METHOD FOR OCULAR FOCUSING OF OPTICAL SYSTEMS

摘要

Disclosed is a method for ocular focusing of optical systems wherein at least two parallel light beams displaced relative to each other are directed to the optical system lens, and focusing is performed by relative motion of the object and lens up to coincidence of light beams reflected from the object. The light beams of different spectral colors are directed to the lens. The relative motion of the object and lens is performed up to appearance of mixed color reflected beam.