Abstract: An optical device (e.g., a pupil expander) includes a waveguide with a slanted facet. The optical device includes a reflector on the slanted facet and a prism, or a grating at the slanted facet. The prism or the grating compensates for the dispersion of an image light from a display, which reduces smearing of displayed images. The waveguide can be configured for pupil replication in one-dimension or two-dimensions.

Abstract: A method includes adjusting a focal length of an adaptive liquid lens that includes a layer of optical fluid on a substrate and in conjunction with adjusting the focal length of the adaptive liquid lens, adjusting a liquid crystal element coupled with the adaptive liquid lens. The method also includes transmitting light through the adaptive liquid lens and the liquid crystal element. Also disclosed is a hybrid lens including an adaptive liquid lens and a liquid crystal element coupled with the adaptive liquid lens. The liquid crystal element reduces optical artifacts caused by the adaptive liquid lens. The adaptive liquid lens includes a layer of optical fluid on a substrate, where a focal length of the adaptive liquid lens is adjustable.

Abstract: The disclosed projector device may include (1) a first monochromatic emitter array having a plurality of emitters of a first color disposed in a two-dimensional configuration and (2) a second monochromatic emitter array having a plurality of emitters of a second color disposed in a two-dimensional configuration. The first and second monochromatic emitter arrays may be configured to emit images of the first and second colors into a waveguide configuration, and the first color may be different than the second color. Associated display systems and methods are also provided.

Abstract: An illumination assembly includes a transparent substrate and a plurality of micro devices. The transparent substrate includes a first surface and a second surface opposite the first surface. The first surface includes a viewing region through which light passes prior to reaching an eyebox. The plurality of micro devices are coupled to respective conductive pathways that are affixed to the first surface. The plurality of micro devices including at least one micro device that is positioned within the viewing region. In some embodiments, the conductive pathways are arranged in a pseudo random manner. In some instances, the viewing region is composed of a circuity free region that is circumscribed by an outer region, and the plurality of micro devices are coupled to respective conductive pathways that are affixed to the first surface in the outer region.

Abstract: A device and a head-mounted display (HMD) are provided. The device comprises a first flexible electrode and a second flexible electrode configured to provide a driving voltage to the device; a birefringent material layer coupled to the first flexible electrode and the second flexible electrode, and structurally patterned to provide at least one predetermined optical function of the device; and a first photo-alignment (PAM) layer and a second PAM layer sandwiching the birefringent material layer. A structured pattern of the birefringent material layer is based on a manipulation of optic axis of birefringent material molecules in the birefringent material layer.

Abstract: A sub-pixel for an LED display, the sub-pixel comprising a first light emitting device having a first emission beam angle and a second light emitting device having a second beam angle, the second emission beam angle being different to the first emission beam angle. There is also described a display using a plurality of the sub-pixels.

Abstract: Techniques related to eye tracking using reverse-biased light-emitting diode (LED) devices are disclosed. In some embodiments, a viewing apparatus comprises a reverse-biased LED device that is positioned within a field-of-view of an eye. The reverse-biased LED device receives light reflected from the eye and generates signal based on the received light. The generated signal is used to determine a position of the eye.

Abstract: A calibration assembly for calibrating a depth sensor. The calibration assembly includes a pathway and a controller coupled to a depth sensor. The pathway is coupled to a light source, and a pulse of light from the light source is directed through the pathway to the depth sensor at a first time. The controller determines a second time at which a measurement of the light pulse detected at an augmented pixel of the depth sensor is read out. The controller computes a readout delay for the augmented pixel based on the first time, the second time, and an estimated travel time for the light pulse from the light source to the augmented pixel. The controller stores the readout delay, and a depth camera that includes the depth sensor is configured to calibrate out the readout delay relative to other augmented pixels of the depth sensor.

Abstract: The disclosed computer-implemented method for directing adaptive camera systems may include (i) monitoring, via a camera that is part of a camera system, a person within a physical environment, (ii) detecting, by the camera system, a gesture performed by the person, (iii) determining, by the camera system, that the gesture indicates an element of the physical environment, and (iv) performing, by the camera system, an action directed at the element of the physical environment in response to determining, by the camera system, that the gesture indicates the element of the physical environment. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A display system may include 1) a plurality of electronic components, 2) an LCD screen that is heatable at a base heating rate by operation of the LCD screen and one or more of the plurality of electronic components, and 3) a heating subsystem for heating the LCD screen at an accelerated heating rate that is greater than the base heating rate to raise a temperature of the LCD screen above a threshold screen temperature. A head-mounted-display device may include 1) a display housing, 2) a plurality of electronic components disposed within the display housing, 3) an LCD screen disposed within the display housing, and 4) a heating subsystem for heating the LCD screen at an accelerated heating rate. Various other apparatuses, systems, and methods are also disclosed.

Abstract: Systems and methods for text input based on neuromuscular information. The system includes a plurality of neuromuscular sensors, arranged on one or more wearable devices, wherein the plurality of neuromuscular sensors is 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, and at least one computer processor programmed to obtain the plurality of neuromuscular signals from the plurality of neuromuscular sensors, provide as input to the one or more trained statistical models, the plurality of neuromuscular signals or signals derived from the plurality of neuromuscular signals, and determine based, at least in part, on an output of the one or more trained statistical models, one or more linguistic tokens.

Abstract: A head-mounted display (HMD) includes a multifocal block having one or more possible focal distances and includes a multifocal structure. The multifocal structure has a first focal distance and a second focal distance of the one or more possible focal distances. The multifocal structure includes one or more optical components positioned in series such that light from an electronic display is received and passes through each of the one or more optical components at least once before being output from the multifocal structure. The one or more optical components includes a switchable half waveplate (SHWP). The SHWP has a first state that causes the multifocal structure to output image light at the first focal distance, and a second state that causes the multifocal structure to output the image light at the first focal distance.

Abstract: A scene presented by a headset is adjusted to correct for distortion from optical errors of an optics block in the headset. To correct for the distortion, the scene is pre-distorted when presented based on previously modeled distortion of the optics block, so distortion from the optics block corrects the pre-distortion. To model the distortion, the headset displays calibration image including features and images of the calibration image are captured from multiple positions. Differences between locations of features in the calibration images and locations of corresponding features in captured images of the calibration image are identified and a distortion correction is determined based on the differences.

Abstract: A Pancharatnam Berry Phase (PBP) color corrected structure is presented that comprises a plurality of switchable gratings and a plurality of PBP active elements. Each switchable grating has an inactive mode when reflects light of a specific color channel, of a set of color channels, and transmits light of other color channels in the set of color channels, wherein the specific color channel is different for each of the plurality of switchable gratings, and to have an active mode to transmit light that is inclusive of the set of color channels. The PBP active elements receive light output from at least one of the plurality of switchable gratings. Each of the PBP active elements is configured to adjust light of a different color channel of the set of color channels by a same amount to output light corrected for chromatic aberration for the set of color channels.

Abstract: The disclosed computer-implemented method may include a display calibration apparatus. The display calibration apparatus may include a lens and an actively-cooled electromagnetic radiation detector configured to detect electromagnetic radiation emitted from various pixels of an electronic display panel under test. The electromagnetic radiation may travel through the lens prior to reaching the detector. The display calibration apparatus may also include a special-purpose computing device configured to: analyze the detected electromagnetic radiation from the pixels of the electronic display panel and generate calibration data for the electronic display panel using a specified calibration algorithm. As such, the electronic display panel may operate using the generated calibration data. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A waveguide display includes a light source, a conditioning lens assembly, a scanning mirror assembly, and a controller. The light source includes a plurality of source elements that are configured to emit image light in accordance with scanning instructions. The conditioning lens assembly transmits conditioned light based in part on the image light. The scanning mirror assembly scans the conditioned image light to particular locations as scanned image light in accordance with scanning instructions. The output waveguide includes an input area and an output area, receives the scanned image light emitted from the scanning mirror assembly at the input area, and outputs the expanded image light from a portion of the output area based in part on a direction of the expanded light output from the scanning mirror assembly. The controller generates the scanning instructions and provides the scanning instructions to the light source and the scanning mirror assembly.

Abstract: An electronic display includes a display panel that operates in a single display mode to provide a single display, or a dual display mode to provide two displays separated by an inactive region. The electronic display includes the display panel and a panel driver. The display panel includes a left pixel region, a right pixel region, and a middle pixel region between the left and right pixel regions. In the single display mode of the electronic display, the panel driver provides first gate signals generated from first input data to the left, right, and middle pixel regions. In a dual display mode, the panel driver provides second gate signals generated from second input data to the left and right pixel regions. The first input data has a first resolution that is larger than a second resolution of the second input data.

Abstract: A key assembly for a keyboard may include a key cap that includes a touch sensor that is communicatively coupled to a control device. When the touch sensor senses a touch event, the touch sensor may send a touch signal to the control device, and when the touch sensor senses an absence of touch, the touch sensor may send a control signal to the control device. The key assembly may further include a switch that is communicatively coupled to the control device and that is movable between a pressed position and an un-pressed position. When the switch is in the pressed position, the switch may send a closed signal to the control device, and when the switch is in the un-pressed position, the switch may send an open signal to the control device. Various other apparatuses, systems, and methods are also disclosed.

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: Various aspects of the subject technology relate to display panels for head-mountable devices. A display panel may include a left-eye pixel array and a right-eye pixel array that are each rotated with respect to a horizontal defined by a straight line connecting the centers of the arrays. The rotated pixel arrays each include data lines and scan lines that extend at oblique angles relative to the horizontal. A liquid crystal layer of the display panel may include liquid crystal molecules having a default orientation at an oblique angle relative to both the data lines and the scan lines of both of the rotated pixel arrays. The rotated pixel arrays may each include pixel circuits arranged along the data lines and scan lines, each pixel circuit including a transparent electrode oriented at an oblique angle relative to both the scan lines and the data lines.