News

16 April 2009

 

Osram launches IR LEDs for surveillance and transport applications

Osram Opto Semiconductors GmbH of Regensburg, Germany says that, with six powerful thin-film chips and a hemispherical lens, its new Infrared OSTAR Lighting LED produces 3.5W of optical output power at an operating current of 1A.

The beam angle and radiant intensity can be varied with standard secondary optics that are readily available on the market. The hexagonal honeycomb shape of the high-power component enables multiple IR LEDs to be combined to form a large space-saving matrix so that the output power can be increased many times.

The IR OSTAR Lighting LED is available in two wavelengths. At 850nm, the SFH4750 is an optimized union of maximum spectral sensitivity for CCD and CMOS cameras with suppressed visibility for the human eye. The SFH4751 is a version with a wavelength of 940nm (to which the human eye is almost insensitive) for use in applications where visibility of the light source must be eliminated.

“We were able to bring the infrared OSTAR Lighting quickly to market because of the synergies among the various technologies at the product development stage,” says Harry Feltges, marketing manager for Infrared Components. The package is the same as that of the existing white OSTAR Lighting LED, so users can take advantage of the shared thermal and mechanical designs, he adds.

With their high optical output, both versions of the IR OSTAR Lighting LED suit industrial lighting illumination units for camera-based surveillance systems such as CCTV systems (used to improve public safety on the streets, at railway stations, at airports and in schools, and also to protect museum exhibits against theft).

The LEDs also have a long lifetime, even in pulsed mode applications, and are therefore suitable as light sources for intelligent transportation systems (ITS) such as traffic monitoring, toll systems and automatic number plate recognition (ANTR).

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