Patent ID: 9740004
Date: 2017-08-22
CPC Classifications: G02B

Claim:
1. A volumetric imaging apparatus comprising: a volumetric image generator that is energizable to form an image on a display surface as an input to a monocentric catadioptric imaging apparatus, the monocentric catadioptric imaging apparatus having a light path for image-bearing light from the display surface, wherein the light path extends substantially symmetrically with respect to a vertical plane that extends through a curved relay mirror and a curved primary mirror, wherein the monocentric catadioptric imaging apparatus comprises a plurality of reflective surfaces disposed 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 that is substantially orthogonal to the vertical plane, wherein 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, wherein the vertical pupil expander has a light exit surface that is substantially orthogonal to the vertical plane, and wherein the light exit surface directs light through a free-form corrector for horizontal convergence and toward a windshield for display.