“Lack of sunlight exposure causes serious vitamin D deficiencies, which in turn cause a range of health issues such as osteomalacia and bone frailty, cancers as well as seasonal and other depressions. We receive around 80% of our D vitamin need from sunlight and people spend increasingly more time indoors, e.g. at work. Lack of daylight and its impact on the health of building occupants is becoming ever more salient. The challenge to architects and lighting designers is to optimize the effect of light in future sustainable buildings,” says Mohammed Boubekri.

This was followed up by James Carpenter with this statement: “Bring back daylight to buildings and use the elements of light from the outside to the inside”. He works with transparency in windows and how light works through the building.

“We have to use light deep inside the buildings to enjoy the daylight, which depends on the materials you use. I work with the outside elements of daylight as inspiration, for example the reflection of light in water - and then turn it into daylight opportunities inside,” says James Carpenter.

http://www.thedaylightsite.com/showarticle.asp?tp=99&id=168&catid=17&hl=daylight