If food looks more colourless in the kitchen light than in the supermarket, the colourful dress in the bedroom loses its colours or the face in the mirror looks unnatural, this is often due to poor colour rendering of the light source. Good to very good colour rendering is therefore part of living comfort, as colours only come into their own with a light source with a high colour rendering index (CRI) - whether in furnishings, fashion or dining.
What is the CRI value?
The Colour Rendering Index (CRI) indicates how natural the colours of an object appear when illuminated by a specific light source. Colour rendering is therefore a quality feature of a light source. A CRI of Ra 100 means a true-to-life reproduction of colours. Ra >= 90 indicates very good colour rendering, Ra >= 80 good colour rendering, which is ideal for living spaces and is the most common among modern LED lamps.
Buying light sources with a high CRI
It's so easy to convert to LED
LED lighting technology today achieves good to very good colour rendering values (CRI >=80), so that it is possible to convert from halogen technology to LED without hesitation. It is not necessary to do more than replace the bulb. The advantages of the new lighting technology, including a service life of up to 50,000 hours and energy savings of up to 90 %, are all the more sustainable.
FAQ: Frequently asked questions about colour rendering index
Where can I find the CRI data?
The colour rendering index (CRI) can be found in the product details of every light source in the Lampenwelt.de online shop.
How is the CRI measured?
With the help of measuring instruments such as the spectrometer, the CRI can be measured on the scale of natural daylight. This is done using 14 test colours defined in DIN 6169: 8 primary reference colours (old pink, mustard yellow, yellow-green, light green, turquoise blue, sky blue, branch violet and lilac violet) and 6 secondary reference colours (saturated red, yellow, green, blue, skin tones (pink) and leaf green).
The visible part of electromagnetic radiation from 380 nm to 780 nm is made up of various spectral colours. Natural daylight contains all colours. Light sources, on the other hand, have different light spectra. If a lamp emits a light spectrum with peaks and reduced intensities, the brightness is emitted unevenly to the colour palette. This overemphasises certain colours. If a spectral colour is missing completely, surfaces in this colour appear greyish.
The 14 test colours according to DIN 6169:
Where is a high CRI also important?
In addition to the home, good colour rendering plays an important role in healthcare, industry, graphic design and fashion shops, among others.
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The strike-through prices correspond to the manufacturer's RRP.
All prices include 20% VAT, delivery costs excluded.
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