What is CRI

What is CRI

With LED lamps you often also see the color rendering or CRI / RA mentioned. For many an unknown value, but certainly not unimportant. We are happy to explain what CRI is.

In a store, it often happens that people with clothing or accessories walk outside to see the color well. This is a good example of what CRI means. The light outside has a CRI of 100, this is the highest attainable. In this case, lamps with a low CRI value are hanging in the store, as a result of which the colors do not appear as they actually are.

COLOR RENDERING INDEX

CRI stands for Color Rendering Index. This index shows the extent to which you see the actual colors of objects in the light of a lamp. The CRI is expressed in a number between 0 and 100 Ra. Daylight (outside light) gives the colors the best weather, this is also light with a CRI of 100 Ra. The higher the CRI of a lamp, the better and more faithfully you see the colors. With older energy-saving lamps you will also come across a CRI of 60 Ra and this value is also often low with older LED lamps. Many LED lamps now have a CRI of 80 Ra, but 90 Ra is also becoming more common. LED Lamp offers various LED lamps with a CRI of 90 Ra.

REFERENCE COLORS

The CRI of a lamp is determined by measuring the color rendition of eight reference colors. These eight reference colors are illuminated by the lamp and compared with a reference light source. The average of these eight outcomes determines the CRI. It can, therefore, happen that a lamp with a high CRI on certain color scores is less than another lamp with a comparable CRI. It remains an average of the eight colors. Of course, the following applies: The higher the CRI, the better the color rendering of the lamp.

APPLICATION

For applications in and around the home, lighting with a CRI of 80 is often sufficient. If you want to highlight something, for example, a painting, then it is better to choose a light source with a higher CRI in order to bring out the colors nicely. Lighting with a high CRI is also of great importance for stores. With this, customers can also see the colors in the store and they no longer have to walk outside with products.

Below an image to show the effect of a higher CRI.

ADVICE

If you have any questions about the correct application of LED lamps in your home, office or store? Then contact us via e-mail, telephone or live chat. Our team of LED specialists is ready to answer your questions on workdays from 8:00 AM to 8:00 PM.

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