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

Claim 21:
22. 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 hinge includes a first half hinge and a second half hinge, the first half hinge and the second half hinge configured to be pivotally connected by the hinge pin, and
wherein the first half hinge includes a tab and the second half hinge includes a tab receiver, whereby the flex cable is covered when the second half hinge is pivoted relative to the first half hinge.