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Osram Launches IR Topled D5140 LED for Fitness Bands Sensor Applications

Malaysia: Osram Opto Semiconductors introduces a new photodiode which requires less pc board space. Infrared Topled D5140 enables more compact sensors to be produced for monitoring fitness levels just like fitness armbands. It uses red or green light to measure precise heart rate by optimizing the spectral sensitivity and the product can also be used as an ambient light sensor. 

Heart rate measurement occurs when the light hitting the skin’s surface is absorbed by the detector. The blood in the arteries absorbs more light than the tissue surrounding it, the detector signal strength changes according to the volume of blood where the light passes.

IR Topled D5140 is the updated version of the SFH 2440 photodiode and uses the previous model as the basis of new component. Previously the model is offering packages which had to be soldered to side legs. Because these legs are not used in the new design, the Topled D5140 is around 1.4 mm shorter, now measuring 5.1 millimeters (mm). 

TechSci Research depicts that the both model has an identical electrical and optical properties and with the short switching time of typically 90 nanoseconds, the spectral sensitivity optimized for visible light is particularly noteworthy, with a maximum sensitivity of 620 nanometers. Although the sensitivity of to the two photodiodes are suppressed in the infrared spectral range. These product developments are set to benefit Osram grow in this niche market.

According to a recent report published by TechSci Research “Global Infrared LED Market By Application (Imaging, Lighting, Surveillance, Automotive & Others), By Region (Asia-Pacific, Americas, Europe, and Middle East and Africa) and Competition Forecast and Opportunities, 2010 – 2020’’, the global infrared LED market is projected to grow at a CAGR of more than 9% during 2015-2020. Major factors propelling growth in the global infrared LED market include rising use of infrared LEDs in smartphones for iris recognition, and increasing use of these LEDs in CCTVs and surveillance systems. Asia-Pacific is the largest regional market for infrared LEDs in the world, due to the increasing penetration of these LEDs in smartphones, automotive, surveillance systems and other segments. Epistar Corporation, Nichia Corporation, Everlight Electronics, High Power Lighting, etc. are among the major Infrared LED companies involved in manufacturing infrared LEDs for various end user applications.


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