Lighting. Saturday , September 22nd , 2018 - 10:52:25 AM
Improvements in the color rendering of standard cold white fluorescent lamps have given rise to a wide range of products such as full spectrum, deluxe warm white and cool white light bulbs. Additionally electronic ballasts now allow easy dimming while alleviating the issues of lamp flicker, making fluorescents a more attractive lighting option. With their efficient light output and low cost, they remain the most economical way of providing uniform, shadow frees lighting over an extended period of time.
Advances in lighting products have enabled designers to create more dramatic interiors that are responsive to the functional needs of the user. A successful design can modulate the quality and quantity of light to address the users' psychological and physiological needs. Indeed, lighting is one of the most powerful elements of interior design. It is the Rosetta Stone that allows our eyes to see and interpret the world around us: without which will be a built environment devoid of color, contrast, and interest.
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.
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