Sensors & Transducers


Sensor for invisible fluorescent materials

September 2024 Sensors & Transducers

The SMARTEYE STEALTH-UV sensor from Vepac is a special-purpose sensor designed to detect the presence of invisible fluorescent materials contained in or added to chalks, inks, paint, greases, glue or optical brighteners found in labels, paper, tape or string. The sensor contains an ultraviolet solid-state light source that is used to excite the luminescent materials to fluoresce in the visible range. The sensor’s detector then responds to the visible fluorescing light. When the received fluorescing light level (displayed on the Contrast Indicator) reaches a level of 4 or above, the NPN and PNP output transistors switch to the opposite state.


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