Mount Rushmore Introduces Unique Lighting System

The more than two million visitors who travel to Mount Rushmore National Memorial each year will now enjoy an enhanced night time viewing experience, thanks to an innovative new lighting system with an LED light source that was recently installed at the memorial.

The new system accomplished this though several key features that improve efficiency and light control, including:

-Advanced optic controls that highlight the aesthetics of the monument, while ensuring light is not spilled into the night sky and natural wildlife area
-A custom control system that allows park rangers to precisely highlight each of the four presidents depicted in the mountainside carving, creating an even more inspiring presentation
-Reducing energy consumption by 90% when compared to the previous lights

Visitors will experience new opportunities to enjoy the night sky; focused lighting will enhance habitat for nocturnal wildlife; and enrich potential for new interpretive programming. The good lighting practices that have been initiated will result in energy efficiency, elimination of lighting spillover, enhanced visitor experience, and protection of cultural resources.

With the new lights in place, Mount Rushmore National Memorial has now joined other famed landmarks that also feature customized lighting systems, including the Washington Monument, the Statue of Liberty, the White House, and the East Span of the San Francisco Bay Bridge.

Excerpt from KDLT

New quantum dot hybrid LED is cost-efficient and color-effective

Light-emitting diodes (LEDs) are prevalent in everything from digital clocks to solar panels, traffic lights, electronic banners and signs, Christmas decorations, as well as smartphone and tablet displays. However, LEDs are created using organic materials that can be costly for researchers. The end result of the manufacturing process is that LEDs cost more for the consumer. While LED lighting systems last longer, are more energy-efficient, and provide an improved color gamut above that of fluorescent lights, the price is the technology’s greatest drawback.

A new, cost-effective quantum dot (QD) hybrid LED could enable LED lighting system adoption on a mass scale. University of Hiroshima (Japan) researchers created the new light-emitting diode using silicon quantum dot solution and a polymer solution on top of an indium-tin-oxide (ITO) glass ply that was used as the anode for the LED. The silicon quantum dot solution was placed in the bottom of a glass vial that sat on a rotating stage. It was synthesized through pulsed laser ablation (PLA) with Tokyo Chemical Industry Co.’s 1-octyne solution (10mL) over several eight-hour periods.

After the 1-octyne solution was removed and the silicon quantum dots solidified, they were then submerged in either 1) 2-propanol or 2) o-dichlorobenzene. “The color of Si QD solution is a transparent yellow but a white-blue PL is observed during the UV excitation,” the team wrote in its report.

The study is the first of its kind to produce silicon quantum dot LEDs by way of a solution-based process and marks an advancement of LED technology, seeing that the use of organic film as the electron transport in past LED production resulted in a decreased photoluminescence and an inaccurate color reproduction. The solution-based process described here was done at room temperature and pressure, resulting in a more cost-efficient process by which to manufacture LEDs. Fluorescent bulbs are cheaper than LEDs, with a box of fluorescent bulbs costing no more than a few dollars, but consume more energy and lead to higher energy bills. LEDs are more expensive up-front, with some costing as high as $70 a piece, but conserve energy and money later on.

Excerpt from extremetech

World’s thinnest light bulb

Scientists have created the world’s thinnest light bulb using the wonder material graphene, in a layer just one atom thick. Graphene a form of carbon  has been heralded as having a vast range of uses.

The ability for the super-thin material to produce light is seen as a key step to create super-thin computer and TV screens. The ‘bulb’ was created by attaching a small strip of ‘atomically thin’ graphene, acting as a filament, to metal electrodes. When they passed a current through it, the graphene lit up. James Hone, professor of mechanical engineering at Columbia University said: ‘We’ve created what is essentially the world’s thinnest light bulb.’

He added that the light ‘will pave the way towards the realization of atomically thin, flexible and transparent displays’.The filament, despite being tiny, is visible to the naked eye when it is on.The graphene reaches very high temperatures of  2,500°C but does not melt the electrodes because the ‘hot spot’ is restricted to the center of the filament.


Excerpt from Daily Mail


LED bulbs gain on CFLs in lighting market

Consumer choices in light bulbs for their homes have changed significantly over the past few years, and they appear to be doing so again.

Compact fluorescent lamp bulbs, the market leader since most incandescent bulbs were phased out in 2014, are gradually giving way to LED lights, those semiconductor devices best known for their use in traffic signals and electronic appliances.

A new survey commissioned by the lighting product manufacturer Osram Sylvania shows LED light bulbs gaining on CFLs as consumers increasingly buy them and find them preferable.

“LED awareness and use is changing,” said the company’s seventh annual “Socket Survey,” which was conducted earlier this year by the firm KRC Research. “While in past surveys LEDs fell behind other types of bulbs, the 2015 survey reveals that now more are aware of LED light bulbs and purchasing them for their homes.”

CFLs remain the bulb of choice for most consumers, despite complaints about their light quality (they illuminate gradually) and the small amount of mercury that they contain.

Fifty-three percent of those polled reported having bought CFLs for their homes in the past year, compared to 41 percent who had purchased LED bulbs.

But survey results also indicate that CFLs may lose that lead in the not too distant future. The spiral lights were the preference for 37 percent of the respondents when they buy bulbs again, with LED lights were just behind, at 35 percent.

Among non-LED users, CFLs are the top choice for replacement bulbs (45 percent), with only 18 percent indicating they would purchase LED bulbs an alternative. However, among LED users, 44 percent would most likely buy LED bulbs again.

“This indicates a loyalty to LEDs once Americans are a user, but hesitation at initially switching,” the survey said. “One possible explanation for this hesitation to switch to LED bulbs could be price – nearly one of three of non-LED users do not think the initial cost of LED bulbs are worth it.”

Interest in LED lights is likely to grow even more as consumers look closer at the efficiency and expected lifetime of the bulbs compared to CFLs and those disappearing incandescent bulbs.

Government statistics put the annual cost of using a 60-watt-equivalent LED for three hours a day at $1.02, compared to $1.57 for a CFL and $7.23 for an incandescent bulb.

It all adds up, especially when you consider that LEDs are expected to last years longer than CFLs.

Excerpt from USA TODAY

What are Lumens?

Think of lumens as a “new” way of knowing how bright a lamp is. Lumens = Light Output.

In simple terms, Lumens (denoted by lm) are a measure of the total amount of visible light (to the human eye) from a lamp or light source. The higher the lumen rating the “brighter” the lamp will appear.

We have all bought 50W or 60W conventional bulbs or spotlights in the past expecting a certain level of brightness. This incorrectly linked power consumption (Watts) to light output.

More light, less energy (Watts) with LED

With low energy LED lamps, more light output can be achieved with much less power consumption. For example, a 6.5W LED lamp will give a similar light output to a 50W Halogen bulb. That’s 87% less energy for the same light output! When using LED more energy is converted to light rather than heat. As technology improves, more lumens will be produced using even less Watts – i.e more lumens per Watt. So as a result, using Watts as a guide to brightness is no longer relevant.

Lumens – Conventional v LED lamps

To achieve the same light output of a 60W conventional bulb you will need an LED lamp with around 800 – 850 lumens. All Integral LED lamps have the lumen rating clearly marked on the packaging and on the lamp base . We also provide a conversion guide to the “old wattages” on the pack  e.g. 11.5W LED =  60W conventional. Below is an approximate guide to help you decide the lumen rating for your LED replacement lamp.

Lumen Light OutputLumens and Useful Lumens

For non-directional bulbs such as a globe, golf ball or candle shape, the total lumen output is calculated for all directions. With a directional bulb such as GU10 spotlight, the light is emitted in many directions, some of this light (spill light) may not be useful but it is counted in the total lumen rating.

Useful LumensTo make comparisons fairer and easier the EU has recently introduced a “useful lumens” rating. This is a measurement of useful light emitted in a standardized 90 degree cone (see image). The “useful lumen” rating is normally lower than the total lumen output but has more relevance to a spotlight bulb where useful light is in a forward focused direction.

Old Watts Approx Lumens
25 W  230 – 270 lamp
35 W 250 – 280 spotlight

200-300 Useful Lumens (spotlight)

390 – 410 lamp

40 W 440 – 460 lamp
50 W 330 – 400 spotlight

350-450 Useful Lumens (spotlight)

60 W 800 – 850 lamp
75W 1000-1100 lamp


How many lumens do I need?

There is no firm answer – it will depend on a number of factors including; room size and shape, height of ceilings, colour scheme, type of lamps & fitting, task areas and needs of the user.

As a basic guide; below are the lumens required per Sq M (10.76 sq ft) for different room settings. In many cases a mixture of general and task lighting will be required.

Area Lumens/Sq M
Kitchen 300-400
Kitchen (Task) 700-800
Living Room 400-500
Hallway 300
Bedroom 300-400
Bedroom (Task) 700-800
Bathroom 500-600
Bathroom (Task) 700-800
Reading Area 400

You won’t believe it’s not Halogen!

The GU10 LED lamp you have been waiting forThe LED bulb that performs just like Halogen.

Using innovative optics and reflectors Integral LED have developed a GU10 lamp that performs just like Halogen in terms of light distribution, colour and overall look but with the energy saving and durability benefits of LED. The low-glare design improves on Halogen bulbs and looks great both ON and OFF.

The Integral LED Classic Glow GU10 overcomes the concerns of consumers that want to switch to LED as they will be able to enjoy a better performing, more efficient product that matches the aesthetics they are comfortable with whilst saving more than £6 per bulb, per year on energy.

The Classic GlowCGlow_Banner-500x360 is the ideal product for domestic and commercial use. The lamp is available in two colour temperatures; warm (2700K) and cool (4000K) both with dimmable options. As part of our commitment to quality, Integral have engineered the Classic Glow GU10 range using a premium OSRAM LED chip, high quality optics and advanced thermal management

Integral LED awarded Which? Best Buy for GU10 LED bulb

After rigorous testing against many of the big name brands, Which? has awarded a Best Buy (Spotlights) June 2014 to;

GU10 PAR16 5.3W (50W) 3000K 370lm Non-Dimmable-Lamp

This 5.3W retro-fit Integral LED GU10 delivers a warm white light and brightness, similar to a 50W halogen bulb. It features quad high output Everlight LEDs, an anti-glare refractor, all finished in an aluminium and plastic, thermally efficient body. The ideal lamp for commercial and home use.

  • Warm White
  • 350 Useful Lumens (370lm Nominal)
  • Non-Dimmable

Upgrade your spotlights with confidence. The Integral GU10 LED spotlight is a perfect replacement for inefficient 50W Halogen lamps – reducing electricity bills by up to 85% instantly.


The retrofit LED bulb you have been waiting for

The OMNI-Lamp range delivers all the things you like about conventional lamps such as shape and wide beam, but enhanced with ultra-low running costs and a long life span.

Using the latest breakthrough LED technology, Integral LED have done away with the heavy heat sinks and restricted beam angles of current LED lamps and have produced a highly efficient A++ energy rated product with super-wide beam angles of up to 330 degrees, low heat output and a lifespan of up to fifteen times longer than an incandescent bulb. The OMNI-Lamp will look good anywhere on its own or in chandeliers, table, wall, and floor lamps – all at an affordable price.news_banner-250x180-Omni-Classic-B22-and-Candle-E14-Filament

How to choose your LED bulb

Replacing your current bulb with LED is as easy as well, changing a bulb. Integral LED produces a range of retrofit lamps that will fit right into your existing lamp socket so you can begin to save money immediately. In most cases you can retrofit a like-for-like LED bulb with the same base fitting, similar shape and light output. When choosing an LED lamp there are a couple of extra choices to make on dimming and light colour.#


Depending on the fitting, you would normally replace your bulb with an LED bulb of the same shape.

  • Image4Classic Globe – One of the most popular types also known an “A / A60 type” or GLS lamp . Used in ceiling fittings and in table, wall and floor lamps
  • Mini Globe  – Fitted in table, wall and floor lamps, also known as “G or P45″ type”
  • Candle – Ideal for chandeliers and and wall lamps, also known as “C or B35 type”  There is a choice of clear or frosted (opal).
  • Spotlight – PAR16 also for ceiling fittings


A lamp with the correct fitting base needs to be selected. Bases are not interchangeable.


  • B22 – Popular large “Bayonet” –  push-and-twist, 22mm in diameter- found in many ceiling fittings in the UK
  • E27 – Large screw (Edison), 27mm in diameter – widely used in ceiling, table, wall and floor lamps.
  • E14 – Small screw (Edison), 14 mm in diameter – many uses including  table, wall and lamps.
  • GU10 –  Bi-pins (10mm apart) twist-and-lock fitting found on 240V spotlights – Be careful not to confuse this with the low-voltage (12V) MR16 push-fit spotlight fitting
  • MR16 – This is a bi-pin push-fit spot lamp used in 12V low-voltage spotlights circuits – that includes a transformer and possibly a dimmer. This and other technicalities presently makes developing a reliable and universal LED solution difficult.


Dimming LED

Making the correct choice is very important.  Using a non-dimmable lamp with a dimming circuit can damage the lamp and or the dimming circuit.

  • Dimmable – with compatible dimmers. Can be used with non-dimmable circuits.
  • Non-Dimmable – Must be used with a non-dimmable circuit only.

Dimming LEDs with installed dimmers designed for higher-load  filament lamps can present issues in some cases.



The choice is a matter of preference and use. Light colour is denoted in Kelvin (K).  Click on a link to see all products that match a colour temperature.

  • Warm White – 2700K to 3000K  – If you prefer yellowish light closer to traditional lamps. Warm white is the most popular choice for the home. 2700K is close to a filament lamp
  • Cool White – 4000K to 5000K – If you like a clean, modern, blueish light, mainly used in commercial, retail, kitchens, bathrooms and contemporary areas. Mostly available as spotlights.

LIGHT OUTPUTLumen Light Output

Measuring a light output by Watts no longer applies, as LED uses far fewer Watts to generate the same light output. For example a traditional lamp of 60W can be replaced by an LED lamp of only 6.5W.  Lumens is a “new” way of denoting how much light is visible from a lamp. The higher the lumens the brighter the lamp will be.

Below is an approximate guide to help you decide on the lumen rating for your LED replacement lamp.

Old Watts Approx Lumens
25 W  230 – 270 lamp
35 W 250 – 280 spotlight390 – 410 lamp
40 W 440 – 460 lamp
50 W 330 – 350 spotlight
60 W 800 – 850 lamp

You can use our product search to quickly find the right product by using the filters on the left.

Warm White or Cool white?

Colour Temperature – With conventional lamps, choosing the “colour of light” emitted by a lamp was not a choice that was generally made. With some LED products, there is a choice of colours, choosing a colour will set the mood of your space.


Correlated Colour temperature (CCT) in lighting describes how the colour of the light appears from a lamp, measured in kelvins (K).

 Imagine a scale from 1000K (very red)  to 10,000K (very blue)  (actual scale is wider).  The higher up the scale you go, the closer the light resembles blue daylight.

Confusingly, colour temperature does not describe the actual temperature of the lamp itself but the colour it produces and counter intuitively; the higher the colour temperature the “cooler” a lamp will look.

elvins Type
1,000K Candlelight Red/Yellow Very Warm
2,700K-3,000K Conventional Lamp – Yellow Warm White
4,000K-5,000K Halogen/CFL – Blue Cool White
10,000K Blue Sky – Blue Very Cool


Put simply, colour temperature is based on how the colour of a heated metal changes as its temperature is increased – turning from red to yellow then blue.  You can then determine the temperature of a heated metal by its colour.  This range of colours at different temperatures has become useful for describing the colour tint of white light.  The colour of light from an LED lamp is approximated or “correlated” to this scale.

Integral_LED_Warm_vs_Cool_Bedroom_lightingWarm white or cool white?

There are no rules – the choice is about personal preference and use. If you like the traditional yellowish colour of a conventional lamp then warm white around (2700-3000K ) would be the ideal choice, this is the most popular choice for homes. If you want a modern, clean look, you may prefer the cleaner, brighter feel of a cool white lamp (4000-5000K).

Where can I use them?

Below are some common areas where the different colours are can be used:

  • Warm white – living room, bedroom, hallway
  • Cool white – kitchen, study, bathroom, cupboard, office, retail

Mix and Match

There is no reason why you could not have a mixture in the same setting. For example, warm white for the main room lighting and cool white for task lighting over work areas.