The visible blue light LED outlasts traditional filament bulbs by more than nine years, according to the manufacturer. Various models detect different ranges of luminescence.
Leuze electronic, Inc: Luminescence sensor
The LRT 440 series sensor from Leuze Lumiflex (Rockaway, NJ) detects luminescence in glue marks, labels, plastics, inks, etc. at a range of 50 mm (1.97").
Oct 31, 1998
Companies in this article