Near Infraredray Lenses covering from 0.9~1.7um spectrum, which could be used at solar-panel inspection, surface scratch inspection, liquid level inside bottle, rice sorting, scanning etc. Some time color imaging could not make out damage or height of inside object of plastic bottle via eye, NIR machine vision camera and lenses will play an important role now to see it clear.
See below.


A: Inside Powder Height Identity, Camera See Through Bottle  ( Above Picture )


B: Apple Damage Inspection, Camera See White Point & Damage ( Above Picture )