Posts Tagged ‘colour temperature’

Full-spectrum Light and Colour Perception

Monday, May 23rd, 2011

Each year in Hungary, the Costruma expo welcomes over 60,000 visitors to meet more than 600 exhibitors from over 19 countries.


This year, Viva-Lite partners, FL TRADE Kft. exhibited Viva-Lite full-spectrum bulbs. The stand, which focused on showing the quality of light that could be achieved with full-spectrum bulbs, produced serious interest amongst visitors.



Who’s talking about full-spectrum lighting – issue 5

Thursday, September 2nd, 2010

Around the world different people are talking about how they use full-spectrum lighting in their day-to-day lives.  We feature some of the best here.

Vitamin D2 vs D3 Vs Sunlight | Health News and Tips
But full spectrum lamps may be much safer than UBV light alone because full spectrum light naturally limits the total amount of vitamin D3 the skin makes in the body. Research has not been done on common full spectrum CFS lightbulbs to …

Better Lighting For Your Computer

Monday, June 7th, 2010

Ever notice how people texting at night have that eerie blue glow? Or wake up ready to write down the Next Great Idea, and get blinded by your computer screen?

During the day, computer screens look good—they’re designed to look like the sun. But, at 9PM, 10PM, or 3AM, you probably shouldn’t be looking at the sun. This little software tool called “F.lux” is all you need to change it. It makes the color of your computer’s display adapt to the time of day, warm at night and like sunlight during the day. (more…)

The Colour Rendering Index (CRI)

Monday, February 15th, 2010

We felt it is high time to write a brief blog article about the so-called “colour rendering index“, or CRI as its abbreviation is called. The CRI is often quoted in “Ra” (general color rendering index).


What does Wikipedia have to say about the CRI: “The color rendering index (CRI) (sometimes called color rendition index), is a quantitative measure of the ability of a light source to reproduce the colors of various objects faithfully in comparison with an ideal or natural light source. Light sources with a high CRI are desirable in color-critical applications such as photography and cinematography. It is defined by the International Commission on Illumination as follows: ‘Color rendering: Effect of an illuminant on the color appearance of objects by conscious or subconscious comparison with their color appearance under a reference illuminant’.”


As this sounds a wee bit complicated, we’ve prepared an article which (hopefully) explains a bit mor simple what the CRI is and does. (more…)