OPTICAL SENSOR FOR MEASURING SALINITY AND VISIBILITY IN SEA WATER

摘要

The invention relates to an optical sensor (1000) for simultaneously measuring the deviation and the attenuation of at least one light beam in a fluid. According to the invention, the sensor includes: means for generating a main light beam (1202) and first (1203) and second (1204) secondary light beams from the main light beam; deviation measuring means for obtaining a refraction-based measure of the deviation experienced by the first secondary beam (1203) when crossing at least one layer of a predetermined material juxtaposed with a first layer of a fluid; attenuation measuring means for obtaining a measure of the attenuation experienced by the second secondary beam (1204) when crossing at least one second layer of fluid; means for correcting said attenuation measure based on at least one piece of information obtained through said deviation measure.