JP2013160772A5 - Optical spectrum conversion method and optical spectrum converter - Google Patents

Optical spectrum conversion method and optical spectrum converter Download PDF

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JP2013160772A5
JP2013160772A5 JP2013065927A JP2013065927A JP2013160772A5 JP 2013160772 A5 JP2013160772 A5 JP 2013160772A5 JP 2013065927 A JP2013065927 A JP 2013065927A JP 2013065927 A JP2013065927 A JP 2013065927A JP 2013160772 A5 JP2013160772 A5 JP 2013160772A5
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spectrum
measurement
measurement spectrum
spectral characteristic
optical
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光学フィルターを用いて第２個数の所定の波長である計測波長の光強度を検出することによって得られた前記第２個数の光強度を有する計測スペクトルを、第１個数の所定の波長での光強度を表すスペクトルに変換する光スペクトル変換方法であって、
前記検出に用いられた光学フィルターの分光特性である計測分光特性と、基準として定められた光学フィルターである基準光学フィルターについての分光特性である基準分光特性と、を用いて、前記計測スペクトルを、前記基準光学フィルターを用いて測定される計測スペクトルである基準計測スペクトルに変換する計測スペクトル変換工程と、
前記基準計測スペクトルを前記スペクトルに変換するための変換行列を前記基準計測スペクトルに作用させることによって、前記基準計測スペクトルを前記スペクトルに変換する基準計測スペクトル変換工程と、
を備えることを特徴とする光スペクトル変換方法。 A measurement spectrum having the second number of light intensities obtained by detecting the light intensity of the second number of predetermined wavelengths using an optical filter is obtained as light at the first number of predetermined wavelengths. An optical spectrum conversion method for converting into a spectrum representing intensity,
Using the measurement spectral characteristic that is the spectral characteristic of the optical filter used for the detection and the reference spectral characteristic that is the spectral characteristic of the reference optical filter that is the optical filter that is defined as a reference, the measurement spectrum, A measurement spectrum conversion step of converting into a reference measurement spectrum which is a measurement spectrum measured using the reference optical filter;
A reference measurement spectrum converting step of converting the reference measurement spectrum into the spectrum by acting on the reference measurement spectrum with a conversion matrix for converting the reference measurement spectrum into the spectrum;
An optical spectrum conversion method comprising: 請求項１に記載の光スペクトル変換方法であって、
前記基準計測スペクトル変換工程は、
前記スペクトルが既知の光である既知光についての前記基準計測スペクトルである既知光計測スペクトルに前記変換行列を作用させて得られた前記スペクトルである推定スペクトルと、前記既知光についての前記スペクトルである既知光スペクトルとの偏差が極値となる条件に基づいて決定された変換行列を前記基準計測スペクトルに作用させる工程、
を備えることを特徴とする光スペクトル変換方法。 The optical spectrum conversion method according to claim 1,
The reference measurement spectrum conversion step includes
The estimated spectrum, which is the spectrum obtained by applying the conversion matrix to the known light measurement spectrum, which is the reference measurement spectrum for the known light, and the spectrum for the known light. Applying a transformation matrix determined on the basis of a condition that a deviation from the known light spectrum is an extreme value to the reference measurement spectrum;
An optical spectrum conversion method comprising: 請求項１または２に記載の光スペクトル変換方法であって、
前記計測スペクトル変換工程は、
前記計測分光特性に校正行列を作用させて得られた校正分光特性と、前記基準分光特性との偏差が極値となる条件に基づいて決定された前記校正行列を前記計測スペクトルに作用させることによって前記基準計測スペクトルに変換する工程、
を備えることを特徴とする分光計測方法。 The optical spectrum conversion method according to claim 1 or 2,
The measurement spectrum conversion step includes
By applying the calibration matrix determined based on the condition that the deviation between the calibration spectral characteristic obtained by applying the calibration matrix to the measurement spectral characteristic and the reference spectral characteristic is an extreme value on the measurement spectrum Converting to the reference measurement spectrum,
A spectroscopic measurement method comprising: 請求項２に記載の分光計測方法であって、
前記基準計測スペクトル変換工程は、
前記変換行列を前記既知光スペクトルに主成分分析を行って選択された前記第１個数よりも少ない第３個数の主成分ベクトルによって構成される線形空間に線形射影することによって、修正された前記変換行列を前記基準計測スペクトルに作用させる工程、
を備えることを特徴とする光スペクトル変換方法。 The spectroscopic measurement method according to claim 2,
The reference measurement spectrum conversion step includes
The transformation transformed by linearly projecting the transformation matrix into a linear space composed of a third number of principal component vectors less than the first number selected by performing principal component analysis on the known light spectrum Applying a matrix to the reference measurement spectrum;
An optical spectrum conversion method comprising: 光学フィルターを用いて第２個数の所定の波長である計測波長の光強度を検出することによって得られた前記第２個数の光強度を有する計測スペクトルを、第１個数の所定の波長での光強度を表すスペクトルに変換する光スペクトル変換装置であって、
前記検出に用いられた光学フィルターの分光特性である計測分光特性と、基準として定められた光学フィルターである基準光学フィルターについての分光特性である基準分光特性と、を用いて、前記計測スペクトルを、前記基準光学フィルターを用いて測定される計測スペクトルである基準計測スペクトルに変換する計測スペクトル変換部と、
前記基準計測スペクトルを前記スペクトルに変換するための変換行列を前記基準計測スペクトルに作用させることによって、前記基準計測スペクトルを前記スペクトルに変換する基準計測スペクトル変換部と、
を備えることを特徴とする光スペクトル変換装置。 A measurement spectrum having the second number of light intensities obtained by detecting the light intensity of the second number of predetermined wavelengths using an optical filter is obtained as light at the first number of predetermined wavelengths. An optical spectrum conversion device for converting into a spectrum representing intensity,
Using the measurement spectral characteristic that is the spectral characteristic of the optical filter used for the detection and the reference spectral characteristic that is the spectral characteristic of the reference optical filter that is the optical filter that is defined as a reference, the measurement spectrum, A measurement spectrum conversion unit for converting to a reference measurement spectrum which is a measurement spectrum measured using the reference optical filter;
A reference measurement spectrum conversion unit that converts the reference measurement spectrum into the spectrum by acting on the reference measurement spectrum with a conversion matrix for converting the reference measurement spectrum into the spectrum;
An optical spectrum conversion device comprising:
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US10429240B2 (en) * 2016-07-29 2019-10-01 Viavi Solutions Inc. Transfer of a calibration model using a sparse transfer set
CN110440692B (en) * 2019-08-27 2020-10-20 大连理工大学 Combined measurement and calibration method of laser tracker and structured light 3D scanner

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