Metalens stack on waveguide combiners for ar/vr glasses
AssigneeApplied Materials, Inc.
InventorsJinxin FU, Ludovic GODET
Life of this patent
Estimating the term…
Abstract
Embodiments of the present application generally relate to augmented reality and virtual reality glasses having stacked lenses. The augmented reality (AR) and virtual reality (VR) glasses includes a pair of lenses retained by a frame. A lens stack is utilized in the pair of lenses. The lens stack may include multiple metasurfaces that improve the focus adjustment for both the real and virtual images as well as a prescription lens or prescription metasurface in the lens stack. The metasurfaces are coupled to a waveguide combiner to assist in overlaying virtual images on ambient environments. By utilizing a lens stack, the total weight of the glasses will decrease.
Claims20
An optical device comprising:
- a first waveguide combiner, the first waveguide combiner including:
- one or more first gratings disposed on a first surface of a substrate;
- and
- one or more second gratings disposed on a second surface of the substrate;
- a first encapsulation layer disposed on the one or more first gratings;
- a second encapsulation layer disposed on the one or more second gratings;
- a first metasurface coupled to the first encapsulation layer, the first metasurface including a first plurality of optical device structures;
- and
- a second metasurface coupled to the second encapsulation layer, the second metasurface including a second plurality of optical device structures.
An optical device comprising:
- a waveguide combiner, the waveguide combiner including:
- one or more first gratings disposed on a first surface of a substrate;
- and
- one or more second gratings disposed on a second surface of the substrate;
- a first metasurface coupled to the one or more first gratings, the first metasurface including a first plurality of optical device structures;
- a second metasurface coupled to the one or more second gratings, the second metasurface including a second plurality of optical device structures;
- and
- a third metasurface coupled to the second metasurface, wherein the third metasurface is a prescription metasurface.
An optical device comprising:
- a first waveguide combiner, the first waveguide combiner including:
- one or more first gratings disposed on a first surface of a substrate;
- and
- one or more second gratings disposed on a second surface of the substrate;
- a first encapsulation layer disposed on the one or more first gratings;
- a second encapsulation layer disposed on the one or more second gratings;
- a first metasurface coupled to the first encapsulation layer, the first metasurface including a first plurality of optical device structures, and wherein an ultraviolet (UV) sensitive glue is disposed between the first metasurface and the first encapsulation layer;
- and
- a second metasurface coupled to the second encapsulation layer, the second metasurface including a second plurality of optical device structures, and wherein the UV sensitive glue is disposed between the second metasurface and the second encapsulation layer.
Dependencies are inferred from the claim text.