Osram releases the smallest wideband infrared LED, ideal for making smartphones

- Oct 13, 2020-

On September 28th, Osram launched the new Oslon P1616 SFH 4737 wide-band infrared LED. This product not only wins the world's smallest wideband infrared LED with its ultra-compact package, but also has excellent output power and forward radiation intensity, and effectively reduces energy consumption through the new phosphorous technology. Oslon P1616 SFH 4737 wide-band infrared LED can help mobile spectrum solutions to make it a reality faster, and is also ideal for manufacturing smart phones.

Over the years, Osram Opto Semiconductors has been in a leading position in the field of research on compact, high-intensity, wide-band infrared transmitters suitable for spectral applications. In addition to the wide wavelength range, the high energy efficiency and small size of integrated components are also critical to system manufacturers. Osram's Oslon P1616 SFH 4737 integrates the above advantages, providing customers with better choices.

Are the shirts on the shelf made of 100% cotton? The apples in the supermarket look delicious, but will they have deteriorated and lost their nutrition? Observing its molecular structure up close can answer these questions. For the light source of the near infrared spectrum, the most important point is to cover the emission wavelength range as wide as possible. The wider the coverage, the more objects can be analyzed. When determining the composition or moisture content, it is necessary to illuminate the target object with broadband infrared (usually 650 and 1050 nm). At this time, part of the light source will be reflected, and the other part will be absorbed. The reflection and absorption ratio varies from object to object, and molecular fingerprints of each object can be obtained from this. The reflected light is collected by a special detector, and then the software processes the data and compares it with the information stored in the cloud to obtain the final measurement result.

Osram Oslon P1616 SFH 4737 uses an ultra-compact package of 1.6mm x 1.6mm x 0.9mm, making it the smallest near-infrared LED (NIRED) for spectral applications in the global market-its size is only half of Osram’s current smallest product . NIRED's compact design makes it an ideal choice for manufacturing smart phones. At the same time, this product can guarantee an excellent output power of 74mW at 350mA-approximately three times the peak value of the previous generation. In addition, the forward radiation intensity of this new product can reach 18mW/sr, which is twice that of OSRAM's previous NIRED products.

The outstanding performance of Oslon P1616 SFH 4737 in the full wavelength range makes it show another unique advantage in the field of spectroscopy. The sensitivity of common silicon-based detectors will decrease as the wavelength increases (especially in the band above 950 nm). In the past, it was necessary to increase the current to compensate for this. With the support of new phosphors, this new product can emit more light at higher wavelengths-and reduce the overall energy consumption of the system.

Carola Diez, Product Manager of Osram Opto Semiconductors Sensing Department, explained: “Oslon P1616 SFH4737 once again demonstrates our rich experience and excellent R&D technology in the infrared field. In mobile spectrum applications, our NIRED can not only help identify the freshness of food, but also It can identify counterfeit medicines and banknotes. In the agricultural sector, it can also be a key tool to help confirm the best harvest time."