What file format will be best to implement exporting to Blender?

Hello!

I am developing a CAD application, from which I want to export some data, let the user import it into Blender, and perform a rendering. The data is in the form of several meshes and some light sources.

I read that .blend format is not the best fit for data exchange between Blender and external apps. What would be the good format for this task?