Vacuum Tubes

An evacuated tube is two glass tubes, one within the other, joined at each end. The space between these tubes is evacuated so the space is under a vacuum seal. Vacuums are excellent insulators (think thermos.) The inner tube is coated with a selective coating that converts light into heat.

Guaranteed for fifteen years (the longest warranty on the market) Linuo tubes are made from high quality borosilicate glass and are fused together. This provides an all glass seal. The Linuo evacuated tube uses a unique three layer selective coating instead of the standard single al-n/al coating. It consists of an infrared emission layer, an absorption layer and an anti-reflective layer, giving a much improved performance.