Patent ID: 9134596
Filing Date: 2015-09-15
Classification: G02B,G03B,H04N

Abstract:
1. A light module for a projection device, the light module comprising: at least one light source designed to emit partly polarization radiation; and a first polarization beam splitter, which is arranged in the beam path of the radiation emitted by the at least one light source, wherein the polarization beam splitter is designed to provide radiation of a first polarization at a first output and radiation of a second polarization at a second output; wherein the at least one light source comprises: wherein the light module furthermore comprises: a first beam cube having a first input, a second input and a third input and an output, wherein the beam cube is arranged in the beam path of the radiation provided at the first output of the first polarization beam splitter, wherein a first LCD panel is disposed upstream of the first input of the beam cube, a second LCD panel is disposed upstream of the second input of said beam cube and a third LCD panel is disposed upstream of the third input of said beam cube; a second dichroic beam splitter, which is arranged between the first output of the first polarization beam splitter and the first input of the beam cube, wherein the second dichroic beam splitter is designed to be transmissive for radiation in a first wavelength subrange of the predefinable wavelength range and reflective for radiation in a second wavelength subrange of the predefinable wavelength range; a first deflection device, which is designed to deflect radiation reflected by the second dichroic beam splitter into the second input of the beam cube; a second laser device, which is designed and arranged to emit linearly polarized radiation in the blue wavelength range to the third input of the beam cube; and at least one fourth LCD panel arranged in the beam path of the radiation penetrating through the first polarization beam splitter and a second polarization beam splitter, wherein the second polarization beam splitter is arranged to superimpose the radiation provided at the output of the beam cube and at least the radiation that has penetrated through the fourth LCD panel.