Abstract: A system and method are disclosed for inspecting a component having a length, a width, and an axis. The system includes a fixture for holding the component, a light source disposed on one side of the component, and an optical detector disposed on the other side of the component. In the preferred embodiment, the detector has a field of view wider than the width of the component, thereby enabling the detector to image a portion of the outer edges of the component. A translation stage is operative to move the light source and detector in unison along the length of the component and a processor, in communication with the detector and the translation stage, is operative to: a) receive electrical signals representative of the outer profile imaged by the detector; b) move the translation stage incrementally along the length of the component; and c) record the outer profile imaged by the detector at each increment and form a composite profile of the component.

Abstract: A mobile scanning inspection system, comprising a vehicle body and an inspection arm including a cross arm and a vertical arm, wherein a first inspection device and a second inspection device are provided on the cross arm; the first inspection device is on the side close to the vehicle body and it emits a first laser inspection plane parallel to the side plane of the vehicle body, and the length of the longest portion of the first laser inspection plane is longer than the length of the vehicle body; the second inspection device is provided on the side close to the vertical arm and it emits a second laser inspection plane parallel to the side plane of the vehicle body and the second laser inspection plane is centered on the vertical arm, and extends a first preset distance and a second preset distance forward and backward.

Abstract: In one embodiment, a method generally comprises importing a layout identifying routing information for a plurality of differential pair traces on a printed circuit board at a skew assessment module, receiving values for a plurality of skew parameters associated with fiber weave skew, receiving variation parameters from a database comprising data collected on fiber weave variation for one or more of the skew parameters, calculating a skew estimate for the printed circuit board based on the skew parameters and the variation parameters at the skew assessment module, and determining if the skew estimate is within a specified skew allowance for the printed circuit board.

Abstract: A flow cell including a flow channel through which a sample fluid and a sheath fluid flow, a sample flow channel that introduces the sample fluid into the flow channel, and at least one sheath flow channel that introduces the sheath fluid into the flow channel. The flow channel includes a flow merging section where the sample flow channel and the sheath flow channel merge, a flattened section that is disposed downstream of the flow merging section, that is formed in line with one wall face of wall faces facing across the flow merging section, and that is shallower in depth than the flow merging section, and a tapered section that connects the flow merging section with the flattened section and that gradually decreases in depth on progression downstream.

Abstract: The present disclosure relates to a device for measuring an optical absorption property of a fluid as function of wavelength. The device comprises a broadband light source for emitting light, a plurality of integrated optical waveguides for guiding this light, and a light coupler for coupling the emitted light into the integrated optical waveguides such that the light coupled into each integrated optical waveguide has substantially the same spectral distribution. The device also comprises a microfluidic channel for containing the fluid, arranged such as to allow an interaction of the light propagating through each waveguide with the fluid in the microfluidic channel. Each integrated optical waveguide comprises an optical resonator for filtering the light guided by the waveguide according to a predetermined spectral component. The spectral component corresponding to each waveguide is substantially different from the spectral component corresponding to another of the waveguides.

Abstract: A particle-measuring apparatus (1) for determining the particle mass concentration in aerosols having different properties has an aerosol photometer (2), by means of which a photometer measured value, which is dependent on the particle mass concentration in the aerosol, can be measured, and an evaluation unit (9), into which photometer measured values measured by the aerosol photometer (2) can be input and in which the input photometer measured values can be processed in order to output corrected particle mass concentration values.

Abstract: Disclosed herein is a novel system and method for the remote characterization of visible emissions, and more particularly, to compact, optical sensors which can remotely measure the opacity of a visible emission plume from a stationary source. Assessing visible emissions is important for compliance with environmental regulations and to support the regulatory reporting needs of Federal and State inspectors. By reducing the power consumption of the laser source and the signal processing, a compact, handheld or hand portable, battery-operable opacity measurement system can be realized while allowing eye-safe operation. The system and method may also be applied to non-stationary sources.

Abstract: A method for measuring thickness variations in a first layer of a semiconductor structure includes: acquiring an image of at least one zone of the surface of the structure, processing the acquired image so as to determine a map of the thickness variations of the first layer, and comparing the intensity of each pixel of the image with a predetermined calibration curve, the calibration curve being determined for a given thickness of a second layer of the structure, and measuring the thickness of the second layer in the at least one zone, -if the measured thickness is different from the thickness of the second layer considered in the calibration curve, using a correction curve to determine a corrected map of thickness variations of the first layer.

Abstract: A method of measuring a concentration of NO2 in a gaseous mixture using a multimode laser beam that covers a tunable spectral range with a width of no more than 5 nm, wherein the multimode laser beam provides a high resolution transmittance spectrum at an absorption cross section of NO2 molecules, and a system for measuring the concentration of NO2 in the gaseous mixture. Various combinations of embodiments of the system and the method are provided.

Abstract: A flow cell analyzes a fluid sample. A flow cell body contains a reference material and includes at least one hollow chamber to contain the fluid sample. Opposing surfaces of the flow cell body each have at least one transparent portion thereof. An optical path for light traversing through the flow cell body is defined in part by the transparent portions. A switching mechanism adjusts the amount of the reference material in the optical path to effect switching of the flow cell between a reference measurement state and a fluid sample measurement state. The reference measurement state corresponds to a first light intensity measurement and the fluid sample measurement state corresponds to a second light intensity measurement.

Abstract: Methods and apparatuses to image particles are described. A plurality of illuminating light beams propagating on multiple optical paths through a particle field are generated. The plurality of illuminating light beams converge at a measurement volume. A shadow image of a particle passing through a portion of the measurement volume at a focal plane of a digital camera is imaged. Shadow images of other particles in the particle field are removed using the plurality of illuminating light beams.

Abstract: A small-size reliable gas sensor that can reduce a measurement error can be provided. The gas sensor includes a first light source; a first sensor unit and a second sensor unit disposed to receive light output from the first light source; a first substrate having a first principal surface on which the first light source and the first sensor unit are provided; and a second substrate having a first principal surface on which the second sensor unit is provided. The first sensor unit is disposed at a location where light output from the first light source and reflected on the second principal surface strikes the first principal surface of the first substrate.

Abstract: The present invention discloses a flow cell optical detection system comprising a light source, a flow cell and a light detector, wherein the light detector is arranged in a separate detector unit that is arranged to be releasably attached to a detector interface, the detector interface being in optical communication with the light source and comprises optical connectors for optically connecting the flow cell and the detector unit in the light path from the light source, and wherein the flow cell is an interchangeable unit arranged to be held in position by the detector unit when attached to the detector interface.

Abstract: A detection device including a light guide element, a sensing element, a surface plasma resonance layer and a spatial filter element is provided. The light guide element has a top surface and a bottom surface opposite to the top surface. The sensing element is disposed beside the bottom surface of the light guide element. The surface plasma resonance layer is disposed on the top surface of the light guide element and is adapted to receive biopolymers. The spatial filter element is disposed between the bottom surface of the light guide element and the sensing element. The spatial filter element has a plurality of first light channels and a plurality of second light channels. The plurality of first light channels extend in a first direction, the plurality of second light channels extend in a second direction, and the first direction and the second direction are intersected.

Abstract: A white light confocal optical measurement device capable of detecting abnormalities in a received light waveform; the optical measurement device includes: a light source; an optical system; a light receiving unit; and a processor configured to compute the distance from the optical system to the measurement object on the basis of a received light intensity of the wavelength components received in the light receiving unit. The processor compares a received light intensity of a wavelength component to a reference value for the wavelength component for a plurality of wavelength components in a waveform representing the light received, and detects an abnormality in the received light waveform when the amount of change in the received light intensity compared to the reference value therefor is greater than or equal to a predetermined threshold for any wavelength component in the plurality of wavelength components.

Abstract: An inspection apparatus includes an optical system, which has a radiation beam delivery system for delivering radiation to a target, and a radiation beam collection system for collecting radiation after scattering from the target. Both the delivery system and the collection system comprise optical components that control the characteristics of the radiation and the collected radiation. By controlling the characteristics of one or both of the radiation and collected radiation, the depth of focus of the optical system may be increased.

Abstract: The invention generally provides methods for improving the dynamic range of an absorbance detector and absorbance detectors having improved dynamic range. In an exemplary embodiment, the method includes receiving calibration data for a plurality of samples, the calibration data comprising an absorbance for a concentration of each of the samples, calculating a contribution of stray light to the calibration data, and correcting subsequent data by removing the contribution of stray light.

Abstract: A confocal inspection system can optically characterize a sample. An objective lens, which can be a single lens or a combination of separate illumination and collection lenses, can have a pupil. The objective lens can deliver incident light to the sample through an annular illumination region of the pupil, and can collect scattered light returning from the sample to form collected light. Confocal optics can be positioned to receive the collected light. A detector can be configured with the confocal optics so that the detector generates signals from light received from a specified depth at or below a surface of the sample and rejects signals from light received from depths away from the specified depth. An optical element, such as a mask, a reconfigurable panel, or the detector, can define the annular collection region to be non-overlapping with the annular illumination region in the pupil.

Abstract: Apparatus for testing bioparameter monitoring devices includes artificial organs that comprise an elongated sponge wrapped in electrically conductive hydrogel skin, inlet and outlet tubes having a reddish liquid flowing therein and a pulsatile pump configured to generate a pulsatile flow of the liquid. A valve has a variable opening. For each artificial organ: the inlet tube extends out of the sponge and connects eventually to the pulsatile pump, the inlet tube penetrating the elongated sponge so as to extend to a tip of the elongated sponge at a distal end of the inlet tube, and the outlet tube extends out of the elongated sponge and connects eventually to the pulsatile pump at a proximal end of the outlet tube, the outlet tube penetrating the sponge so as to extend to a tip of the elongated sponge at a distal end of the outlet tube.

Abstract: A sensor device for the inspection of the surface of a cylindrical hollow enclosure having at least one sensor unit set up for an optical confocal distance measurement. The at least one sensor unit has an elongated shape and exhibits an external optical system, through which a measurement device in which light can be emitted and received, is disposed transversely to a longitudinal axis of this sensor unit. The sensor device additionally comprises a movement mechanism, which is adapted to move the at least one sensor unit in one direction of motion into and out of a cylindrical hollow enclosure to be inspected.