Osram has claimed the world’s first LED that emits broadband infrared light in a wavelength range from 650 to 1,050 nanometers (nm). The LED is well-suited for near-infrared spectroscopy, for example, for analyzing food.
Infrared spectroscopy can be used in the food industry and in agriculture to measure the water, fat, carbohydrate, sugar or protein content of foodstuffs. This data provides an indication of freshness, quality or calorie content.
The new infrared LED can now allow IR spectroscopy for the consumer space. For instance, one option would be a compact sensor – like a USB stick – which would be used with an appropriate smartphone app to measure calories, freshness or nutritional content.
The SFH 4735 is based on a blue 1 mm2 chip in UX:3 technology. Its 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.
Udo Jansen, Product Marketing Manager for Infrared at Osram Opto Semiconductors, comments, “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.”
For further details, view the full Press release.