A palm vein imaging apparatus is provided that is capable of being incorporated into a slim electronic device. A palm vein imaging apparatus (9) includes: an imaging system of an image sensor 18 and an imaging lens module (19) an illumination system of a plurality of illumination infrared ray LEDs 21 and a light guide body (22), the plurality of illumination infrared ray LEDs (21) being arranged in a circle around the imaging system a distance-measuring system of a plurality of distance-measuring LEDs (24) and distance-measuring lens modules (25) located outside of the illumination system a controlling system of a plurality of chip components (17) that include at least a CPU and a memory a printed circuit board (16) that includes the imaging system, the illumination system, the distance-measuring system, and the controlling system on top and under surfaces thereof a housing (13) that accommodates the printed circuit board together with the systems a top cover (14) that covers the top opening of the housing and a recess (15) at a portion of an inner top surface of the top cover that faces the imaging lens module, the recess (15) being thinner than a portion therearound, wherein the imaging lens module (19) is located in a manner such that an upper portion thereof is in the recess (15), and the apparatus has a thickness of 6mm or less.
