A light source has uniform spectral radiance. Determine the chromaticity coordinates for the source as seen through the following two filters (using CIE 2 colour-matching functions) . Show the locations on a chromaticity diagram.

T a 1 400 nm 500 nm 600 nm 700 nm TA b 400 nm 500 nm 600 nm 700 nm c) Also note the white or equal energy point on the diagram. 0.9 520 0.8 540 0.7 560 0.6 500# 0.5 y 0.4 0.3 620 700 0.2 480- 0.1 470- 0.0 460% 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8