Abstract: A spectral imaging device includes an imager, a scanning stage to establish relative motion between the imager and a sample in a scanning direction and an optical system controlling a light characteristic of a light beam constituting an image of the sample to the imager. The optical system includes a light varying element to receive the light beam and provide an output light beam with spatially varying light characteristic over a cross-section thereof. A set of redirecting optical elements direct light rays from the sample to form the light beam, and to focus the output light beam onto the imager. A controller controls the scanning stage and the imager to capture a plurality of image frames with an overlap including a defined shift that is greater than 1 pixel along the scanning direction between consecutive image frames. A computing device consolidates image data to provide an image of the sample.

Abstract: A method for recalibrating an electronic nose includes successively injecting, into a measurement chamber, reference gases that do not contain target compounds and that have various values of relative humidity. A measurement signal is determined in the course of each injection. Then, for each reference gas, a baseline is determined, which baseline is representative of the determined measurement signal. The baseline is also associated with the relative humidity of the reference gas present. A second correction function is determined on the basis of the determined baselines and of the predetermined values of relative humidity. The second correction function is then stored in a processing unit instead of a first correction function.

Abstract: A packaging material for the non-destructive detection of food quality, a preparation method of the packaging material, and a detection method using the packaging material are provided. The packaging material includes a film material covering the outside of the food, where the film material includes a flexible base layer, an adhesive layer, a transparent conductive layer, and a nanostructured layer which are sequentially stacked from the outer side to the inner side. The flexible base layer is a polydimethylsiloxane (PDMS) layer. The adhesive layer is a polyimide (PI) layer. The transparent conductive layer is an indium tin oxide (ITO) layer. The nanostructured layer is a silver nanoparticles layer. The preparation method includes spin-coating and curing PI on PDMS, sputtering ITO, self-assembling silver nanoparticles on the transparent conductive layer, and etching according to a pattern.

Abstract: Provided are a tire shape measurement device and a method. In a measurement mode in which air is injected into an inside of a tire mounted on a holding portion to inflate the tire and the tire and a non-contact sensor are relatively moved in a tire circumferential direction to detect a shape of a predetermined site of the tire over an entire circumference in the tire circumferential direction by the sensor, a detection unit of the sensor is covered with a cover portion is released. When the air is exhausted from the inside of the tire to an outside and the tire is deflated to remove the tire from the holding portion after the detection of the shape of the tire, a standby mode M1 in which the detection unit is covered with the cover portion is set.

Abstract: A ring laser gyroscope includes an optical block for generating laser beams that counter-propagate in a closed-loop type optical path, a dither mechanism for applying dither vibration for mitigating a lock-in phenomenon to the optical block, and a dither controller for controlling the dither vibration. The dither controller imparts randomness to the frequency of the angular velocity of the dither vibration.

Abstract: The present invention generally relates to the field of replicating or copying keys. More specifically, the present invention relates to creating a copy of a master key based on a captured image of the master key by using a laser scanning of the master key and decoding the master key based on the captured image. The present invention identifies a set of target key information based on the image of the master key to provide for the cutting of a duplicate key blade copy using a key scanning and cutting system located at a retail or end location. Additional key information may also be captured along with the image of the master key.

Abstract: An intraoral scanner comprises a housing, a light source for generating light, an optics system for focusing the light, a detector for detecting returning light reflected off an intraoral object, and a focus shifting mechanism configured to shift a focal plane of the optics system. The optics system is configured such that, after having passed through the optics system, an outermost chief ray of the light with respect to an optical axis of the optics system is divergent to the optical axis and an outermost marginal ray of the light with respect to the optical axis is parallel or divergent to the optical axis.

Abstract: Systems, methods, and apparatuses for distinguishing an interfering gas in a gas flow. An example system for distinguishing an interfering gas in a gas flow may include a treated tape configured to be in contact with the gas flow. The example system may further include a light source configured to emit at least three wavelengths of light from a light source. The example system may further include a photo diode configured to detect a reflected portion of each of the at least three wavelengths of light. The example system may further include a computing device. The computing device may be configured to analyze the reflected portion of each of the at least three wavelengths of light. The computing device may be further configured to distinguish the interfering gases in the gas flow using a 2-dimensional color space model.

Abstract: A system for monitoring a composition includes: an electromagnetic source that emits a beam; one or more evanescent field sensing element inside a tubular structure, arranged in series along a flow direction of the composition, and configured to be in direct contact with the composition; a waveguide that directs at least a portion of the beam to the evanescent field sensing element as an incident beam; and a detector configured to obtain a spectral distribution of the fingerprint beam. The evanescent field sensing element provides partial or total internal reflection of the incident beam at an interface between the evanescent field sensing element and the composition, and the incident beam interacts with the composition to form a fingerprint beam.

Abstract: The invention provides a wavelength tracking system comprising a wavelength tracking unit and an interferometer system. The wavelength tracking unit has reflection surfaces at stabile positions providing a first reflection path with a first path length and a second reflection path with a second path length. The first path length is substantially larger than the second path length.

Abstract: A bead appearance inspection device includes an input unit configured to enter input data related to a welding bead of a workpiece produced by welding, and a determination unit configured to perform an inspection determination related to a shape of the welding bead based on the input data. The determination unit determines which of a range of a value indicating a non-defective product zone, a range of a value indicating a gray zone, and a range of a value indicating a defective product zone a value obtained from the input data belongs to. The range of the value indicating the gray zone is between the range of the value indicating the non-defective product zone and the range of the value indicating the defective product zone.

Abstract: A device for determining a focal position of a laser beam, in particular a processing laser beam in a laser processing head, has an optical decoupling element for decoupling a partial beam from a beam path of the laser beam, a detector for detecting at least one beam parameter of the partial beam, and at least one optical element with an adjustable focal length, which is arranged in a region of the beam path of the partial beam between the optical decoupling element and the detector. Also disclosed is a laser processing head which includes a device of this type, as well as a method for determining a focal position of a laser beam.

Abstract: Described herein is a spectrometer device. The spectrometer device is configured for determining at least one spectral or spectroscopic information of at least one object. The spectrometer device is configured for determining intensities of constituent wavelength signals of at least one light beam propagating from the object to the spectrometer device. The spectrometer device includes at least one distance detector configured for determining at least one distance information about a distance between at least one object and the spectrometer device, at least one pixelated imaging detector configured for determining at least one image of the object, and at least one evaluation device configured for determining at least one material information of the object by evaluating of at least one image of the object determined by the pixelated imaging detector. The evaluation device is configured for performing at least one spectroscopic analysis of the determined intensities of constituent wavelength signals.

Abstract: Described herein are high intensity illumination systems including lighting arrays of lights, such as light emitting diodes, configured to illuminate a surface. The lighting arrays are configured to illuminate the surface with illumination comparable to or multiple times brighter than the ambient illumination, such as sunlight. Also described herein are methods of using a high intensity illumination system to illuminate a surface for applications including imaging, object detection, and object localization. The systems and methods described herein may be applied to a range of industries including farming, agriculture, construction, and autonomous vehicles.

Abstract: A night hyper-spectral remote sensing imaging system for multi-component atmospheric trace constituents includes a light source unit, a detection light path unit, an unmanned aerial vehicle tracking light path unit, and a control and processing unit, where the light source unit couples and outputs first light source light with different wavelength ranges capable of imaging at night; the detection light path unit collimates and outputs the first light source light, and receive remote sensing light fed back based on the first light source light; the unmanned aerial vehicle tracking light path unit tracks and positions an unmanned aerial vehicle based on an unmanned aerial vehicle tracking light path; and the control and processing unit collects an original spectrum of the first light source light and a remote sensing spectrum and perform imaging analysis and process on the multi-component atmospheric trace constituents, and adjust and control the tracking light path.

Abstract: Distributed acoustic sensing (DAS) system for quasi-coherent detection of at least one multi-frequency signal over an optical fiber, including a multi-frequency pulse generator, a circulator, a coherent detector and a processor, the pulse generator for generating at least one multi-frequency pulse train including at least two pulses each having a different frequency, the pulse train including a plurality of carriers, the coherent detector for receiving at least one backscattered signal from the optical fiber and the processor for quasi-coherent aggregation of the carriers in the backscattered signal, wherein the processor channelizes the backscattered signal into at least one complex signal for each frequency in the carriers and wherein for each complex signal, the processor respectively extracts at least one of an amplitude change and a phase change for each one of the carriers and selectively aggregates at least one of the changes for the carriers for determining if an event has occurred over the optical fi

Abstract: Devices, systems, and methods are provided for rapid laser recharging. A pulse emitting device may include an emitter to emit pulses, a first capacitor to provide pulses to the emitter, a second capacitor to charge the first capacitor, a first gate and a second gate to control the flow of current to the capacitors and the emitter, and a power supply configured to supply energy associated with the pulses. When the first gate is open, the first capacitor charges a first pulse of the pulses. When the first gate closes, the emitter emits the first pulse. When the first gate opens, the second gate closes and the second capacitor charges the first capacitor with a second pulse of the pulses. When the second gate opens after the second capacitor charges the first capacitor with the second pulse, the first gate closes and the emitter emits the second pulse.

Abstract: A method for measuring an element concentration of a material includes: a material sample is irradiated with first electromagnetic waves; second electromagnetic waves radiated by the material sample are obtained under the action of the first electromagnetic waves; material property parameters of the material sample are determined by detecting the second electromagnetic waves; and an element concentration of the material sample is determined according to the material property parameters.

Abstract: A optical measurement apparatus includes: an optical system which generates a pupil image of a measurement target, using light; a polarization generator which generates a polarized light from the light; a self-interference generator which generates a plurality of beams divided from the pupil image, using the polarized light, and causes the plurality of beams to interfere with each other to generate a self-interference image; and an image analysis unit configured to extract phase data from the self-interference image, and to move the measurement target to a focus position on the basis of the phase data.

Abstract: To perform alignment of a protective tape having a protective layer with high accuracy, provided is an alignment device (5) to be used for applying a protective tape (PT) to a semiconductor wafer (W), including: a tape holding body (30) configured to hold the protective tape (PT) laminated with a protective layer (PL) having an outer diameter smaller than an outer diameter of the protective tape (PT), and one image pickup means (50) for imaging a plurality of parts of an outer peripheral edge portion of the protective layer (PL), wherein the alignment device is configured to determine a center position of the protective layer (PL) based on positional information on each of the plurality of parts of the outer peripheral edge portion of the protective layer (PL) through determination of the positional information on the each of the plurality of parts based on image data acquired by imaging of the image pickup means (50).