Spotlights with external lens are direct lights, based on our regular spot lights. However, thanks to the C-mount thread on the body, you can combine them with any C-mount lens. It allows you to focus the spot of light on the smallest possible area and use them from long distances. Series FLSL is available in all 14 wavelengths, including 4 UV (365,385,395,405 nm) and 3 IR (810, 850, 940 nm)
