France Telecom

Get/enst Betagne

Groupe Des Ecoles Des Telecommunications/ Ecole Nationale Superieure De Telecommunications De Bretagne

Zong Yan Wu

Jean-Louis De Bougrenet De La Tocnaye

Philippe Grosso

Jean-Louis De Dougrenet De La Tocnaye

Emmanuel Daniel

Marc Le Menn

An optical refractometer is provided for measuring the refractive index of a liquid. Such a refractometer includes a first optical block having a transparent material whereto is secured a light source, a second optical block having a transparent material whereto is secured a position sensor. The optical blocks are arranged on either side of a conduit wherein the liquid flows.

Optical refractometer for measuring seawater salinity and corresponding salinity sensor

This camera comprises an electron tube with a photosensitive target (6) made of single-crystalline semiconducting material, lens (10) for forming the image of a scene on the target, an electron gun (14) to supply an electron beam to read the target, and scanning and focusing portion (18) designed to force the target to be scanned by this electron beam and to focus this electron beam on the target. The target then outputs a signal representative of this image. The camera also includes an electronic processing circuit (20) for controlling the electron gun and scanning and focusing of the camera and receiving and storing circuits (22) for receiving and storing the signal. Application to the analysis of very fast movements.

Camera with a very fast non-smear tube

Growing community of inventors

Brest, France

Zong Yan Wu