Finger Vein Pattern Imaging

Definition

A technology to visualize and capture an individual’s finger vein network patterns.

Introduction

Blood vessels are not exposed out of the human body, and their network patterns are normally impossible to see without the range of visible light wavelength. (Retinal blood vessels are the only exception, which can be seen in visible light. However, it is necessary to use specially designed devices such as ophthalmoscopy or retinal scanner to observe the blood vessels on the retina.) In order to visualize blood vessel patterns that are hidden under the skin, it is necessary to use appropriate imaging technologies. It is well known that hemoglobin absorbs near infrared raysmore than other substances that comprise the human body. Since most of the hemoglobin in the human body exists in red blood cells that are flowing inside blood vessels, the blood vessel network patterns can be seen as dark area by infrared imaging systems. Finger vein pattern imaging is a technology that...