Patent ID: 8988463
Filing Date: 2015-03-24
Classification: G02B,G06T,G09G

Abstract:
1. In a see-through display system having an electronically controlled adaptive diverging optic and an electronically controlled adaptive converging optic, a method to present a display image and an external image to a viewer, wherein the external image is an image of a scene opposite the viewer and includes a background subject, the method comprising: forming the display image by an image former, wherein the image former is disposed between the adaptive converging optic and the adaptive diverging optic; guiding the display image and the external image along an axis that passes through the adaptive diverging optic and leads to a pupil of the viewer; determining a distance to the background subject; receiving data responsive to the distance to the background subject; calculating a target focal plane for the display image based on the data responsive to the distance to the background subject; adjustably converging the external image at the adaptive converging optic; and adjustably diverging the display image and the external image at the adaptive diverging optic to bring the display image into focus at the target focal plane.