Abstract: Certain embodiments disclosed herein provide a surgical cassette including a housing, one or more retaining rings coupled to the housing, and one or more valve assemblies coupled to the housing by the one or more retaining rings. The one or more valve assemblies configured to control fluid communication between one or more channels within the housing. Each valve assembly includes a valve body having a first end with a first shoulder, a second end with a second shoulder, a cylindrical surface connecting the first shoulder and second shoulder, and an upper valve elastomer. The upper valve elastomer includes a first side configured to engage with the first shoulder of the valve body and a second side configured to engage with the retaining ring to facilitate a fluidic seal at a base of the housing.

Abstract: Embodiments herein provide a surgical cassette and surgical console for ophthalmic irrigation or aspiration during a surgical procedure, the surgical cassette comprising a plurality of valve assemblies, wherein each valve assembly comprises a retaining ring coupled to a base of the surgical cassette, and a valve body disposed within a cavity defined within the retaining ring, wherein the retaining ring provides a compression force against the valve body that in turn compresses at least a portion of a sealing material disposed on the valve body against a surface of the base. The surgical console comprises a plurality of valve drive assemblies configured to apply additional compression forces to the valve assemblies of the surgical cassette. The valve drive assemblies may be actuated individually or collectively so as to provide additional compression to selected ones of the plurality of valve assemblies.

Abstract: Embodiments disclosed herein provide a surgical cassette including pump assemblies with improved contact between a displacement sensor disposed within a surgical console and a diaphragm disposed within the surgical cassette. Each pump assembly includes a diaphragm retainer ring that provides a sufficient creepage and clearance margin, acts as a lead-in for the displacement sensor, assists in preventing misalignment, and provides robustness for the ultrasonic welding process which couples the diaphragm retainer ring to the surgical console. The diaphragm retainer ring is impregnated with a lubricant so to facilitate seating of the displacement sensor with the cassette. A cantilever portion of the diaphragm retainer ring increases a creepage and clearance margin, as well as increases overall part strength in the event of a collision with the displacement sensor and during ultrasonic welding. An insulator is also provided that further increases the creepage and clearance margin.

Abstract: Certain embodiments disclosed herein provide a surgical cassette including a housing, one or more retaining rings coupled to the housing, and one or more valve assemblies coupled to the housing by the one or more retaining rings. The one or more valve assemblies configured to control fluid communication between one or more channels within the housing. Each valve assembly includes a valve body having a first end, a second end, a cylindrical surface connecting the first end and second end, and a valve elastomer. The valve elastomer includes a first side configured to couple the valve elastomer to the second end of the valve body and a second side having a recessed surface configured to engage with the housing to form a seal with a base of the housing and reduce mechanical stress across the valve elastomer during rotation of the valve assembly.

Abstract: A method including receiving a plurality of characteristics associated with an object, receiving a quantity of groups of the object, generating N-dimensional clusters based on the plurality of characteristics and the quantity of groups of the object, receiving a product constraint, and generating data representing a product based on each of the N-dimensional clusters and the product constraint.

Abstract: Techniques of identifying gestures include detecting and classifying inner-wrist muscle motions at a user's wrist using micron-resolution radar sensors. For example, a user of an AR system may wear a band around their wrist. When the user makes a gesture to manipulate a virtual object in the AR system as seen in a head-mounted display (HMD), muscles and ligaments in the user's wrist make small movements on the order of 1-3 mm. The band contains a small radar device that has a transmitter and a number of receivers (e.g., three) of electromagnetic (EM) radiation on a chip (e.g., a Soli chip. This radiation reflects off the wrist muscles and ligaments and is received by the receivers on the chip in the band. The received reflected signal, or signal samples, are then sent to processing circuitry for classification to identify the wrist movement as a gesture.

Abstract: Systems and methods related to simulated light-in-flight imaging are described. A computing device may execute a light-in-flight engine to process an optical image and a corresponding depth map to produce a light-in-flight image or video that simulates propagation of a wavefront across a scene. The light-in-flight engine may generate an optical simulation output by transforming a depth map to a three-dimensional lift domain to produce a three-dimensional data structure, then convolving the three-dimensional data structure with a convolutional operator, which may define a Gaussian sphere, to produce a filtered three-dimensional data structure. The light-in-flight engine then affine transforms the optical image with an identified slice of the filtered three-dimensional data structure to produce a light-in-flight image.

Abstract: The disclosed devices and methods provide beamforming for a head-worn microphone array that can adapt to changes in the user's head position/orientation. The microphone array may be part of a head-worn computing device, which can be configured to automatically detect a direction for the beamforming based on computer-assisted recognition of a conversation with a participant. After the participant is identified, the beamforming can automatically steer the sensitivity of the microphone array towards the participant regardless of the position of the head user to improve a quality of the captured audio without constraining movement of a user. The improved audio may be used to aid in a user's hearing of the conversation, aid an augmented reality application corresponding to the conversation, and/or provide a degree of privacy by limiting sensitivity to participants in the conversation.

Abstract: Systems and techniques are described for generating a color image by computationally combining chromatically undersampled and shifted information present in multiple component image frames captured via a sparse color filter array that includes a minority of wavelength-filtered picture elements and a remaining majority of panchromatic picture elements. A burst capture is initiated of multiple image frames via a color filter array comprising a plurality of subunits, each subunit including a minority of one or more wavelength-filtered adjacent pixels and a majority of remaining panchromatic pixels. Each of the multiple image frames is processed to generate a resulting color image.

Abstract: A non-transitory computer-readable storage medium can comprise instructions stored thereon. When executed by at least one processor, the instructions can be configured to cause a mobile computing device to receive, from a companion device, multiple files, each of the multiple files including at least media content, a trigger condition, and an action to be performed upon satisfaction of the trigger condition. The action included in at least one of the files can include playing media content from another one of the multiple files. The instructions can be further configured to cause the mobile computing device to play the media content included in at least one of the multiple files, receive at least one additional file from the companion device, erase at least one of the multiple files, and play media content included in the at least one additional file.

Abstract: A method including retrieving a set of first ultra-wide band (UWB) data representing locations in a physical space and device locations in the physical space, the first UWB data representing the locations being tagged as associated with a device, generating a set of first coordinates based on the set of first UWB data, generating second UWB data representing a current location of the UWB tag device in the physical space, generating a second coordinate based on the second UWB data, generating a tiled set of coordinates by partitioning a plane associated with the physical space based on the set of first coordinates and the second coordinate, determining whether the UWB tag device is proximate to a tagged coordinate in the tiled set of coordinates, and in response to determining the UWB tag device is proximate to a tagged coordinate, initiating an action by the device associated with the tagged coordinate.

Abstract: Techniques include performing a display calibration while a smartglasses device is stored in a case that enables the smartglasses device to perform display calibrations. The case includes an optical device configured to form an image of a test pattern formed in a first display and a second display of the smartglasses device.

Abstract: A wearable device, such as a head-wearable display (HWD), identifies a device pose based on a combination of angle-of-arrival (AOA) data generated by, for example, an ultra-wideband (UWB) positioning module, and inertial data generated by an inertial measurement unit (IMU). The HWD fuses the AOA data with the inertial data using data integration techniques such as one or more of stochastic estimation (e.g., a Kalman filter), a machine learning model, and the like, or any combination thereof. A computer device associated with the HWD can employ the fused data to identify a pose of the HWD (e.g., a six degree of freedom (6 DoF) pose) and can use the identified pose to modify virtual reality or augmented reality content implemented by the computer device, thereby providing an immersive and enjoyable experience for a user.

Abstract: Techniques of identifying gestures include detecting and classifying inner-wrist muscle motions at a user's wrist using micron-resolution radar sensors. For example, a user of an AR system may wear a band around their wrist. When the user makes a gesture to manipulate a virtual object in the AR system as seen in a head-mounted display (HMD), muscles and ligaments in the user's wrist make small movements on the order of 1-3 mm. The band contains a small radar device that has a transmitter and a number of receivers (e.g., three) of electromagnetic (EM) radiation on a chip (e.g., a Soli chip. This radiation reflects off the wrist muscles and ligaments and is received by the receivers on the chip in the band. The received reflected signal, or signal samples, are then sent to processing circuitry for classification to identify the wrist movement as a gesture.

Abstract: Techniques of displaying content on a transparent display include detecting an individual present with respect to a world side, i.e., facing away from a user of a transparent display, opposite side of the transparent display as the user side. For example, circuitry connected to smartglasses detects the presence of an individual in the vicinity of the world side of a transparent display. In response, the circuitry causes an image of the individual to be generated and, based on the image, the circuitry classifies the individual as being in a state satisfying a set of criteria or not. In some implementations, the set of criteria include the individual being oriented in such a way as to be able to see the document. In response to the individual satisfying the criteria, the circuitry obscures the document from the view of the individual.

Abstract: Techniques include performing a display calibration while a smartglasses device is stored in a case that enables the smartglasses device to perform display calibrations. The case includes an optical device configured to form an image of a test pattern formed in a first display and a second display of the smartglasses device.

Abstract: This document describes systems and techniques to generate refined location estimates using ultra-wideband (UWB) communication links. Mobile devices, such as smartphones, include location sensors to estimate their location. The accuracy of location sensors is generally about 3 meters (or about 10 feet). More accurate location data would allow mobile devices to provide new and improved functionality. The described systems and techniques determine the distance between nearby mobile devices using UWB communication links. A mobile device can then use the distance between the mobile devices to determine their relative locations. By comparing the relative locations of the mobile devices with their location estimates, the mobile device can generate a refined location estimate.

Abstract: Techniques of identifying gestures include detecting and classifying inner-wrist muscle motions at a user's wrist using micron-resolution radar sensors. For example, a user of an AR system may wear a band around their wrist. When the user makes a gesture to manipulate a virtual object in the AR system as seen in a head-mounted display (HMD), muscles and ligaments in the user's wrist make small movements on the order of 1-3 mm. The band contains a small radar device that has a transmitter and a number of receivers (e.g., three) of electromagnetic (EM) radiation on a chip (e.g., a Soli chip. This radiation reflects off the wrist muscles and ligaments and is received by the receivers on the chip in the band. The received reflected signal, or signal samples, are then sent to processing circuitry for classification to identify the wrist movement as a gesture.

Abstract: A gas turbine engine is provided including a turbomachine having a compressor section, a combustion section, and a turbine section arranged in serial flow order; a rotor assembly driven by the turbomachine, the rotor assembly, the turbomachine, or both comprising a substantially annular duct relative to the centerline of the gas turbine engine, the annular duct defining a flowpath; a heat exchanger positioned within the annular duct and extending substantially continuously along the circumferential direction, the heat exchanger comprising a first material defining a heat exchange surface exposed to the flowpath, wherein the first material defines a heat exchange coefficient and wherein the heat exchange surface defines a surface area (A), and wherein the heat exchanger has an effective transmission loss (ETL) of between 5 decibels and 1 decibel for an operating condition.

Abstract: Techniques of displaying content on a transparent display include detecting an individual present with respect to a world side, i.e., facing away from a user of a transparent display, opposite side of the transparent display as the user side. For example, circuitry connected to smartglasses detects the presence of an individual in the vicinity of the world side of a transparent display. In response, the circuitry causes an image of the individual to be generated and, based on the image, the circuitry classifies the individual as being in a state satisfying a set of criteria or not. In some implementations, the set of criteria include the individual being oriented in such a way as to be able to see the document. In response to the individual satisfying the criteria, the circuitry obscures the document from the view of the individual.