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What is CRI and why does it matter?

CRI stands for Colour Rendering Index. It is used to measure how accurately a light source shows an object’s true colour, when compared to the sun. The Index is made up of 15 colour bands – or ‘frequencies’ – that are visible to the human eye. It runs from zero to 100, with higher numbers demonstrating a better ability to render colours. arbn lighting has a CRI of 95-98.6, compared to the industry average of 80. No light source, not even the sun, would have a CRI of 100, so arbn lighting is as close to true daylight as it gets!

CRI matters because it enables us to see colours as they truly are, and this is extremely important for performing tasks within an array of different industries. From an operational perspective, high CRI lighting gives us an opportunity to generate energy savings, as it requires lower illumination levels and less light fixtures. It also gives us an opportunity to enhance internal environments for occupants, as most humans respond better to more natural light sources.

My lights are white – doesn’t that mean they have all the colours of the rainbow already?

No. In most white light, even those with a CRI of 80, some of the colour frequencies will either be missing or be very low. This is typical for shades of red, as the phosphor levels required to produce red from an LED chip are more difficult and more expensive to manufacture. arbn lighting’s manufacturer has overcome this following seven years of research, and can consistently and economically produce LED chips that return a strong result for each colour band.

A lot of lighting companies also only use nine colour frequencies to measure CRI, instead of fifteen, which doesn’t give an accurate reflection of the full colour spectrum.

I need pure white lights in my workshop but much warmer soft tones in other areas. Can arbn lighting do both these types?

The specific tone of white light provided by lamps is measured in Kelvin, and is therefore referred to as temperature. Typically this varies from 2700K at the warmest (or most yellow) end of normal lights, to 6000K for bright (or blue-white) light. Offices are usually fitted with 4000K, but in our homes and living rooms we would be more comfortable at 2700K.

arbn lighting can provide lamps at any temperature, all with the same high CRI of 95+. The lamps are specified by the fitting type, the output power in lux, and the temperature of the light provided. All of them provide full colour rendition, regardless of the temperature of the white light.

arbn lighting offers Internet of Things (IoT) connectivity which allows different lighting settings to be programmed collectively or for each individual lamp. Each arbn lighting fixture, enabled with our advanced IoT controls, can be managed, controlled and addressed individually through either Bluetooth or internet connection. This can be done either locally or remotely, through your smartphone, tablet, or computer.


How much energy will I save?

This depends on the type of lighting you are replacing. As a replacement for a conventional 38W T8 fluorescent bulb, our 18W LED arbn lighting has been proven to generate 45% savings.

To replace existing LED lights that have a CRI of 80, arbn lighting generates energy savings of 20% on average. This is due to its ability to operate at lower power, because it acts as a natural sunlight equivalent.

Full catalogue and spec sheets for comparison purposes are available on request.

What does 100,000 hours actually mean in my property?

arbn lighting guarantees its products for 100,000 hours, and can do so confidently because of the quality of manufacture. The LED coatings are set on a metal substrate, meaning that each cell is far more durable, and can operate without failure at a higher temperature for longer periods.

The industry leading warranty offered with our products is a full non-prorated guarantee for 100,000 hours, meaning that the customer does not have to cover any costs for replacement or repair within that period.

In normal commercial applications, our lamps will last for over 10 years without the need to change a bulb, whilst still maintaining the high standard of light quality and energy efficiency levels. Not only does this give customers one of the highest quality lighting products in the world, the high manufacturing standards will result in huge savings in labour and replacement parts.

Where can I use arbn lighting?

arbn lighting has been made available exclusively to the UK commercial market across the built environment offering both indoor and outdoor lighting.

The 95+ CRI indoor lighting solutions are available in a range of products including: T-Series Retrofit Tubes, LED recessed Troffer, Linear LED, LED High Bay, LED Wall Pack and Parking, and LED Light Panel products. The high quality lighting lends itself to all commercial industries, from retail to light industrial. The high quality lighting will have a marked improvement on the lighting in all properties.

The outdoor lighting is suitable for streetlights, car parks, and stadia with products ranging from 35W to 300W. The outdoor lighting is able to be integrated with intelligent motion sensoring, video surveillance cameras, plug and play wireless controls, solar powered and speaker and microphone integration.

I suffer from S.A.D. in the winter – will arbn lighting help?

Seasonal affective disorder (SAD) is a type of depression that comes and goes in a seasonal pattern. It is also known as “winter depression” because the symptoms can become more severe during the winter months.

Although the exact cause of SAD isn’t known, research has linked it to a lack of exposure to sunlight that affects the body’s internal clock, the circadian rhythm.

The configuration of our LED lighting system allows it to mimic the behaviour of the sun through solar sequence, following the proven daily cycles of our bodies.

This simulation of sunlight through our industry leading 95+ CRI combined with the configuration to replicate the circadian rhythm may help alleviate the common side affects caused by SAD. Studies have also found that enhanced lighting can help increase productivity and enhance comfort. Poor lighting can have a significant effect on concentration levels, productivity, and wellbeing in the workplace. Poor artificial light can trigger eye strains, migraines, and headaches.


How does the Internet of Things (IoT) configuration work?

Each lamp is fitted as standard with at least three-stage dimming at 100%, 50% and 25%, whilst maintaining 95+ CRI levels at all outputs.

The IoT element incorporates controls via Bluetooth and WiFi, allowing for wireless control of the installation through an app or smartphone. This integration allows each individual light fitting to be dimmed from 0 to 100% on a linear increment, providing the ability for each occupant to control the lighting at desk level through their smart phone.

The software also provides the ability to collectively programme whole areas or floors, providing a range of lighting for varying scenarios, or to collectively respond to demand side response for power savings.