BACKGROUND

Display technology is advancing in the areas of augmented reality (AR) and virtual reality (VR) to provide users with more immersive visual experiences. For example, in some AR applications, generated imagery can be displayed to a user via a transparent display that also allows the user to view the surrounding physical environment. The generated imagery enhances or augments the user's experience or knowledge of the surrounding physical environment.

In some implementations a display system may generate an image that can be spatially propagated from one position to another position in an optical system, typically through an optical waveguide. For example, in a near-eye display (NED) device, an optical waveguide made of a substrate can spatially translate propagating light waves representing imagery generated by a display engine and convey them along an optical path toward one or both eyes of a user. Such technology may be incorporated into an NED device in the form of eyeglasses, goggles, a helmet, a visor, or some other type of head-mounted display (HMD) device or eyewear.

However, for typical NED devices, reproduction of an image having a wide field of view (FOV) can be difficult, as existing display system technologies utilized in the NED devices are limited in their range of motion, thus causing the resulting generated image to be limited in its FOV. Moreover, existing display system technologies may be limited in their axes of motion, resulting in an unrealistic image. As such, there remain difficulties in generating a wide FOV image that can produce a realistic augmented experience for a user of the NED device.

