Abstract: A communication network (10) provides communicative coupling between potentially large populations of Internet-of-Things (IoT) devices (12) and/or other types of communication devices (12) and one or more Application Servers (ASs) (14) that are affiliated with respective ones of the communication devices (12). One or more network functions (30, 58) in the communication network (10) are operative to determine that any given one of the communication devices (12) is compromised, or that multiple such devices (12) are compromised, and provide for management of such devices (12) within the network (10) as “compromised” devices (12). Aspects of compromised-device management include forcing re-registration of such devices (12), for quarantining them in one or more quarantine network slices (54), and recovering quarantined devices (12) after remediation of the compromise.

Abstract: An eye is illuminated with infrared illumination light. Illuminating the eye includes illuminating a near-eye ellipsoidal lensing structure. A tracking image of Purkinje reflections of the infrared illumination light is captured by a camera. An eye position of the eye is determined in response to the tracking image.

Abstract: An apparatus, system, and method for an imaging system that may be used to support eye tracking in a head mounted display. The imaging system may include an image sensor positioned in a user's field of view and within a lens assembly to capture light that is reflected from an eye. The imaging system may include two optical elements that are configured to at least partially direct scene light around the image sensor to conceal the image sensor from the user's eye. The image sensor is positioned between the two optical elements within the lens assembly.

Abstract: A system includes (a) an optical device having a GRIN LC lens, the GRIN LC lens including a liquid crystal layer, (b) a sensor configured to assess an attribute of the liquid crystal layer, (c) a heat source, and (d) a controller configured to mediate heat flow between the heat source and the liquid crystal layer based on a signal provided by the sensor.

Abstract: There is provided a photonic integrated circuit configured for low-coherence interferometry and in-field sensing. The photonic integrated circuit can include an opto-coupler that has a substrate substantially transparent to a specified wavelength of light and a waveguide configured to route a light beam having a center wavelength at the specified wavelength. The opto-coupler further includes a mirror disposed at an angle, and the mirror is disposed on an angled surface of the substrate, the angled surface being proximate to an output end of the waveguide. The opto-coupler further includes a beam forming element configured to collect light reflected from the mirror, and the waveguide and the mirror are integrated within the substrate.

Abstract: A near-eye imaging system includes a light source, a waveguide, a scanner, and a sensor. The light source is configured to emit light. The waveguide includes an output coupler. The scanner is configured to direct the light to the output coupler at varying scan angles. The waveguide confines the light to guide the light to the output coupler. The output coupler has negative optical power and is configured to direct the light to exit the waveguide as expanding illumination light toward an eyebox region. The sensor is configured to generate a tracking signal in response to returning light incident on the sensor via the scanner and via the output coupler.

Abstract: A system includes a diffractive optical element including at least one substrate and a grating structure. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range, and the at least one substrate is configured to reflect a second light. The system also includes a polarization selective mechanism configured to generate images based on the first light and the second light, respectively.

Abstract: An eye-tracking method includes enabling at least one light source of an array of light sources to emit non-visible light to illuminate an eye. The method also includes obtaining at least one image of the eye while the at least one light source is enabled. A position of the eye may then be determined based on a position of the at least one light source within the array of light sources in response to determining that the at least one image indicates a bright pupil condition when the at least one light source was enabled.

Abstract: Angular sensors that may be used in eye-tracking systems are disclosed. An eye-tracking system may include a plurality of light sources to emit illumination light and a plurality of angular light sensors to receive returning light that is the illumination light reflecting from an eyebox region. The angular light sensors may output angular signals representing an angle of incidence of the returning light.

Abstract: A system is provided. The system includes a first PVH layer configured to deflect a first polarized light having a first handedness. The system includes a second PVH layer coupled to the first PVH layer and configured to deflect a second polarized light having a second handedness opposite to the first handedness. The system includes an optical sensor configured to generate a first image based on the first polarized light deflected by the first PVH layer and generate a second image based on the second polarized light deflected by the second PVH layer.

Abstract: An optical system includes an illumination layer, an optical combiner, and an active optics block. The illumination layer includes an array of point light sources configured to emit calibration light. The optical combiner is configured to pass visible light to a front side of the optical system and to direct the calibration light to a camera that generates an image in response to the calibration light. The image includes an array of points corresponding to the array of point light sources. The active optics block includes an adjustable lens disposed between the illumination layer and the optical combiner and is configured to pass the calibration light to the optical combiner and to focus the visible light. The active optics block is further configured to adjust an optical power of the adjustable lens based on the image of the array of points.

Abstract: An optical element may include two or more zones to perform functions in a head-mounted display (HMD) device. An optical component may include a first optical zone characterized by a first sag profile to correct a refractive error of an eye of a user and a second optical zone characterized by a second sag profile to redirect a path of an illumination light beam. A transition zone located between the first optical zone and the second optical zone may provide a smooth transition between the first optical zone and the second optical zone.

Abstract: A near-eye imaging system includes a light source, a waveguide, a scanner, and a sensor. The light source is configured to emit light. The waveguide includes an output coupler. The scanner is configured to direct the light to the output coupler at varying scan angles. The waveguide confines the light to guide the light to the output coupler. The output coupler has negative optical power and is configured to direct the light to exit the waveguide as expanding illumination light toward an eyebox region. The sensor is configured to generate a tracking signal in response to returning light incident on the sensor via the scanner and via the output coupler.

Abstract: Systems and methods dynamically control optical conditions presented to a user by an artificial reality system according to monitored visual experience parameters for the user. For example, the artificial reality presentation to the user can be tracked to monitor visual experience parameters, such as light characteristics (e.g., color), focal distances, virtual object characteristics (e.g., objects/text color, size, etc.), aggregated defocus distance of background, luminance, activity, eye movement, accommodation distances, and other suitable conditions. Implementations can vary optical conditions presented/displayed by the artificial reality system according to the monitoring by altering the focal distance for virtual objects, text size, text/background color, light characteristics, and other suitable optical conditions. In some examples, user preferences for optical conditions can be determined according to the monitoring.

Abstract: Aspects of the present disclosure are directed to controlling optical parameters at a user's eye using an artificial reality system and tracked user conditions. For example, based on tracked user eye positioning, implementations can adjust the light that enters the user's eye to control an image shell generated at the user's eye. An image shell refers to the way light, that enters the eye, focuses on the retina of the eye. Example properties of an image shell include image shell centration, image shell curvature, image shell shape, etc. A user may focus on an object in an artificial reality environment (e.g., real-world object or virtual object) and light from the object can generate an image shell at the user's eyes. The image shell at the user's eyes can impact the user's vision and/or eye biology.

Abstract: Illumination light is emitted from a light source. The illumination light is directed to an eyebox region via a lightguide. Illumination light and visible light beams are incoupled into the lightguide by a tiltable reflector. A tracking signal is generated with a sensor in response to a returning light becoming incident on the sensor.

Abstract: A near-eye optical device includes a transparent layer, an in-field illuminator, and a diffractive optical element (DOE). The in-field illuminator is configured to emit near-infrared light centered around a first wavelength. The diffractive optical element is configured to be illuminated by the near-infrared light emitted by the in-field illuminator. The DOE generates a structured light projection that includes dots that expand as the structured light projection propagates farther from the DOE. The structured light projection is directed to illuminate an eyebox.

Abstract: A head mounted device includes a light sensor configured to generate light data in response to measuring scene light in an external environment of the head mounted device, a display configured to present a virtual image to an eyebox area of the head mounted device, a near-eye dimming element configured to modulate a transmission of the scene light to the eyebox area in response to a transmission command, and processing logic configured to adjust the transmission command of the dimming element in response to a brightness level of the virtual image and the light data generated by the light sensor.

Abstract: An example apparatus may include a display, a beamsplitter having a first region and a second region, and a reflective polarizer. The reflectance of the second region of the beamsplitter may be appreciably greater than the reflectance of the first region; for example, at least approximately 20% greater. In some examples, the second region may be a peripheral region surrounding a generally centrally located first region. An example apparatus may be configured so that at least some light emitted by the display is transmitted through the first region of the beamsplitter, reflects from the reflective polarizer, reflects from the second region of the beamsplitter, and is then directed through the reflective polarizer to an eye of a user when the user wears the apparatus. Other devices, methods, systems, and computer-readable media are also disclosed.

Abstract: A transmitter emits transmit signals to an ear-region. Image signals are generated by a receiver. The image signals are generated by the receiver in response to receiving return signals. The return signals are the millimeter-wave transmit signals reflecting back from the ear-region. An ear-region image is generated in response to the image signals.