Bertin & Cie

Cynovad Inc.

Dentalmatic Technologies Inc.

Sc Spim

Architecture, Traitement D'images Et Simulation

Societe Bertin & Cie

Yves F Guern

Gerard Pelous

Jean-Luc M Weber

Michel G Fardeau

Jean-Claude Noack

Michel Ayraud

Thierry Meynard

François Carpentier

Jean M Drevon

Jean P Dignac

Marc R Tommasi

Bruno Dubujet

Jean-Pierre Dignac

Michel Fardeau

Optical device comprising: a spatial filter means for eliminating, from the light rays emanating from an observed scene those coming from a direction or restricted range of directions in space, while letting through most of the light rays coming from said scene; means for varying the direction or the restricted range of directions in space in correspondence with which the spatial filter means eliminates said light rays; a spectral dispersion means for imparting to the light rays coming from said spatial filter means a deviation that is dependent on their wavelength; and an image detector for recording the light rays dispersed by said spectral dispersion means, each point on said image detector receiving light rays coming from said scene and having a different wavelength depending on the direction in space from which they come.

Spectrum-forming device on an optical sensor with spatial rejection

The invention concerns a device for acquiring the three-dimensional shape of an object () by opto-electronic process, comprising a chromatic system () for illuminating the object () and for picking up the light reflected or backscattered by the object (), and a reflecting mirror () placed on the optical axis between the optical system () and an illumination slot () for deflecting the light reflected by the object towards a spectral analysis means ().

Device for acquiring a three-dimensional shape by optoelectronic process

Spectral rejection device for forming an image on an optical sensor

A method and a device for opto-electrically acquiring the shape of a surface by illuminating the surface (S) with light beams (,) having different wavelengths and which converge at different points on the axial illumination direction (Y) in the vicinity of the surface (S), by spectral analysis of the light reflected or backscattered by the surface (S) in the direction (Y) and by determining distances of points on the surface (S) relative to a reference plane (X, Y) from the wavelength and/or the spectral widths of the light analyzed.

Method and device for opto-electrical acquisition of shapes by axial illumination

A method and apparatus for remote optical detection of a gas present in an observed volume using a thermal imager or camera including one or more sensitive elements which are sensitive to radiant fluxes in a determined band of wavelengths, two filters interposable on the optical axis of the camera, the filters having similar transmission bands, one of which includes an absorption line characteristic of the looked-for gas, while the other of which is complementary to said absorption line, and signal processing means for taking the difference between the radiated fluxes received from two points at different temperatures in the volume as observed first through one of the filters and then through the other filter, for taking the ratio of said differences, and for deducing therefrom whether the gas is present in the observed volume.

Method and apparatus for remote optical detection of a gas present in an

Bidirectional inductive transmission of data with slave station supplied

Method and apparatus for surveillance of a determined space in which a camera lens enables an image of said space to be formed on a set of photodetectors associated with information processing means, the set of photodetectors being a linear strip of photodetectors, for example, mounted so as to be fixed relative to the lens which is itself mounted to rotate about a transverse axis and which is displaceable by drive means to occupy predetermined angular positions about said axis.

Method and apparatus for surveillance of a determined space such as a

Method and device for monitoring human respiration

Method and a device for determining the number of people present in a

Growing community of inventors

Pourrieres, France

Yves F Guern