Now it’s official: paintings and pieces of art that have been scanned with the FARO Focus3D suffer no damage through heat. This has been confirmed by a report by Seibersdorf Labor GmbH.
The recordings of pieces of art or interiors of museums is quick and reliable with laser scanners – and can even be done during visiting hours thanks to the safety of scanners for eyes. Nevertheless, the question of whether pieces of art suffer damage as a result of scanning arises time and again. Reason enough for FARO to have this danger investigated in a report.
Oil paintings are seen as particularly sensitive. Paint and oil have low thermal conductivity and heat capacity values. The high-energy laser could cause an increase in the temperature on the surface and damage the substance of the painting considerably. The report does away with these fears.
For a worst case scenario, a FARO Focus3D X was set up at a distance of one metre from an oil painting – without any protective glass between the piece and the scanner. If a scan is conducted in which the scanner moves horizontally – as is customary in practice – there is a temperature increase on the surface of the oil painting of less than 1.3 degrees Celsius. Even if the head of the scanner doesn’t move and the painting is thus scanned with the laser beams for several minutes, the maximum temperature increase is under 2 degrees Celsius.
To test restorative techniques for example, it is normal to place items with oil paints in an oven for several days at over 60 degrees Celsius and so accelerate an aging process. Against this backdrop, it quickly becomes clear that a short-term temperature increase of less than 2 degrees Celsius due to the FARO Focus3D will cause no damage. This has now been confirmed in the report by Seibersdorf Labor GmbH. It also permits the conclusion that photochemical effects are very unlikely at a wavelength of 1,550 nm – good news for the use of the FARO family of laser scanners in the area of cultural assets.