Lambda Research Corporation (Littleton, MA) has released TracePro® 5.0, the newest version of its optomechanical design software. TracePro 5.0 provides a new interface for modeling optical sources. Users can define and manage spectral data for each unique source and to combine different source types in a single ray trace. New analysis capabilities include flux versus Optical Path Length (OPL) or Time of Flight (TOF). Simulation advances include reverse ray traces and luminance ray traces with blackbody and gray body sources.