1. A wearable display device, comprising: a left display lens system configured to form a composite image for viewing; a right display lens system configured to form the composite image for viewing; the left and right display lens systems each comprising: a display panel configured to display an environment image of an environment, the environment image including opaque pixels that form a black silhouette of a virtual image; a first freeform prism inverted relative to a second freeform prism, the first freeform prism configured to project the environment image onto the display panel and the second freeform prism configured to reflect the composite image for viewing; and the composite image formed with the virtual image displayed over the opaque pixels of the environment image to augment reality of the environment that is viewed through the left and right display lens systems.