Power Electronics
This IRED from Osram Opto Semiconductors is suited for security applications such as camera surveillance of public spaces company premises and entrances to banks and shopping centers Image courtesy of Osram Opto Semiconductors

This IRED from Osram Opto Semiconductors is suited for security applications such as camera surveillance of public spaces, company premises, and entrances to banks and shopping centers. (Image courtesy of Osram Opto Semiconductors).

Black LED Provides Near-Range Illumination for Camera Surveillance

Osram Opto Semiconductors has introduced the Oslon Black SFH 4713A, an infrared LED (IRED) with a wavelength of 850 nm. It is suited for security applications such as camera surveillance of public spaces, company premises, and entrances to banks and shopping centers. While previous Oslon Black high-flux IREDs were designed for systems with a range of up to 100 meters, the new SFH 4713A supports efficient designs for near-range illumination from about 30 to 200 feet.

Infrared short- to mid-range lighting systems are the target application for the SFH 4713A. To create its new IRED, Osram transferred the high-performance technology behind its Oslon Black, with an optical output of over 1 W, to the mid-range power class of approximately 760 mW. Currently this IRED is available with a beam angle of 90°.

The new high-efficiency IRED offers an optical output of 760 milliwatts at a current of 1 A. Two to five IREDs are typically adequate for achieving ranges between 10 and 50 meters. Due in part to the smaller chip size, the new IRED is a lower-cost alternative to Osram's SFH 4715A for systems with mid-range output requirements.

In autumn 2015, another variant - the SFH 4714A, with a beam angle of 150° and an optical output of 720 milliwatts - will complement the SFH 4713A. These new components close the gap between the extremely small Oslon Compact, with 270 mW at 0.5 A, and the high-output Oslon Black versions with optical outputs of more than 1,135 mW at 1.5 A.

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