ASSEMBLY FOR PROJECTING AN IMAGE ONTO A PROJECTION SURFACE

摘要

The invention relates to an assembly for projecting an image onto a projection surface. Said assembly comprises a light source (1), which emits light and can be used to create a luminous field (3), a reflective light modulator (12; 13; 14), which can be exposed to light that exits the luminous field (3) and which modulates said light to create an image and a projection optical system (16) connected downstream of the light modulator (12; 13; 14), which can be impinged by the modulated light, to project the image onto the projection surface (17). The invention is characterised in that an optical device (7; 23; 31; 33; 34) is connected upstream of the light modulator (12; 13; 14), said device both focussing the light emanating from the luminous field (3) onto the light modulator ( 12; 13; 14) and also focussing the light modulated by the light modulator (12; 13; 14) onto an intermediate plane (ZE) located upstream of the projection optical system (16), in order to create on said plane (ZE) an intermediate image that can be projected by the projection optical system onto the projection surface.