JP6966028B1 - 成分測定装置および成分測定方法 - Google Patents
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Abstract
Description
図1は、実施の形態1の成分測定装置100の構成を表す図である。実施の形態1に係る成分測定装置100は、励起光源1、プローブ光源2、光学媒質部3、光位置検出器4、光学チョッパー9、ロックインアンプ10、角質層情報取得部11、および演算部20を備える。
・・・式(1)
図4は、実施の形態2に係る成分測定装置101の構成を表す図である。実施の形態2に係る成分測定装置101は、実施の形態1に係る成分測定装置100と比較し、光学チョッパー9を備えていない。光学チョッパー9の代わりに、実施の形態2に係る成分測定装置101は、励起光源1の電源に変調を行う変調器22を備える。変調器22が励起光源1へ周期的に変調された信号を給電することによって、実施の形態2に係る成分測定装置101は、励起光6の強度変調を実行する。つまり変調器22は、本発明に係る強度変調部の一例に対応する。
Claims (7)
- サンプルに含まれる対象成分を測定する成分測定装置において、
前記サンプルが静置される光学媒質部と、
前記光学媒質部に励起光を出射する励起光源と、
前記光学媒質部にプローブ光を出射するプローブ光源と、
前記サンプルの角質層に関する角質層情報に基づいて、前記励起光源が出射する前記励起光に強度変調を施して強度変調励起光を生成し、生成した前記強度変調励起光を前記光学媒質部に出射する強度変調部と、
前記励起光が出射された第1状態の前記光学媒質部から出射される前記プローブ光と前記強度変調励起光が出射された第2状態の前記光学媒質部から出射される前記プローブ光との相違に基づき前記対象成分を測定する測定部と
を備えることを特徴とする成分測定装置。 - 前記サンプルの角質層に関する角質層情報を取得する角質層情報取得部を更に備え、
前記強度変調部は、前記角質層情報取得部が取得した前記角質層情報に基づいて前記強度変調を施す要構成してある
ことを特徴とする請求項1に記載の成分測定装置。 - 前記強度変調励起光の変調周波数をf、前記角質層情報取得部が取得した前記角質層情報が示す前記角質層の厚さをd、前記サンプルの熱拡散係数をαとした場合、前記強度変調部は、f<α/(d2 π)を満たすよう前記強度変調を施す
ことを特徴とする請求項2に記載の成分測定装置。 - 前記強度変調部は更に、α/{(3d)2 π}<fを満たすよう前記強度変調を施す
ことを特徴とする請求項3に記載の成分測定装置。 - 前記強度変調部は、所定の回転速度で回転する回転ブレードを備え、
前記強度変調部は、前記励起光源と前記光学媒質部との間に配置してあり、
前記励起光源は、前記回転ブレードを介して前記光学媒質部へ前記励起光を出射するよう構成してあり、
前記強度変調部は、前記角質層情報取得部が取得した前記角質層情報に基づいて、前記回転ブレードの前記回転速度を変化させる
ことを特徴とする請求項2〜4のいずれか1項に記載の成分測定装置。 - 前記強度変調部は、前記励起光源の電源に変調を行う変調器を備え、
前記強度変調部は、前記角質層情報取得部が取得した前記角質層情報に基づいて、前記変調器による前記変調を変化させる
ことを特徴とする請求項2〜4のいずれか1項に記載の成分測定装置。 - サンプルに含まれる対象成分を測定する成分測定方法において、
前記サンプルを光学媒質部に静置する静置ステップと、
前記光学媒質部に励起光を励起光源から出射する励起光出射ステップと、
前記光学媒質部にプローブ光をプローブ光源から出射するプローブ光出射ステップと、
前記サンプルの角質層に関する角質層情報を取得する角質層情報取得ステップと、
前記角質層情報取得ステップで取得した前記角質層情報に基づいて前記励起光源が出射する前記励起光に強度変調を施して強度変調励起光を生成し、生成した前記強度変調励起光を前記光学媒質部に出射する強度変調ステップと、
前記励起光が出射された第1状態の前記光学媒質部から出射される前記プローブ光と前記強度変調励起光が出射された第2状態の前記光学媒質部から出射される前記プローブ光との相違に基づき前記対象成分を測定する測定ステップと
を備えることを特徴とする成分測定方法。
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JP7422956B1 (ja) | 2023-05-31 | 2024-01-26 | 三菱電機株式会社 | 非侵襲成分分析装置 |
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