System and method for obtaining complete palm vein image

Abstract

The invention discloses a system and a method for obtaining a complete palm vein image. The system comprises a first near-infrared LED (light emitting diode), a second near-infrared LED, a third near-infrared LED, a circuit board, a light condensation cylinder, ground glass, black shading paper, an optical imaging system, a visible-light filter and an image sensor, wherein the first near-infrared LED, the second near-infrared LED and third near-infrared LED are arranged on the bottom face of the light condensation cylinder; the ground glass is arranged on the top face of the light condensation cylinder; the optical imaging system comprises a first lens and a second lens; and the light condensation cylinder, the ground glass, the black shading paper, the optical imaging system, the visible-light filter and the image sensor are placed on the same optical axis sequentially. According to the system and the method, a light source is simple in structure; the cost is low; the purchase and fabrication are facilitated; the light condensation cylinder designed ingeniously allows emergent light to be reflected for many times to avoid light intensity loss; uniform illumination light is obtained; the imaging contrast of a vein is increased; and the complete palm vein image is obtained.

Description

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AI Technical Summary

Benefits of technology

This technology allows for creation of small lights on your fingers or other parts instead of bulky lamps like those used at home. These tiny lights have very little power but they work well even when there's no sunlight during daytime hours. They also reflect infra red colors back into their own eyes without losing too much energy over time. By doing this, these devices help make blood vessels look better by showing them clearly under different types of brightness conditions such as direct view (LAD) cameras). Additionally, it provides more accurate depth perception than traditional methods while still being affordable compared to expensive lasers.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the accuracy and reliability of identifying individuals from palmar veins captured during physical activity or communication without being able to see them overlapped due to shadows caused by clothing worn around hands.

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