An illumination device (100, 200, 300) comprising: an energy source configured to excite a photon emitter such that said photon emitter emits a photon when returning to a relaxed state; a first wavelength conversion layer comprising a first wavelength converting medium configured to convert light within said first wavelength range into light within a second wavelength range; a second wavelength conversion layer comprising a second wavelength converting medium; and a periodic plasmonic antenna array comprising a plurality of individual antenna elements, wherein the periodic plasmonic antenna array is in close proximity to at least one of said first wavelength conversion layer and said second wavelength conversion layer, and wherein the first wavelength converting medium of the first wavelength conversion layer and/or the second wavelength converting medium of the second wavelength conversion layer comprises photon emitters configured such that at least a portion of photons emitted from said wavelength conversion layer are emitted by a coupled system comprising said photon emitter and said plasmonic antenna array, such that light emitted from said plasmonic antenna array has an anisotropic angle distribution, characterized in that, the plurality of individual antenna elements are arranged within an antenna plane, the periodic plasmonic antenna array is arranged in at least one of said first wavelength conversion layer and said second wavelength conversion layer; at least a portion of said photon emitters of said wavelength converting medium in said wavelength conversion layer in which said plasmonic antenna array is arranged, is in close proximity of said plasmonic antenna array; said plasmonic antenna array is configured to support plasmonic-photonic lattice resonances at a frequency range corresponding to the wavelength range of said photon emitter in said layer in which said plasmonic antenna array is arranged, and said second wavelength conversion layer is configured to convert light within said second wavelength range into light within a third wavelength range. an energy source configured to excite a photon emitter such that said photon emitter emits a photon when returning to a relaxed state; a first wavelength conversion layer comprising a first wavelength converting medium configured to convert light within said first wavelength range into light within a second wavelength range; a second wavelength conversion layer comprising a second wavelength converting medium; and a periodic plasmonic antenna array comprising a plurality of individual antenna elements, wherein the periodic plasmonic antenna array is in close proximity to at least one of said first wavelength conversion layer and said second wavelength conversion layer, and wherein the first wavelength converting medium of the first wavelength conversion layer and/or the second wavelength converting medium of the second wavelength conversion layer comprises photon emitters configured such that at least a portion of photons emitted from said wavelength conversion layer are emitted by a coupled system comprising said photon emitter and said plasmonic antenna array, such that light emitted from said plasmonic antenna array has an anisotropic angle distribution, characterized in that, the plurality of individual antenna elements are arranged within an antenna plane, the periodic plasmonic antenna array is arranged in at least one of said first wavelength conversion layer and said second wavelength conversion layer; at least a portion of said photon emitters of said wavelength converting medium in said wavelength conversion layer in which said plasmonic antenna array is arranged, is in close proximity of said plasmonic antenna array; said plasmonic antenna array is configured to support plasmonic-photonic lattice resonances at a frequency range corresponding to the wavelength range of said photon emitter in said layer in which said plasmonic antenna array is arranged, and said second wavelength conversion layer is configured to convert light within said second wavelength range into light within a third wavelength range.