Displays

Compact LED doubles lumen output

13th January 2015
Mick Elliott

The new Osram Ostar Stage LED from Osram Opto Semiconductors offers more than twice the lumen output than earlier members of the product family with a component surface that is only 30% larger. The LED, available from distributor Rutronik is ideal for more compact and powerful moving heads for stage and spotlights for trade fairs and architectural lighting.

The Osram Ostar Stage is equipped with four high-current chips based on the latest thin-film and UX:3 chip technologies. With an area of 2mm2 each, the chips are twice as large as the previous ones, but at 5.7 x 6.4 x 1.3mm, the package size is only slightly larger.

Thin-film chips in red (625nm) and UX:3 chips in green (530nm), blue (“deep blue”: 453nm) and white are used. Up to 4.5A can be applied to each chip, which allows more light to be produced from a small surface. With a binning current of 1.4A the red chips achieve typical values of 140lm, and the green chips 280lm.

The “deep blue” chip provides a light output of 1.8W. If the LED is operated at the maximum current of 4.5A, the brightness per color increases by factor 2.6.

Thanks to a new ceramic converter, the white chip in the Osram Ostar Stage will have a lifetime of 20,000 hours (L50/B50) at full output, achieving a brightness of more than 1000lm.

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