Optical system, especially for switching an optical path, suitably guides light incident via the input following double refractions and a total refraction in the prism so it does not reach the output

摘要

The system consists essentially of an input, an output, a free optical path between the input and output, and a movable prism (22) in the optical path that can be inserted and removed and an optical path. The light incident via the input is suitably guided following double refractions and a total refraction in the prism and does not reach the output.