Abstract: A wearable waveguide display having multiple input projection arrays configured to project an image into a waveguide via separate input couplers and project the image via an output element. The wearable display can be configured in a number of configurations that minimize weight and maximize comfort and resolution of the projected images. In some embodiments, the wearable waveguide display includes a first microLED array which outputs light into a first input coupler and a second microLED array which outputs light into a second input coupler. The first input coupler and the second input coupler both in couple light into total internal reflection in a waveguide. The incoupled light is outcoupled via an output optical element.

Abstract: The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

Abstract: A waveguide display comprises: a waveguide supporting a single grating layer; a source of data-modulated light; a first input coupler for directing a first spectral band of light from the source into a first waveguide pupil; a second input coupler for directing a second spectral band of light from the source into a second waveguide pupil; an output coupler comprising multiplexed first and second gratings, at least one fold grating for directing the first spectral band along a first path from the first pupil to the output coupler and providing a first beam expansion; at least one fold grating for directing the second spectral band along a second path from the second pupil to the output coupler and providing a first beam expansion. The first multiplexed grating directing the first spectral band out of the waveguide in a first direction with beam expansion orthogonal to the first beam expansion.

Abstract: Disclosed herein are systems and methods for providing waveguide display devices utilizing overlapping integrated dual action (IDA) waveguides. One embodiment includes a waveguide display device including: a first input image source providing first image light; a second input image source provide second image light; a first IDA waveguide; and a second IDA waveguide. The first IDA waveguide and the second IDA waveguide may include an overlapping region where a first two-dimensionally expanded first image light, a second two-dimensionally expanded first image light, a first two-dimensionally expanded second image light, and a second two-dimensionally expanded second image light is ejected towards an eyebox. Advantageously, resolution may be enhanced and field of view may be expanded through the use of overlapping IDA waveguides.

Abstract: The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products. For the extraction of lithium from the liquid resources, an ion exchange reactor has a tank, ion exchange particles, particle traps, and provision to modulate pH of the liquid resource.

Abstract: A modular storage system of connectable, heavy-duty storage boxes, crates, rolling carts and/or dollies, work surfaces, organizers, trays, accessories is provided for internal and external item storage and organization and convenient access for use and transport, that is expandable, customizable and readily adaptable. Storage boxes have different sizes by length, width and/or height and have universal box-to-box connection system for stacking and connection to mounting accessories. Boxes have removable, customizable organization inserts (e.g., dividers, storage trays, bins, alignment trays for bins, and bins of different sizes). Box lid rib grid with bosses and undercuts expands internal organization, including cooperation with dual purpose dividers and accessories. Boxes have external mounting accessories to expand external organization. Different housing modes are provided including wall mount systems for wall or side of a truck or van, and different transport modes are provided (e.g.

Abstract: A modular storage system of connectable, heavy-duty storage boxes, crates, rolling carts and/or dollies, work surfaces, organizers, trays, accessories is provided for internal and external item storage and organization and convenient access for use and transport, that is expandable, customizable and readily adaptable. Storage boxes have different sizes by length, width and/or height and have universal box-to-box connection system for stacking and connection to mounting accessories. Boxes have removable, customizable organization inserts (e.g., dividers, storage trays, bins, alignment trays for bins, and bins of different sizes). Box lid rib grid with bosses and undercuts expands internal organization, including cooperation with dual purpose dividers and accessories. Boxes have external mounting accessories to expand external organization. Different housing modes are provided including wall mount systems for wall or side of a truck or van, and different transport modes are provided (e.g.

Abstract: Disclosed herein are methods for purifying RNA comprising poly A. Also disclosed herein are compositions such as surfaces and oligonucleotides for purifying RNA comprising polyA. Other embodiments are also disclosed. Commercially-available resins having polythymidine oligonucleotide ligands typically contain less than 30 thymidine (2?deoxy) residues and some commercial resin suppliers utilize a distribution of dT chain lengths, not of a discreet length.

Abstract: A computer implemented method for inserting advertisement content into a program content stream includes receiving, by a headend content server, the program content stream. The program content stream includes an advertisement insertion cue. The method further includes detecting the advertisement insertion cue in the program content stream, and the advertisement insertion cue indicates an insertion point in the program content stream for inserting an advertisement. The method further includes modifying the advertisement insertion cue to indicate an expiration date and time for playout of a first advertisement content to be inserted into the program content stream, and inserting the first advertisement content into the program content stream.

Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lumina configured to extract light from the second substrate along the second direction, wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.

Abstract: A waveguide apparatus, comprises: disposed in at least one layer: an input coupler; a first fold grating; a second fold grating; an output coupler; and a source of light optically coupled to the waveguide providing at least first and second polarizations of the light and at least one wavelength. The input coupler is configured to cause the first polarization light to travel along a first total internal reflection (TIR) path and the second polarization light to travel along a second TIR path.

Abstract: An optical display, including a first waveguide having a first set of surfaces, an input grating, a fold grating, and an output grating; an image input image node assembly; and a prismatic relay optics is provided. The prismatic relay optics may be configured to be optomechanically connected to the waveguide and the input image node assembly. The optical display is may also be configured to operate alone or as integrated with a headpiece to be used as a HUD. The HUD may have a first and a second configuration wherein the waveguide is decoupled or coupled.

Abstract: Mastering systems and methods of fabricating waveguides and waveguide devices using such mastering systems are described. Mastering systems for fabricating holographic waveguides can include using a master to control the application of energy (e.g. a laser, light, or magnetic beam) onto a liquid crystal substrate to fabricate a holographic waveguide into the liquid crystal substrate. Mastering systems for fabricating holographic waveguides in accordance with embodiments of the invention can include a variety of features. These features include, but are not limited to: chirp for single input beam copy (near i.e. hybrid contact copy), dual chirped gratings (for input and output), zero order grating for transmittance control, alignment reference gratings, 3:1 construction, position adjustment tooling to enable rapid alignment, optimization of lens and window thickness for multiple RKVs simultaneously, and avoidance of other orders and crossover of the diffraction beam.

Abstract: Typical waveguides rely on total internal reflection between the outer surfaces of substrates, which can make them highly susceptible to beam misalignment caused by nonplanarity of the substrates. In the manufacturing of the glass sheets commonly used for substrates, ripples can occur during the stretching and drawing of glass as it emerges from a furnace. Although glass manufacturers try to minimize ripples using predictions from mathematical models, it is difficult to totally eradicate the problem from the glass manufacturing process. Typically, these beam misalignments manifest themselves as image distortions and non-uniformities in the output illumination from the waveguide. Many embodiments of the invention are directed toward optically efficient, low cost solutions to the problem of controlling output image quality in waveguides manufactured using commercially available substrate glass and to the problem of compensating the image distortions and non-uniformity of curved waveguides.

Abstract: Waveguides and waveguide displays having a layer for blocking non-image light (i.e. haze) that could otherwise reduce contrast and degrade color gamut and uniformity, while providing high transmission to external light are provided. Many waveguides and displays incorporate at least one light control layer applied to at least one external surface of said waveguide and overlapping at least a portion of said at least one grating, to divert or block scattered light from said set of gratings that might otherwise enter said eyebox.

Abstract: Systems and methods related to a memory system with a predictable read latency from media with a long write latency are described. An example memory system includes an array of tiles configured to store data corresponding to a cache line associated with a host. The memory system further includes control logic configured to, in response to a write command from a host, initiate writing of a first cache line to a first tile in a first row of the tiles, a second cache line to a second tile in a second row of the tiles, a third cache line to a third tile in a third row of the tiles, and a fourth cache line in a fourth row of the tiles. The control logic is configured to, in response to a read command from the host, initiate reading of data stored in an entire row of tiles.

Abstract: Systems and methods for real-time color correction of waveguide-based displays are disclosed herein. In some embodiments, a color correction system is included. The color correction system may include a light source, a detector, and a waveguide. The waveguide includes an input grating to inputting illumination light from the light source into the waveguide; an illumination grating for deflecting the illumination light towards an eye; a detector grating to input illumination light reflected off the eye into the waveguide; and an output grating for outputting the reflected illumination light from the waveguide into the detector.

Abstract: An optical display comprises: a first waveguide comprising a first surface and a second surface, an input coupler, a fold grating, and an output grating. The input coupler receives collimated first wavelength light from an Input Image Node causes the light to travel within the first waveguide via total internal reflection between the first surface and the second surface to the fold grating. The fold grating provides pupil expansion in a first direction directs the light to the output grating via total internal reflection between the first surface and the second surface. The output grating provides pupil expansion in a second direction different than the first direction and causes the light to exit the first waveguide from the first surface or the second surface. At least one of the input coupler, fold grating and output grating is a rolled k-vector grating, and the fold grating is a dual interaction grating.

Abstract: Multiplexed reflection and transmission gratings, and methods of their manufacture, are provided that improve uniformity with laser light, that is, reduced banding and other illumination artifacts occurring in waveguides. The mechanism for this can be the multiple reflections between the waveguide reflecting surfaces and the reflection hologram, which promote illumination averaging as beam propagation processes within a waveguide. In some gratings, a beam splitter layer overlapping the multiplexed gratings can be provided for the purposes of reducing banding in a laser-illuminated waveguide. The beam splitter can be provided by one or more dielectric layers. The beamsplitter can have sensitivity to one polarization. The beamsplitter can be sensitive to S-polarization. The beam splitter can be an anti-reflection coating optimized for normal incidence that becomes reflective at high TIR angles when immersed in glass or plastic.

Abstract: A computer implemented method for inserting advertisement content into a program content stream includes receiving, by a headend content server, the program content stream. The program content stream includes an advertisement insertion cue. The method further includes detecting the advertisement insertion cue in the program content stream, and the advertisement insertion cue indicates an insertion point in the program content stream for inserting an advertisement. The method further includes modifying the advertisement insertion cue to indicate an expiration date and time for playout of a first advertisement content to be inserted into the program content stream, and inserting the first advertisement content into the program content stream.