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

Claim 0:
1. An occlusion-capable optical see-through head-mount display (OCOST-HMD), comprising:
a polarization element configured to receive light from a real scene and to produce polarized light at the output thereof;
a polarizing beam splitter (PBS);
an objective lens;
a spatial light modulator (SLM);
an eyepiece lens;
a quarter wave plate (QWP);
a microdisplay; and
a reflective optical element configured to reflect substantially all or a portion of light that is incident thereupon in a first direction, and to transit substantially all or a portion of light received from the microdisplay that is incident thereupon from a second direction, wherein
the SLM and the objective lens form a first double-pass configuration that allows at least a portion of light that passes through the objective lens to be reflected from the SLM based on an occlusion mask that corresponds to a virtual image presented on the microdisplay and to propagate again through the objective lens, and
the eyepiece lens and the reflective optical element form a second double-pass configuration that allows at least a portion of light that passes through the eyepiece lens to be reflected from the reflective optical element and to propagate again through the eyepiece lens.