The invention relates to an illumination device having a housing with a light-exit region and an assembly element arranged below the light-exit region. A conversion element is arranged on the assembly element and designed to convert pump light into emission light in a surface region of the conversion element and to emit said emission light via the surface region. Two surface-emitting laser apparatuses for producing the pump light are arranged opposite one another on the assembly region and are arranged laterally offset to the light-exit region and arranged at a distance from the conversion element and at a distance therefrom. A reflector element connected to the housing is arranged above laser apparatuses and designed to reflect the pump light emitted by the laser apparatuses onto the surface region. The assembly element serves the purpose of heat dissipation for the heat produced and, at the same time, substantial thermal decoupling from the conversion element.