Lighting. Friday , September 21st , 2018 - 19:15:52 PM
LED lights are a low-energy option for mains-powered lights. These eco-friendly products do not use mercury in their production and can last up to 100 times longer than incandescent globes. Although the initial cost is currently substantially higher than that of incandescent globes, as technology improves and demand grows, the number of manufacturers will grow and increase competitiveness and so prices will begin to drop to more affordable levels.
Lighting essentially determines color. Different types of light accentuate different areas of the spectrum: the red carpet viewed under cool fluorescent light with a heavy blue-green spectral distribution will look dull and lifeless, while it will look warm and vibrant under an incandescent fixture. Color selections by remote often lead to surprises because of the project site's specific orientation to the sun and lighting conditions. To minimize the problem of color shifts, it is imperative to view materials on site, under the lighting expected for the installation.
Now we can take the color of our light source that we are looking at and compare it with the Color Rendering Index (CRI). The CRI of a light source compares the color of the source to a Black Body color index of the same color temperature. The maximum Color Rendering Index number that is possible is 100. The higher the CRI of your light source the more natural colors will appear when illuminated by it. Light sources with a low CRI will distort the colors that are viewed with them.High (above 80) CRI is preferred in the home. ENERGY STAR requires that qualified fixtures have lamps with CRI above 80. Daylight and all incandescent and halogen light sources have a CRI of 100 and they are excellent at rendering color. For a warm lamp, the CRI is a measure of how close to incandescent color it is, and for a very cool lamp the CRI is how close to daylight it is. The lamps CRI should be listed in the Manufacture's literature.