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Osram shows third generation plant growing LED


2W Oslon Square Hyper Red offers improved radiant flux for plant lighting in commercial greenhouses

At this year's Lightfair in Philadelphia (USA), Osram Opto Semiconductors showed a new high power LED prototype designed to promote plant growth.

The Oslon Square Hyper Red is a third-generation 2 W LED designed to cut the cost of plant lighting systems by featuring improved emission characteristics, higher optical output, and better corrosion resistance.

Plants need water and light to grow. By using LEDs with different wavelengths, commercial growers are now able to control each individual stage of plant growth. With a wavelength of 660 nm the prototype of the Oslon Square Hyper Red, for example, can control the growth of blossom. Together with the deep blue (450 nm) and far red (730 nm) versions, the Oslon family covers the entire spectrum of plant growth.

The prototype of the high-power LED has an integrated 2 mm x 2 mm chip which provides improved performance. By using the latest technologies, developers have been able to achieve a typical radiant power of 905 mW with radiant efficacy of 60 percent, at a current of 700 mA and an operating temperature of 25 degC. This represents an improvement of 13 percent in terms of radiant power and 25 percent better radiant efficacy compared with the current Oslon SSL. The beam angle of the Oslon Square Hyper Red is 120°.

"Thanks to its high corrosion resistance and long life, the new Oslon Square Hyper Red is extremely reliable. Our new flagship product therefore also meets the usual high quality standards of the entire Oslon family", said Kok Peng Lim, product manager SSL at Osram Opto Semiconductors.

Because the Oslon Square Hyper Red has the same footprint as the existing Oslon SSL, it can be used as a replacement. Switching to the new product makes economic sense because the new high-power LED is more powerful than its predecessor and it can replace two Oslon SSL LEDs.

Volume production of the LEDs is scheduled for the end of 2017.

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