Figure 3.

Dual camera imaging system. Experimental set up for QLF-WL dual-modality imaging system. 1: Patent chin rest for stabilization, 2: White and near-UV LED illumination ring, 3: beam-splitter cube, 4: linear polarizer, 5: WL imaging lens, 6: dedicated 3CCD camera for WL imaging, 7: yellow filter, 8: QLF imaging lens and 9: dedicated 3CCD camera for QLF imaging.

Pretty et al. BMC Public Health 2012 12:366   doi:10.1186/1471-2458-12-366
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