Abstract: According to at least one implementation, a method includes displaying content on an extended reality device and capturing, by a camera, a reflection from an eye of a user, the camera configured to asynchronously identify changes to pixels in the reflection. The method further includes detecting a movement of the eye based on a change to at least one pixel detected in the reflection.

Abstract: A head mounted display (HMD) device includes a frame housing a micro-display or other image projector to project display light and a display waveguide to receive the display light from the image projector. A detection controller determines a breakage status of the display waveguide. The breakage status may be determined based on monitored sensors housed within the frame. For example, a monitored sensor may include an electrically conductive loop positioned around a perimeter of at least a portion of the display waveguide, with one or more electrical contact pads in electrical contact with the electrically conductive loop and communicatively connected to the detection controller to determine the breakage status based on monitored loop resistance of the electrically conductive loop.

Abstract: A device may include a frameset having a front frame portion and two arm portions. A device may include a lens coupled to the front frame portion, the lens comprising a reflective coating that is reflective over a laser bandwidth. A device may include a laser flood illuminator positioned within a first arm portion of the two arm portions, the laser flood illuminator transmitting a beam having the laser bandwidth and configured to transmit the beam towards an eye via reflection at the lens. A device may include a camera comprising: a filter configured to receive a returned light from the eye and generate a returned filtered light, the filter having a passband that includes the laser bandwidth, and a sensor operable to receive the returned filtered light and generate a signal. A device may include a processor operable to measure the signal.

Abstract: A gaze tracking system is disclosed for use in augmented reality or virtual reality headsets. The gaze tracking system uses a holographic optical element and a transparent waveguide to create a telecentric illumination and imaging system that facilitates accurate and reliable measurements of eye motion. The gaze tracking system uses the transparent waveguide, incorporated into the lens of the headset, with a holographic out-coupler to establish a virtual light source and detector directly in front of the eye, to facilitate an optimal view of the eye during measurement of eye motion.

Abstract: A cover is described for use in protecting near infrared sensors mounted to an augmented reality headset. Manufacturing the cover includes a polycarbonate injection molding process followed by a multi-coating deposition process. Contours of the sensor apparatus can be masked prior to the deposition to improve yield.

Abstract: Systems and methods for implementing a continuously monitoring safety system that tracks emission of light energy from the light source by measuring energy at various sampling points within image frames projected by a projector and estimating a highest energy for a pupil area of each of the image frames based on a subset of sampling points encompassed by the pupil area. The highest energy for each of the image frames is summed to generate a cumulative highest energy, which is compared to a predetermined threshold, and in response to the cumulative highest energy exceeding the threshold, adjusting an power output of the projector.

Abstract: According to an aspect, a method for designing an eye tracker on a wearable device includes selecting a first three-dimensional (3D) model of at least a head of a person, selecting a second 3D model of a wearable device, positioning a synthetic eye within the first 3D model, positioning an eye tracker component at a first location on the second 3D model, the eye tracker component including at least one of an eye tracker sensor or a light source, moving at least one of the first 3D model or the second 3D model such that at least a portion of the first 3D model contacts at least a portion of the second 3D model, and generating performance data with the eye tracker component positioned at the first location on the second 3D model.

Abstract: Systems and methods for implementing a continuously monitoring safety system that tracks emission of light energy from the light source by measuring energy at various sampling points within image frames projected by a projector and estimating a highest energy for a pupil area of each of the image frames based on a subset of sampling points encompassed by the pupil area. The highest energy for each of the image frames is summed to generate a cumulative highest energy, which is compared to a predetermined threshold, and in response to the cumulative highest energy exceeding the threshold, adjusting an power output of the projector.

Abstract: According to an aspect, a method for designing an eye tracker on a wearable device includes selecting a first three-dimensional (3D) model of at least a head of a person, selecting a second 3D model of a wearable device, positioning a synthetic eye within the first 3D model, positioning an eye tracker component at a first location on the second 3D model, the eye tracker component including at least one of an eye tracker sensor or a light source, moving at least one of the first 3D model or the second 3D model such that at least a portion of the first 3D model contacts at least a portion of the second 3D model, and generating performance data with the eye tracker component positioned at the first location on the second 3D model.

Abstract: A golf club carrier (100) comprising an elongate body (102) and a trundler mechanism (120) is disclosed. The trundler mechanism (120) is configured to be attached to the elongate body (102). The trundler mechanism (120) comprises a track (119a, 119b), at least one slidable collar (118) mounted to the track (119a, 119b), and at least two struts (122, 124) that are mounted to the collar (118). The trundler mechanism (120) is reconfigurable between a stowed or collapsed condition and a deployed condition without requiring any assembly or disassembly of the trundler mechanism (120). In the deployed condition, one of the ends of each strut (122, 124) extend away from the elongate body (102) and the wheels (132, 134) can be secured to the struts (122, 124) to allow the carrier (100) to be transported in a rolling manner over ground.

Abstract: A golf club carrier comprising a body separated into two compartments, a first compartment to receive the shaft, handle first, of a golf club in a first direction and a second compartment to receive at least two spoked wheels used for transporting the golf club carrier over ground in a coaxial manner and parallel to and in a second direction opposed to the first direction to be stored at the second compartment, the interface between the first compartment and second compartment being shaped and adapted to allow the handle of the golf club to extend into each wheel between spokes of each wheel yet remain separated from the wheels by the interface.

Abstract: A golf club carrier comprising a body separated into two compartments, a first compartment to receive the shaft, handle first, of a golf club in a first direction and a second compartment to receive at least two spoked wheels used for transporting the golf club carrier over ground in a coaxial manner and parallel to and in a second direction opposed to the first direction to be stored at the second compartment, the interface between the first compartment and second compartment being shaped and adapted to allow the handle of the golf club to extend into each wheel between spokes of each wheel yet remain separated from the wheels by the interface.

Abstract: Methods for processing waste activated sludge obtainable from wastewater plants. The methods herein are useful in that they provide novel waste activated sludge preparations that are substantially free of live microbial organisms and contain a high content of digestible protein.

Abstract: The invention is related to a helmet having an interior foam liner with at least two shell portions. The helmet includes an exterior in-mold shell portion covering a portion of the liner. The helmet also includes an exterior post-applied shell portion covering a portion of the liner that is not covered by the in-mold shell portion. The helmet includes conduits located between the liner and the post-applied shell portion for ventilation and air flow useful for removing the heat generated by a user.