Abstract: Disclosed is a method for authenticating and/or checking the integrity of a subject, including:—visually superimposing, optically or electronically:—at least one so-called authentication image of at least one authentication region of an authentic subject, the authentication image including at least one texture of random composition,—and, also, the authentication region per se of a candidate subject or at least one verification image of the authentication region of the candidate subject,—in the event of observing, on the image resulting from the superimposition, a Glass pattern optical phenomenon in the authentication region, concluding that the candidate subject is the authentic subject and/or the at least partial integrity of the authentication region of the authentic subject.

Abstract: A method of performing Raman spectroscopy can include guiding a Raman pump beam with an optical fiber, where the Raman pump beam inducing fluorescence in the optical fiber. The beam and the fluorescence are coupled to a photonic integrated circuit (PIC) via the fiber. The beam is used to excite a sample in optical communication with the PIC via evanescent coupling and induces Raman scattering in the sample. The Raman scattering is collected via the PIC, and the Raman pump beam as well as the fluorescence is filtered out from the Raman scattering via the PIC.

Abstract: A nanohole array (NHA)-based plasmonic sensor (e.g., gas/condensed phase sensor), their preparation, and their use to detect and analyze samples, especially mixtures of chemicals/bio-chemicals.

Abstract: The present invention enables an analysis device that utilizes light absorption to measure concentrations of target components by means of a simple calculation, and without any complex spectrum calculation processing being required, and analyzes target components that are contained in a sample, and is provided with a light source that emits modulated light whose wavelength is modulated relative to a central wavelength using a predetermined modulation frequency, a photodetector that detects an intensity of sample light obtained when the modulated light is transmitted through the sample, a correlation value calculation unit that calculates correlation values between intensity-related signals that are related to the intensity of the sample light, and predetermined feature signals, and a concentration calculation unit that calculates concentrations of the target components using the correlation values obtained by the correlation value calculation unit.

Abstract: A detection device serves for detecting a structure on an area portion of a lithography mask. The detection device has a first spatially resolving detector and also a further spatially resolving detector arranged separately therefrom. The first spatially resolving detector is embodied as a high-intensity (HI) detector and is arranged in an HI beam path of the detection light which emanates from the mask area portion. The further spatially resolving detector is embodied as a low-intensity (LI) detector and is arranged in an LI beam path of the detection light. The HI beam path on the one hand and the LI beam path on the other hand are embodied such that the HI detector is illuminated with a detection light intensity that is at least twice the magnitude of the detection light intensity with which the LI detector is illuminated. The two spatially resolving detectors are embodied for simultaneously detecting the detection light.

Abstract: A method of detecting a shale inhibitor and/or a salt content in a wellbore servicing fluid (WSF), the method comprising determining a water salinity of a wellbore servicing fluid; dosing a known volume of the wellbore servicing fluid into a container; optionally adding a known volume of diluent (e.g., water) and mixing to provide a test sample; combining the test sample with a chromophore specific to the shale inhibitor and/or the salt, respectively, and optionally mixing; measuring the shale inhibitor content and/or the salt content, respectively, of the test sample using colorimetry; reporting the data from the measuring to a computer control system; determining a wellbore servicing fluid treatment based on the measured shale inhibitor content and/or salt content; subjecting the wellbore servicing fluid system to the treatment; and optionally waiting for a waiting time to retest the wellbore servicing fluid system and repeating.

Abstract: A waveguide optical gyroscope (WOG) is disclosed, which may include: an emitter; an integrated interferometer disposed on a silica planar lightwave circuit (PLC) and comprising a multilayer waveguide loop disposed in a first cladding material and interposed between layers of at least a second cladding material having an index of refraction lower than an index of refraction of the first cladding material; a pump source configured to pump the first cladding material with a signal that compensates for a propagation loss in the multilayer waveguide loop; and a micro-optic component configured to receive an output of the emitter and to guide the output into the integrated interferometer.

Abstract: Apparatuses, methods, and systems for generating signatures based on sensing one or more gas concentration conditions are disclosed. One method includes sensing, by one or more sensors, levels of a gas over time for a plurality of gas concentration conditions, receiving, by a controller, the sensed levels of gas over time for the plurality of gas concentration conditions, and generating, by the controller, a plurality of signatures, wherein one or more signatures is generated for one or more gas concentration conditions based on the sensed levels of gas over time, and determining whether to take action or not to take action.

Abstract: A process operable using a computerized system (300) grades the clarity of a diamond (315, 400) as a function of internal defects within its body (315, 400). The computerized system (300) includes an optical image acquisition device (310), a processor module (320) and an output module (340) operably interconnected together. The process includes the steps of (i) acquiring via an optical image acquisition device (310) a plurality of top view images of a diamond (315, 400); (ii) in a processor module (320), detecting defects within the body of the diamond (315, 400); and (iii) from an output module (340), providing a signal indicative of the clarity grade assigned in (ii).

Abstract: A method for constructing a meshed model and a discrete chromatography of eight primary color HSB color space is provided. By a meshed digital model and a discrete algorithm of color space, the color value and the color distribution in any point, line, surface and space area in the HSB color space can be quickly obtained based on color values of eight primary colors and coordinate values of mesh points in the HSB color space, thereby (i) realizing the full color gamut discrete chromatography of the HSB color space, (ii) realizing the visualization of the full color gamut of the color space, and (iii) improving the work efficiency of color matching.

Abstract: Systems and methods for determining the osmolarity of a sample are provided. Aspects of the subject methods include contacting a sensing surface of a surface plasmon resonance based sensor with a sample, and generating one or more data sets at at least two wavelengths over a time interval, wherein the data sets are used to determine the osmolarity of the sample. The subject methods find use in determining the osmolarity of a sample, such as a biological sample (e.g., a tear fluid), and in the diagnosis and/or monitoring of various diseases and disorders, such as, e.g., dry eye disease.

Abstract: One variation of a system for tracking and responding to Sun exposure includes: a housing configured to transiently attach to a port on a first garment; a jack coupled to the housing configured to transiently engage a port on the first garment; a radiation sensor arranged in the housing and configured to detect solar radiation incident on the housing; and a controller configured to: read an identifier of the first garment from the port via the jack; based on the identifier, estimate a skin exposure of a user wearing the first garment; read a solar radiation value from the radiation sensor at a first time; and, based on the solar radiation value and the skin exposure, estimate a solar radiation exposure of the user at the first time.

Abstract: Aspects of the present disclosure include methods for spectrally resolving light from fluorophores having overlapping fluorescence spectra in a sample. Methods according to certain embodiments include detecting light with a light detection system from a sample having a plurality of fluorophores having overlapping fluorescence spectra and spectrally resolving light from each fluorophore in the sample. In some embodiments, methods include estimating the abundance of one or more of the fluorophores in the sample, such as on a particle. In certain instances, methods include identifying the particle in the sample based on the abundance of each fluorophore and sorting the particle. Methods according to some embodiments includes spectrally resolving the light from each fluorophore by calculating a spectral unmixing matrix for the fluorescence spectra of each fluorophore. Systems and integrated circuit devices (e.g., a field programmable gate array) for practicing the subject methods are also provided.

Abstract: A system for facilitating the measurement of optical parameters of a substance sitting on a surface, so that identification of the substance by reflectance spectroscopy can be made without ambiguity; the system comprises a structure using a bistatic arrangement and an accompanying method to limit, to just two beams, the propagation of light from a laser transmitter capable of producing coherent light of multiple wavelengths, via an interposed transparent dielectric, to a receiver thereby preventing multiple reflections within the transparent dielectric from reaching the receiver; and the bistatic arrangement comprises a multi-wavelength laser transmitter and a receiver mounted on a telescoping boom, with both the laser transmitter and receiver being independently orientable, with the positions and orientations of the laser transmitter, the receiver and the telescoping boom electronically sensed at all times.

Abstract: An apparatus for detecting material within a sample includes a light emitting unit for directing at least one light beam through the sample. The at least one light beam has a unique signature combination associated therewith responsive to passing through the sample. A Raman spectroscopic unit receives the at least one light beam that has passed through the sample and performs a Raman spectroscopic analysis to detect a first signature associated with the sample. An infrared spectroscopic unit receives the at least one light beam that has passed through the sample and performs an infrared spectroscopic analysis to detect a second signature associated with the sample. A database includes a plurality of unique combinations of the first signature and the second signature. Each of the plurality of unique combinations of the first signature and the second signature are associated with a particular material.

Abstract: A grayscale tracking sensing module includes: a main control unit, and a grayscale acquisition unit comprising at least five grayscale sensors electronically connected to the main control unit. The at least five grayscale sensors are formed a V-shape, with one of the grayscale sensors arranged at an apex of the V-shape and the rest of the grayscale sensors offsettingly arranged at two opposite sides of said one of the grayscale sensors. A smart terminal are also provided.

Abstract: A cell analyzer and a sorting method for the cell analyzer are disclosed. Multiple optical signals generated by each of particles irradiated with light in a blood sample in a detection region are collected. The particles includes a first category of particles and a second category of particles. For each of the particles, Intensities of a first group of optical signals, which includes at least two optical signals selected from the multiple optical signals, and a pulse width of a second group of optical signals, which includes at least one optical signal selected from the multiple optical signals are acquired. For each of the particles, one or more reinforcement signals related to the particle are calculated based on an intensity of a first optical signal selected from the first group of optical signals and a pulse width of a second optical signal selected from the second group of optical signals, where the first optical signal is as same as or different from the second optical signal.

Abstract: Apparatuses, methods, and systems for detecting a substance are disclosed. One system includes a light source, an optical cavity, a cavity detector, and a processor. The light source generates a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at multiple wavelengths. The optical cavity receives the beam of electro-magnetic radiation, wherein the physical characteristics of the cavity define a plurality of allowed axial-plus-transverse electro-magnetic radiation modes, wherein only a subset of the allowed axial-plus-transverse electro-magnetic radiation modes are excited when the optical cavity receives the beam of electro-magnetic radiation. The cavity detector senses electro-magnetic radiation emanating from the optical cavity.

Abstract: This disclosure relates to a system for scanning crops. A line scan distance sensor measures a distance of the crops from the sensor and generates distance data indicative of the distance of the crops from the sensor at a measurement angle. A mover system moves the line scan distance sensor or the crops perpendicular to the distance of the crops from the sensor. A rotary encoder associated with the mover system generates movement data indicative of a movement of the distance sensor or the crops perpendicular to the distance of the crops from the sensor. A data collector associates the distance data from the distance sensor with relative positioning data based on the movement data from the rotary encoder and stores the distance data associated with the relative positioning data on a data store. The system allows accurate relative spatial alignment of sequential line scans. As a result, an extremely high resolution in the direction of movement can be achieved.

Abstract: A mannikin-based optical analyzer for analyzing an exposure of a subject to an environmental lighting condition. The analyzer has a mannikin with an outer surface replicating a facial profile of the subject, an interior inside the outer surface, and at least one pupil for admission of light into the interior of the mannikin. The analyzer has at least one optical detector configured to acquire and wavelength analyze light directed through the at least one pupil.