World’s first broadband infrared LED, claims Osram

November 04, 2016 // By Julien Happich
Designed for everyday food analytics, the SFH 4735 LED emits broadband infrared light in a wavelength range from 650 to 1,050 nanometers.

The component is well suited as a light source for near-infrared spectroscopy, for example to assess the quality of food thanks to mini spectrometers that could be developed as an add-on for smartphones.

The basis of the SFH 4735 is a blue 1mm 2 chip whose light is converted into infrared radiation with the aid of a phosphor converter developed specifically for this application. A residual blue component in the light helps users target the area they want to investigate. The emission spectrum of the SFH 4735 has a homogeneous spectral distribution in the infrared range. The chip is mounted in the proven and compact Oslon Black Flat package which is characterized in particular by good thermal resistance.

According to Udo Jansen, Product Marketing Manager for Infrared at Osram Opto Semiconductors, the emission range may be extended to include wavelengths up to 2,000 nanometers, into the middle infrared spectral range. This would allow more precise and detailed measurements and will open up new options for everyday analyses of certain environmental parameters such as air quality.

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