Light Brush 2 is an Er:YAG laser system optimized for the cleaning of artworks. Er:YAG laser cleaning is based on the strong absorption of the 2940 nm wavelength from superficial layers containing OH bonds.
Many studies have shown indeed that Er:YAG laser exposure of a surface dampened with a liquid containing – OH groups effectively removes old varnish and other encrustations without inducing unwanted chemical or physical changes on the original surface. For this reason, Light Brush 2 is particularly suitable for the removal of overpaintings and varnishes from wall and easel paintings. Light Brush 2 is an innovative tool for restorers thanks to variable energy emission from 50 mJ to 500 mJ and to adjustable pulse duration.
|Pulse duration||VERY SHORT mode 150 µs, SHORT mode 250 µs, LONG mode 400 µs|
|Maximum energy||500 mJ|
|Energy||VERY SHORT mode: selectable from 50 mJ to 300 mJ (step 50mJ),
SHORT mode: selectable from 100 mJ to 500 mJ (step 50mJ),
LONG mode: selectable from 100 mJ to 500 mJ (step 50 mJ)
|Repetition rate||1 ÷ 10Hz, 15Hz, 20Hz|
|Beam delivery||7-mirrors articulated arm|
|Power supply||230V, 50-60 Hz, 8.5A|
|Size and weigth||23 X 65 X 68 cm, 47Kg|
|Laser shutter||Controlled by footswitch|