Fig. 7
From: A framework for real-time image detection of bioaerosols

Isolated images depicting the color difference due to induced fluorescence contributions for particles illuminated with a 405-nm, 300-mW laser. Note that the images are cropped to focus on the illuminated area. (a) 2.87-µm NaCl particles with two UV-IR cut filters (Gzikai) applied, an exposure control value of -4, and a particle speed of 0.1 m/s. (b) 2.87-µm 1% mass riboflavin particles with two UV-IR cut filters (Gzikai) applied, an exposure control value of -4, and a particle speed of 0.1 m/s. (c) An unknown concentration of NaCl and 1% mass riboflavin particles with two UV-IR cut filters (Gzikai) applied. The UV-IR cut filters have a reported transmission of 93% at a wavelength of 415 nm.