Saturday, October 1, 2011

The advantages of LED lighting compared with sodium lamps

          I consider it important to publish these additional news, compared to the success of the previous post, today I propose some of the advantages of LED lighting against the traditional sodium vapor lighting:

Energy saving:

'Equal to' lighting with LED technology has an energy saving 50 to 80%.

Quality 'of light:

"The light emitted by sodium lamps, and 'yellow, not corresponding to the peak of sensitivity' of the 'human eye: the colors are not reproduced and is' therefore needed more' light to ensure a safe viewing.

"The LEDs instead emit cool white light, which allows lighting to achieve safe for road users (lower reaction time for the unexpected), with lower energy consumption. The white light through the fog much better, making vehicles more 'visible. Furthermore, LEDs also increase the quality 'of images captured by security cameras.

"The colorimetric rendering index (CRI) indicates the loyalty 'of color reproduction: is 20 for 80 for sodium lamps and LED lamps.

"The idea of ​​linking LED street lighting also comes from the latest scientific discoveries in the field of perception: studies on visibility 'with white light based on the fact that according to the luminance or not we use all the perceptual apparatus of our eye (rods and cones). The results indicate that the light sources are preferred for the spectral prevalent in the band of blue, like the LED, without requiring high luminance values. The high-pressure sodium lamps have a spectrum centered in the red band, far outside of the peak sensitivity 'of the human eye.

"You can 'be said that with the sodium lamps need to increase the light output by 50% to ensure a safe viewing.