Patent ID: 7126131
Filing Date: 2006-10-24
Classification: G01J,G01N

Abstract:
1. A broad band reflectometer apparatus, comprising: a first light source operating in a first spectral region; a second light source operating in a second spectral region, the first and second spectral regions being different at least in part; and a common optical module utilized with the first light source and the second light source, the optical module including delivery and collection optics to facilitate selection between the first light source and the second light source and to facilitate measurements in the first spectral region and the second spectral region such that a sample spot for each spectral region has at least one similar spot property, wherein the selection between the first light source and second light source by the common optical module restricts light from at least one of the first and second light sources from impacting reflectance data collected using the other of the first and second light sources, wherein the first light source, the second light source and the common optical module are configured to employ a serial data collection method such that sequentially collected data from the first spectral region and the second spectral region may be joined together to create reflectance data for a broad band spectral region comprised of at least portions of both the first spectral region and the second spectral region.