This invention is a non-ferrous lighting fixture and non-ferrous lighting system that can be used in areas with high magnetic fields or that require low EMI emissions, such as MRI operating rooms. This invention uses LED's to provide a high-intensity, quality white or other color light that is softened...http://www.google.com.au/patents/US7629570?utm_source=gb-gplus-sharePatent US7629570 - LED lighting system for use in environments with high magnetics fields or that require low EMI emissions