Examples are disclosed that relate to a display device. One example provides a display device comprising a projector and a pre-expander optic configured to replicate an exit pupil of the projector in at least a first direction, the pre-expander optic comprising a plurality of spectrally-selective pupil-replicating elements to form at least two exit pupils at different spatial locations, each exit pupil being for a different spectral band. The display device further comprises a waveguide comprising at least two incoupling pupils, each incoupling pupil configured to receive light from a corresponding exit pupil of the pre-expander optic, and the waveguide configured to replicate each corresponding exit pupil in at least a second direction and output the light received toward an eyebox.