Abstract: An electronic contact lens. In some embodiments, the electronic contact lens includes: a power management circuit; and a first cell, the power management circuit including an active switch, the active switch being configured to isolate the first cell from other contact lens elements when the power management circuit is powered down.

Abstract: In one aspect, the LEDs in an LED array include a semiconductor mesa and a ruthenium reflector positioned above the top surface of the semiconductor mesa. Working downwards from the ruthenium reflector, the mesa includes a top p-layer, an active region such as a quantum well region, and a bottom n-layer. The n- and p-layers may be reversed, so that the top layer is an n-layer and the bottom layer is a p-layer. The semiconductor layers have a mesa shape, with a smaller top surface and the ruthenium reflector above that. The sidewalls of the mesa extend downwards and outwards from the top surface.

Abstract: An electronic contact lens. In some embodiments, the electronic contact lens includes: a receiver, including: a voltage-controlled oscillator; a phase-alignment circuit, connected to a control input of the voltage-controlled oscillator; and an offset-compensating circuit, connected to the control input of the voltage-controlled oscillator, the receiver being configured: to operate in: a calibration mode, or an operating mode; and to select, in the calibration mode, an operating-mode setting of the offset-compensating circuit, the selecting including: adjusting the offset-compensating circuit, and monitoring an output frequency of the voltage-controlled oscillator.

Abstract: Color conversion layers, methods of making color conversion layers, monolithic color, micro-light-emitting diode displays and methods of making monolithic, color, micro-light-emitting diode displays are disclosed.

Abstract: An electronic intraocular device is implantable into the capsular bag of a wearer's eye. In some cases, the intraocular device may include a femtoprojector. The femtoprojector projects images onto the wearer's retina when the electronic intraocular device is implanted in the wearer's eye. Different haptic designs may be used to keep the femtoprojector in position. In some embodiments, an imager is contained in a contact lens worn by the wearer. Images captured by the contact lens imager may be relayed to the intraocular femtoprojector. In some cases, the intraocular device may include an electronic capsular tension ring with a femtoimager. The femtoimager may capture images of the wearer's retina, for example for purposes of monitoring eye health.

Abstract: An electronic intraocular device is implantable into the capsular bag of a wearer's eye. In some cases, the intraocular device may include a femtoprojector. The femtoprojector projects images onto the wearer's retina when the electronic intraocular device is implanted in the wearer's eye. Different haptic designs may be used to keep the femtoprojector in position. In some embodiments, an imager is contained in a contact lens worn by the wearer. Images captured by the contact lens imager may be relayed to the intraocular femtoprojector. In some cases, the intraocular device may include an electronic capsular tension ring with a femtoimager. The femtoimager may capture images of the wearer's retina, for example for purposes of monitoring eye health.

Abstract: A display device suitable for augmented reality glasses or other display applications includes a three panels of ultra-dense micro-LED arrays integrated in a compact form factor. The panels each monochromatically generate red, green, and blue components of an image, and an optical element optically combines the image components to form an output image. Each panel includes a backplane with timing logic and CMOS pixel drivers for driving the micro-LED arrays. The backplanes may be interconnected in a master-slave configuration in which a master backplane receives image data from a host processor and sends image data directly or indirectly to the slave backplanes. The master backplane may furthermore output various timing signals to the slave backplanes to synchronize output of the image components.

Abstract: An electronic contact lens. The electronic contact lens includes an energy storage device and a charging circuit for charging the energy storage device. The electronic contact lens is configured to disable the charging circuit when the contact lens is worn.

Abstract: Quantum dots that are cadmium-free and/or stoichiometrically tuned are disclosed, as are methods of making them. Inclusion of the quantum dots and others in a stabilizing polymer matrix is also disclosed. The polymers are chosen for their strong binding affinity to the outer layers of the quantum dots such that the bond dissociation energy between the polymer material and the quantum dot is greater than the energy required to reach the melt temperature of the cross-linked polymer.

Abstract: A system and method for authentication. In some embodiments, the method includes displaying a plurality of objects to a user's left eye and to the user's right eye, and monitoring the user's eye positions while the user looks at a subset of the displayed objects, one at a time. The method may further include comparing an angular offset for an object of the plurality of objects to a vergence measured for the user's eyes while the user looks at the object.

Abstract: Methods of modifying the composition of layers using selectively absorbing films are described. The composition of a layer can be modified by applying a selectively absorbing film in proximity to the applied coating and components of the layer can be selectively removed to provide a modified layers. The methods can be used to increase the concentration of particles in the layer.

Abstract: A system includes an electronic contact lens that obtains sensor measurements from integrated motion sensors or other types of sensors and a processing module that estimates a mental state of an individual based on the sensor measurements. The processing module identifies patterns of eye movements and analyzes how these patterns change over time. Based on anatomical relationships between eye movement and mental state, the processing module estimates characteristics of the individual such as fatigue, intoxication, injury, or a medical condition that have known effects on eye movement patterns. The electronic contact lens system generates an output indicative of the estimated mental state to alert the individual to the detected condition or to initiate an automated action.

Abstract: A micro-LED display has an array of separately controllable micro-LEDs and corresponding pixel drivers. The pixel drivers have pulse-width modulation (PWM) generator circuits for the LEDs. The PWM generator circuits include the following. N input nodes are coupled to receive N control bits that determine a brightness of the LEDs. An output node is coupled to output the drive signal to the LEDs. Each of N transistors are connected between one of the input nodes and the output node. Each transistor is controlled by a clock signal CKn and couples the input node to the output node as controlled by the clock signal CKn.

Abstract: A system includes a pair of electronic contact lenses that obtain respective motion sensor measurements in response to eye movements. A tracking module derives estimated orientations for both eyes based on the sensor measurements and a set of correlations and constraints that describe human eye movement. The model describes the limited number of ways that an individual eye can move and relationships between relative movement of the left and right eye. The tracking module performs filtering based on the measurements and the eye model to suppress noise and generate orientation estimates for both eyes.

Abstract: A contact lens comprises a variable focal length lens embedded within the contact lens and a plurality of oxygen channels extending from an oxygen-permeable outer layer of the contact lens to an oxygen-permeable inner layer of the contact lens. The variable focal length lens is embedded within a non-oxygen-permeable core layer of the contact lens. The contact lens comprises a controller configured to change the operating mode of the contact lens by adjusting the focal distance of the variable focal length lens, for instance in response to an input from a user or in response to determining that the user is looking at a nearby object. For instance, the controller can configure the contact lens to operate in a reading mode or in a normal focus mode.

Abstract: High-density GaN-based LED displays fabricated using wafer-to-wafer hybrid bonding and incorporating s color conversion region are disclosed.

Abstract: Small optics (femtooptics) may be made with optical metasurfaces or diffractive surfaces. Baffles may be formed in the femtooptics with through-glass-via techniques or a variety of etching strategies. Femtooptics may in addition be made using wafer stacking techniques. Variations and combinations of these approaches lead to femtooptics manufacturable in vast quantities by semiconductor wafer processing techniques, also referred to as wafer level optics.

Abstract: Described herein are eye-controlled user-machine interaction systems and methods that, based on input variables that comprise orientation and motion of an eye-mounted display (EMD), assist the wearer of a contact lens carrying the EMD to control and navigate a virtual scene that may be superimposed onto the real-world environment. Various embodiments of the invention provide for smooth, intuitive, and naturally flowing eye-controlled, interactive operations between the wearer and a virtual environment. In certain embodiments, this is accomplished by revealing layers of virtual objects and content based on eye-tracking and other motion information.

Abstract: An augmented reality device manages display of an interactive icon in a manner that enables selection by a simple and intuitive gesture. The interactive icon may initially be displayed at a predefined target position outside the fovea where it is visible in the near peripheral vision without being distracting to the user. The augmented reality device may control the icon to behave like a stationary object with respect to changes in orientation until selection or repositioning criteria are met. Upon detection repositioning criteria, the augmented reality device may reposition the icon to the target position. Selection of the icon may control functions such as alerting the user to an available notification, opening or closing a menu, or performing other actions associated with operation of the augmented reality device.

Abstract: Quantum dots that are cadmium-free and/or stoichiometncally tuned are disclosed, as are methods of making them. Inclusion of the quantum dots and others in a stabilizing polymer matrix is also disclosed. The polymers are chosen for their strong binding affinity to the outer layers of the quantum dots such that the bond dissociation energy between the polymer material and the quantum dot is greater than the energy required to reach the melt temperature of the cross-linked polymer.