Jasco Corporation

Koshi Nagamori

Yoshiro Kondo

Kenichi Akao

Satoko Suzuki

Toshiyuki Nagoshi

Hisashi Masago

Taiji Oyama

Kohei Tamura

Miyuki Kanno

Yasuo Horiguchi

Based on an HT voltage value of each data point applied to a light detector and a plurality of reference spectra measured, in measurement of a reference substance performed for a plurality of times, a weighting function deriver of a spectrum measuring device derives a relation between the HT voltage value (HTi) and a degree of dispersion σi of a plurality of spectral values as a weighting function (σ=f(HT)). Moreover, a numerical evaluator of the spectrum measuring device is configured to calculate a degree of individual coincidence between a sample spectrum and the reference spectrum, acquire the degree of dispersion σi by applying the HT voltage value at measuring the sample spectrum to the weighting function as a weighting value, and evaluate the difference between the reference spectrum and the sample spectrum based on the degree of individual coincidence to which the weighting value is applied.

Spectrum measuring device suitable for evaluating difference between spectra

The present invention relates to an improvement in spectral analysis in spectrometry, particularly in a technique of spectral analysis by spectral classification at high speed. A spectral analysis devicecomprises: a measurement unitthat measures a sample spectrum of a target sample; and an analysis unitthat analyses the sample spectrum, and analyses a compound contained in the target sample, wherein

Real-time spectral analysis through high-speed spectral classification

The present invention relates to improvement in accuracy in a device and a method for determining whether a spectrum of a target sample coincide with a standard spectrum or not. A spectrum determination devicedetermines whether a sample spectrum coincides with a reference spectrum or not by the reference spectrum obtained from a spectrum group. The spectrum determination devicecomprises a storage unitfor storing the reference spectrum, and a determination unitfor comparing the reference spectrum and the sample spectrum to determine a samplefrom the comparison result. The reference spectrum is set with a differing weighting for each point. The determination unitcalculates an individual coincidence with the sample spectrum for each point of the reference spectrum, and calculates a coincidence of the sample spectrum with the reference spectrum by the individual coincidence and the differing weighting to determine the sample

Device and method for spectrum determination

Growing community of inventors

Tokyo, Japan

Koshi Nagamori