operates from 120V AC, uses cold cathode 1W fluorescent lamp and RC network for current limiting
http://www.imagineeringezine.com/PDF-FILES/flunight.pdf
http://www.discovercircuits.com/PDF-FILES/flunight.pdf
hits the small lamp with narrow 1us pulses at a rate of 10KHz, each pulse launches about 10 watts of visible light
http://www.imagineeringezine.com/PDF-FILES/5wlamp.pdf
using light techniques to send identification data instead of RF.
http://www.imagineeringezine.com/PDF-FILES/opiddemo.pdf
http://www.discovercircuits.com/PDF-FILES/undervol.pdf
use a current compensation method to separate the modulated light pulses from ambient light.
http://www.imagineeringezine.com/PDF-FILES/40krvr4.pdf
http://www.acmeart.com/greg/rhino/rhino8.pdf