Abstract: Various optical systems equipped with diode laser light sources are discussed in the present application. One example system includes a diode laser light source for providing a beam of radiation. The diode laser has a spectral output bandwidth when driven under equilibrium conditions. The system further includes a driver circuit to apply a pulse of drive current to the diode laser. The pulse causes a variation in the output wavelength of the diode laser during the pulse such that the spectral output bandwidth is at least two times larger the spectral output bandwidth under the equilibrium conditions.

Abstract: Disclosed is a system and method for shaped incoherent light for control (SILC). More particularly, disclosed is a method for controlling the evolution of photo-responsive systems (including chemical species, biochemical species or material compounds) using a device capable of producing shaped incoherent light for such control. The disclosed device integrates a polychromatic incoherent source in an adaptive feedback control loop.

Abstract: A device (110) for illuminating a particle comprises: a light waveguide (112; 412a, 412b; 512a, 512b) arranged on a substrate (114); an output coupler (118) configured to output a light beam (150; 450a, 450b; 550a, 550b) forming a sheet-like shape having a cross-section which has an extension in a first direction being larger than a size of a particle; and a fluidic channel (116; 416; 516) arranged on the substrate (114) for guiding a flow of particles along a longitudinal direction of the fluidic channel (116; 416; 516); wherein the sheet-like shape of the light beam (150; 450a, 450b; 550a, 550b) is arranged within the fluidic channel (116; 416; 516) and the first direction of the cross-section of the light beam (150; 450a, 450b; 550a, 550b) forms an angle to the longitudinal direction of the fluidic channel (116; 416; 516).

Abstract: A compact, portable Raman spectrometer makes fast, sensitive standoff measurements at little to no risk of eye injury or igniting the materials being probed. This spectrometer uses differential Raman spectroscopy and ambient light measurements to measure point-and-shoot Raman signatures of dark or highly fluorescent materials at distances of 1 cm to 10 m or more. It scans the Raman pump beam(s) across the sample to reduce the risk of unduly heating or igniting the sample. Beam scanning also transforms the spectrometer into an instrument with a lower effective safety classification, reducing the risk of eye injury. The spectrometer's long standoff range automatic focusing make it easier to identify chemicals through clear and translucent obstacles, such as flow tubes, windows, and containers. And the spectrometer's components are light and small enough to be packaged in a handheld housing or housing suitable for a small robot to carry.

Abstract: Systems and method for analysing contaminants of a gas sample of natural gas are provided. An interrogation light beam propagates into a chamber of a multipass gas cell receiving the gas sample. The interrogation light beam has a wavelength controlled to alternately correspond to an absorption wavelength of H2S and an absorption wavelength of an additional gas contaminant. The additional gas contaminant may for example be CO2 or H2O. In some implementation, a single laser emitter may be used to generate the interrogation light beam at the H2S and CO2 wavelengths. In some implementations, two different laser emitters may be used to generate the interrogation light beam at the H2S and H2O wavelengths. A WMS detection scheme may be used.

Abstract: A method and system is described that includes obtaining a whole blood sample and obtaining a first light absorbance profile of the whole blood sample. Next, the whole blood sample is hemolyzed to generate a hemolyzed sample of blood and a second light absorbance profile of the hemolyzed sample of blood is obtained. The level of hemolysis in the whole blood sample is determined by comparing the first light absorbance profile and the second light absorbance profile.

Abstract: The present disclosure relates to methods for the detection of melanoma and non-Hodgkin's lymphoma using attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. Further disclosed are methods for treating melanoma and non-Hodgkin's lymphoma, based on differences in infrared absorbance.

Abstract: The invention relates to a bioprocess container (10) having an optical measuring device (100) for non-invasive spectroscopic measurement comprising: a container housing (12), a port housing (102), which is connected to the container housing (12) and is sealed off with respect to the interior (18) of the container housing (12); at least one radiation-emitting element (124), which is designed to transmit electromagnetic radiation through the at least one fluid contained in the container housing (12); at least one radiation-receiving element (126), which is designed to at least partly receive the radiation which was transmitted by the radiation-emitting element (124); and at least one measuring insert (122), which holds and supports the at least one radiation-emitting element (124) and/or the at least one radiation-receiving element (126).

Abstract: Disclosed is an optical flow cell (300?) comprising: a housing (910) forming; an enclosed and elongated fluid channel (920) arranged along a first axis (923); a first light guide (961) and a second light guide (962) generally concentrically arranged along a second axis (970) and on opposite side walls of the fluid channel, said first and second light guides having ends (961c,962c) removed in situ to provide a sensing gap (d).

Abstract: A liquid sample analysis method including communicating a specific flow path with an aspirator via a branch flow path, aspirating air from the aspirator, aspirating a liquid sample into the sample supply path from the aspirator so that an entire amount of the aspirated air is accommodated in the branch flow path, communicating a sample extrusion path with a sample port, communicating a sheath fluid supply path with a sheath fluid port, and isolating the branch flow path from both the sample supply path and the specific flow path, extruding the liquid sample in the sample supply path so as to inflow into the sample flow path by causing a sheath fluid to inflow into the sheath fluid flow path from the sheath fluid supply path and causing the sheath fluid to inflow into the sample supply path from the sample extrusion path.

Abstract: The invention relates to a test device (10) for analysing, more particularly for detecting, non-destructively, pressure and temperature, and preferably for detecting a gas concentration in foodstuffs (50.4) contained in packaging (50), the test device having: —a detection assembly (30) for detecting at least one parameter in a foodstuff (50.4) contained in packaging (50), the parameter being specific to a property to be examined of the foodstuff (50.4). According to the invention, the test device (10) is designed as a hand-held device.

Abstract: An illumination unit is described that includes a first light source positioned on a first axis and a second light source on a second axis that intersects and is angularly offset with respect to the first axis. The illumination unit includes a reflector having an aperture through which the first axis extends and a reflective surface angled with respect to the first axis and second axis.

Abstract: Disclosed is a connecting device for connecting a gas sensor to a gas leak detector. The gas sensor includes an elongate sensor housing. The gas leak detector includes at least one gas connector adapted to be connected to the gas sensor. A guide rail connects to the gas leak detector, engaging with the sensor housing such that the gas connectors engage with at least one complementary second gas connector. A fastening claw includes two elastic spring legs arranged at one of the sensor housing and the gas leak detector. Each of the two spring legs includes a latching boss engaging the frontal end of the gas sensor opposite the second gas connector and a spreading element having two retaining arms. Each retaining arm includes a pulling edge, an inclined insertion portion along which the latching boss grips and pivots the spring leg, and an inclined disengagement portion.

Abstract: This optical sensor includes an illuminating optical fiber, a first light receiving optical fiber, a second light receiving optical fiber, and a measuring unit. An intersection of a reflected light entering the first light receiving optical fiber and the reflected light entering the second light receiving optical fiber is located on a front end surface of a sensor head or is closer to the peripheral surface of a moving body (a rotating body) than the front end surface of the sensor head is. This can compensate for effects of thermal expansion and accurately measure a clearance.

Abstract: A spectroscopic analysis apparatus includes: a light projecting device; a light receiving device; and an output device, wherein the light receiving device includes: a separator configured to separate reflected light into s-polarized light and p-polarized light; a detector for s-polarized light configured to output an electric signal indicating an intensity of the s-polarized light; and a detector for p-polarized light configured to output an electric signal indicating an intensity of the p-polarized light; and the output device is configured to: calculate an absorbance based on a ratio between the intensities of the s-polarized light and the p-polarized light using the electric signals output from the detector for s-polarized light and the detector for p-polarized light; and calculate either or both of the composition and the composition ratio of the surface of the measurement target object using an intensity of the absorbance at any desired wavenumber.

Abstract: A device for holding and testing plant material includes a sample container including a sample fixation member for affixing thereto a plant sample such that the plant sample is held vertically in the sample container, a test and calibration reference, a spectrometer arranged to perform spectrometric analysis of the plant sample with respect to spectrometric analysis of the test and calibration reference, and a multiple-degree-of-freedom positioning device configured to cause relative movement between the sample container and the spectrometer.

Abstract: A chemical measurement device for determining the concentration of given chemical in a given fluid has at least one LED light source and at least one light detector. The given chemical has a light absorption curve with a peak, and the at least one LED light source and at least one light detector are configured to collaborate to produce two light signals having peak wavelengths between about 5 nm and 35 nm apart. The two light signal peak wavelengths are in the ultraviolet region with wavelengths beyond the light absorption curve peak. The light signal peak wavelengths, however, also are before the light absorption curve is negligible. The device also has a concentration calculator operatively coupled with the at least one light detector. The concentration calculator is configured to compare the two light signals to produce a concentration signal representing the concentration of the given chemical in the given fluid.

Abstract: The present disclosure concerns a multi-spectral image printing method. The method includes the steps of:—providing a multi-spectral image;—providing a material;—determining changes in a refractive index value of the material permitting to reproduce the multi-spectral image when the material is illuminated; and—generating the changes in refractive index value in the material.

Abstract: The invention relates to a product inspection and characterization device, including conveyance means, a two-dimensional inspection region, a radiation source generating a spot light beam for partially illuminating the surface of the product, optical means for directing the light beam provided with at least one mirror to aim the spot light beam in the inspection region, optical means for directing the reflected and/or scattered light to detection means, detection means for analyzing the light scattered and/or reflected by the product and a processing unit for characterizing the product. The radiation source emitting the light beam is therefore pointed at the product by optical means directing the light beam to the two-dimensional inspection region. Another object of the present invention relates to the method for product inspection and characterization.

Abstract: A 3D measurement method including: projecting a pattern sequence onto a moving object; capturing a first image sequence with a first camera and a second image sequence synchronously to the first image sequence with a second camera; determining corresponding image points in the two sequences; computing a trajectory of a potential object point from imaging parameters and from known movement data for each pair of image points that is to be checked for correspondence. The potential object point is imaged by both image points in case they correspond. Imaging object positions derived therefrom at each of the capture points in time into image planes respectively of the two cameras. Corresponding image points positions are determined as trajectories in the two cameras and the image points are compared with each other along predetermined image point trajectories and examined for correspondence; lastly performing 3D measurement of the moved object by triangulation.