PROBLEM TO BE SOLVED: To provide a component measuring device accurately taking in measurement data at a desired measurement position in a measurement target.SOLUTION: The component measuring device irradiates an inner tissue of the measurement target with the laser beam through a confocal optical system, and measures the components of the measurement target based on data output from a light receiving element detecting the reflected light reflected by the inner tissue of the measurement target through the confocal optical system. The light receiving element is provided so that at least a light receiving body in a center region and a light receiving body in an outer peripheral region thereof are electrically separated.COPYRIGHT: (C)2011,JPO&INPIT【課題】測定対象における所望の測定位置の測定データを的確に取り込むことができる成分測定装置を実現すること。【解決手段】共焦点光学系を介してレーザー光を測定対象の内部組織に照射し、前記測定対象の内部組織により反射された反射光を前記共焦点光学系を介して検出する受光素子から出力されるデータに基づき前記測定対象の成分の測定を行うように構成された成分測定装置において、前記受光素子は、少なくとも中心領域の受光体とその外周領域の受光体が電気的に分離するように設けられたことを特徴とするもの。【選択図】図1
