Patent ID: 9664993
Date: 2017-05-30
CPC Classifications: G02B,G03B

Claim:
1. A light module for a projection device comprising: a first excitation radiation source, which is configured to emit a first excitation radiation having at least one first value of an optical property; a second excitation radiation source, which is configured to emit a second excitation radiation having at least one second value of an optical property, wherein the second value differs from the first value; at least one phosphor adapted to convert the first excitation radiation into a first conversion radiation and the second excitation radiation into a second conversion radiation; a first dichroic mirror, which is arranged in the beam path between the first excitation radiation source and a predefinable irradiation region; a second dichroic mirror, which is arranged in the beam path between the second excitation radiation source and the predefinable irradiation region; a first focusing device, which is arranged in the beam path between the first dichroic mirror and the predefinable irradiation region; a second focusing device, which is arranged in the beam path between the second dichroic mirror and the predefinable irradiation region; an output at which the first and the second conversion radiation can be provided; and at least one optical element which is at least partly reflective with maintenance of the respective value of the at least one optical property of the first and the second excitation radiation and which can be arranged at the predefinable irradiation region at least during predefinable time periods, wherein the first optical path proceeding from the first excitation radiation source successively comprises the first dichroic mirror, the first focusing device, the predefinable irradiation region, the second focusing device and the second dichroic mirror, and wherein the second optical path proceeding from the second excitation radiation source successively comprises the second dichroic mirror, the second focusing device, the predefinable irradiation region, the first focusing device and the first dichroic mirror.