Users interested in Lumion collada exporter for revit generally download:
The Autodesk Revit exporter allows you to save your model in a format that Lumion can read. This add-in enables you to leverage other 3D authoring applications which may not import native Lumion files. It is a add-in designed for simulation developers.
Save your Revit files in the Collada (.DAE) format or create a live connection between Revit and Lumion and get a real-time high-quality 3D view of your designs. Works as a plug-in for Revit.