| There are a lot of biometric systems on the market to identify human beings from their physical characteristics. Of all these systems the fingerprint identification system is considered more accurate and reliable. The purpose of the thesis was to develop a compact and simple fingerprint sensor to get a good quality fingerprint. A new fingerprint sensor has been successfully designed and built using a converging holographic optical element in the form of a diffraction grating along with a spectral filter. The fingerprint sensed by this sensor gives a smudge-free, high-resolution image with excellent contrast between ridges and valleys. |
