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.