How Red Dot Sights Work (What is a Collimator?)
This video explores the history and technology behind red dot sights, tracing their origins from WWI collimating optics to modern battery-powered designs. It details how collimators project a reticle at infinity and showcases early iterations like the Nydar scope and the Armson OEG, highlighting their limitations. The evolution to electronic sights like the Aimpoint Electronic Mark 2 is presented as a significant advancement.









