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Osram Infrared LEDs Allow for Intercommunication Among Luminaires
  • USA - English


News provided by

Osram Opto Semiconductors

Mar 07, 2017, 18:15 ET

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Sunnyvale, CA (PRWEB) March 07, 2017 -- The Australian company Organic Response has developed technology that allows individual luminaires in large lighting installations to communicate with their immediate neighbors – just like a school of fish would do. Communication is based on modulated infrared light signals that are emitted by high power infrared LEDs – the Oslon SFH 4725S line – from Osram Opto Semiconductors.

Organic Response Lighting Control Systems are designed to operate wide area lighting installations with maximum energy efficiency while still maintaining a high level of comfort. The key lies in a system of Distributed Intelligence that enables the system to react to the presence of persons in the immediate vicinity of sensors, as well as to those further away.

How it works

At the heart of the system are sensor nodes integrated in each luminaire. They comprise a motion sensor, an ambient light sensor and an infrared transmitter/receiver pair used for communication. The moment a sensor node detects occupancy, the luminaire reacts by putting out a predetermined light level. At the same time, it communicates that occupancy to its neighbors by emitting an infrared signal. Subsequently, the neighboring sensor nodes respond by setting their luminaire to a predetermined light level appropriate to an occupant in that vicinity. They then simultaneously relay another infrared signal to their own neighbors, informing them there is an occupant two light fittings away.

Ultimately, each sensor node “knows” how close a person is and sets the luminaire to an appropriate brightness. In this way, it is not just the spot the person is in that is illuminated, but also adjacent areas. This also eliminates the sensation of literally stepping into darkness when entering currently unoccupied spaces.

Using light as a means of communication ensures that only luminaires within the person’s field of vision are turned on while systems in neighboring rooms, for instance, will not be triggered. In case a room or an office is reorganized, newly positioned walls will automatically block the infrared signal and thus adapt the system response automatically to any adjustments.

High-power infrared emitter with short switching times

This solution is designed to address a broad range of applications of different scales, therefore requiring high power infrared emitters. The infrared light signal must be set in a way that it reaches all of its immediate neighbors, but does not affect the units beyond. This operating distance first of all depends on the strength of the light signal. But it is also affected by ambient light conditions, the height of the ceiling, and the reflectivity of the floor. As such, signal strength must be adjusted individually according to environmental and structural conditions. In contrast to lighting installations that require IDs assigned to each luminaire and which therefore need to be programmed, the organic response solution uses the adjustable range of the IR signal to address specific luminaires, eliminating the need for programming during installation.

The infrared (IR) LED Oslon SFH 4725S provides enough optical power to ensure communication for all possible setups. The IR LED is based on stack technology, which was developed by Osram to provide one chip with two emission centers, thereby doubling its output. Driven at 1 Ampere, the SFH 4725S yields 990 milliwatts of optical power. Its narrow emission angle of ±45° results in a radiant intensity of 425 mW/sr. The emitted light has a wavelength of 940 nanometers, which is completely invisible to human eyes but a perfect match for the spectral sensitivity of silicon photodetectors. The SFH 4725S features short rise and fall times of 10 and 15 nanoseconds, respectively, and thus permits modulated light signals.

“We initially designed this emitter for infrared illumination and 3D camera applications. But with its high power, narrow emission angle and fast switching time, it provides a great solution for optical communication, too,” says, Espacio Muñoz, Marketing Manager, Infrared at Osram Opto Semiconductors.

Dean Campbell-Smith, Technical Director at Organic Response reports: “While developing our product, we evaluated a number of suppliers for the infrared LED component. Considering the trust associated with the brand and the strength of their IR LED product, we chose Osram. This turned out to be an excellent decision for us as it allowed us to address the varying requirements of our clients through Osram’s ongoing product support and their ability to deliver.”

Press Contact:
Kate Cleveland
Tel. 248-277-8018
Fax 248-596-0395
Email kate.cleveland(at)osram-os.com

Technical Information:
Tel. 866-993-5211
Email: support(at)osram-os.com
Sales contact: http://www.osram-os.com/sales-contacts

ABOUT OSRAM

OSRAM, based in Munich, is a globally leading lighting manufacturer with a history dating back about 100 years. The product portfolio includes high-tech applications based on semiconductor technology such as infrared or laser lighting. The products are used in highly diverse applications ranging from virtual reality, autonomous driving or mobile phones to smart and connected lighting solutions in buildings and cities. In automotive lighting, the company is the global market and technology leader. Based on continuing operations (excluding Ledvance), OSRAM had around 24,600 employees worldwide at the end of fiscal 2016 (September 30) and generated revenue of almost €3.8 billion in that fiscal year. The company is listed on the stock exchanges in Frankfurt and Munich (ISIN: DE000LED4000; WKN: LED400; trading symbol: OSR). Additional information can be found at http://www.osram.com.

Kate Cleveland, Osram Opto Semiconductors, http://www.osram-os.com, +1 248-277-8018, [email protected]

Modal title

Thanks to high power infrared LEDs from Osram, Distributed Lighting installations can be operated in an energy-efficient way while maintaining a high level of comfort.  Image: Organic Response
Thanks to high power infrared LEDs from Osram, Distributed Lighting installations can be operated in an energy-efficient way while maintaining a high level of comfort. Image: Organic Response
Thanks to high power infrared LEDs from Osram, Distributed Lighting installations can be operated in an energy-efficient way while maintaining a high level of comfort.  Image: Organic Response

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