Patent ID: 11921289
Assignee: VUZIX CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC F  G  H

Claim 18:
19. A personal display device for displaying virtual images to a wearer, comprising:
a frame having a right temple section, a left temple section, a right eye see-through section, and a left eye see-through section;
a projection display device connected to the frame operable to project image-bearing light beams;
at least one waveguide stack module connected to the frame, the at least one waveguide stack module operable to propagate image-bearing light beams along a length of the at least one waveguide stack module, the at least one waveguide stack module being configured to receive the image-bearing light beams from the projection display device, the at least one waveguide stack module including:
an in-coupling diffractive optic formed along the at least one waveguide stack module operable to diffract at least a portion of the image-bearing light beams from the projection display device into the at least one waveguide stack module in an angularly encoded form; and
an out-coupling diffractive optic spaced apart from the in-coupling diffractive optic along the length of the at least one waveguide stack module operable to diffract at least a portion of the image-bearing light beams from the at least one waveguide stack module in an angularly decoded form for viewing the image-bearing light beams from the projection display device;
a waveguide housing;
an outer cover and an inner cover arranged to seal the in-coupling diffractive optic and the out-coupling diffractive optic within the waveguide housing;
a seal located about a perimeter of the outer cover, sealing the outer cover to the waveguide housing; and
a gasket sealing the inner cover to the waveguide housing.