Matching Flash Tubes to Reflectors by Spectral Re-Pumping
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-26
Disclosed is a means of improving the efficiency of a flash system comprised of a flash tube and reflector. Fig. 1 shows such a system. The output of this system is affected by the match of the spectral reflectivity of the reflector with the output spectrum of the flash tube. If the output bands of the flash tube match the absorptivity bands of the reflector, the output will be low. Conversely, if the flash tube output is concentrated to those wavelength bands where the reflector efficiency is high, the output will be high. This invention achieves that matching. The output spectrum of a typical flash tube is a rather "choppy" replica of Planck's black body spectrum. Fig. 2 shows a typical spectrum.