Abstract: A volumetric imaging apparatus is energizable to form an image onto a display surface as an input to a monocentric catadioptric imaging apparatus having a light path for image-bearing light from the display surface, wherein the light path extends substantially symmetrically to a vertical plane that extends through a curved relay mirror and a curved primary mirror. The monocentric catadioptric imaging apparatus has reflective surfaces to fold the light path between the curved relay mirror and the curved primary mirror to condition the distribution of the image-bearing light in a horizontal direction. The light path of the monocentric catadioptric imaging apparatus directs light from the curved primary mirror toward a light input surface of a vertical pupil expander that has a light exit surface that is substantially orthogonal to the vertical plane. The light exit surface directs light through a free-form corrector for convergence and toward a windshield for display.

Abstract: A heads-up display device for displaying graphic elements in view of a user while the user views an environment through a display screen. The heads-up display device includes at least one projector that projects a graphic element on a frontal focal plane in view of the user while the user views the environment through the display screen, and at least one projector that projects a graphic element on a ground-parallel focal plane in view of the user while the user views the environment through the display screen. The projector that projects the graphic element on the frontal focal plane is mounted on an actuator that linearly moves the projector so as to cause the frontal focal plane to move in a direction of a line-of-sight of the user. The projector that projects the ground-parallel focal plane is fixedly arranged such that the ground-parallel focal plane is static.