Notek lights were blackout drive lights used by German military vehicles in WWII. They were named after the Munich-based company that produced them, Nova-Technik GmbH.
The unit consisted of a 35-watt bulb under the hooded housing that shined backward against a mirror. The reflected light illuminated the ground ahead of the vehicle from under the helmet-like hood. The Notek light illuminated the road to about 100 to 130 feet ahead of the vehicle in a roughly 80-foot swath and had three settings: dim (invisible from the air above 2,000ft), medium, and full (invisible from the air above 6,400ft).