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Did You know?
The word "collimate" derives its origin from the Latin verb collimare, which is a misreading of collineare, meaning "to direct in a straight line’’. Going back to the history, it was Henry Kater who, in 1825, invented the world’s first collimator, which had applications in practical astronomy. Optical collimators are now widely used as instruments for calibration and alignment in gunsights, fiber optics and various telescopic devices. The primary function of a collimator is to make light beams parallel, so that the spread is minimized upon propagation.