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2 / 192018-08-16 | Document No.: AN097
Table of contents
A. Iris recognition system ............................................................................................2
The hardware / optical system ...........................................................................4
Iris recognition software .....................................................................................5
B. SFH 4780S ..............................................................................................................5
Wavelength .........................................................................................................6
Optical bandpass filter ........................................................................................8
Eye / face illumination .......................................................................................11
Thermal consideration ......................................................................................11
Red glow ...........................................................................................................12
Eye safety .........................................................................................................13
Cornea limit .......................................................................................................14
Skin limit ...........................................................................................................15
Retina limit ........................................................................................................15
General considerations .....................................................................................17
C. Summary ...............................................................................................................18
D. Literature ...............................................................................................................18
A. Iris recognition system
Personal authentication is becoming a key requirement for various electronic
devices. Besides of the pin number, today most systems are based on so called
biometric “properties”.
Biometrics can include fingerprints, facial features, retina, iris, voice, fingerprint,
palm-prints, vein structures, handwritten signatures and hand geometry. All
these biometrics have various advantages and disadvantages. However, only iris
recognition claims to be a “hard-to-spoof” system in combination with an ultra-
low false acceptance rate (i.e. one in a million). Additionally, it also features
greater speed, simplicity and accuracy compared to other biometric systems. [1]
The traits of iris recognition systems rely on the unique patterns of the human iris
which are used to identify or verify the identity of an individual.