An illumination device having a number of light sources and a number of light collectors. The light collectors collect light generated by the light sources and convert the light into a source light beam propagating primarily along a primary optical axis. The light sources and the light collectors can be part of a light source module. The light source module can include a cooling module comprising a number of interconnected plane mounting surfaces angled in relation to each other, with the light sources arranged on said plane mounting surfaces. The cooling module can include a first side comprising the mounting surfaces and a second side comprising a number of cooling fins defining a number of radial air channels.