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

Claim 22:
23. 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 rear section, a left rear section, a right eye see-through section, and a left eye see-through section;
a left hinge system positioned between the left temple section and the left rear section of the frame;
a right hinge system positioned between the right temple section and the right rear section of the frame;
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;

wherein at least one of the left hinge system and the right hinge system include a flex cable, a hinge, a hinge housing, and a hinge pin,
wherein the flex cable includes at least six points of bend, four of the at least six points of bend of the flex cable being configured to surround the hinge pin.