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Optics Inside Head-up Display

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Optics in a Head-up Display
By Qijia Cheng, Nanyang Technological University, Singapore 

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Head-up display (HUD) is aimed for car drivers. With HUD, the driver can read information, without moving their eyes away from the road, and drive safely. To achieve this, the display must be transparent and have good readability even under bright sunlight. HUD is powered by a projector light engine. The light comes to a diffused mirror, forms a real image and then is reflected by a reflector to the driver’s eyes. HUD is one of the key parts in the next generation of advanced driving assistance systems.