How do two colors mix to make a new color? Answer: Think of light as a wave travelling from one place to another, with different colors produced by variation in the distance between peaks of the wave ...

Photometers or light meters are radiometers that include a filter and photodiode and responds based on the average human eye: the CIE 1924 luminosity function V λ. However, the light sensitive diode ...

Highly efficient subtractive tri-color filters of cyan, magenta and yellow with enhanced color purity and robustness have been proposed and realized, by exploiting a silicon-aluminum (Si-Al) ...

We propose and numerically demonstrate subtractive color filters (SCFs) based on a plasmonic metasurface including coaxial aperture geometry working in the visible range. The Proposed designs involve ...