OCT reference arm structure and OCT imaging system

The utility model is suitable for a medical equipment technical field provides a OCT reference arm structure and OCT imaging system, OCT reference arm and two the different ports of OCT sample arm coordination in fiber coupler, include collimation coupling mirror, the laser energy adjustment unit who sets gradually and can carry out chromatic dispersion compensation and at least one rectangular prism of folding light path that it can be with the pyramid prism of incident light former way reflection still to be equipped with in rectangular prism's reflection direction on the outputting direction of port. The utility model discloses a rectangular prism forms folding light path, carries out the chromatic dispersion compensation simultaneously, has effectively shortened the optical path length, has promoted the stability of reference arm light path, and to the also corresponding reduction of mechanism's requirement of bearing each part of reference arm, the cost is reduced has reduced occupation space simultaneously, and the structure is compacter, adopt the pyramid prism light beam, the system that the small deviation of elimination light path leads to is unstable, has further promoted reference arm's stability.