Abstract: Systems and methods for managing multi-objective alignments in imprinting (e.g., single-sided or double-sided) are provided. An example system includes rollers for moving a template roll, a stage for holding a substrate, a dispenser for dispensing resist on the substrate, a light source for curing the resist to form an imprint on the substrate when a template of the template roll is pressed into the resist on the substrate, a first inspection system for registering a fiducial mark of the template to determine a template offset, a second inspection system for registering the imprint on the substrate to determine a wafer registration offset between a target location and an actual location of the imprint, and a controller for controlling to move the substrate with the resist below the template based on the template offset, and determine an overlay bias of the imprint on the substrate based on the wafer registration offset.

Abstract: In some embodiments, a head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting. The spacers are disposed on one major surface of each of the waveguides and indentations are provided on an opposite major surface of each of the waveguides. The indentations are sized and positioned to align with the spacers, thereby forming a self-aligned stack of waveguides. Tops of the spacers may be provided with light scattering features, anti-reflective coatings, and/or light absorbing adhesive to prevent light leakage between the waveguides. As seen in a top-down view, the spacers may be elongated along the same axis as the diffractive optical elements. The waveguides may include structures (e.g.

Abstract: Virtual reality (VR), augmented reality (AR), and/or mixed reality (MR) systems may enable one or more users to connect two or more connectable objects together. These connectable objects may be real objects from the user's environment, virtual objects, or a combination thereof. A preview system may be included as a part of the VR, AR, and/or MR systems that provide a preview of the connection between the connectable objects prior to the user(s) connecting the connectable objects. The preview may include a representation of the connectable objects in a connected state along with an indication of whether the connected state is valid or invalid. The preview system may continuously physically model the connectable objects while simultaneously displaying a preview of the connection process to the user of the VR, AR, or MR system.

Abstract: A method includes rendering a foveated image that includes a foveated zone and a peripheral zone. The foveated zone has a first set of image data and is rendered at a first pixel resolution and the peripheral zone has a second set of image data and is rendered at a second, lower, pixel resolution. The method also includes packing the first set of image data into a first image block, packing the second set of image data into a second image block, and generating a control packet that includes rendering information associated with the foveated image. The method further includes concatenating the control packet with the first image block and the second image block to form a frame, transmitting the frame to a display unit, parsing the control packet, decoding the control packet to obtain the rendering information, and projecting a display image rendered according to the rendering information.

Abstract: An augmented reality (AR) device can be configured to generate a virtual representation of a user's physical environment. The AR device can capture images of the user's physical environment to generate a mesh map. The AR device can project graphics at designated locations on a virtual bounding box to guide the user to capture images of the user's physical environment. The AR device can provide visual, audible, or haptic guidance to direct the user of the AR device to look toward waypoints to generate the mesh map of the user's environment.

Abstract: A user may interact and select positions in three-dimensional space arbitrarily through conversion of a two-dimensional positional input into a three-dimensional point in space. The system may allow a user to use one or more user input devices for pointing, annotating, or drawing on virtual objects, real objects or empty space in reference to the location of the three-dimensional point in space within an augmented reality or mixed reality session.

Abstract: An extended reality (XR) system, comprises a head-mounted display (HMD) configured for displaying virtual content to a user, a first altimeter carried by the HMD, a hand-held control, and a second altimeter carried by the hand-held control. The first altimeter configured for outputting first atmospheric pressure data indicative of an elevation of the HMD, while the second altimeter is configured for outputting second atmospheric pressure data indicative of an elevation of the hand-held control. The XR system further comprises at least one processor configured for determining a relative elevation between the first altimeter and the second altimeter based on the first atmospheric pressure data and the second atmospheric pressure data.

Abstract: A method includes receiving a first image captured by a content capture device, identifying a first object in the first image and determining a first update to a first setting of the content capture device. The method further includes receiving a second image captured by the content capture device, identifying a second object in the second image, and determining a second update to a second setting of the content capture device. The method further includes updating the first setting of the content capture device using the first update, receiving a third image using the updated first setting of the content capture device, updating the second setting of the content capture device using the second update, receiving a fourth image using the updated second setting of the content capture device, and stitching the third image and the fourth image together to form a composite image.

Abstract: A computer implemented method for generating audio for use with a head-mounted display system includes obtaining a frequency response data of a speaker coupled to the head-mounted display system. The method also includes comparing the frequency response data of the speaker with a target speaker response. The method further includes computing a coefficient for a filter system based on a result of comparing the frequency response data of the speaker with the target speaker response. Moreover, the method includes generating the audio using the filter system and the coefficient to compensate for a characteristic of the speaker.

Abstract: System and methods for performing gait analysis diagnosis, and rehabilitation and real-time feedback for treating gait disorders using extended reality, such as augmented reality. Image data is captured using native camera(s) on an extended reality headset worn by a subject while walking. The images are analyzed using a location and mapping algorithm to determine head-pose data regarding a position and location of the head of the subject. One or more gait attributes of a gait of the subject by analyzing the head-pose data using a gait-metric prediction algorithm. The gait attributes are analyzed to determine gait disorders, rehabilitation treatment, rehabilitation assessments, and/or rehabilitation feedback.

Abstract: Methods and systems for triggering presentation of virtual content based on sensor information. The display system may be an augmented reality display system configured to provide virtual content on a plurality of depth planes using different wavefront divergences. The system may monitor information detected via the sensors, and based on the monitored information, trigger access to virtual content identified in the sensor information. Virtual content can be obtained, and presented as augmented reality content via the display system. The system may monitor information detected via the sensors to identify a QR code, or a presence of a wireless beacon. The QR code or wireless beacon can trigger the display system to obtain virtual content for presentation.

Abstract: A method for displaying an image using an eyepiece waveguide includes emitting light from a first laser and emitting light from a second laser. The method also includes receiving light from the first laser at a first polarization selective reflector, reflecting, using the first polarization selective reflector, light from the first laser at a first angle to a scanning mirror, and receiving light from the second laser at a second polarization selective reflector. The method further includes reflecting, using the second polarization selective reflector, light from the second laser at a second angle to the scanning mirror, receiving light reflected by the scanning mirror at an input coupling port of the eyepiece waveguide, and projecting the image from an output port of the eyepiece waveguide.

Abstract: A method includes rendering an original image at a first processor, encoding the original image to provide an encoded image, and transmitting the encoded image to a second processor. The method also includes decoding the encoded image to provide a decoded image, determining an eye gaze location, splitting the decoded image into N sections based on the eye gaze location, and processing N-1 sections of the N sections to produce N-1 secondary quality sections. The method further includes processing one section of the N sections to provide one primary quality section, combining the one primary quality section and the N-1 secondary quality sections to form a foveated image, and transmitting the foveated image to a display.

Abstract: A wearable display system includes a mixed reality display for presenting a virtual image to a user, an outward-facing imaging system configured to image an environment of the user, and a hardware processor operably coupled to the mixed reality display and to the imaging system. The hardware processor is programmed to generate a virtual remote associated with a parent device, render the virtual remote and the virtual control element on the mixed reality display, determine when the user of the wearable system interacts with the virtual control element of the virtual remote, and perform certain functions in response to user interaction with a virtual control element of the virtual remote. These functions may include generation the virtual control element to move on the mixed reality display; and when movement of the virtual control element surpasses a threshold condition, generate a focus indicator for the virtual control element.

Abstract: A head-mounted display system includes a waveguide configured to guide light from a light projection system coupled into the waveguide; a grating structure optically coupled to the waveguide, the grating structure being configured to couple light from the light projection system into the waveguide. The grating structure includes a grating layer having a grating with multiple ridges having ablaze profile in at least one cross-section, the blaze profile having an anti-blaze angle of 85° or less; and one or more additional layers on the grating layer, the additional layers including a first layer of a material having a refractive index of 1.5 or less at an operative wavelength of the head-mounted display, the first layer being an outermost layer of the grating structure.

Abstract: A method of forming a foveated image includes (a) setting dimensions of a first region, (b) receiving an image having a first resolution, and (c) forming the foveated image including a primary quality region having the dimensions of the first region and the first resolution and a secondary quality region having a second resolution less than the first resolution. The method also includes (d) outputting the foveated image, (e) determining an eye gaze location, and (f) determining an eye gaze velocity. If the eye gaze velocity is less than a threshold velocity, the method includes decreasing the dimensions of the primary quality region and repeating (b)-(f). If the eye gaze velocity is greater than or equal to the threshold velocity, the method includes repeating (a)-(f).

Abstract: Neutral avatars are neutral with reference physical characteristics of the corresponding user, such as weight, ethnicity, gender, or even identity. Thus, neutral avatars may be desirable to use in various copresence environments where the user desires to maintain privacy with reference to the above-noted characteristics. Neutral avatars may be configured to convey, in real-time, actions and behaviors of the corresponding user without using literal forms of the user's actions and behaviors.

Abstract: An augmented reality display system is configured to direct a plurality of parallactically-disparate intra-pupil images into a viewer's eye. The parallactically-disparate intra-pupil images provide different parallax views of a virtual object, and impinge on the pupil from different angles. In the aggregate, the wavefronts of light forming the images approximate a continuous divergent wavefront and provide selectable accommodation cues for the user, depending on the amount of parallax disparity between the intra-pupil images. The amount of parallax disparity is selected using a light source that outputs light for different images from different locations, with spatial differences in the locations of the light output providing differences in the paths that the light takes to the eye, which in turn provide different amounts of parallax disparity.

Abstract: Embodiments of the present disclosure can provide systems and methods for presenting audio signals based on an analysis of a voice of a speaker in an augmented reality or mixed reality environment. Methods according to embodiments of this disclosure can include receiving audio data from a microphone of a first wearable head device, the first wearable head device in communication with a virtual environment, the audio data comprising speech data. In some examples, the methods can include identifying a voice parameter based on the audio data. In some examples, the methods can include determining an acoustic parameter based on the voice parameter. In some examples, the methods can include applying the acoustic parameter to the audio data to generate a spatialized audio signal. In some examples, the methods can include presenting the spatialized audio signal to a second wearable head device in communication with the virtual environment.