Patent ID: 11861941
Assignee: APPLE INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A head-mounted display (HMD) that displays visual content for viewing by a user, wherein the HMD comprises:
a headset, a helmet, goggles, or glasses, including:
a plurality of light sources that are configured to emit light towards a user's eye;
a camera configured to face toward the user's eye and configured to capture images of the user's eye;
at least one light polarizing element located on a light path from the light sources to the camera; and
a display configured to display images;
an eyepiece having refractive power and configured to be located between the user's eye and the display,
wherein at least one of the camera or the light sources are configured to be located between the user's eye and the display; and

a controller comprising one or more processors, wherein the controller is configured to analyze polarized light images captured by the camera to perform iris recognition for the user.