Thanks to TRUE IMAGE TECHNOLOGY, the Series 6 LC sealed linear encoders and Series 1 RCN angle encoders from HEIDENHAIN reliably deliver high-accuracy position feedback—in many cases even without purge air. As a result, the purge air system of machines can be significantly simplified. This reduces the carbon footprint of the encoders by up to 99% and significantly reduces system costs. Thanks to the contamination-resistant optics of these encoders, machine tools can stay productive for longer periods, while going without purge air increases machine availability. Needing fewer components for the purge air system also accelerates the encoder installation process. The key to TRUE IMAGE TECHNOLOGY is a special light guiding element that fully eliminates the optical distortions that typically arise through liquid contamination on the scale. As a result, an unobstructed image of the graduation arrives at the scanning head despite the contamination.