Bildprojektionssystem mit Verwendung von zwei orthogonalen Lichtpolarizationskomponenten.

摘要

The invention relates to an image projector in which a spatial modulation of the light is carried out on the two orthogonal polarisation components of the light so as to increase the luminous efficiency of the projector. …The image projector of the invention comprises a light source (S), a projection screen (2), a polarisation splitter (SP) splitting the light into two polarised beams having complementary polarisations, two mirrors (M1,M2) reflecting the two polarised beams so as, on the one hand, to give them opposite directions and to superimpose them on the same axis (13) on which a light spatial modulator (12) is disposed and, on the other hand, in order to cause them to pass back via the polarisation splitter (SP) by which they are superimposed on the same axis (8,5) with the same direction and are oriented into the direction of the projection screen and/or the light source as a function their modulation by the spatial modulator (12). ……