Author Archives: Carl R Koehler

Energy Management

Energy Management

Energy management for lighting systems is sometimes left to the last minute and is often forgotten.  My philosophy has always been to use our energy wisely.  My goals include  many things in quality lighting design, but it must also include paying attention to the energy use. This is not only ensuring we reduce lighting loads, butContinue Reading

Lighting Certification – LC

More than a decade ago, the Illuminating Engineering Society recognized the need to qualify lighting professionals and through the National Council on Qualifications for the Lighting Professions or NCQLP a national North American standard of qualifying was established. They established “Lighting Certified” or “LC” to help others recognize qualified lighting people. For the first few yearsContinue Reading

Fluorescent Phosphors

Fluorescent Phosphors

The cost of phosphors that are used in fluorescent lamps will be increasing and this should provide some insight. To give you some background, phosphors are a part of what is called “rare earth” metallic elements with a variety of unique properties. There are 17 groups used in such products as hard drives, fuel cells,Continue Reading