Photopia Photopia’s library now includes the following circular/symmetric diffusers from Luminit:  1°, 5°, 10°, 15°, 30°, 60° and 80°.  This will allow fixture manufacturers to quickly and accurately simulate the performance of circular Light Shaping Diffusers (LSDs®) in non-imaging optical designs.    Photopia allows for the production of virtual luminaires in a fraction of the time and for a fraction of the cost of physical prototypes.  With computer modeling, a number of design variations can be tested without altering physical tooling.  Photopia’s Parametric Optical Design Tools module allows you to create optical designs in which you control how the light is aimed and the relative amount of light sent in various directions in your distribution.  All of the key aspects of the design that affect the light control are parameterized in ways meaningful to optical design.  This is in direct contrast to standard parametric CAD software, which only allows you to parameterize mechanical features that have indirect and unknown optical effects.  Photopia includes a built-in CAD system that allows the user to create and manipulate components of the model.  Photopia also interfaces with the following CAD packages: SolidWorks™, AutoCAD™, Pro/Engineer™, CREO™, Solid Edge™, and Inventor™. Optis Speos SPEOS is the core technology behind OPTIS’ family of light simulation software and is available as a stand-alone software package or as software integrated in a CAD platform. With twenty years of practical application, SPEOS is the most full featured and realistic tool to create, analyze, and virtually validate innovative lighting systems.