Abstract: The system includes an optical element to receive, responsive to transmitting the optical beam, a first returned reflection having a first lag angle relative to the optical axis. The optical element is to steer, based on the first lag angle, the first returned reflection to generate a first steered beam that is separated from the optical axis by a first offset. The system includes a multi-tip coupler that includes multiple tips. The multi-tip coupler is to receive, from the optical element, a peak power of the first steered beam at an input of a first tip of the multi-tip coupler. The input of the first tip is separated from the optical axis by the first offset. The multi-tip coupler is to combine energy from the multiple tips of the multiple-tip coupler to generate a first single mode signal to be used for detecting a position of the first object.

Abstract: A polarization splitter-rotator (PSR) is described. The PSR having a silicon nitride based waveguide including a first silicon nitride segment comprising a tapered width in a longitudinal direction and a ridge extending in a transverse direction and an adiabatic coupler coupled with the first silicon nitride segment.

Abstract: A clothing aroma-enhancing bead composition and a method for preparing same are provided. The clothing aroma-enhancing bead composition includes the following raw materials in percentage by weight: 60-95% of sugar granules, 1.0-20% of liquid essence, and 0.5-20% of silica. The clothing aroma-enhancing bead composition takes the sugar granules as a core, and surfaces of the sugar granules are coated with the liquid essence and the silica. The clothing aroma-enhancing bead composition is attractive in appearance, good in solubility, and simple in production process.

Abstract: A deglaring film includes a substrate having a first surface that accepts input light along a nadir and having an input light distribution comprising a Lambertian light distribution and a second surface comprising a plurality of prism microstructures each prism microstructure having a peak-shaped cross section. The deglaring film transforms the input light to output light emerging from the second surface along the nadir and having an output light distribution with an intensity of light angles greater than 60 degrees from the nadir being less an intensity of light of the input light distribution greater than 60 degrees from the nadir, wherein an apex angle of some of the plurality of prism microstructures being chosen such that the output light distribution has a glare below a predetermined level in an axis oriented along the apex direction and an output light distribution axis orthogonal to the apex direction.

Abstract: An edge-lit back light unit includes a specular reflector and an edge-lit light guide film positioned above the specular reflector, both configured to provide peak optical distribution and FWHM angle of diffusion along a light propagation direction. A diffuser film above the edge-lit light guide film has a bottom-side that faces the edge-lit light guide film and a top-side that faces away from the edge-lit light guide film, and has a plurality of parallel prism microstructures on the bottom-side, some have an apex direction that is generally along the light propagation direction. The diffuser film has a plurality of parallel prism microstructures on the top-side having an apex direction that is rotated with respect to the apex direction of the plurality of parallel prism microstructures on the bottom-side such that the apex direction of the parallel prism microstructures on the top-side is generally perpendicular to the light propagation direction.

Abstract: A light transmissive substrate that transforms light having a Lambertian distribution includes a substrate having a plurality of microstructures on a first surface, where each of the plurality of microstructures comprises an array of folded micro-pyramid microstructures, wherein each folded micro-pyramid microstructure comprises a base section with a roof angle and a recess being formed in a shape of a micro-pyramid and comprising a recess roof angle, wherein light having a Lambertian distribution that enters the first surface of the substrate is transformed into light having a distribution with a maximum intensity at an angle away from nadir and a minimum intensity at nadir that exits a second surface of the substrate.

Abstract: Apparatus and methods for improving optical signal collection in an integrated device are described. A microdisk can be formed in an integrated device and increase collection and/or concentration of radiation incident on the microdisk and re-radiated by the microdisk. An example integrated device that can include a microdisk may be used for analyte detection and/or analysis. Such an integrated device may include a plurality of pixels, each having a reaction chamber for receiving a sample to be analyzed, an optical microdisk, and an optical sensor configured to detect optical emission from the reaction chamber. The microdisk can comprise a dielectric material having a first index of refraction that is embedded in one or more surrounding materials having one or more different refractive index values.

Abstract: An edge-lit back light unit includes a specular reflector and an edge-lit light guide film positioned above the specular reflector, both configured to provide peak optical distribution and FWHM angle of diffusion along a light propagation direction. A diffuser film above the edge-lit light guide film has a bottom-side that faces the edge-lit light guide film and a top-side that faces away from the edge-lit light guide film, and has a plurality of parallel prism microstructures on the bottom-side, some have an apex direction that is generally along the light propagation direction. The diffuser film has a plurality of parallel prism microstructures on the top-side having an apex direction that is rotated with respect to the apex direction of the plurality of parallel prism microstructures on the bottom-side such that the apex direction of the parallel prism microstructures on the top-side is generally perpendicular to the light propagation direction.

Abstract: A multidirectional driving industrial handling vehicle includes a vehicle frame. Two load-bearing wheels with a steering function are symmetrically arranged on a side of the vehicle frame adjacent to a front, and a drive wheel with driving and steering functions is arranged on a side of the vehicle frame adjacent to a rear. Specifically, the load-bearing wheel is rotatably arranged on a first rotary support member through a pin and a wheel frame, and the first rotary support member is rotatably arranged on the vehicle frame. The vehicle frame is provided with a first steering motor configured to drive the load-bearing wheel to rotate. By connecting each wheel of the forklift with the steering device, each wheel has independent steering function, so that the whole vehicle has a variety of driving modes such as straight driving, lateral driving, oblique driving, in-situ rotation, etc., and realizes multidirectional driving.

Abstract: Systems and methods for optical power distribution within an integrated device, in a substantially uniform manner, to a large number of sample wells and/or other photonic elements. The integrated device and related instruments and systems may be used to analyze samples in parallel. The integrated device may include a grating coupler configured to receive light from an excitation source and optically couple with multiple waveguides configured to couple with sample wells. Vertical extents of optical modes of individual waveguides may be modulated to adjust confinement of light within the waveguides. This modulation may enable more uniform distribution of excitation light to the sample wells, improve excitation efficiency, and prevent overpower on regions of the integrated device.

Abstract: A light transmissive substrate that transforms light having a Lambertian distribution includes a substrate having a plurality of microstructures on a first surface, where each of the plurality of microstructures comprises an array of folded micro-pyramid microstructures, wherein each folded micro-pyramid microstructure comprises a base section with a roof angle and a recess being formed in a shape of a micro-pyramid and comprising a recess roof angle, wherein light having a Lambertian distribution that enters the first surface of the substrate is transformed into light having a distribution with a maximum intensity at an angle away from nadir and a minimum intensity at nadir that exits a second surface of the substrate.

Abstract: Apparatus and methods relating to photonic bandgap optical nanostructures are described. Such optical nanostructures may exhibit prohibited photonic bandgaps or allowed photonic bands, and may be used to reject (e.g., block or attenuate) radiation at a first wavelength while allowing transmission of radiation at a second wavelength. Examples of photonic bandgap optical nanostructures includes periodic and quasi-periodic structures, with periodicity or quasi-periodicity in one, two, or three dimensions and structural variations in at least two dimensions. Such photonic bandgap optical nanostructures may be formed in integrated devices that include photodiodes and CMOS circuitry arranged to analyze radiation received by the photodiodes.

Abstract: Systems and methods for optical power distribution within an integrated device, in a substantially uniform manner, to a large number of sample wells and/or other photonic elements. The integrated device and related instruments and systems may be used to analyze samples in parallel. The integrated device may include a grating coupler configured to receive light from an excitation source and optically couple with multiple waveguides configured to couple with sample wells. Vertical extents of optical modes of individual waveguides may be modulated to adjust confinement of light within the waveguides. This modulation may enable more uniform distribution of excitation light to the sample wells, improve excitation efficiency, and prevent overpower on regions of the integrated device.

Abstract: A light transmissive substrate for transforming a Lambertian light distribution into a batwing light distribution. The light transmissive substrate includes a first surface comprising a plurality of microstructures, and a second surface on a side of the substrate opposite the first surface. The substrate is configured to receive light in a Lambertian distribution from a light source at the first surface and transform the light into a batwing distribution exiting the second surface. The batwing distribution having a peak intensity at about ±30° to about ±60° from X and Y axes, and a minimum intensity at nadir.

Abstract: A photonics grating coupler to transmit light in a light detection and ranging (LiDAR) system includes a receiver component adapted to receive light transmitted from an optical source. The photonics grating coupler includes a plurality of light scattering elements arranged in a rectangular pattern, wherein the plurality of light scattering elements comprises a first set of light scattering elements, each light scattering element comprising a first cross section and a first duty cycle and adapted to receive the light from the receiver to produce reflected light. The photonics grating coupler also includes a second set of light scattering elements, each light scattering element comprising a second cross section and a second duty cycle and adapted to transmit the reflected light towards a waveguide coupled to receive the reflected light.

Abstract: A frequency-modulated continuous-wave (FMCW) light detection and ranging (LiDAR) system includes an optical source to direct optical beams towards a target object, and a plurality of return signals are returned to the LiDAR system. The LiDAR system includes a reflective optical component to return a portion of the plurality of optical beams along a return path as a local oscillator (LO) signal, a rotating scanning mirror between the optical source and the target object, and a plurality of optical detectors. The plurality of optical detectors receives and consumes the plurality of return signals. The LiDAR system also includes an optical circuit implemented on a photonics chip that include a plurality of photonics couplers. The plurality of photonics couplers produces a plurality of outputs that are combined by the optical circuit. A signal processing system consumes the outputs.

Abstract: An edge-lit back light unit includes a specular reflector and an edge-lit light guide film positioned above the specular reflector, both configured to provide peak optical distribution and FWHM angle of diffusion along a light propagation direction. A diffuser film above the edge-lit light guide film has a bottom-side that faces the edge-lit light guide film and a top-side that faces away from the edge-lit light guide film, and has a plurality of parallel prism microstructures on the bottom-side, some have an apex direction that is generally along the light propagation direction. The diffuser film has a plurality of parallel prism microstructures on the top-side having an apex direction that is rotated with respect to the apex direction of the plurality of parallel prism microstructures on the bottom-side such that the apex direction of the parallel prism microstructures on the top-side is generally perpendicular to the light propagation direction.

Abstract: Apparatus and methods for improving optical signal collection in an integrated device are described. A microdisk can be formed in an integrated device and increase collection and/or concentration of radiation incident on the microdisk and re-radiated by the microdisk. An example integrated device that can include a microdisk may be used for analyte detection and/or analysis. Such an integrated device may include a plurality of pixels, each having a reaction chamber for receiving a sample to be analyzed, an optical microdisk, and an optical sensor configured to detect optical emission from the reaction chamber. The microdisk can comprise a dielectric material having a first index of refraction that is embedded in one or more surrounding materials having one or more different refractive index values.