Application Example: Dichroic Cold Mirror

The spectral distribution of a broadband light source is important to many optical systems, from white light illuminators to spectrometers. Color Image analysis in FRED produces visualization of color distribution by calculating chromaticity coordinates of each pixel and displaying the resulting RGB values over the surface. Additionally, the color chromaticity diagram is displayed, and chromaticity coordinate of each pixel is indicated when the user moves the cursor across the graph. In this application note, we look at using a dichroic “cold mirror” to split white light into two wavelength bands.