In case you’re developing products with LED lights, you might be interested in the following:

“In the past years the application range of LEDs has increased drastically. Perspectively, LED light will displace energy-efficient light bulbs. The light emitted by LEDs has slight fluctuations that are conditional upon development, working temperature and aging processes. The MAZeT GmbH have managed to tackle this complex of problems and provide solutions. The company from Thuringia has developed a RGB-LED color light regulation, that uses direct optical feedback via true color sensors for a defined readjustment of light color, to ensure a long-term stability of the light color. Furthermore this outstanding innovation involves the option of color dynamic adjustment. Therefore for example innovative and energy-efficient lightings can be developed, that only adjust the missing spectral rates to existing light. Additionally the light spectrum can be kept constant within a large temperature range.” That’s from the documentation for the 12th Innovation Award Thuringia 2009, which awarded MAZeT in the “Light & Life” category.

Yes, that sounds a bit Germanic, but evidentially the tech has some valuable benefits as regards lighting.