Patent ID: 11885968
Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. An occlusion-capable optical see-through head-mount display (OCOST-HMD), comprising:
a polarizer to produce polarized light associated with a real scene;
a beam splitter (PBS);
an objective lens;
a spatial light modulator (SLM);
an eyepiece lens;
a retarder;
a microdisplay; and
a half-mirror configured to reflect substantially all of light associated with an occlusion mask that is incident thereupon in a first direction, and to transit substantially all of light associated with a virtual scene that is incident thereupon from a second direction, wherein
the PBS is positioned to:
receive and direct the polarized light toward the SLM,
receive and direct the light associated with the virtual scene toward a position for viewing by a user's eye, and
receive and direct the light associated with the occlusion mask toward the half mirror, wherein the occlusion mask corresponds to a virtual image presented on the microdisplay

the SLM is configured to modulate the light incident thereon in accordance with a two-dimensional shape of the occlusion mask, and
the OCOST-HMD is configured to produce an erect image, and the position of a user's pupil, or relayed pupil, is mapped to the position of the user's eye to enable a correct view point disparity to be maintained.