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Knight Optical offer a complete range of Stock Polarisers for a range of applications that could be used for Head-mounted Displays. Our stock polarisers cover wavebands <0.2 to >2µm, we can also supply custom polariser options made to your complete custom specifications. A head-mounted display (abbreviated to HMD), is a display device worn on the head or part of a helmet that has a small display optic in front of one (monocular HMD) or both eyes (binocular HMD) and can be used in applications within gaming, aviation, engineering and medicine. There are also optical head-mounted display (OHMD) which is a wearable display that can reflect projected images and allows a user to see through it (often used in conjunction with a Beamsplitters). READ PDF FOR MORE INFORMATION

USE : Track Levelling Works, (Renovation, Maintenance, and Repair Works) ADVANTAGES : Very accurate and reliable. Telescope and Levelling Rod on stand (Height above the rail = 110 cm) Reference Magnification Reading at ... (m) Weight (Kg) Telescope Levelling Sight LM24X 24 times 40 11 3 LM50X 50 times 80 13 3 The Telescope includes a graduated Levelling Sight with bubble Level, but can be supplied without Levelling Sight on request . Low Telescope (Height above the rail = 18 cm) Reference Magnification Reading at ... (m) Weight (Kg) Telescope Levelling Sight 220 (*) 20 fois 40 4 2 235 50 fois 80 8 2.2 (*) SNCF Model The Telescope includes a graduated Levelling Sight (5 graduations) with Bubble Level. OPTIONS : - For Low Telescope : Track Lining Rule mounted to the back of the Levelling Sight - Ref. 225 - Transporting Case (Telescope and + Levelling Sight) : * For Telescope on stand (wooden) = 17 Kg - Ref. 222 * For Low Telescope (metal) = 5.3 Kg - Ref. 221