Lighting apparatus

An illumination apparatus, comprising

• a light generation device for generating a primary light beam,
• a phosphor body configured to be irradiated using the primary light beam, for partially converting primary light of the primary light beam into secondary light, and
• a spectral filter connected downstream from the phosphor body and configured to be more strongly transmissive for the secondary light than for the primary light,
• wherein the spectral filter is arranged along a beam axis of the primary light beam that is incident on the phosphor body, and the spectral filter (2) covers the entire primary-light-dominated region of a light emission pattern of the phosphor body (105);
• and further comprising
• a light sensor (4) arranged such that primary light (P) incident on the spectral filter (2) is able to be reflected into the light sensor (4);
• and wherein
• the spectral filter (2) is applied on a side (6) of the transmitted-light element (107) that faces away from the phosphor body (105);
• the primary light (P) is able to be reflected by the spectral filter (2) through the transmitted-light element (107) to a side (3) that faces the phosphor body (105);
• and
• the side (3) that faces the phosphor body (105) in the region of the reflected primary light (P) takes the form of a TIR-free region.