Patents by Inventor Olivier Chanal

Olivier Chanal 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).

  • Method and device for correcting the thermoelastic effects, notably for a space telescope, and telescope comprising such a device
    Patent number: 9618736
    Abstract: A method for correcting the thermoelastic effects on performance parameters of a telescope on board a space satellite, comprises a first step prior to the flight of the satellite consisting in determining, a priori, a correction of the thermoelastic effects by using a prior model of variations of the thermoelastic effects on the orbital scale and an algorithm for determining correction fed by programming data of the space satellite, and a second step carried out in flight, based on the correction determined a priori, consisting in establishing control messages of correction means for correcting the performance parameters of said telescope.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: April 11, 2017
    Assignee: THALES
    Inventors: Jean-Francois Blanc, Olivier Chanal, Arnaud Liotard, Damiana Losa, Catherine Charbonnel, Christophe Devilliers
  • METHOD AND DEVICE FOR CORRECTING THE THERMOELASTIC EFFECTS, NOTABLY FOR A SPACE TELESCOPE, AND TELESCOPE COMPRISING SUCH A DEVICE
    Publication number: 20130329286
    Abstract: A method for correcting the thermoelastic effects on performance parameters of a telescope on board a space satellite, comprises a first step prior to the flight of the satellite consisting in determining, a priori, a correction of the thermoelastic effects by using a prior model of variations of the thermoelastic effects on the orbital scale and an algorithm for determining correction fed by programming data of the space satellite, and a second step carried out in flight, based on the correction determined a priori, consisting in establishing control messages of correction means for correcting the performance parameters of said telescope.
    Type: Application
    Filed: June 6, 2013
    Publication date: December 12, 2013
    Inventors: Jean-Francois BLANC, Olivier CHANAL, Arnaud LIOTARD, Damiana LOSA, Catherine CHARBONNEL, Christophe DEVILLIERS
  • Optical instrument comprising an entrance cavity in which a mirror is placed
    Patent number: 7855832
    Abstract: The invention relates to an optical instrument (1) comprising at least one mirror called the primary mirror (3), placed in a cavity (2) and comprising an active face capable of being subjected to instantaneous variations of the incident radiative flux. According to the invention, the cavity (2) comprises a rigid internal casing (20) around the mirror consisting of a material having a thermal inertia so as to damp the instantaneous variations of the incident radiative flux thereby making it possible to limit the temperature fluctuations of this cavity and, consequently, the temperature fluctuations of the mirror. The invention applies to the space field.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: December 21, 2010
    Assignee: Thales
    Inventors: Olivier Chanal, David Valentini, Christophe DeVilliers
  • Device for thermal stabilisation of an object to be cooled
    Publication number: 20030154728
    Abstract: The invention relates to a device for thermally stabilizing an object (20) to be cooled to a temperature of the order of 6 to 25 K by circulating a fluid, characterized in that it comprises:
    Type: Application
    Filed: December 3, 2002
    Publication date: August 21, 2003
    Inventors: Jean-Paul Perin, Olivier Chanal