If you have been using standard IES Light Patterns with your SketchUp Rendering Engine, you have probably been using a chart like this one to select the light pattern. (Most rendering packages seem to offer these same 30 patterns)
We took all the patterns and rendered them with a SketchUp model, with some materials and colors to give you a better idea of what the patterns looked like in a more realistic setting.
If this would be helpful, you can see them all here.