These are examples of CAD imports into Zemax.  The Customer's "real" mechanical components can be imported into Zemax to run scattering analyses or other optical analyses.  LOD can import a customer's actual/existing mechanical layout/part into Zemax to perform optical analyses.  Shown below are just a few of LOD examples, such as, a nozzle, alien, a light pipe used for mixing RGB LEDs, and a RGB LED array using Fresnel lenses to collimate and focus.
LOD Designs

CAD Imported Nozzle Design: