REFLECTION PRISM TO TURN POLARIZATION PLANE Russian patent published in 2002 - IPC

FIELD: optics. SUBSTANCE: reflection prism to turn polarization plane of linearly polarized light through unrestricted preset angle has three reflection faces arranged at angle of total internal reflection as well as input and output faces arranged at Brewster angle with optical axis. Reflection faces are oriented one relative to another and relative to input and output faces in correspondence with given relations. Linear dimensions of prism provide for certain relation of optical paths of light beam between reflections inside prism in agreement with given relations. Prism can be manufactured both from monolithic block and in the form of three reflection prisms with input and output faces arranged at Brewster angle with light beam. Mirror coat can be deposited on second reflection face. EFFECT: correction of lateral displacement of light beam after passage through prism. 2 cl, 6 dwg