FOUR ZONE OPPONENT COLOUR INGREDIENT METER Russian patent published in 2023 - IPC G01J3/46 

FIELD: spectrographic research.

SUBSTANCE: invention concerns a four-zone opponent meter for colour ingredients. The meter using a diffraction grating divides the light into seven monochrome bands, which illuminate four wide-band photocells of a triangular shape of a planar sensor. Red and orange stripes are projected onto the first photocell (R-zone), orange, yellow and green stripes are projected onto the second photocell (Y-zone), green, blue and blue stripes are projected onto the third photocell (C-zone), the fourth photocell (V-zone) blue and violet stripes are projected, and purple light synthesized from a mixture of red and violet light is separated by a diffraction grating into red and violet stripes, which are projected respectively onto the R-zone and V-zone. The division of light into eight opponent colours is made in electronic units using arithmetic and logical formulas. Based on the obtained eight colour ingredients, one verbal, three flat and one volumetric colour representations are formed, which are displayed on a four-color Full Colours display.

EFFECT: increasing the measurement accuracy and visibility of the representation of the colour components.

8 cl, 31 dwg