Everlight introduces 810nm IR LED for iris recognition

Taiwan-based Everlight Electronics Co Ltd has launched the NIR-C19M series, which has an emission wavelength of 810nm (since this yields the clearest contrast for reading the pattern of the iris). The recognition process is said to be precise and quick and features excellent heat dissipation, making it suitable for iris recognition applications in security surveillance systems (access control) and portable handsets.

In response to market demand and the resulting development of appropriate technology, the concept of ‘body is access code’ has been integrated into many systems and devices. Smart biometric identification allows rapid and easy measurement of the users’ unique patterns in the fingerprint, voice, iris and face in order to avoid the problem of recalling traditional long passwords. Infrared LEDs for non-contact optical identification have the advantages of compact size, strong security and quick recognition speed, making them increasingly sought-after.

Everlight’s NIR-C19M series for non-contact optical iris recognition adopts a molding manufacturing process. Compared with the traditional glue dispense manufacturing process, molding results in a smoother surface that not only enhances the look but also increases reliability. The NIR-C19M series works with a wavelength of 810nm and uses advanced image signal processor (ISP) together with a CMOS sensor to receive the infrared reflection from the human eye in order to authenticate iris identification. The firm says that its unique optical design achieves a clear high reflection rate, a small angle (FOV=25) and a radiant intensity of up to 2700mW/Sr below 1000mA.

With a thermal resistance of 4.38℃/W, heat dissipation is superior to any other competing product on the market, it is claimed. The device has also passed IEC62471 (a safety regulation to prove that no harm arises to human eyes and skin).

In addition to these optical features, the dimensions of NIR-C19M series are just 3.5mm x 3.5mm x 2.3mm, which is particularly desirable for space-constrained portable devices.