Two mercury-quartz lamps are used as ultra-violet light source, they are
mounted within light plastic case providing air-cooling of the lamps.
Ultra-violet lamp radiation is projected onto the object analyzed via
black light filter which has transmission maximum in 365 nm that causes
intensive luminescence of objects analyzed.
Built-in flat Fresnel's lens provides to examine details of object
analyzed with magnification that increase the reliability of luminescent
Radiation is safe for eyes.