JP2013160555A5

JP2013160555A5 -

Info

Publication number: JP2013160555A5
Application number: JP2012020756A
Authority: JP
Filing date: 2012-02-02
Publication date: 2015-03-12
Anticipated expiration: 2032-02-02

Claims

A spectroscopic measurement method of receiving light and measuring a spectrum representing light intensity at a first number of predetermined wavelengths,
A spectroscopic step of allowing the received light to pass through an optical filter capable of changing the wavelength of the light passing therethrough to split the received light into a second number of light having a predetermined measurement wavelength;
A measurement spectrum measuring step of measuring a measurement spectrum having the second number of light intensities by detecting light intensity at the second number of the measurement wavelengths;
Spectral characteristic measurement step for measuring measurement spectral characteristics that are spectral characteristics of the optical filter used for the spectroscopy;
A reference spectral characteristic storage step of storing a reference spectral characteristic that is a spectral characteristic of a reference optical filter that is the optical filter defined as a reference;
A measurement spectrum conversion step of converting the measurement spectrum into a reference measurement spectrum that is a measurement spectrum measured using the reference optical filter, using the measurement spectral characteristic and the reference spectral characteristic;
A conversion matrix determining step for determining a conversion matrix for converting the reference measurement spectrum into the spectrum;
A reference measurement spectrum conversion step of converting the reference measurement spectrum into the spectrum by applying the conversion matrix to the reference measurement spectrum;
With
The transformation matrix determination step includes
Obtaining a known light measurement spectrum that is the reference measurement spectrum for known light, the spectrum being known light;
Obtaining a known light spectrum that is the spectrum for the known light;
Determining the conversion matrix on the basis of a condition that an estimated spectrum obtained by applying the conversion matrix to the known light measurement spectrum is an extreme value and a deviation from the known light spectrum;
A spectroscopic measurement method comprising:

The spectroscopic measurement method according to claim 1,
The measurement spectrum conversion step further includes
Determining the calibration matrix based on a condition where a deviation between the calibration spectral characteristic obtained by applying a calibration matrix to the measurement spectral characteristic and the reference spectral characteristic is an extreme value;
Converting to the reference measurement spectrum by applying a calibration matrix to the measurement spectrum;
A spectroscopic measurement method comprising:

The spectroscopic measurement method according to claim 1,
The transformation matrix determination step further includes
Performing a principal component analysis on the known light spectrum to select a third number of principal component vectors less than the first number;
Modifying the transformation matrix by linearly projecting the transformation matrix into a linear space composed of the third number of principal component vectors;
A spectroscopic measurement method comprising:

A spectroscopic instrument that outputs a spectrum representing light intensity at a first number of predetermined wavelengths upon receiving light,
An optical filter capable of changing the wavelength of light passing therethrough;
A spectroscopic unit that splits the received light into light of a measurement wavelength that is a second predetermined wavelength by passing the received light through the optical filter;
Measurement spectrum measuring means for measuring a measurement spectrum having the second number of light intensities by detecting light intensity at the second number of the measurement wavelengths;
A measurement spectrum conversion means for converting the measurement spectrum into a reference measurement spectrum measured using a reference optical filter that is the optical filter determined as a reference;
Measurement spectrum conversion means for converting the reference measurement spectrum into the spectrum by applying a predetermined conversion matrix to the reference measurement spectrum;
With
The conversion matrix is a spectrum obtained by acquiring a known light measurement spectrum that is the measurement spectrum for known light, the spectrum of which is known light, and applying the conversion matrix to the known light measurement spectrum. A matrix determined based on a condition that a deviation between a certain estimated spectrum and the known light spectrum that is the spectrum of the known light is an extreme value;
The measurement spectrum conversion means is based on a measurement spectral characteristic that is a spectral characteristic of the optical filter used for the spectrum used for measurement of the measurement spectrum, and a reference spectral characteristic that is a spectral characteristic of the reference optical filter, The spectroscopic measuring instrument, wherein the measurement spectrum is converted into the reference measurement spectrum.

The spectroscopic measuring instrument according to claim 4,
The measurement spectrum conversion means further includes:
Calibration matrix storage means for storing the calibration matrix determined based on the condition that the deviation between the calibration spectral characteristic obtained by applying the calibration matrix to the measured spectral characteristic and the reference spectral characteristic is an extreme value When,
Conversion means for converting to the reference measurement spectrum by applying a calibration matrix to the measurement spectrum;
A spectroscopic measuring instrument comprising:

The spectroscopic measuring instrument according to claim 4,
The transformation matrix is
A matrix determined based on a condition that a deviation between the estimated spectrum and the known light spectrum that is the spectrum of the known light is an extreme value,
The spectroscopic measuring instrument, which is a matrix modified by linear projection onto a linear space formed by a third principal component vector smaller than the first number of the known light spectrum.