We now have on-shelf stock of new LEDVance LED Downlight from Osram in all 3 outputs: 14W, 25W, and 35W. 

Product benefits

• High luminous efficacy
• Direct replacement for compact fluorescent lamp downlights
• Energy savings up to 60 % (compared to luminaires that use CFL lamps)
• Very homogenous light
• Functional design
• Easy installation with fast connection
• External driver for extended flexibility (compatible with selected DALI drivers)

Areas of application

• Direct replacement for luminaires with compact fluorescent lamps
• General illumination
• Public areas
• Stairways
• Corridors
• Foyers
• Shops

Product features

• Diameter of required ceiling cut-out: 150 mm or 200 mm (depending on version)
• Type of protection: IP20

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The pilot deployment uses miniature video cameras mounted on the luminaires to monitor parking spaces

THE CITY of Helsinki has installed internet-connected street lights which find motorists a parking place.

A micro camera from Super Circuits similar to the ones deployed in the Helsinki smart parking experiment. The increasing miniaturisation of video cameras means they can easily be incorporated in both outdoor and indoor lighting. Manufacturers say that as prices fall, they could replace passive infra-devices so that, for instance, instead of knowing if a meeting room is occupied, as a PIR can detect, a video camera could be used to determine exactly how many people are present.

The small-scale experiment is designed to prove the concept of so-called ‘dynamic smart parking’, and was developed by a consortium comprising of Philips Lighting, the Finnish capital’s innovation unit Forum Virium Helsinki and the Swiss parking specialist Parquery.

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Lux reports: These LED retrofits are designed as energy saving replacements for the original tungsten halogen filament lamps.  The AR111 filament lamp is usually 12V and, unsurprisingly, 111 mm diameter.

The lamps reviewed here are designed specifically as retrofit. I.e. they have an integral driver in the base. There are some LED AR111 suppliers whose lamp is only supplied suitable for luminaires with a dedicated, remote driver.

The reason for developing a large diameter reflector lamp was to achieve a tightly controlled beam which could be used for display lighting. Having a 12V filament meant you had almost a “point source” in terms of optics.

These LED replacements, therefore, need to have a good quality beam (no hot spots or striations) and excellent colour rendering. All the lamps have a CRI >80. We asked for lamps with a beam between 20° and 40°. Display lighting often requires a very narrow beam and you should check what is available from the manufacturer.

When we refer to a beam angle, we mean the total width at which the intensity is half the peak. E.g. a 40° beam is a cone of 20° around the central axis. Some manufacturers quote the angle either side of the axis. This makes the beam seem to be half the width it actually is.  Labelling regulations say that the packaging should quote the lumen value inside a 90° cone. This is known as ‘useful luminous flux’ and should be marked on the box.

In order to test the colour quality, we sent the lamps to the laboratories at University College London for independent testing and comparison. Thanks go to Peter Raynham, the course director of the MSc in Light and Lighting and Janine Stampfli, the MSc student who conducted the testing.

The LED lamps were compared with a 75W AR111 halogen filament lamp and the CIE CRI and TM-30 Indices.

One final point: you need to check that the retrofit lamp will physically fit inside the luminaire. There have been some cases where the LED version is too large – this is often caused by the size of the heatsink.

Summary

It is interesting to see that the CIE CRI Ra which is based on eight pastel colours gave a good indication of colour rendering compared with the much more detailed and informative IES TM-30 which is based on 99 colours of all shades and saturation.

The Colour Vector Graphic is much more useful because you can easily see the deficiencies and strengths compared with the reference source even though it doesn’t have any numbers attached to it.

One last point that is often forgotten is that the only reason incandescent lamps have a CRI of 100 because they are also used as the reference source. Apart from its familiarity, you wouldn’t really want a light source so deficient at the blue end of the spectrum.

Crompton

This lamp has a nice looking beam with soft edges. Like another of the lamps reviewed, about 8% of the light falls outside a 90° cone. This means you get a bright centre with extra light for the ambient surroundings.

In appearance, there is an attractive outer rim with cooling “ribs/fins”. This spoilt somewhat by the central frosted plastic moulding where the 12 yellow LED chips can clearly be seen.

3 STARS 

LEDVANCE

This Osram lamp from LEDVANCE most probably gives the nicest beam. It is uniform from the centre to the edge with no sharp cut-off.

The aluminium reflector is quite shallow and, like the other lamps, has diamond shape facets. The front of the lamp is completely sealed by a clear plastic lens. This has the advantage that the reflector would stay clean throughout its life.

5 STARS 

Megaman LED Reflector

This has a facetted aluminium reflector with a clear prismed plastic cone in the centre to direct the light.

We tested the 48° version and the centre of the beam is nice and clean. However, the overall beam is very wide with 15% of the lumens being emitted outside 90°.

3 STARS 

Philips Master LEDspot

This is a nice looking lamp and the front face looks almost exactly like the filament version. The concave reflector looks metallic although it is actually heavily prismed clear plastic. There is also a clear conical prism directly above the light source.

The beam is uniform from centre to the edge and there is only the slightest wooliness to the cut-off.

Soraa Vivid

When I asked one well-known lighting designer which AR111 she specifies, she simply said “Oh, I just go straight to the top and specify Soraa”.

One aspect of Soraa lamps that designers particularly like is the range of snap on lenses. These can be used to adjust the beam width or change the colour temperature, CCT and can be done easily even after installation. If the layout of the shop changes, you can simply use another snap on lens.

Verbatim

As mentioned in the introduction, you need to check that the retrofit LED lamp will physically fit the luminaire. Verbatim are proud of their optimised thermal design which means it is shallower in depth than many other lamps.

It is also the most realistic looking lamp. There is no front cover, the reflector is all aluminium and there are no plastic mouldings in the centre. The beam is also good with no unevenness.

5 STARS

Test results

Visit Novel Energy Lighting to buy these brands of LED AR111 at very competitive prices!

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Zumtobel will design and develop the lighting across the 61,000-seater ground in White Hart Lane, north London

Lux repots: ZUMTOBEL has won the prestigious contract to supply lighting for Tottenham Hotspur’s new £800 million stadium.

The company will supply the lighting to a design by independent consultants Buro Happold across the 61,000-seater ground including player facilities, seating bowl, circulation concourse and the extensive façade.

The multi-million pound contract is a major coup for the group and part of a wider trend of design-and-supply arrangements with single manufacturers for major infrastructural projects.

Scheduled to open in 2018, the venue will also play host to NFL American Football games, music concerts and a range of other events.

Zumtobel will also supply sister brands, including acdc, Reiss, Thorn and Tridonic.

Tottenham Hotspur’s director of operations Matthew Collecott told Lux: ‘Zumtobel has extensive expertise when it comes to illuminating stadiums and realising large and complex projects. We’ve every confidence in their ability to deliver a world-class lighting system as part of one of the most atmospheric and technologically advanced stadiums in the world.’

Thorn, a brand of the Zumtobel Group, was responsible for lighting the Wembley Studium in London, the Geoffroy Guichard Stadium in Saint Étienne, the ‘Stadium of Light’ in Lyon and the Alliance Riviera Stadium in Nice for the 2016 European Football Championships in France.

The stadium has been designed by architects Populous working in conjunction with Allies & Morrison and Donald Insall Associates and is being built by main contractor Mace.

Novel Energy Lighting supplies the full range of Zumtobel’s Thorn Lighting products. Contact us today to discuss your project requirements. Tel: 0208-540-8287, sales@novelenergylighting.com

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The metal halide lamps at Centre Court had inherent colour shift – and couldn’t be switched on instantly

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The ambitious plan will make the company the first grocery retailer in the UK to power all its supermarkets entirely by LED.

Sainsbury’s is to add Internet of Things capabilities to its lighting in an ambitious plan that will see all of its stores become 100 per cent LED by 2020, the retail giant has announced.

Sainsbury’s sustainability chief Paul Crewe says  customers expect the retailer to do the right thing on their behalf. ‘They can be reassured that, day or night, when they visit a Sainsbury’s supermarket, we’ve made a significant in-road into creating a greener supermarket for them.’

The lighting retrofit also opens the door to future digital collaboration between the two companies.

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LED makes grass on Bundesliga football pitches ‘healthier’

The RheinEnergieStadion, home of FC Köln, on match day. The club is using a mobile frame kitted out with colour tuned LEDs to help the grass recover quickly from games.

The Greenkeeper LED system in action at the FC Köln ground. Coloured LEDs are used to help spur grass growth.

A wheeled lighting frame stacked with LEDs is being used to improve grass conditions at leading German football club FC Köln (FC Cologne).

FC Köln, which holds a prized place in the German Bundesliga, is using a mobile LED light structure that can move around the team’s training and match pitches beaming LED light onto the field.

The club hopes that the LEDs will speed up the turf’s recovery after taking a bruising during a match.

The areas in front of the goals see a disproportionate amount of traffic during a match and therefore need more treatment from the LED lighting.

The team has found that the system leads to grass filling in gaps damaged by play much more quickly than with the older system. Meanwhile, the LED sources are delivering energy savings at the same time.

Hennef, Germany-based Rhenac GreenTec AG developed the LED lighting system, named Greenkeeper, which uses Tina2 optics from Finland-based LEDiL Oy to deliver the required beam pattern.

The frame uses mainly red LEDs with a smaller number of blue LEDs to cover the well-documented chlorophyll absorption peaks of plants. Furthermore, the system includes an integrated infrared heating system to approximate ideal grass-growing conditions, as reported in LEDs Magazine.

FC Köln has found that the LED system delivers six times more light to the playing surface relative to the older HID system. And the mobility enables the pitch crew to move the system into areas that require extra attention.

Evidence gathered from numerous trials, taking place around the world, seems to prove that plants and crops grown using LED light sources, with spectrums tuned specifically to the individual plant or crop, will not only grow faster, but will generally be healthier and provide greater yields – something that bodes well for the future of the LED lighting industry.

A revolution is happening in horticulture. It’s a seismic shift that will change fundamentally how we grow plants – and it’s all down to lighting. Lux’s Horticulture Lighting Conference

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Acuity is making a major investment in Internet of Things technology.

Many think that the Internet of Things is the future of the lighting industry. The ability of sensors planted in light fixtures to collect data, is also crucial too.

The company is hoping to expand its catalogue of IoT offerings, by bringing luminaires and building management controls together.

IoT sensors implanted in LEDs have the ability to collect analytical information on the behaviour of the people that use a building, offering information on how long people stay in a room, for example, and during what hours of the day.

Acuity has devised software that  will offer an array of capabilities, including indoor positioning, asset tracking, space utilisation, spatial analytics and energy management.

The company unveiled its new product, Atrius, at Lightfair in Philadelphia, which, the firm hopes will advance Acuity’s IoT products, making them much more sensory.

‘Lights are installed throughout most of our indoor and outdoor spaces. In addition, lights are powered and connected, and with the emergence of LED lighting, they now feature onboard intelligence.’

Greg Carter, vice president and general manager of Atrius

The product can help employees find available meeting rooms, empower travelers to navigate busy airports, guide shoppers to a specific product on a store shelf or permit a retailer to receive an alert that a customer needs sales assistance.

‘Lights are installed throughout most of our indoor and outdoor spaces. In addition, lights are powered and connected, and with the emergence of LED lighting, they now feature onboard intelligence,’ commented Greg Carter, vice president and general manager of Atrius.

‘That’s why we believe LED lighting is the best and least expensive infrastructure for delivering a sensory network that feeds IoT platforms to connect systems, spaces and people.’

Atrius IoT applications utilise LED lighting infrastructure rather than requiring additional equipment like stand-alone beacons or dedicated IoT networks, bringing a faster return-on-investment.

As IoT technology improves, upgrades are simple and cost effective. Further, the conversion of conventional lighting to LED lighting can provide the energy savings to help fund evolving IoT capabilities.

acuity brands · connected lighting · indoor positioning · internet of things · iot · Novel Energy Lighting · spatial analytics

The subjects who received sufficient light – either daylight or artificial – to stimulate their body’s natural sleep-wake cycle, or circadian rhythm, were able to fall asleep more quickly at bedtime, and experienced better quality sleep.

Office workers who receive bright light in the morning have better sleep and lower levels of stress than those who receive low light levels, scientists have discovered.

The subjects who received sufficient light – either daylight or artificial – to stimulate their body’s natural sleep-wake cycle, or circadian rhythm, were able to fall asleep more quickly at bedtime, and experienced better quality sleep. They also reported lower levels of stress and depression.

The finding was consistent during both summer and winter. The scientists, working at the Lighting Research Center at Rensselaer Polytechnic Institute in New York state, recorded each subject’s daily circadian stimulus or CS, the calculated effectiveness of light’s impact on the circadian system. It ranges from 0.1, the threshold for circadian system activation, to 0.7, the response saturation.

The team, led by  Dr. Mariana Figueiro, found that office workers receiving a morning CS of at least 0.3, regardless of source, had stronger circadian rhythms, than those receiving a morning CS of 0.15 or less.

At bedtime, participants receiving low CS lay in bed for approximately 45 minutes before they could actually fall asleep, which can lead to reduced sleep duration for those with a fixed wake time.

The study included 109 participants at five office buildings across America. Each study participant wore a Daysimeter, a research tool developed by the LRC in 2004, and used in frequent studies to measure the amount of CS a person actually receives, along with their activity patterns. Each participant was asked to wear the Daysimeter as a pendant for seven consecutive days during data collection periods in winter, between December and February, and again in summer, between late May and August. Data collection was conducted between 2014 and 2016.

‘Our study shows that exposure to high CS during the day, particularly in the morning, is associated with better overall sleep quality and mood scores than exposure to low CS,’ Figueiro told Lux. ‘The present results are a first step toward promoting the adoption of new, more meaningful metrics for field research, providing new ways to measure and quantify circadian-effective light.’

‘We are supporting this type of research so we can learn more about the connections between lighting and health,’ said Bryan Steverson with GSA. ‘The data from this research will help support our efforts in developing new lighting practices that can optimize health benefits for federal employees working in our federal buildings.’

The results will be seized on by proponents of so-called human-centric lighting, in which artificial lighting levels and colour are manipulated during the day to better harmonise with our natural circadian rhythms.

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LED highbays installed at the Wembley and Aylesbury maintenance depots delivered a 67 per cent and 48 per cent saving in energy consumption respectively.

 

A mix of LED amenity, street and area lighting products were installed to deliver optimum illumination at Chiltern’s Wembley station.

The Arriva owned company has updated the internal and external lighting at three major stations, Wembley, Aylesbury and Stourbridge in the south of the UK.

Energy-intensive 400W highbays at the Wembley and Aylesbury maintenance depots were replaced with hooked LED highbays in a range of wattages and a sustainable, higher efficiency, longer lamp life replacement for traditional 2D bulk heads, was installed in the staff shower and toilet facilities at Wembley.

The offices on both sites were kitted out with ultra slim ceiling panels that deliver high performance and attractive LED lighting. Fluorescent tubing has also been removed and replaced with highly efficient non-corrosive LED fittings, to act as a lower energy consumption alternative.

The LED highbays installed at the Wembley and Aylesbury maintenance depots delivered a 67 per cent and 48 per cent saving in energy consumption respectively. Both sites also realised a further 64 per cent reduction in energy usage thanks to the new ceiling panels.

A mix of LED amenity, street and area lighting products were also installed to deliver optimum illumination in a number of outside areas, including pathways around and access roads to the railway tracks.

A further thirty flood lights were installed to illuminate the tracks at the Stourbridge site and another 285 replaced the legacy 40W twin CFL lights along the pathway running adjacent to the railway track at Wembley.

In all three locations, this provided Chiltern Railways with a low power, high quality LED replacement for the incumbent energy-intensive flood lighting.

Emergency lighting at Wembley which had proved to be problematic, was also upgraded.

At Stourbridge, replacing the energy-intensive legacy lighting alongside the tracks with flood lights resulted in a 62 per cent reduction in energy consumption. Furthermore Chiltern Railways will achieve an average 61 per cent reduction in CO2 emissions.

In addition, Chiltern Railways no longer has to factor in time or budget for maintenance. Chiltern Railways estimate they will benefit from a further reduction in spend of around £10,000 per annum, the amount it previously cost to maintain the lighting infrastructure.

Another benefit has been a dramatic improvement in the quality of light. The external areas are now brighter, more secure and offer safer working environment for the company’s employees.

The superior uniformity of light and improved illumination within the offices, has also been well received by Chiltern’s staff.

Visit us at www.novelenergylighting.com to explore our range of LED high bays, LED Bulkheads, and LED Floods, or call us: 0208-540-8287

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