Interferometer to measure refraction defects in eyes and lenses - has coherent light spot inputs and electro:optical measuring device

摘要

In an addition to 2447889, an interferometric device for measurement of refraction deflects in the human eye and refractive indices of artificial lenses, in constructed in such a way that the lends to be examined has its input function consisting of several light spots which move periodically and coherently along an input plane. An electro-optical device is used for the measurement of displacement of the interference patterns caused by passage of light through the system and lens or eye under examination.