21 04 2016

 

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Towards Human Centric LEDlighting

13 12 2015
The impact of light on our well-being has made us more aware of the different lighting solutions. By changing the intensity and colour temperature of light we can impact on mental alertness and comfort.

Non-visual effects of light depends critically on the intensity, the duration and the spectral composition of the light. Also the prior light exposure and the timing of the exposure determine the kind and size of the non-visual effects that can be achieved.

Human centric lighting is becoming more common. The new technology updates enable cost effective and user friendly solutions. Human Centric Lighting is the inclusion of visual and non-visual (biological) needs of humans in the design of lighting applications.

The lighting is changing quickly. For the new lighting projects is LED lighting today the best option. LED prices have dropped and the quality is improved.

Lighting can be used to increase the labor productivity, the welfare of the people, comfort and safety. You can also use new technologies to improve energy efficiency.

Light with a high spectral blue component activates and increases the capability for performance and concentration. If this blue component in light decreases, the body relaxes and changes over to a calm phase. Light control offers further positive effects on the human biological rhythm. It is able to improve motivation, the ability to concentrate and therefore productivity as well, and it provides ideal support with intellectual tasks.

George Brainard, the director of the Light Research Program at Thomas Jefferson University, hopes his research on how the colour of light is interpreted by our eyes will be able to get patients out of the hospital sooner. Maybe the order should be changed, so that millions of suffering people could benefit earlier from his findings as soon as possible.

Lighting the Learning Environments

The use of Human Centric Lighting is not only suitable for the medical-therapeutic sector, but also for school and office. It is, however, the only competent lighting design that enables the optimal utilization of new intelligent lighting solutions.

The newest way to school lighting is to move the teaching and the kids outdoors. Excellent experiences, especially from England and Sweden, have been made. If the outdoor learning is not possible one day because of the bad weather, education traditionally takes place inside the classroom.  However, ensure that the lighting inside is similar to the outside one, that is daylight simulating light, 5,500 K with high colour rendering index, over 90.

The school’s main goal is to get the pupils to learn. So the Human Centric Lighting is very important in schools. However, most of the schools are illuminated by a traditional, warm, tired light (mostly 3000-4000 K).

It has been known that the full spectrum of sunlight increases the reading speed  by up to 20%, and reduces eye fatigue. So daylight is the best option for schools.

According to the most recent studies, the daily outdoor activities may reduce the need for children’s short-sightedness eyewear. This article was provided by the Journal of the American Medical Association (JAMA).

 

The following is an extensive article, click the link:

Transforming Outdoor Learning in Schools

Good lighting design always meets the customer’s individual needs. My role is to provide the best solutions. With over 30 years of experience, I served thousands of satisfied customers.

Most of my clients choose a natural daylight for the interior lighting. If you have a lighting project for your work place or home, I would like to help you to get a modern, Human-Centric LED lighting.

However, you can also choose a solution, where you can choose the light colour from e.g. 2,700 to 5,500 K.

Before you read more, here is my new article from the housing fair in Finland, with many pictures about the human centric home LED lighting.

Spectrum is the most important thing to decide on the light quality. I prefer a 5,500 K continuous daylight spectrum, however, in the evening you could choose warmer light in order to sleep better.

Good daylight spectrum   11

Bad, non-continuous spectrum  fluorescent 1

Some benefits of human-centric lighting

To promote the safety of the working environment lighting and ergonomics.

More information about Human Centric Lighting:

 





Lighting ideas, which are suitable with T5 LED tubes

10 06 2015

Please contact the managing director of AD-Lux Oy, if you like to see the missing pictures in this article. He has  “destroyed” the pictures from the server. 

Since the origin of life, the light has guided us, our activities and our biological clock. We feel the best in the natural light outdoors, where intensity and color changes all the time. With dynamic light we can create better lighting with people in focus.

Lighting affects how we see our surroundings. Dynamic lighting for the future houses goes further, affecting impacting how we think and feel too.

The fact that blue light activate and warm light calms, in increasing substantiated, it is all about imitating the natural light and its variation that has controlled our biological clock since the origin of life.

Where do we apply solutions with color temperature control? The answer is: in any room with limited access to daylight or rooms where for any other reason want to be able to vary the color temperature.

Our preference for color temperature isn’t static, sometimes we want a cold, activating light, sometimes warm, relaxing light.

The biological clock, also called the circadian rhythm and plays an important role in regulating wakefulness and sleep. If we can help that clock, we can help people feel better. By designing good lighting systems, lighting can help increase concentration and motivation and to improve subjective and objective well-being.

The ideal is simply to imitate natural light, both in level and color during the day. Cold, intense light with a high blue is activating, warm dimmed light is relaxing.

Why daylight also inside the house? Lighting in home and work environment has the past decades been monotonously warm, yellowish and not showing colors correctly. A question arises: why? You have to try it to believe. We recommend you to test before moving to daylight because of the big difference from traditional lighting. Lighting and colors are a big part of the whole of living. They have an affect on functionality and comfort but also on atmosphere.

Goals of good lighting design human and eyefriendly lighting non-glaring result child- and firesafe lighting lighting that helps your seeing also with older eyes colours of interior are shown as they are overall economic and energy saving solution isn´t harmful to climate change

In the evening light could be warm-toned, ”more ambient” light, especially if light is not needed e.g. for reading. Finally you can turn off the lamps and light candles. Many people become so fond of daylight type light, that they want to have it all day long, also in the evening.

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Our preference for colour temperature isn’t static, sometimes we want a cold, activating light, others a warm relaxing one. Our preferences for light can also differ with age; the young are inclined towards a colder light while as we get older this changes to warm.

Lighting with modern led tubes is not expensive. This is because no luminaire is needed. Only lamp holder and wire to each end of the tube. The wire will be connected to 230 V and no ballasts are needed.

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Here are some examples of different rooms, where led tubes could be used.

Kitchen

Correct place of led strip under the cabin. in the front side of the cabin, the light should go to the direction of back wall.

Correct place of led lamp under the cabin is in the front side of the cabin, the light should go to the direction of back wall.  In this picture led strip is used but led tube is more economical.

One of the most important things to consider when choosing a kitchen hood is to get enough light on the stove. The lamp should not glare from the stove, which is normal with led or halogen spots. Better solution is led tubes, 600 mm.

Stairs

Excellent lighting of stairs, led strip.

Excellent lighting of stairs, T5 led tube.

 

Just get one wooden panel away and put opal plastic (3mm, 72 %) instead of it. And led tubes in 5 cm distance of the plastic panel. No other light is needed in the whole room.

Indirect lighing. Unfortunately the yellow color of the lighting destroys the colours of interior decorating..

Indirect lighting

 

Lighting with daylight led tubes. You could install on the other side also 3000 – 4000 K led tubes and put light there on the evenigs.

Good indirect lighting, but with daylight led strips you could get it even better.

Good indirect lighting, but with daylight led lamps you could get it even better. You can use 1-2 warm tone led tube ans use them only in the evening.

Wooden panel with led strips. Use full spectrum leds, 5500 K, it shows also the wood color original, not yellow like here.

Wooden panel with led lamp. Use full spectrum leds, 5500 K, it shows also the wood color original. You can use this solution in every room.

Valoa voisi olla hieman enemmänkin. (7)

Päivänvalovalaistusta voidaan himmentää.

 

Led tubes are  good solution here. You get indirect light.