Waveguide assembly

A waveguide assembly is disclosed. The waveguide assembly includes a first waveguide plate and a second waveguide plate. The first waveguide plate is arranged to receive image-bearing light and magnify a pupil size of the image-bearing light parallel to the first axis. The first waveguide plate comprises a first input coupling device arranged to couple the image bearing light into the first waveguide plate under total internal reflection (TIR) and a first out-coupling region arranged to decouple the image bearing light from the first waveguide plate by means of reflection. The second waveguide plate is arranged to couple at least a portion of the coupled-out image-bearing light from the first waveguide plate into the second waveguide plate and magnify the pupil size parallel to a second axis that is substantially orthogonal to the first axis. The second waveguide plate includes a diffractive coupling-in region and a transmissive diffractive coupling-out region through which a user can view both the real-world