Abstract: The present disclosure relates to an apparatus for non-invasively estimating a target component value based on a light spectrum. The apparatus for estimating the target component value may include a sensor configured to obtain a spectrum of light scattered or reflected from an object, and a processor configured to correct a first reflectance value of the spectrum based on a melanin index; obtain a second reflectance value based on correcting the first reflectance value; convert the second reflectance value into an absorbance value; estimate the target component value based on the absorbance value; and correct the target component value based on a hemoglobin index.

Abstract: An inspection device includes: an illumination device that irradiates an object with near infrared light; a spectroscope that disperses reflected light from the object irradiated with the near infrared light; an imaging device that takes a spectroscopic image of the reflected light dispersed by the spectroscope; and a processor. The processor: obtains spectral data at a plurality of points on the object based on the spectroscopic image obtained by the imaging device; selects, as typical spectral data representing the object from among the spectral data at the plurality of points, one of: spectral data in which a luminance value in a predetermined wavelength is a median value; and spectral data in which a summation of luminance values in a predetermined wavelength range is a median value; and performs a predetermined analysis for the object based on the typical spectral data and detects a different type of object.

Abstract: A measurement system is provided with an array of laser diodes to generate light having one or more optical wavelengths. A detection system is provided with at least one photo-detector, a lens and a spectral filter at an input to the at least one photo-detector. The measurement system is further configured to transmit at least a portion of the output signal, indicative of an output status, to a cloud service over a transmission link. The cloud service is configured to receive the output status, to generate processed data based on the received output status, and to store the processed data, and wherein the cloud service is capable of storing a history of at least a portion of the received output status over a specified period of time.

Abstract: An inspection flow path device according to the present disclosure comprises: a first flow path device having a plate-like shape and including a pair of first surfaces located opposite to each other in a thickness direction and a first flow path located inside and including a first opening located in the pair of first surfaces and a branch flow path; and a second flow path device having a plate-like shape and translucency and including a pair of second surfaces located opposite to each other in a thickness direction and a second flow path located inside and including a second opening located in the pair of second surfaces; wherein one of the pair of first surfaces of the first flow path device is located on one of the pair of second surfaces of the second flow path device, and the first opening and the second opening are connected to each other.

Abstract: A fiber-optic salinity and temperature measurement includes a first Fabry-Perot interferometer and a second Fabry-Perot interferometer. Each of the Fabry-Perot interferometers includes a first optical fiber fusion spliced to a second optical fiber such that a relatively large cavity is formed between the fibers. The relatively large cavity forms the measurement chamber for each Fabry-Perot interferometer. The input port on each of the Fabry-Perot interferometers is coupled to an optical splitter such that a single optical signal input is provided to each Fabry-Perot interferometer. The output port on each of the Fabry-Perot interferometers is coupled to an optical combiner that combines the interference signal received from each of the Fabry-Perot interferometers. An optical signal analyzer coupled to an output port of the optical combiner determines the salinity and temperature of a sample material in the large cavity of the second Fabry-Perot interferometer.

Abstract: An attachment device comprising a cover, with first and second windows, is affixed to a backing, with third and fourth windows, thereby forming a casing. The first and third windows form a first optical path with light entering the third window passing through the first window. The second and fourth windows form a second optical path with light entering the second window passing through the fourth window. A filter housing with a plurality of filters is driven by a motor so that the filters intercept the first optical path in accordance with an imaging regimen electronically stored in the casing interior. The imaging regimen communicates instructions, via a communications interface of the attachment device, to an imager and light source of an external device, to which the attachment device is attached, thereby controlling these components in accordance with the regimen.

Abstract: A seamless fumed silica monolithic integrating cavity device tailored to analyzing a flowed sample. The device is configured to facilitate optical measurements taken from a sample flowed through a cavity of the device. The cavity is defined by a fumed silica monolith with the added feature of a fused quartz lining on the surface of the monolith. This provides an intermediate surface that allows for cleaning and reuse of the highly effective diffuse light scattering fumed silica monolith. The lining may be placed under pressure or vacuum to structurally enhance mechanical integrity of the underlying monolith. Thus, continued or reliably repeated use of the device may be appreciated as well as use in more industrial environments that are prone to vibration. Additionally, while well suited for flow-based sample analysis, a valve of the cavity may be utilized for holding a sample in a temporarily static state for measurement.

Abstract: An optical milk measuring arrangement operative during a milking operation, and including an optical measuring device for measuring optical properties of milk in a measuring region, in which at least part of the milk fed to the measuring arrangement collects. The measuring arrangement includes a main channel and a measuring channel, and these channels are in fluid communication with one another in a region of a common inlet and a common outlet, and the measuring channel has a lower flow velocity than a flow velocity in the main channel.

Abstract: In an illustrative configuration, a method for monitoring air quality is disclosed. The method includes accepting analyte gas into a cell and reflecting light rays into the analyte gas repeatedly across the cell into at least one sensor. The light scattered by particulate matter in the analyte gas and amount of spectra-absorption due to presence of a gaseous chemical is then measured. Based on the determined amount of spectra-absorption and the measured scattered light the gaseous chemical is then measured.

Abstract: A light radiating device includes an optical element held at a desired position by a holder and configured to exhibit desired optical performance based on incoming light entered at the desired position, a detector configured to detect an amount of positional deviation of the optical element relative to the desired position, and a discrimination unit configured to discriminate whether the light radiating device is in a normal state or an abnormal state based on the detected amount of positional deviation. The normal state is a state where the optical element exhibits the desired optical performance by being disposed at the desired position. The abnormal state is a state where the optical element is disposed at a position deviating from the desired position.

Abstract: The invention relates to an in vitro method for evaluating digestive efficiency (DE) of poultry, in particular chickens, by measuring color of a sample of liquid fraction of blood of said poultry.

Abstract: A blood sample collector can be used to collect a blood sample from a subject. The blood sample collector can be placed in a receptacle of a spectrometer to measure spectral data from the blood sample while the blood sample separates. The container may comprise a window to allow light such as infrared light to pass through the container, with the blood sample at least partially separating within the container between spectral measurements, which can provide improved accuracy of the measurements and additional information regarding the sample. The container may comprise an elongate axis and the container configured for placement in the spectrometer receptacle with the elongate axis extending toward a vertical direction in order to improve gravimetric separation of the blood sample. The spectrometer can be configured to measure the blood sample at a plurality of heights along the sample as the sample separates.

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: 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).