Fisheye lenses as machine vision devices
Fisheye and liquid lenses in lidar and machine vision
https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-27-4-4404&id=404762
Fisheye lenses as beam concentrators, nonmechanical efficency enhancer for solar panels.
https://www.researchgate.net/publication/284441539_Ray-Trace_Evaluation_of_a_Fisheye_Lens_as_Static_Concentrator