High End Systems GigaPix and MegaPix Unleashed

In the early 2000s, many people were uncertain whether LEDs could ever light a stage well enough to satisfy lighting designers. At the time, they weren’t quite bright enough, the dimming was steppy, they were expensive, and they didn’t render colors and skin tones well. One by one, all those problems were overcome, including, in my humble opinion, the color rendition issues. Rob Gerlach was one of the first to recognize how best to achieve that.

In 2003, he wrote a paper called LEDs to Light the Theatre, laying out one of the first comprehensive studies of LED technology for stage lighting. By using spectral analysis and human perception testing, he made a disciplined argument that an RGB LED array supplemented by other LED wavelengths could produce a more natural, fullspectrum white light. He specifically cited lime LEDs with a 565nm wavelength as being critical to filling the spectral gaps left by RGB or RGBA systems. The lime LED helps bridge the gulf between yellow and green peak wavelengths.

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