron-sensitive (6) or photosensitive objects (7) CCD matrix. The wire compensation effect is obtained, for example, by deflecting the electron beam issued by the photocathode (1) by means of electromagnetic coils (5) traversed by currents the intensities of which are controlled in order that the deflection movement of the said beam is opposite to the movement of the picture during the duration of the passage of the object in the field of view of the device. The picture is thus immobilized in the plane of the CCD detector.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: March 12, 1991
    Assignee: U.S. Philips Corp.
    Inventors: Henri Bourcier, Francois X. Doittau
  • Device for temporarily overcooling a cooled detector and detector comprising such a cooling device
    Patent number: 4991399
    Abstract: A device for temporarily overcooling a detector (1) cooled permanently in a space by means of a first cooler (5).According to the invention, a second cooler (6) is temporarily made operative to produce the required overcooling without causing heat exchange with the outside. For this purpose, the thermal energy dissipated by the cooler (6) is absorbed by the passage from solid to liquid of a material changing in phase (7) (water or tetradecane) arranged between the first and second coolers.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: February 12, 1991
    Assignee: U.S. Philips Corp.
    Inventors: Henri Bourcier, Marc Pochard
  • High-power illumination device for a camera
    Patent number: 4894677
    Abstract: A high-power illumination device (2) integrated with a camera (1) for measuring the direction, distance and/or attitude of two objects relative to each other, one of the objects carrying the device. For obtaining a high-power emission several elementary light sources (10) are arranged in a ring configuration around the input-optical system (7) of the camera. The light beam emitted by each source is focused via a deflecting mirror (12) onto a facet mirror (13) surrounding the input-optical system (7) and comprising as many facets as there are light sources. Each facet is inclined so as to align the direction of the reflected beam with the direction of the field of view of the camera. The beams from these facets are thus quasi-superimposed around the optical axis of the camera.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: January 16, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Henri Bourcier, Pierre Turon Lacarrieu