Patent ID: 8393745

Claim:
An illumination device comprising a phosphor having one entrance surface for receiving optical radiation and at least one light emitting surface for emitting phosphor light in a predefined solid angle, a remote light source for emitting said optical radiation and directing it to said entrance surface of the phosphor, a waveguide, and a reflector at least partly arranged around said phosphor, wherein said at least one light emitting surface of the phosphor is optically coupled to the waveguide, an exit surface of the illumination device from which light is emitted is larger than any single light emitting surface of the phosphor, and the reflector is configured for reflecting at least a part of the optical radiation emitted from the illumination device by a surface different from the exit surface of the illumination device, and said at least one light emitting surface of said phosphor having an effective light emitting area which is larger than said entrance surface.