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 in fact shown that the 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.
LIGHT BRUSH 2 - TECHNICAL DATA
| Wavelength | 2940 nm |
| 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 |
| Spot | 1 mm |
| 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 |