Abstract: An optical waveplate is provided. The optical waveplate includes a plurality of liquid crystal (“LC”) layers stacked together. At least one of the plurality of LC layers includes LC molecules that are in-plane switchable by an external field to switch the optical waveplate between states of different phase retardances.

Abstract: An apparatus comprises a first photodiode, a second photodiode, a charge sensing unit, a quantizer, a memory, and a controller configured to: set a first exposure period in which the first photodiode generates a first charge; set a second exposure period in which the second photodiode generates a second charge, the second exposure period being set based on the first exposure period and at least one of: a first time associated with a read out operation of the memory to a second apparatus, or a second time associated with a quantization operation by the quantizer; perform, using the quantizer, the first quantization operation of the first charge to generate a first digital output; store the first digital output in the memory; perform, using the quantizer, a second quantization operation of the second charge to generate a second digital output; and store the second digital output in the memory.

Abstract: A near-eye-display (NED) includes a tracking system and a waveguide assembly. The waveguide assembly includes an infrared (IR) light source and an output waveguide. The output waveguide includes at least a decoupling element that outcouples the IR light emitted by the IR light source to form the structured light pattern. The structured light pattern is projected toward one or more regions of a user's face, for example, the user's eyes. The structured light pattern is reflected off the one or more regions of the user's face and captured by the tracking system. The tracking system can determine tracking information such as eye tracking information as well as face tracking information based on the captured reflected structured light pattern.

Abstract: A system for content upsampling comprises a console and a head-mounted display (HMD). The console can select content for presentation and provide the content at a first frame rate. The HMD outputs fast calibration data comprising one or more intermediate estimated positions of a reference point on the HMD. The HMD estimates future positions of the HMD using the fast calibration data, and generates synthetic frames using frames from the content and the future positions of the HMD. The HMD then upsamples the content from the first frame rate to a second frame using the synthetic frames to generate augmented content, wherein the second frame rate is faster than the first frame rate. The HMD presents the augmented content at the second frame rate via an electronic display.

Abstract: To manufacture a device by picking and placing semiconductor devices from a carrier substrate to a target substrate using touch down sensors, a pick-up head including touch down sensors and the semiconductor devices on the carrier substrate are moved relative to each other to contact the carrier substrate with the touch down sensors. Signals from each touch down sensor indicating a degree of deformation of each touch down sensor caused by the contact with the carrier substrate are used to determine an orientation of the pick-up head by processing the signals, and adjust the orientation of the pick-up head based on the determined orientation to attach the semiconductor devices onto the pick-up head. In some embodiments, the touch down sensors are piezoelectric benders.

Abstract: The disclosed apparatus may include (1) a subassembly that includes (a) a plurality of conductive coils, where the coils are arranged into first and second rows that are aligned as adjacent layers along a first direction, and where the rows are offset along the first direction such that two portions of each of the coils are arranged along the first direction without overlapping and each of the two portions of each coil is aligned in parallel along a second direction orthogonal to the first direction, and (b) a body that holds the coils, (2) a structure that generates a magnetic field through the portions of the coils, where the magnetic field is directed along a third direction orthogonal to the first and second directions, and (3) a coil driver circuit that supplies current to at least some of the coils to move the structure relative to the subassembly, or vice-versa, along the first direction. Various other embodiments are also disclosed.

Abstract: Systems, methods, and non-transitory computer readable media can determine a placement in a camera view for displaying an augmented reality (AR) advertisement, where the camera view is associated with a computing device. An AR advertisement for a user associated with the computing device can be determined based on attributes associated with the user. Display of the AR advertisement can be caused at the determined placement in the camera view.

Abstract: An optical system includes a substrate and a polarization volume hologram (PVH) composite film formed over the substrate. The PVH composite film includes a first PVH layer formed over the substrate and having a helix twist of a first handedness, and a second PVH layer coupled to the first PVH layer and having a helix twist of a second handedness orthogonal to the first handedness. The first PVH layer is configured to reflect and converge circularly polarized light having the first handedness. The second PVH layer is configured to reflect and converge circularly polarized light having the second handedness.

Abstract: A media device may include (i) a display device having a front side including a display surface, (ii) a support housing for supporting the display device in each of a plurality of alternative orientations on an external surface, the support housing extending from a back side of the display device between a mounting surface of the support housing abutting the back side of the display device and a distal end of the support housing, (iii) a coupling member disposed at the mounting surface of the support housing and mounted to the display device, and (iv) a battery power supply disposed within the support housing and electrically coupled to the display device via an electrical path extending through the coupling member. Various other systems, devices, assemblies, and methods are also disclosed.

Abstract: An audio system for a headset includes a plurality of speakers and an audio controller. The plurality of speakers may be in a dipole configuration that cancel sound leakage into a local area of the headset. The controller filters audio content presented by the plurality of speakers to further mitigate leakage of audio content into the local area. The audio determines sound filters based on environmental conditions, such as ambient noise levels, as well as based on the audio content being presented.

Abstract: In one embodiment, a computing system may access a first image that is generated at a first frame rate. The system may determine whether a change of a user viewpoint with respect to one or more display contents satisfies a threshold criterion. The system may select an operation mode from a first operation mode and a second operation mode based on the determination whether the change of the user viewpoint satisfies the threshold criterion. The system may generate a number of second images at a second frame rate higher than the first frame rate. When the selected operation mode is the first operation mode, the second images may be generated using a resampling process. When the selected operation mode is the second operation mode, the second images may be generated by transforming one or more previously generated second images that are generated based on the first image.

Abstract: In one embodiment, a computing system may determine network metrics for geographic regions connected by a communication network. The geographic regions may include a geographic region of interest impacted by a network deployment. The system may identify candidate control regions by clustering geographic regions of into a first group based on metric feature of network metric shared by the geographic regions. The system may select control regions by identifying a second group of geographic regions from the first group of geographic regions based on a comparison between the region of interest and each of the first group of geographic regions. The system may compare a first network metric of the geographic region of interest to first a metric baseline determined based on the one or more control regions. The system may determine whether the first network metric has a change greater than a threshold after the network deployment.

Abstract: Systems, methods, and non-transitory computer readable media can align face images, classify face images, and verify face images by employing a deep neural network (DNN). A 3D-aligned face image can be generated from a 2D face image. An identity of the 2D face image can be classified based on provision of the 3D-aligned face image to the DNN. The identity of the 2D face image can comprise a feature vector.

Abstract: A computing system may compute estimated depth measurements of at least one physical object in a physical environment surrounding a user. The system may generate, based on the estimated depth measurements, a first model of the at least one physical object. The system may render, based on the first model and a second model of a virtual object, an image depicting the physical object and the virtual object from a perspective of the user. At least one pixel of the image has a blended color corresponding to a portion of the physical object and a portion of the virtual object. The blended color is computed in response to a determination that a relative depth between a portion of the first model corresponding to the portion of the physical object and a portion of the second model corresponding to the portion of the virtual object is within a threshold.

Abstract: The disclosed optical lens assemblies may include a deformable optical element including a substantially transparent transducer configured to deform, and thus change at least one optical property of, the deformable optical element. At least a portion of the substantially transparent transducer may be positioned within a substantially transparent optical aperture of the optical lens assembly. Various head-mounted displays incorporating such an optical lens assembly, and methods of fabricating the same, are also disclosed.

Abstract: The present disclosure describes methods and systems for handling personally identifiable information. In some implementations, the information is collected during the authentication of identification (ID) documents. The system includes a one-way hashing function that converts unique personal identifiable information into a unique digest. The system can store the digest without having to store the personal identifiable information. Because the hashing function generates the same digest when given the same input, the digests can be used as anonymized identifiers in place of the personal identifiable information.

Abstract: In one embodiment, a computing system may access data samples associated with an access point of a communication network. The data samples may be collected at an application level from client devices associated with the access point and aggregated into data points correlating a first network metric to a traffic-volume metric. The system may partition the data points into a first and second set of data points using a first network metric threshold. The system may determine trends of the traffic-volume metric with respect to the first network metric based on regression analysis on the first and second sets of data points. The system may predict, based on the trends of the traffic-volume metric with respect to the first network metric, an amount of time until a network-capacity metric of the access point meets a traffic-loss threshold. The network-capacity metric may be determined based on the traffic-volume metric.

Abstract: Systems and methods for creating and providing transient contextual queues of music through a music service may include (1) providing a user of a device with a music service, (2) detecting a current context of the user, the current context including a characteristic of the user's environment, (3) creating a transient contextual queue of music including music compositions that are tailored to the current context, and (4) playing, via the device one or more music compositions from the transient contextual queue of music while the user is detected to be within the current context. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: By tiling multiple waveguide displays in an artificial-reality system, and/or using multiple projectors per waveguide display, a large field of view for the artificial-reality system can be achieved using waveguide displays. By using waveguide displays, a form factor for a virtual-reality system can be reduced compared to conventional virtual-reality systems.

Abstract: A pupil expander spatially modulates decoupling efficiency of light for pupil steering. The pupil expander can be used in a waveguide display, such as part of an artificial-reality display, to reduce power consumption of an optical source.