Spectruino is a lightweight, cheap USB Spectrophotometer for analysis of UV/VIS/IR light sources. How to measure light spectrum with Arduino Nano, Duemillanove? Get a fully hackable DIY spectrometer for science classes, education, hackers and electronics

Spectral Products sells spectral instruments and accessories. Standrad productsinclude spectrometers, monochromators, detector modules, light sources, optical fibers, sample holders, filter holders, integrating spheres and power meters.