The apparatus (1) for agricultural crop analysis, comprises: a light source (2) for sending light radiation towards a crop; a plurality of sensors (21) for acquiring light radiation reflected by the crop and a plurality of filtering elements (22) adapted to enable complete passage only of light having frequencies within a predetermined passband. The filtering elements (22) have passbands that differ from each other and each filtering element (22) is functionally coupled with a respective sensor (21) in such a manner that the latter receives only light radiation that has traversed the former.

A water quality analysis system is calibrated without using any organic fluorescence material such as phenanthrene. The water quality analysis system analyzes a component to be measured contained in a liquid sample by a fluorescence spectroscopy, and that comprises a light irradiation section that irradiates the liquid sample with a light having an excitation wavelength of the component to be measured, a light detection section that detects a fluorescence of the component to be measured emitted from the liquid sample, a calculation unit that calculates a concentration of the component to be measured by using a fluorescence intensity obtained by the light detection section, and a solid fluorescence reference member that is arranged on an optical path between the light irradiation section and the light detection section and that emits the fluorescence by the light from the light irradiation section at a time of calibration.

According to one embodiment, a gas analysis device includes: a base including a concave portion; a window includes a first film and a second film; an optical part that is located at a side of the window opposite to the base side and includes a light projector and a light receiver; and an optical path length controller that is located between the base and the window and has a controllable thickness. The concave portion includes a first sidewall that is oblique to a surface of the base, and a second sidewall that is oblique to the surface of the base. An oblique direction of the second sidewall is opposite to an oblique direction of the first sidewall. The light projector is configured to irradiate light toward the first sidewall. The light receiver is configured to convert light reflected by the second sidewall.

By way of overview and introduction, various embodiments of the apparatus, systems and methods described herein are directed improved approaches to aligning and standardizing different total spectral radiance factor shapes measured with different instruments. Furthermore, in one or more configurations and approaches, the disclosure presented herein is directed to obtaining a whiteness calibration value for use in sample measurements without the need of UV filter adjustments.

A hand-held microfluidic testing device is provided that includes a housing having a cartridge receiving port, a cartridge for input to the cartridge receiving port having a sample input and a channel, where the channel includes a mixture of Raman-scattering nanoparticles and a calibration solution, where the calibration solution includes chemical compounds capable of interacting with a sample under test input to the cartridge and the Raman-scattering nanoparticles, and an optical detection system in the housing, where the optical detection system is capable of providing an illuminated electric field, where the illuminating electric field is capable of being used for Raman spectroscopy with the Raman-scattering nanoparticles and the calibration solution to analyze the sample under test input to the cartridge.

Method for calibrating or monitoring performance of an optical measurement device that includes using a robotic arm to move a reference device having an optical reference material into a signal-detecting position of the optical measurement device. With the optical measurement device, detecting an emission emitted by the optical reference material of the reference device in the signal-detecting position. Then generating a reference signal representing a characteristic of the emission detected by the optical measurement device and comparing the reference signal to an expected reference signal for the emission to calibrate or monitor the performance of the optical measurement device.

The invention relates to an optical measurement device for a reaction vessel, and a method therefor. An object is to measure the optical state within a reaction vessel in an efficient, rapid, and highly reliable manner, without an expansion of the device scale. The configuration includes: a vessel group in which two or more reaction vessels are arranged; a light guide stage having two or more linking portions to which front ends of light guide portions, which have a flexibility, that optically connect with the interior of the linked reaction vessels, are provided; a connecting end arranging body that has an arranging surface that arranges and supports along a predetermined path two or more connecting ends, to which back ends of the light guide portions, in which the front ends thereof are provided to the linking portions, are provided, the connecting ends are provided corresponding to the respective linking portions; a measurement device provided approaching or making contact with the arranging surface that has measuring ends that are successively optically connectable with the respective connecting ends along the predetermined path, and in which light from within the reaction vessels is receivable by means of optical connections between the connecting ends and the measuring ends; and a light guide switching mechanism that relatively moves the respective connecting ends arranged on the connecting end arranging body and the respective measuring ends such that they are successively optically connected.

A measurement system includes a light source configured to emitting a source light, a detection platform configured to support a reference sample and a test sample; a light guiding element on an optical path of the source light; and a detector. The detection platform is configured to synchronously move the reference sample and the test sample on a same surface of the detection platform. The light guiding element is configured to divide the source light into a measurement light and a reference light and guide the measurement light to the test sample, and the reference light to the reference sample. The measurement light reflected by the test sample and the reference light reflected by the reference sample are combined as an interference light. The detector is configured to receive the interference light and obtain optical information of the test sample according to the interference light.

A spectrum analysis apparatus is an apparatus for analyzing an analysis object on the basis of a spectrum of light generated in the analysis object containing any one or two or more of a plurality of reference objects, and includes an array conversion unit, a processing unit, a learning unit, and an analysis unit. The array conversion unit generates two-dimensional array data on the basis of a spectrum of light generated in the reference object or the analysis object. The processing unit includes a deep neural network. The analysis unit causes the array conversion unit to generate the two-dimensional array data on the basis of the spectrum of light generated in the analysis object, inputs the two-dimensional array data to the deep neural network, and analyzes the analysis object on the basis of data output from the deep neural network.

Optical reference devices for calibrating or monitoring the performance of an optical measurement device, such as a fluorometer, are made from thermoplastics from the polyaryletherketone (PAEK) family of semi-crystalline thermoplastics, including polyether ether ketone (PEEK). The reference device may be made as a master reference device having a known emission output—as determined by a standard optical measurement device—that is used to calibrate other optical measurement devices against the standard. The reference device may be made in the shape of a receptacle vial so that the reference device can be placed in the receptacle holding structure of an instrument in which the optical measurement device is installed and used to calibrate or monitor the optical measurement device within the instrument. The reference device may be part of the probe of a pipettor or pick and place mechanism or it may be a cap that can be secured to the end of such a probe.