Patent ID: 9170423
Filing Date: 2015-10-27
Classification: F21V,G02B,G03B,H04N

Abstract:
1. A light module for a projection apparatus, comprising: a laser apparatus adapted to emit linearly polarized radiation in a blue wavelength range; a luminous wheel arranged in the beam path of the radiation emitted by the laser apparatus; a first beam splitter arranged in the beam path of the radiation emitted by the laser apparatus between the laser apparatus and the luminous wheel; a focusing apparatus arranged in the beam path of the radiation emitted by the laser apparatus between the first beam splitter and the luminous wheel; and at least one polarization manipulation apparatus, arranged in the beam path of the radiation emitted by the laser apparatus between the first beam splitter and the luminous wheel, which is adapted to rotate the polarization of radiation that has passed through it twice in different directions through 90°, wherein the first beam splitter is arranged in the beam path of radiation in the blue wavelength range which has passed twice through the polarization manipulation apparatus in different directions.