Head mounted imaging apparatus with rotating optical coupling

Abstract

A virtual image display apparatus including a projector operable to direct image-bearing light beams along a projection axis, a waveguide having an in-coupling diffractive optic and an out-coupling diffractive optic, wherein the waveguide is oriented at an obtuse angle with respect to the projection axis, and an optical coupler configured to receive the image-bearing light beams along the projection axis, reorient the projection axis to an acute angle of incidence with respect to the waveguide, rotate the image-bearing light beams from a first orientation to a second orientation with respect to the projection axis, and direct the rotated image-bearing light beams along the reoriented projection axis to the in-coupling diffractive optic.

Dependencies are inferred from the claim text.