PROBLEM TO BE SOLVED: To provide a bioinformation measurement device automatically specifying a test subject, performing comparatively long-time continuous measurement at a high signal-to-noise ratio as the need arises under a common measurement condition that a proper specific measurement portion is selected, and allowing improvement of use efficiency of laser output light.SOLUTION: This bioinformation measurement device using a confocal optical system using a laser as a light source includes a laser drive means performing AC drive such that pulse light is output from the laser, is configured to distinguish skin from a nail of a finger based on a detection signal of the confocal optical system and to indicate a skin portion from the epithelium of the nail of the finger to the first joint as the measurement portion, and identifies a vein pattern of the finger based on the detection signal of the confocal optical system to specify the test subject.COPYRIGHT: (C)2012,JPO&INPIT【課題】被験者を自動的に特定でき、適切な特定の測定部位が選択された共通の測定条件で必要に応じて比較的長時間の連続測定を高いSN比で行うことができ、レーザー出力光の利用効率も改善できる生体情報測定装置を実現すること。【解決手段】レーザーを光源とする共焦点光学系を用いた生体情報測定装置において、前記レーザーからパルス光が出力されるように交流駆動するレーザー駆動手段が設けられ、前記共焦点光学系の検出信号に基づき指の皮膚と爪を識別して指の爪上皮から第1間接までの皮膚部分を測定部位として指示するように構成され、前記共焦点光学系の検出信号に基づき指の静脈パターンを識別して被験者を特定することを特徴とするもの。【選択図】図1
