Osram makes small LED still brighter

28th November 2014

Osram Opto Semiconductors’ newly developed Soleriq P 13 for indoor spotlights and high bay lighting has achieved a brightness of up to 6800 lumens (lm), making it the most powerful LED in its series.

 

Despite the frantic pace of improvement for LEDs intended for general lighting applications over the past decade, development is continuing at a fast pace. 

 

LEDs have many advantages over conventional light sources, including lower energy consumption, much longer lifetimes, improved physical robustness, smaller size and faster switching – as well as many colours, if required. These benefits are by now becoming well known and LEDs have been forging a revolution in the global lighting industry. But this doesn’t mean that there are now few improvements to come – there are many.

 

Osram Opto Semiconductors, for example, has further developed its Soleriq range of LEDs, which have been designed to meet the requirements of professional indoor general lighting applications. Large flux output, small light emitting surfaces, virtually no colour variation, a colour rendering index (CRI) of greater than 80, and easy to use chip-on-board technology support easy and creative lighting design, says the company. 

 

These properties make Soleriq LEDs a highly efficient, high-quality and price-performance-optimised solution for all demanding and at the same time cost-conscious lighting manufacturers and designers. Now there is Soleriq P 13.

 

Soleriq P13 – ‘most powerful’

 

Together with its small light-emitting surface measuring just 13.5 mm in diameter, the P 13 – just unveiled in Munich - is a highly compact and powerful light source for various indoor lighting applications. It is ideal for high-powered spotlights in shops and museums, as well as for high bay lighting. 

 

The P 13 is the series’ highest-powered LED and comes in two versions having different CRIs - the CRI 80 LED, for example, delivers a brightness of 4000 lm, even at 85°C and 1050mA, and can be overdriven to deliver up to 6800 lm. This high brightness is achieved with a small light-emitting surface (LES) only 13.5mm in diameter. 

 

The package measures just 18 mm x 18 mm x 1.5 mm, so that this LED is ideal for compact and bright lighting solutions for indoor spotlights. For ambitious spotlight applications demanding a high colour quality, small beam angles and a high lumen output, the CRI 90 version delivers 3300 lm as standard and up to 5600 lm when overdriven.

 

Different LEDs - different applications

 

Explained Lim Kok Peng, Product Manager in Marketing for General Lighting at Osram Opto Semiconductors: “Customers could compare the P 13 with the Soleriq S 19 because of its similar light output of 4000 to 5000 lm. In fact, the new Soleriq P 13 has smaller dimensions and is, therefore, the right choice for more compact lighting solutions.” 

 

Osram says that compared with other products in the Soleriq P series, the P 9 or the P 6, customers now need fewer LEDs to achieve the same light output. This saves costs, as does another P 13 feature - the small LES allows a simpler lens design, which costs less and enables more compact lighting solutions. 

 

For more information, please use the link below.

 

Record figures with green LEDs

 

In yet another new development by Osram Opto Semiconductors, the company has coordinated the ‘Hi-Q-LED’ project to develop LEDs having an extremely high efficacy. This project, publically funded by Germany’s Federal Ministry of Education and Research (BMBF), has made pioneering advances with green LEDs, greatly diminishing the ‘green gap’, which is a significant drop in efficacy in the green spectral range. 

 

The project’s new development is a green emitting LED based on indium gallium nitride (InGaN) semiconductors, which achieves a record efficacy of 147 lumens per watt (lm/W) at a wavelength of 530 nanometres (nm) and a spectral width of 35nm. 

 

In addition, another green LED developed by combining a blue chip with a phosphor converter has achieved a record-breaking efficacy exceeding 200 lm/W.

 

A reduction of the carrier density in the light-emitting layers and a significantly improved material quality were the key factors behind this breakthrough, which is potentially an enabling technology for highly efficient projection systems requiring a high colour rendering index.

 

Currently, though, the high performances achieved by these two green emitting LED prototypes is only being considered as development data. More time will be needed, says Osram, to develop products well suited for mass production.

 

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