With the SFH 4736 Osram Opto Semiconductors has added a version with a narrow beam angle to its portfolio of broadband emitting infrared LEDs. The lens ensures strong directional light, improving overall system efficiency. The primary optics bundle 90 percent of the generated light within a beam angle of +/-40°, providing considerably more optical power per unit area on the target object – in other words focusing the light precisely where it is needed. As a result, more light is reflected to the spectrometer, leading to a stronger measured signal. Up to now, separate optics were needed to focus the light. With this new emitter this is no longer necessary, which reduces the costs for assembly, adjustment and design in the overall system.
Like its SFH 4735 predecessor, the SFH 4736 is based on a highly efficient, blue-emitting chip in UX:3 technology. A phosphor converter specially developed for this application converts the blue into infrared light with a wavelength range of 650 nm to 1050 nm. SFH 4736 is 2.3 mm high and has a footprint of 3.75 mm x 3.75 mm, comparable to that of the SFH 4735.
“Compared to SFH 4735 without a lens we are achieving more than twice the output with the SFH 4736 in a solid angle of 80 degrees,” said Carola Diez, Senior Marketing Manager at Osram Opto Semiconductors. “The SFH 4736 therefore marks another step toward even more efficient broadband NIREDs for spectroscopy applications.”
Back in late 2016, Osram Opto Semiconductors unveiled the predecessor to the current NIRED as the world’s first broadband emitter of this kind. The predecessor model is being used in various applications including in Scio, one of the first near-infrared micro-spectrometers from Israeli startup Consumer Physics. Resembling a matchbox in shape and size, the device was developed for the end consumer sector. The successor model is also suitable for use in the professional sector and can provide valuable assistance to farmers.
New Product: Oslon Black SFH 4736