AN OPTO-ELECTRONIC REFRACTOMETER FOR MEASURING THE REFRACTIVE INDEX OF LIQUIDS.

摘要

This invention relates to an opto-electronic refractometer (1) for measuring the refractive index of liquids comprises, an isosceles prism (2) having a base (3) and having a first and second to equal faces (8,9) disposed opposite to each other, a source of light (5) with a lens system (6) disposed in the proximity of said first face (8) as to provide a convergent beam of light (7) fall at right angle on said first face, the base (3) of said prism (2) being interfaced so that the light beam is partially reflected and partially transmitted; characterized in that, an array of pinholes (10) disposed in the planeparallel to said second face (9), a converging lens (11) for receiving said light from the array(10), an measuring means (12) such as optical power meter for measuring the light from said lens.