Wearable pupil-forming display apparatus

A wearable display apparatus comprising a headset that is configured for display from a left-eye optical system and a right-eye optical system, wherein each optical system defines a corresponding exit pupil for a viewer along a view axis and comprises:

• (a) an electroluminescent image generator that is energizable to direct image-bearing light for a 2D image from an emissive surface along an optical path;
• (b) a curved reflective surface disposed along the view axis and partially transmissive, wherein the curved reflective surface defines a curved intermediate focal surface;
• (c) a beam splitter disposed along the view axis and oriented to reflect light toward the curved reflective surface;
• (d) an optical image relay that is configured to optically conjugate the formed 2D image at the image generator with the curved intermediate focal surface, wherein the optical image relay comprises:
• (i) a prism having an input surface facing toward the emissive surface of the image generator, an output surface facing toward the curved intermediate focal surface, and a folding surface extending between the input and output surfaces and configured for folding the optical path for light generated by the image generator, wherein an aperture stop for the relay is formed within the prism;
• (ii) at least a first plano-aspheric lens in optical contact against the prism input surface and configured to form the aperture stop within the prism and to guide the image-bearing light from the image generator toward the folding surface;
• wherein the relay, curved mirror, and beam splitter are configured to form the exit pupil for viewing the generated 2D image superimposed on a portion of a visible object scene,
• wherein combined images from both left- and right-eye optical systems form a 3D image for the viewer;
• and
• (e) a plurality of sensors coupled to the headset and configured to acquire measured data relating to the viewer.