What is the Life Span of our lighting?

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:
rendering: Effect of an illuminant on the color appearance of objects by conscious or subconscious comparison with their color appearance under a reference illuminant.

Pls refer to the table of CRI, Lumen & life span for different types of light source

Note :The lumen (symbol: lm) is the SI unit of luminous flux, a measure of the power of light perceived by the human eye. Luminous flux differs from radiant flux, the measure of the total power of light emitted.

Interesting to find out that the incandescent lamp (Bulb) is the most inefficient lighting option for Malaysian.More than 90% of the energy is used for heat and only 10% of the energy is use for the lighting purpose.


Think twice before you switching on the light!!!