€ 10.15 VAT. 25.5%
Suspended ceiling LED light fixture — DOUGHNUT for office 50W
temporarily out of stock
SKU#: Doughnut
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LED DOUGHNUT dimmable pendant light for the office, living room or even on a large kitchen table in the home or leisure apartment. This luminaire is a real eye-catcher.
- 5000 lumen
- illuminates directly downwards without shadow
- length adjustable wire ropes
- powder-coated aluminium
- to the office
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€ 703.41
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Right of return for 14 days
- Delivery status Out of Stock
- Brand Ledstore
- Breadcrumbs Home Led LightsDecorative Led LightsLED suspended ceiling lights Suspended ceiling LED light fixture — DOUGHNUT for office 50W
- Category LED suspended ceiling lights
- SKU Doughnut
- Lumen 4500
- Photograph from No
- Wireless No
- Direction No
- Transformer type No
- Profile type No
- Accessories No
- Polymium strain No
- Size 80mm height, diameter 900mm. Wire lenght 1500mm
- Wattage 50
- Colour rendering (CRI ±3) 85
- IP class IP21
- Adjustability No
- Chainable No
- Guarantee (year) 3 years
- Life span 35000
- Installation method Hanging
- Format Round
- Installation level No
- Approval CE, RoHS, IP21
- Designed in Finland No
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WHAT IS CRI, THE COLOUR RENDERING INDEX
High quality LED lights also have a high colour rendering index, or CRI. A good colour rendering index (CRI) for home use is above 90, and nowadays many market lights are unfortunately closer to 80.
CRI tells you how well an LED light displays colours as they should be. For designers and architects, as well as interior designers, it should be one of the most important considerations. Make sure the lighting is perfect so that your artwork is what it is meant to be.
Colour rendering index
The colour rendering index is expressed as a number on a scale from zero to 100, where 0 = no colour rendering and 100 = full colour rendering. The colour rendering index of LED lights is also known as Ra, which is measured on a smaller scale than CRI. This Ra value does not include red tones or skin tones, for example, so it is a 'glossed' figure for the true quality of an LED light.
RA value
The Ra value measures the reproduction of colours using eight different reference colours. CRI takes into account the wider (15) wavelength range, including reds and other warm colours.
The Ra value is calculated by cutting the wavelength range, weighting the blue and violet tones, and calculating the weighted average of R numbers 1-8.
Excluded from the Ra value are, for example, the colour rendering of bright reds, yellows and greens, and shades close to skin tone. These are described by R-values between 9 and 15. The following is a picture of a measurement result that easily confuses the consumer.
This measurement is from a 9W CCT Led spot
Read more on this topic:
Colour rendering of LEDs - What is the difference between CRI and Ra-value?