special prismatic splitters

KÖSTER prism made with two identical prisms (90o-60o-30o). Longer short faces, with beam dividing coating on one of them, are cemented. With this prism, the light beam can be divided into two parallel beams. The distance between beams can be adjusted.
This special beam divider also enables splitting beam of light per two beams parallel each to the other, and parallel to the input beam with accuracy of tolerance.