< Topic >Offer the sensor for the vein network of the part of the living body.SolutionsAs for this invention, as for this sensor, the wave guide which illuminates infrared ray illumination source (102) with, infrared ray illumination source (102) by (104) being, in order the said wave guide (104) from one main selection direction (116) with the infrared ray (114) to select at least, one which is intended selection area (106) one aspect (112) it possesses at least on the part of the living body (50) the sensor for the vein network (100) to in regard, the wave guide (104) with, the surface (112) with opposing, to be laid out, at those time, the living bodyThe part (50) the aisle which possesses the entrance which can penetrate (118) it decides, at the same time the exposure to light component (110) includes, image acquisition means (108) with, it includes, one or each selection area (106), in order selection area (106) one or each main selection direction (116) the exposure to light component (110) with not to cross, it is designed in such a way that it is directed.< Choice figure >Drawing 1【課題】生体の部分の静脈網のためのセンサを提供すること。【解決手段】本発明は、生体の部分(50)の静脈網のためのセンサ(100)に関し、このセンサは、赤外線照明源(102)と、赤外線照明源(102)により照明される導波管(104)であって、該導波管(104)から少なくとも1つの主抽出方向(116)で赤外線(114)を抽出するように意図された少なくとも1つの抽出区域(106)を1つの面(112)上に有する、導波管(104)と、面(112)と対向して配置され、それらの間に、生体の部分(50)が進入することができる入口を有する通路(118)を定め、かつ感光素子(110)を含む、画像取得手段(108)と、を含み、1つ又は各々の抽出区域(106)は、抽出区域(106)の1つ又は各々の主抽出方向(116)が感光素子(110)と交差しないように方向付けられるようになっている。【選択図】図1