October 1, 1998
Author(s)
Howard W. Yoon, Bettye C. Johnson, D Kelch, S F. Biggar, P R. Spyak
An integrating sphere source developed by MTL Systems, Inc. was calibrated for them by a commercial standards laboratory traceable to the National Institute of Standards and Technology (NIST), resulting in values of spectral radiance in the 400 nm to 2500