Patent ID: 11906736
Assignee: RAYTRX, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A wearable display apparatus comprising:
an image generator that forms a 2D image;
a partially transmissive mirror having a curved focal surface and a partially transmissive curved reflective surface;
a beam splitter disposed to reflect light toward the partially transmissive mirror, wherein the curved focal surface is defined in a space between the partially transmissive curved reflective surface and the beam splitter; and
an optical image relay positioned between the image generator and the beam splitter, and configured to conjugate the formed 2D image from the image generator to the curved focal surface of the partially transmissive mirror, the optical image relay includes:
a right-angle prism having a prism input surface, a prism output surface, and a folding surface extending from the prism input surface to the prism output surface, the folding surface is configured to fold an optical path for light generated by the image generator towards the beam splitter;
a first plano-aspheric lens in optical contact against the prism input surface and configured to guide light from the image generator toward the folding surface and to form an aperture stop for the optical image relay at the folding surface;
a doublet positioned between the first plano-aspheric lens and the image generator;
a meniscus singlet lens positioned between the doublet and the image generator; and
a concave-plano field lens positioned between the meniscus singlet and the image generator;
wherein the optical image relay, the partially transmissive mirror, and the beam splitter are configured to form an exit pupil for viewing the 2D image superimposed on a portion of a visible object scene.