PROBLEM TO BE SOLVED: To provide a method and an apparatus for easy and precise measurement of organism information from a desired part in skin tissue.SOLUTION: When a superficial tissue surface is irradiated with light to receive reflected light from the superficial tissue and obtain organism information by spectrometric analysis of received light, linearly polarized light is used as the light for irradiating the superficial tissue surface of the organism, light receiving of the reflected light is carried out via a polarizing angle variable polarizing plate to obtain spectral distribution, the ultimate depth of the light to the superficial tissue is analyzed based on spectral distribution of different polarizing angle, and a polarizing angle of the polarizing plate is set according to the analysis result to receive the light for spectral analysis. Organism information is measured by spectral analysis in a condition that the polarizing plate is set at a polarizing angle capable of obtaining reflected light from suitable depth.COPYRIGHT: (C)2008,JPO&INPIT【課題】簡便に且つ的確に皮膚組織中の求める部分からの生体情報測定を行う。【解決手段】生体の表層組織表面に光を照射して表層組織からの反射光を受光し、受光した光の分光分析によって生体情報を得るにあたり、生体の表層組織表面に照射する光として直線偏光の光を用い、偏光角可変とした偏光板を介して上記反射光の受光を行ってスペクトル分布を求めて、該偏光角が異なるスペクトル分布に基づいて上記表層組織への上記光の到達深度を解析し、この解析結果に応じて上記偏光板の偏光角を設定して分光分析のための光を受光する。適切な深度からの反射光を得られる偏光角に偏光板をセットした状態で分光分析して生体情報を測定する。【選択図】図1
