Refractometer for measuring refractive index of liquid, solid or gaseous materials, has optical element arranged in reflected radiation beam path between measuring surface and receiver, to split beam into color spectrum

摘要

An optical element (6) constituting a grid and a dispersion prism, is arranged in the reflected radiation beam path between a measuring surface and a receiver. The total reflection of light beam bundle emitted from a white light source (1) is maintained at a critical angle. The optical element splits the beam with a color spectrum.