Display system

A system comprising:

• a head-mountable support;
• an optical system attached to the head-mountable support, wherein the optical system comprises:
• a display panel configured to generate a visible light pattern;
• an infrared light source configured to illuminate a viewing location with infrared light such that infrared light is reflected from the viewing location as reflected infrared light;
• a camera, wherein the camera is configured to image the viewing location based on the reflected infrared light;
• an image former optically coupled to the camera and the display panel, wherein the image former is configured to transmit the reflected infrared light through the image former to the camera, and wherein the image former is configured to reflect at least a portion of the visible light pattern to form a virtual image;
• and
• a proximal beam splitter, wherein the proximal beam splitter is configured to transmit light from a real-world environment through the proximal beam splitter to the viewing location, transmit the visible light pattern from the display panel to the image former, reflect the virtual image from the image former to the viewing location, and reflect the reflected infrared light from the viewing location to the image former;
• a computer, wherein the computer is configured to control the display panel and receive images of the viewing location obtained by the camera.

A method comprising:

• generating a visible light pattern using a display panel;
• forming, by reflection from a concave mirror, a virtual image from the visible light pattern, wherein the virtual image and a field of view of a real-world environment are viewable from a viewing location, wherein the concave mirror is configured to transmit infrared light and reflect visible light;
• illuminating the viewing location with infrared light;
• collecting infrared light reflected from the viewing location;
• transmitting, through the concave mirror, at least a portion of the infrared light collected from the viewing location;
• and
• imaging the viewing location using the collected infrared light transmitted through the concave mirror.