13 results about "Ftir spectra" patented technology

The invention belongs to the field of chemometric model generation for spectrometers. The invention relates to a computer-implemented method for generating a chemometric model for a spectrometer, the method comprising: a) receiving spectra of objects and object data associated with physical or chemical properties of the objects, b) augmenting the provided spectra and associated object data, c) generating at least two different candidate chemometric models, comprising d) training the candidate chemometric models using the augmented spectra and object data, e) determining a prediction accuracy of the trained candidate chemometric models, f) using the prediction accuracy to select a chemometric model among the trained candidate chemometric models, and g) outputting the selected chemometric model.

A spectroscopy system including a base station having a reflecting telescope and a laser light source coupled to the telescope, the laser providing an outgoing light signal; at least one Unmanned Aerial Vehicle containing a mobile retroreflector configured to receive the light signal from the laser and return a light signal back to the telescope; a detector to record the intensity of the returning light signal; and optical components for spectroscopic measurements, the optical components utilizing the intensity of the returning light signal, revealing the presence of a chosen narrow band for the purpose of detecting a target.

The present invention relates to a device for spectroscopic measurements, in particular X-ray diffraction (XRD), tem- perature-resolved second harmonic generation (TR-SHG) or infrared (IR) measurements, which prevents the formation of condensation (dew) or ice (frost) when carrying out spectroscopic measurements in sub-ambient temperature conditions and to a method of spectro- scopic measurements with said device.

Abstract Apparatus and methods are presented for spectral domain optical imaging, in particular for single shot 3-D spectral domain imaging of the retina of the human eye. In certain embodiments one or more 3-D images across elongated areas of an object are acquired, with scanning perpendicular to the long axis of the elongated areas for imaging extended volumes of 5 the object. In preferred embodiments the captured light is sampled in the Fourier plane, in a dimension substantially perpendicular to the long axis, with a cylindrical lenslet array, while in other embodiments the captured light is sampled in the image plane. Apparatus and methods are also presented for hyperspectral imaging of the retina, with the illuminating beams preferably angled to suppress interference from corneal reflections. Apparatus and methods are 10 also presented for multi-wavelength wavefront sensing, with simultaneous capture of light in two or more paths with different delays. 5 1020 26 20 47 51 19 J un 2 02 6 A b s t r a c t 1 9 J u n 2 0 2 6 5 2 0 2 6 2 0 4 7 5 1 1 0

A monolithic LED IC die can include multiple emission regions independently operable by applying independent electrical input signals, such as to independently control light output from different individual ones of the multiple emission regions. Optics can include different spectral filters applied to the different light outputs from the different individual ones of the multiple emission regions, such as to define different spectral bands output by the different spectral filters. These different spectral bands can be differently encoded, and the encoded light can be used for enhanced spectroscopy. Additionally or alternatively, the different individual ones of the multiple emission regions can be selectively energized, such as to provide a tunable light source via the different spectral bands output by the optics. The monolithic LED IC die with the multiple emission regions can make the optics more compact, such as for a wearable or other compact device for spectroscopic measurement or analysis.

This invention discloses a purification method for isopropanol, a reagent for spectroscopic analysis. The method includes: S1 mixing industrial-grade isopropanol with an alkali metal compound, adjusting the pH to 7.0–8.0, and obtaining a neutralized filtrate through solid-liquid separation; S2 continuously adsorbing and removing impurities from the neutralized filtrate by passing it sequentially through a molecular sieve adsorption unit, a modified activated carbon adsorption unit, and a γ-alumina adsorption unit; S3 subjecting the adsorbed liquid to staged total reflux distillation, controlling the reflux ratio at 5–15:1 and the total reflux time at 1–3 hours, and collecting the top product; S4 filling and sealing the top product under inert gas protection. This invention achieves closed-loop control of the entire process by setting online conductivity and moisture sensors, infrared detection devices, and online concentration sensors at key nodes. This method has the advantages of high purity, low energy consumption, high recovery rate, and process controllability, and is suitable for the industrial production of high-purity isopropanol for spectroscopic analysis.

1. Name of the product in this design: Spectrometer. 2. Purpose of this design: For spectral detection. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

Systems or techniques are provided for spectral analysis. In various embodiments, a system can comprise a memory that stores computer executable instructions and a processor that executes the computer executable instructions. The computer executable instructions can comprise a compression component that compresses the one or more unknown spectra, using an encoder, into one or more compressed unknown spectra in a latent space; and a search component that matches the one or more compressed unknown spectra with one or more compressed known spectra to obtain one or more candidate matches of the sample.

The present invention relates to a measuring device (110) for a spectrometer apparatus (112), wherein the measuring device (110) comprises: (1) at least one object holder (114); wherein the object holder (114) is configured to receive an object (118); (2) at least one mounting unit (116); wherein the mounting unit (116) is configured to accommodate the spectrometer apparatus (112); wherein the measuring device (110) is configured to align at least one measurement position (120, 121) on the object (118) with respect to a measurement spot (124) of the spectrometer apparatus (112) to obtain at least one spectral information item at the measurement position (120, 121).

Systems or techniques for spectral analysis are provided. In various embodiments, a system can include a memory that stores computer-executable instructions and a processor that executes the computer-executable instructions. The computer-executable instructions can include a compression component that compresses one or more unknown spectra into one or more compressed unknown spectra in a latent space using an encoder; and a search component that matches the one or more compressed unknown spectra against one or more compressed known spectra to obtain one or more candidate matches for the sample.

This invention proposes a method for constructing disease screening models, a method for predicting diseases, and a device based on multimodal spectral contrastive learning, solving the problems of poor generalization performance and imbalanced screening indicators in existing models based on small sample spectral data. The invention includes: acquiring and preprocessing blood ATR-FTIR spectra; performing physically consistent sample augmentation on the training set; converting one-dimensional spectra into multi-view two-dimensional images using Gram angle fields and Markov transition fields, and fusing them into single-channel feature maps using PCA; constructing a Siamese network based on Vision Transformer; extracting features based on a frozen pre-trained encoder, training an extreme gradient boosting classifier (XGBoost), and searching for thresholds for prediction. This invention can overcome the overfitting problem of small sample spectral data, improve the sensitivity and specificity of early neurodegenerative disease screening, and can be applied to the intelligent and rapid classification and detection of mental and neurodegenerative diseases such as adolescent depression and Alzheimer's disease.

Embodiments of the present invention are directed to a sample compartment sub-assembly for a spectrometer. The sub-assembly includes a sample support adapted to support one or more sample holders for use in the sample compartment. The sample support is associated with one or more magnets. The sub-assembly further includes a sensor assembly configured to detect the one or more magnets associated with the sample support so as to identify a mode of operating the spectrometer corresponding to the sample support.