PROBLEM TO BE SOLVED: To provide a blood vessel detector that increases detection accuracy by reducing an influence of spots and the like on the skin without deteriorating spatial resolution of blood vessel detection.SOLUTION: A blood vessel detector includes: a light source part 1 that generates light a beam-transformation optical element 2 that changes a projection shape on a plane perpendicular to a light propagation direction to a shape with different vertical and horizontal widths a scanner part 3 that scans the light a receiver 4 that outputs a signal corresponding to reflected light intensity of the scanned light and a signal processing part 5 that detects a blood vessel on the basis of the signal output by the receiver 4.COPYRIGHT: (C)2014,JPO&INPIT【課題】血管検出の空間分解能を低下させることなく、皮膚上の斑点等の影響を低減し、検出精度を高めた血管検出装置を提供する。【解決手段】光を発生する光源部1と、光の伝播方向と垂直な平面上における投影形状を、縦幅と横幅が異なる形状に変えるビーム変換光学素子2と、光を走査するスキャナ部3と、走査した光の反射光強度に応じた信号を出力するレシーバー4と、レシーバー4が出力した信号に基づき血管を検出する信号処理部5とを備えた。【選択図】図1
