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Osram 850 nm IRED chip offers a lot more

The device can be used in surveillance, digital image processing, 3D measurement, pattern recognition and gesture detection
Osram says its Oslon Compact infrared light-emitting diode (IRED) closes the gap between high-power and low-power IREDs.

Despite its very small package Osram says its latest offering has an impressive output. It can therefore be used in tasks such as surveillance, digital image processing, 3D measurement, pattern recognition and gesture detection.

The infrared Oslon Compact SFH 4710 has been designed especially for industrial applications.


As a mid-power LED with a typical output of 270 milliwatts (mW) from an operating current of 500 milliamps (mA), it is a welcome addition to the product portfolio of Osram Opto Semiconductors, occupying the output range between Power TopLED and Oslon Black.

The new IRED accommodates a small powerful chip with an edge length of 750 µm and half the footprint of standard chips in the Oslon Black. With package dimensions of 1.6 mm x 1.2 mm x 0.8 mm the Oslon Compact is not much larger than the chip itself and is therefore one of the smallest in its output class.

"Even so, our new Oslon Compact has excellent heat dissipation properties and can operate at high currents," says Jörg Heerlein, responsible at Osram Opto Semiconductors for product marketing for infrared components in the industrial sector.

“The high output, which is achieved thanks to state-of-the-art thin-film chip technology, combined with the small package, opens up numerous new applications, particularly where there is very little available space but performance demands are high. And if required, components can be packed very close together to increase the optical output with a high degree of flexibility.”

Applications with or without external optics

The infrared 850 nm LED has an emission angle of +/-65° and does not need internal optics or reflectors. Its light can however be successfully injected into narrow-angle external optics. It has a thermal resistance of less than 25K/W.

With external optics it is ideal for illumination in surveillance applications and for machine vision tasks such as pattern recognition and 3D measurement because the wavelength of 850 nm is barely perceptible to the human eye but can be very easily detected by camera systems.

Without external optics the IRED perfectly covers the near-field range of a few metres and is therefore suitable for example for eye tracking and gesture detection.


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