Patent ID: 8684555

Claim:
Light delivery device comprising: at least one LED which emits light in a wavelength range of â‰§220 nm to â‰¦800 nm, at least one auxiliary LED which emits light in a wavelength range of 220 nm to 600 nm, wherein the at least one auxiliary LED is electrically connected to circuitry for activating the at least one auxiliary LED independently of the at least one LED, and at least one conversion element placed in a path of light emitted by the at least one LED and by the at least one auxiliary LED, wherein: the at least one conversion element emits red light; the at least one conversion element comprises a ceramic conversion material; a wavelength converting substance is disposed between the at least one LED and the at least one conversion element; and the at least one auxiliary LED is arranged such that activating the at least one auxiliary LED shifts a color temperature of light emitted by the device toward red while maintaining light flux from the device.