FINGERPRINT IDENTIFICATION ASSEMBLY USING TOTAL REFLECTION TO IDENTIFY PATTERN OF THE FINGERPRINT

摘要

A fingerprint identification assembly using total reflection to identify a fingerprint pattern is provided to make a sensor of the assembly detect the fingerprint pattern by fully reflecting the fingerprint pattern on an object lens of the assembly, as the first and second reflection lens is included in the assembly. A body(6) has the object lens(11) mounted to an upper side to receive a fingerprint and the first reflection lens(12) receiving light reflected from the first lens at a bottom side. A light source(4) emits the light to the first reflection lens. A diaphragm(16) is mounted to a connection part between the body and a detector, and a back side of the diaphragm is coated by black paint. The detector is joined to the body as one body to receive the light reflected from the first reflection lens, and compares the received and reflected light with information stored in the sensor(10) by having the sensor for receiving the light reflected from the first reflection lens. The first reflection lens and the second reflection lens(14) are a concave lens.