Mathematica manufacturer Wolfram Research Inc. will market Rayica and LensLab software from the Optica Software Div. of iCyt Mission Technology Inc. of Champaign, Ill. Wolfram, also of Champaign, will distribute the optical modeling products through its Web site, enabling users to consolidate the purchase of Mathematica-related products through one vendor. Rayica performs geometric, nonsequential, polarization and ray-trace calculations of optical systems in 3-D space, while LensLab is intended for amateur astronomers and hobbyists.