Intel Patent | Metasurface Devices For Display And Photonics Devices

Patent: Metasurface Devices For Display And Photonics Devices

Publication Number: 20200200951

Publication Date: 20200625

Applicants: Intel

Abstract

Disclosed herein are display and photonic devices utilizing metasurfaces. An optical device comprising an optical component and an optical transmission medium is disclosed. A waveguide couples the optical component and the optical transmission medium. A metasurface is disposed on an end of the waveguide and arranged to increase an optical coupling between the waveguide and the optical transmission medium. Additionally, a display comprising a number of light emitting elements and a metasurface for each of the light emitting elements. The metasurface arranged to eliminate screen door effect in virtual reality display systems.

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of, claims the benefit of and priority to previously filed U.S. patent application Ser. No. 16/229,751 filed Dec. 21, 2018 entitled “METASURFACE DEVICES FOR DISPLAY AND PHOTONICS DEVICES”, which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

[0002] Embodiments herein generally relate to surfaces and structures formed upon surfaces to guide light.

BACKGROUND

[0003] Many modern technological systems and/or methods implement some form of photonics. For example, many modern technological systems and/or methods implement some form of light (e.g., photon) generation, light detection, and/or light manipulation. Silicon photonic applications rely heavily on waveguides to guide light. However, forming lenses, prisms, or other structures from waveguides can be problematic.

[0004] One application of photonics is in head mounted displays, virtual reality display, or augmented reality displays. However, conventional displays implemented as head mounted, virtual, or augmented displays typically have a much narrower field of view than the user. However, as displays are magnified to cover larger fields of view, what is referred to as the “screen door effect” becomes more prevalent. The screen door effect refers to dark spaces between pixels that become noticeable to a user as the perceived image is magnified.

[0005] Another application of photonics is stereo and structured light projectors. Such projectors typically rely on a combination of lasers and refractive or diffractive optics. However, these optics add bulk as well as additional components to the projectors, increasing their complexity and cost. Another application of photonics is to filter some portion of light. However, conventional filtering techniques require additional lenses, prisms, or waveguides to filter light, thereby increasing bulk and cost of the devices.

BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIGS. 1A-1C illustrate examples of a nano-structure and metasurface.

[0007] FIG. 2 illustrates an example optical transceiver.

[0008] FIG. 3 illustrates an example demultiplexer.

[0009] FIGS. 4A-4B illustrate an example display for a virtual reality system.

[0010] FIG. 5 illustrates an example sub-pixel display.

[0011] FIG. 6 illustrates another example display for a virtual reality system.

[0012] FIG. 7 illustrates the example display of FIG. 6 dispersing light emitted from the display.

[0013] FIG. 8 illustrates an example logic flow.

[0014] FIG. 9 illustrates an example computer-readable medium.

[0015] FIG. 10 illustrates an example device comprising a metasurface optical component.