A Trichromatic Colorimeter with Spectral Primaries

  title={A Trichromatic Colorimeter with Spectral Primaries},
  author={William M. D. Wright},
The paper describes a trichromatic colorimeter that has been specially designed in order to make an accurate re-determination of the locus of the spectral colours in the colour triangle for as many observers as possible. A spectrometer system is used in which two spectra are formed from the same source. From one of these, three portions to act as primaries are reflected back through a lower part of the dispersing system, so that the mixing of the three radiations is effected by neutralising the… CONTINUE READING