Osram targets farmers, horticulturists and wine growers with a near-infrared broadband LED for field reflection spectroscopy.

Osram-SFH4736-spectroscopy_led
“One of the most important decisions that farmers and owners of vineyards should make is to get the right moment for the harvest,” he said. “The simple fact of scanning fruit or cereal crops with the near-infrared LED high mast light factory installed on a smartphone or tablet produces reliable information about sugar, water and fat content.”

Application of Osram-SFH4736 spectroscopy. These tests are based on the absorption behavior of certain compounds, and require a light source with a known spectrum that is large enough to excite those molecules.

To obtain the spectral width, Osram is using the phosphor conversion (pumped by a blue die) into its Oslon Black SFH 4736 LED to cover 650 to 1,050nm.

To facilitate the work of the following spectrometer, the intensity of the LED panel light factory output increases with the integrated primary optics that obtain 90% of the light generated within a beam of +/- 40 °; this is an improvement over Osram’s earlier attempt to obtain a source of horticultural spectrometer.

“Compared to the SFH 4735, which has no lens, we are achieving more than twice the performance with the SFH 4736 at a solid 80 ° angle,” said Osram marketing manager Carola Diez. “The SFH 4736, therefore, marks a further step towards broadband emittign diodes for even more efficient spectroscopy systems.”

That said, the previous 4735 was adopted by the Israeli company of Consumer Physics for its Scio near-infrared spectrometer, about the size of a matchbox.

The new LED has a footprint of 3.75 x 3.75 mm and has a height of 2.3 mm.

No small data have been provided and, at the time of writing this report, the product does not appear to have a website or data sheet on the Osram website. Links have been requested.