A light splitter with layered materials of higher and lower refractive indices

摘要

The light splitter comprises two separate layer systems 5, 7 each reflecting and transmitting colour-selectively and which are applied or embedded on at least one transparent base body such as X-cube 2. At least one of the layer systems comprises layers of material with different refractive indices, the lower refractive index being 1.7-2.1. Reflected polarised light is provided by blue, green and red reflected light valves RLVB, RLVG, RLVR. Also shown in Fig 13 is polarisation beam splitter 13 with layer system 10 which lets P-polarised light P pass and deflects S-polarised light S. A separate invention relates to the tilting of at least one emergent face for the red, green and blue light and specifies that d , which is the deviation of the normal of the face FRLV from the emerging light, be & 5{.