Broad band VIS+NIR LEDs
Broadbands LED based on a blue LED and “phosphors” have appeared in the market. One example is type SMB1N-BB450 from Roithner LaserTechnik (Vienna, Austria). The primary LED has a peak of emission at 450 nm and the spectrum as a whole covers the range 400 nm to 1000 nm. Except for the prominent blue peak the spectrum is rather flat, making it useful light source for VIS and specially NIR …