Abstract: An eyepiece for an augmented reality display system. The eyepiece can include a waveguide substrate. The waveguide substrate can include an input coupler grating (ICG), an orthogonal pupil expander (OPE) grating, a spreader grating, and an exit pupil expander (EPE) grating. The ICG can couple at least one input light beam into at least a first guided light beam that propagates inside the waveguide substrate. The OPE grating can divide the first guided light beam into a plurality of parallel, spaced-apart light beams. The spreader grating can receive the light beams from the OPE grating and spread their distribution. The spreader grating can include diffractive features oriented at approximately 90° to diffractive features of the OPE grating. The EPE grating can re-direct the light beams from the first OPE grating and the first spreader grating such that they exit the waveguide substrate.

Abstract: Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.

Abstract: A MEMS-based vertical cavity surface emitting laser (VCSEL) includes an embedded photodiode. A representative VCSEL includes a distributed Bragg reflector (DBR), a photodiode structure located within the distributed Bragg reflector, an active region overlying the distributed Bragg reflector, and a MEMS upper reflector disposed over the active region. The VCSEL may be configured as an optical sensor. The laser cavity and hence a working wavelength of the sensor may be tuned by modulating the MEMS reflector such as through an applied voltage.

Abstract: Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.

Abstract: Apparatus and methods for forming and printing hollow bodies from amorphous materials to form three-dimensional objects are provided. Apparatus provide a hollow body forming and printing machine, and methods for determining a desired amount of impact deformation for the hollow spheres, including calculating specific characteristics of the hollow spheres and the amorphous material, deriving a target viscosity range, adjusting the apparatus to satisfy the target viscosity range, and using the apparatus to form a plurality of hollow spheres with controlled deformation.

Abstract: An eyepiece for an augmented reality display system. The eyepiece can include a waveguide substrate. The waveguide substrate can include an input coupler grating (ICG), an orthogonal pupil expander (OPE) grating, a spreader grating, and an exit pupil expander (EPE) grating. The ICG can couple at least one input light beam into at least a first guided light beam that propagates inside the waveguide substrate. The OPE grating can divide the first guided light beam into a plurality of parallel, spaced-apart light beams. The spreader grating can receive the light beams from the OPE grating and spread their distribution. The spreader grating can include diffractive features oriented at approximately 90° to diffractive features of the OPE grating. The EPE grating can re-direct the light beams from the first OPE grating and the first spreader grating such that they exit the waveguide substrate.

Abstract: A method of triggering an action includes: determining that a mobile device is under water by: determining that an amplitude of a satellite positioning system (SPS) signal, or a wireless communication signal, or a combination thereof, received by the mobile device is below a threshold amplitude; or comparing data from a motion sensor of the mobile device with motion sensor data characteristic of entering water; or a combination thereof; determining that the mobile device has an action-inducing relationship to water; and taking the action in response to determining that the mobile device has the action-inducing relationship to water.

Abstract: The disclosed eye-tracking systems may include a visible light display having visible light pixels, at least one infrared pixel positioned within bounds of the visible light display, and an infrared sensor positioned and configured to detect infrared light originating from the at least one infrared pixel and reflected from an eye of the user. Related head-mounted display systems and methods for eye tracking are also disclosed.

Abstract: An apparatus for drilling with a drilling machine including a boom for supporting a drill and a feed for feeding the drill. A single joystick is adapted for controlling the movement of the boom and the feed independently or together, such as according to different protocols (e.g., for causing movement of the boom and feed in the same direction, or in different directions). Related methods are also disclosed.

Abstract: An eyebox region is illuminated with first coherent light and second coherent light having a different wavelength than the first coherent light. A first self-mixed interferometer (SMI) signal is generated in response to first feedback light received back from the eyebox region. A second SMI signal is generated in response to second feedback light received back from the eyebox region. Eye data is generated in response to at least the first SMI signal and the second SMI signal.

Abstract: A retinal imaging system includes a projector, an imaging device, and a controller coupled to an eye tracking system under test. The projector emits a light pattern to be delivered to a pupil of an eye, a location of the pupil being estimated by the eye tracking system under test. The imaging device captures one or more images of a retina of the eye illuminated with at least a portion of the light pattern. The controller determines one or more eye tracking parameters based on the captured one or more images of the retina. The controller compares each determined eye tracking parameter with each of estimated one or more eye tracking parameters, wherein values for the one or more eye tracking parameters are estimated by the eye tracking system under test. The controller characterizes each estimated eye tracking parameter based on the comparison.

Abstract: A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.

Abstract: A light source of a self-mixed interferometer (SMI) emits infrared light. The infrared light is directed to an eyebox location with the scanning module by scanning the infrared light into a waveguide. Feedback infrared light is measured by a light sensor of the SMI.

Abstract: A new and distinct cultivar of Caladium plant named ‘WON OF14-1246’, characterized by its compact, relatively short to intermediate in height; upright to somewhat mounding plant habit; dense, leafy and bushy appearance; vigorous growth habit and rapid growth rate; lance-type leaves that are greenish white to white in color with interveinal areas that are variably flushed with red to purplish red, veins that are greyed green in color and thin dark green-colored margins and petioles that are green to greenish tan brown in color.

Abstract: A new and distinct cultivar of Caladium plant named ‘THAI STR OF17-1082’, characterized by its intermediate in height and upright to mounding plant habit; dense, leafy and bushy appearance; moderately vigorous growth habit and rapid growth rate; lance-type leaves that are very dark green with a dark reddish brown cast appearing close to black in color; dark colored petioles that are close to black in color; and tolerance to full sunlight conditions.

Abstract: A new and distinct cultivar of Caladium plant named ‘WON OF14-1288’, characterized by its compact and mounding plant habit; dense, leafy and bushy appearance; vigorous growth habit and rapid growth rate; lance-type leaves that are medium green in color with white and creamy white-colored intervenous areas and pale green-colored venation; and petioles that are green to tannish green in color with brown-colored stippling and streaks.

Abstract: A new and distinct cultivar of Caladium plant named ‘BRZ STR 013-22173’, characterized by its intermediate height and upright to mounding plant habit; dense, leafy and bushy appearance; vigorous growth habit and rapid growth rate; lance-type leaves that are reddish bronze to dark orange in color with variable and random pink-colored spots; intervenous and leaf notch areas may be tinged with green especially on plants that have not been de-eyed; and petioles that are tan in color with faint brown-colored stippling, streaks and tessellations.

Abstract: A new and distinct cultivar of Caladium plant named ‘FRH OF15-107’, characterized by its short to intermediate in height and mounding plant habit; dense, leafy and bushy appearance; vigorous growth habit and rapid growth rate; fancy-type leaves that are dark green in color with dark red-colored centers; first emerging leaves are glossy and later emerging leaves are duller in luster; and petioles that are reddish pink in color with dense brownish green-colored streaks.

Abstract: A new and distinct cultivar of Caladium plant named ‘THAI RD OF14-1145’, characterized by its intermediate in height and upright to mounding plant habit; dense, leafy and bushy appearance; vigorous growth habit and rapid growth rate; lance-type leaves that are dark reddish purple in color with darker-colored venation; first emerging leaves have a metallic sheen; petioles that are close to black in color with pink-colored stripes; and tolerance to full sunlight conditions.