ILLUMINATING DEVICE, PROJECTOR AND CAMERA

摘要

Disclosed is an illuminating device comprising a solid-state light-emitting element and a reflecting unit. The solid-state light-emitting element has a light source and a phosphor, and emits light from the light source and fluorescence from the phosphor excited by the light from the light source to an optical system. The reflecting unit reflects the light emitted from the solid-state light-emitting element and not incident on the optical system back to the solid-state light-emitting element for exciting the phosphor by the reflected light of the light source.