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850nm black LEDs aimed at security apps

10 Aug 2015

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Osram Opto Semiconductors has developed an infrared LED (IRED) with a wavelength of 850nm. According to the company, the Oslon Black SFH 4713A is geared for security applications such as camera-surveillance of public spaces, company premises and entrances to banks and shopping centres.

While previous Oslon Black high-flux IREDs were designed for systems with a range of up to 100m, the SFH 4713A supports efficient designs.

Oslon Black SFH 4713A

Infrared short- to mid-range lighting systems are the target application for the SFH 4713A from Osram. To create its IRED, Osram transferred the high-performance technology behind the Oslon Black, with its optical output of over 1W, to the mid-range power classes of about 760mW, rounding off its portfolio. From now on the IRED is available with a beam angle of 90°.

The IREDs are the result of advances in chip and package technology, developments that enabled Osram to engineer an Oslon Black with unprecedented electro-optical efficiency less than a year ago, stated the company. The SFH 4713A now makes these advances available in the mid-range power classes as well. The high-efficiency IRED offers an optical output of 760mW at a current of 1A. Two to five IREDs typically are adequate for achieving ranges between 10 and 50 meters. Due in part to the smaller chip size, the IRED is a lower-cost alternative to the SFH 4715A for systems with mid-range output requirements, added Osram. From autumn 2015, the SFH 4714A with a beam angle of 150° and an optical output of 720mW will complement the existing version. Both components close the gap between the extremely small Oslon Compact, with 270mW at 0.5A, and the high-output Oslon Black versions with an optical output of over 1,135mW at 1.5A. The result is a product portfolio of high-efficiency 850nm IREDs that serves the entire spectrum of infrared lighting applications and output requirements.

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