Infrared Laser Anti-stokes ink detector

Anti-stokes inks can be easily detected in safety
Although the instrument generates an invisible infrared laser beam, the header protection lit-up and an internal mercury switch allow the user to work whithoutworries about the low power laser animed at his or her eyes inadvertently, it will turn off automatically as it is turned upside down.

Infrared laser light excitation is seen as a visible light colour
Special pigments absorb the energy from laser light until they can emit the visible colour reflection.

Security Printing Feature
The anti-stokes effect is currently used as a security printing feature in special inks used for ID cards, passports, checks and other security documents.