Patent ID: 11927759
Assignee: MAGIC LEAP, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method of operating an optical channel comprising: directing light through an entrance pupil of an optical channel body wherein the optical channel body is configured such that a first distance at the entrance pupil between a front surface and a back surface of the optical channel body is different from a second distance at the exit pupil between the front surface and the back surface, wherein a wedge overlay is located adjacent to the front surface of the optical channel body opposite the entrance pupil, and wherein at least some of the light entering the optical channel body via the entrance pupil is reflected from a front overlay surface of the wedge overlay back into the optical channel body towards the back surface of the optical channel body, wherein the front surface is adjacent to the exit pupil and the optical channel body is a see-through exit pupil expander, wherein a compensating wedge disposed adjacent to a portion of the back surface opposite the exit pupil, said compensating wedge transparent to incident environmental light and geometrically configured to offset exit pupil expansion that the optical channel body imposes on incident environmental light that passes into the optical channel body via the compensating wedge.