A near-eye display system comprising: a near-eye support structure; a near-eye display supported by the near-eye support structure, the near-eye display including a waveguide having a plurality of layers (160a, 160b); the waveguide having an input grating (144a, 144b) for each of the plurality of layers, and at least one of the layers having an input grating having a wavelength band extensive with a waveband including a first waveband for a first color narrower than a full spectral bandwidth for the first color and a second waveband for a second color adjacent to the first color in a visible spectrum; an image generation unit supported by the near-eye support structure, the image generation unit comprising: a converted green light emitting diode for emitting light of the first color with a spectral bandwidth extending below 515nm; a filter configured to receive the emitted light of the first color and narrow the spectral bandwidth emitted for the first color to the first waveband which is spectrally closer to the second waveband for the adjacent second color; and a second light emitting diode for emitting light of the second color; and the waveguide being optically coupled to the image generation unit for receiving image light comprising at least a portion of the spectral bandwidth of the emitted light of the second color and only the narrowed spectral bandwidth of the filtered emitted light of the first color for optical coupling by the input grating having the wavelength band extensive with the waveband including the first waveband and the second waveband. a near-eye support structure; a near-eye display supported by the near-eye support structure, the near-eye display including a waveguide having a plurality of layers (160a, 160b); the waveguide having an input grating (144a, 144b) for each of the plurality of layers, and at least one of the layers having an input grating having a wavelength band extensive with a waveband including a first waveband for a first color narrower than a full spectral bandwidth for the first color and a second waveband for a second color adjacent to the first color in a visible spectrum; an image generation unit supported by the near-eye support structure, the image generation unit comprising: a converted green light emitting diode for emitting light of the first color with a spectral bandwidth extending below 515nm; a filter configured to receive the emitted light of the first color and narrow the spectral bandwidth emitted for the first color to the first waveband which is spectrally closer to the second waveband for the adjacent second color; and a second light emitting diode for emitting light of the second color; and a converted green light emitting diode for emitting light of the first color with a spectral bandwidth extending below 515nm; a filter configured to receive the emitted light of the first color and narrow the spectral bandwidth emitted for the first color to the first waveband which is spectrally closer to the second waveband for the adjacent second color; and a second light emitting diode for emitting light of the second color; and the waveguide being optically coupled to the image generation unit for receiving image light comprising at least a portion of the spectral bandwidth of the emitted light of the second color and only the narrowed spectral bandwidth of the filtered emitted light of the first color for optical coupling by the input grating having the wavelength band extensive with the waveband including the first waveband and the second waveband.