| ECOLE NATIONALE SUPERIEURE DE TECHNIQUES AVANCEES Patent applications |
| Patent application number | Title | Published |
|---|
| 20120126148 | Device for Generating a Secondary Source by Laser-Material Interaction Comprising an Optical Device for Controlling the Orientation and the Position of a Surface in Movement - A device for generating a secondary source from a primary optical source emitting a first optical beam focused onto a surface in movement, with which said first beam interacts so as to generate a secondary beam, includes an optical device for controlling the orientation and position of said surface to determine the orientation and position of the emission point of said secondary source on said surface. The device comprises: a control laser beam split into two branches, a fixed reference beam and a mobile analysis beam reflected by the surface in movement; means for making said reference and analysis beams interfere to generate interference fringes; means for imaging the interference fringes carrying information about the orientation and position of said surface; means for analyzing said interference images; and means for generating a feedback loop for controlling the orientation and position of said surface in movement based on the analysis. | 05-24-2012 |
| 20110157551 | DEVICE AND METHOD FOR OPTICALLY MEASURING THE TRANSMISSION AND DIFFUSION OF OCULAR MEDIA - An optical device for measuring the transmission and diffusion of a tissue of the front segment of an eye, includes: a light source; an optical collimation system for directing the collimated light beam towards a tissue of the front segment of an eye to be characterized; an optical mire placed on the optical path between the optical collimation system and the tissue; an optical imaging system capable of receiving a light beam transmitted by the mire and the tissue and capable of forming an image of the mire on an image detector; and an image processing system capable of calculating a modulation transfer function for the tissue from an image of the mire through the ocular medium. The optical mire includes a set of alternately light and dark angular sectors radially distributed from a central point. Different image processing methods for extracting a function representing the transmission and diffusion characteristics of the tissue are described. | 06-30-2011 |
