Switchable broadband waveplate
Granted: January 4, 2022
Patent Number:
11215881
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.
Pickup head with touch down sensor
Granted: January 4, 2022
Patent Number:
11219151
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…
Determination of an acoustic filter for incorporating local effects of room modes
Granted: January 4, 2022
Patent Number:
11218831
Determination of an acoustic filter for incorporating local effects of room modes within a target area is presented herein. A model of the target area is determined based in part on a three-dimensional virtual representation of the target area. In some embodiments, the model is selected from a group of candidate models. Room modes of the target area are determined based on a shape and/or dimensions of the model. The room mode parameters are determined based on at least one of the room…
Upsampling content for head-mounted displays
Granted: January 4, 2022
Patent Number:
11218691
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…
Pixel sensor having shared readout structure
Granted: January 4, 2022
Patent Number:
11218660
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,…
Apparatuses, systems, and methods for lorentz-force-based movement
Granted: January 4, 2022
Patent Number:
11218068
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…
Avatar fidelity and personalization
Granted: January 4, 2022
Patent Number:
11217036
An avatar personalization engine can generate personalized avatars for a user by creating a 3D user model based on one or more images of the user. The avatar personalization engine can compute a delta between the 3D user model and an average person model, which is a model created based on the average measurements from multiple people. The avatar personalization engine can then apply the delta to a generic avatar model by changing measurements of particular features of the generic avatar…
Artificial reality system with varifocal display of artificial reality content
Granted: January 4, 2022
Patent Number:
11217024
The disclosure describes artificial reality systems and techniques for providing artificial reality content to a user. For example, an artificial reality system includes a head-mounted display (HMD) configured to output artificial reality content, the HMD including a set of second image capture devices configured to capture image data indicative of a focal point of a gaze of the user and a varifocal display having a focal length that is modifiable based on the focal point of the user.…
Social network interactions
Granted: January 4, 2022
Patent Number:
11216169
Systems and techniques are described that enable users to capture and share content through a social network application and/or service with other users. A device associated with a first account may display a camera capture interface including a control associated with a second account and may receive a selection of the control associated with the second account. The device may capture content responsive to the selection and present a preview screen of captured content. The device may…
Systems and methods for improved speech recognition using neuromuscular information
Granted: January 4, 2022
Patent Number:
11216069
Systems and methods for using neuromuscular information to improve speech recognition. The system includes a plurality of neuromuscular sensors arranged on one or more wearable devices and configured to continuously record a plurality of neuromuscular signals from a user, at least one storage device configured to store one or more trained statistical models for determining text based on audio input and the plurality of neuromuscular signals, at least one input interface configured to…
Managing game sessions in a social network system
Granted: January 4, 2022
Patent Number:
11213760
This disclosure is directed to enabling access to a game instance through a social network system. A client-side player component facilitates communication between a game instance on the client device and a backend server of a social networking system. The communication information can be stored in or retrieved from a social graph of the social networking system. The game instance can be initialized from a social platform of the social networking system, and the game can be played…
Eye tracking for pupil steering in head-mounted displays using eye tracking sensors
Granted: January 4, 2022
Patent Number:
11215837
A method for providing augmented reality contents to a wearer using a head-mounted display device that includes an eye tracking sensor, a light projector, a beam steerer, and a combiner includes determining, with the eye tracking sensor, a position of a pupil of an eye of the wearer. The method also includes projecting, with the light projector, light for rendering images based at least on the augmented reality contents, and changing, with the beam steerer, a direction of the light from…
Light directors for head mounted display
Granted: January 4, 2022
Patent Number:
11215830
A head mounted display (HMD) includes an electronic display and a light director assembly. The electronic display includes a region of subpixels that are configured to emit light. The light director assembly is coupled to receive the light and to direct the light to an optical assembly of the HMD. The light director assembly includes a plurality of light directors configured to reduce an angular distribution of the light emitted from corresponding subpixels included in the region of…
Waveguide display with structured light for eye and face tracking
Granted: January 4, 2022
Patent Number:
11215818
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…
Systems and methods for generating spectator images of an artificial reality environment
Granted: January 4, 2022
Patent Number:
11215817
A method includes a computing system receiving a first-person image that captures an artificial-reality environment from a first-person perspective of a user of a head-mounted device, wherein the first-person image is rendered based on a pose of the head-mounted device. Based on the pose of the head-mounted device, the computing system determines a spectator perspective wherein the spectator perspective and the first-person perspective are co-located in a three-dimensional space and the…
Flexures for optical components
Granted: January 4, 2022
Patent Number:
11215782
An example optical substrate, according to aspects of the present disclosure, includes a support structure, a plurality of optical components, and a plurality of flexures. Each flexure is engaged with the support structure and a respective optical component for allowing independent lateral movements of the optical components during assembly of the optical substrate with another layer of an optical assembly.
Achromatic optical device based on birefringent materials having positive and negative birefringence dispersions
Granted: January 4, 2022
Patent Number:
11215743
An optical device includes a first layer including a first birefringent material having a negative birefringence dispersion property. The optical device also includes a second layer including a second birefringent material having a positive birefringence dispersion property. The first layer and the second layer are structurally patterned to provide at least one predetermined optical function.
Time-to-digital converter for depth sensing
Granted: January 4, 2022
Patent Number:
11215712
A depth camera assembly is used to obtain depth information describing a local area. The depth camera assembly includes a sensor having a plurality of pixels. Some or all of the pixels are divided into groups that are coupled to respective multi-purpose time-to-digital converters. Each multi-purpose time-to-digital converter comprises an oscillator and a counter. Each pixel in a group is associated with a multiplexer that is configured to select between inputs coupled to the pixel, the…
Apparatus for interfacing with a display panel compatible with a mobile industry processor interface
Granted: January 4, 2022
Patent Number:
11215660
The disclosed computer-implemented method may include providing test signals from a panel test board included in a fixture to a device under test included in a carrier including providing interface signals from the panel test board to a connector included on a fixture interposer block included in the fixture, interfacing the connector on the fixture interposer block with one or more pogo pins included on a panel interposer board included in the carrier, the interfacing providing the…
Dual-kite aerial vehicle
Granted: January 4, 2022
Patent Number:
11214365
Systems and methods are disclosed for implanting a dual-kite aerial vehicle including a first kite apparatus, a second kite apparatus, and a tether extending between the first and second kite apparatuses. In particular, the disclosed systems include a first kite apparatus including a first flight controller that maintains flight at a first altitude. The disclosed system further includes a second kite apparatus including a second flight controller that maintains flight at a second…
