A lighting apparatus includes a first semiconductor light source configured to produce a first primary light beam, a second semiconductor light source configured to produce a second primary light beam, a phosphor volume configured to at least partly convert primary light into secondary light, a first deflection element configured to deflect the first primary light beam onto the phosphor volume, a second deflection element configured to deflect the second primary light beam onto the phosphor volume, a first light sensor which is sensitive to at least the primary light, and a second light sensor. The first deflection element is partly transmissive for the first primary light beam. The first light sensor can be irradiated by the component of the primary light beam which is transmitted by the first deflection element. The second light sensor can be irradiated by light which can be emitted by the phosphor volume.