All daylight lamps are not “full spectrum”

6 01 2010
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The term “full spectrum light” is widely misused. All daylight lamps are not full spectrum lamps. Already the price indicates, if the lamp is full spectrum or not.
Here is a comparison of three daylight lamps. All lamps should be full spectrum – at least the manufacturer tells so. There are big differences in the spectrums of a non-full spectrum and a full spectrum lamp. However, the spectrum of a non-full spectrum lamp is better than by standard 3-band lamp.
The upper spectrums are measured by OPL “Pocket” Diffraction Grating Spectroscope and the lower spectrums by Project Star  Spectrometer.  Energy class also tells about the quality of the light. Class B has a more continuous (better) spectrum and lower lumens.
Androv energy saving lamp, 32 W, 1600 lumens, 6000 K, CRI 95, 10,000 hours. Required energy class is missing (may be A).
“Daylight” energy saving lamp, 11 W, 600 lumens, 6500 K, CRI 85, 8,000 hours. Energy class A.
Viva-Lite energy saving lamp, 32 W, 1400 lumens, 5500 K, CRI 97, 12,000 hours. Energy class B.
Androv energy saving lamp. The spectrum indicates that it is not high quality full spectrum lamp.
“Daylight” energy saving lamp. The spectrum indicates that it is not high quality full spectrum lamp.
Viva-Lite energy saving lamp. The spectrum indicates that it is high quality full spectrum lamp.
On the left Viva-Lite lamp, on the right Androv lamp. Because there is much more blue in the Androv lamp (6000 K), the colors are not as correct as by daylight at noon (5500K). For people, who has lived many years in warm light (2700 – 3000 K), likes according our experience more of 5500 K light than 6000 K light because it is not so blue.
Also it is much more pleasant to look at the 5500 K light than to 6000 K light according our experience.
Blue is good color in the mornings but not in the evenings. We recommend the Light blocking glasses at least one hour earlier in the evening, if you are using over 6000 K light.There are no long term studies, how high colour temperature light affects to the peoples health. We know that people have lived millions of years in 5500 K (or also in warmer light in the mornings and in the evenings) light and it is the best for the people. We believe so and so tells also many scientific studies.

Life on a Leaf- a total work of art – lighted by daylight

1 12 2009



Have you ever wondered why among all these millions of box shaped buildings, you will never see a house shaped like a shoe, a flower or a leaf?
This is the question, which set out artist Jan-Erik Andersson on a long and adventurous journey to build his own leaf shaped house in the middle of Turku city in Finland. The house project, called Life on a Leaf, is also the art part of Andersson’s studies for a doctorate degree in visual arts at the Academy of Fine Arts in Helsinki. Read more…

Daylight lighting by Ilkka Pekanheimo, AD-Lux Oy

One of the most interesting projects of the lighting designer Ilkka Pekanheimo in 2007-2009 was the lighting of artist Jan-Erik Anderssons Life on a Leaf house in Turku. Every leaf spine is lighted with a daylight simulating dimmable light. This method was tested first and found to be excellent.
Ilkka Pekanheimo has promoted the use of daylight simulating light in Finland over 20 years already. Today more and more houses and also work places are completely lighted with full spectrum dimmable daylight lamps. In the Leaf house there are nearly 70 full spectrum Viva-Lite lamps, almost all high power, 49W or 54W lamps.  Bluebell winter garden is lighted with daylight Citizen-LED lamps.
Ilkka also had the idea to build a lighting fixture kit. The fixture is missing the framework. This is a very economical solution, because the electronic ballast of the fixture can be installed within the rooms temperature. If it would been inside of the fixture, the heat of the lamp would make the life time of the electronics much shorter. The lighting of the Leaf house has been realized with this fixture kit with Helvar’s dimmable electronic ballasts.


Ilkka Pekanheimo checks which bulb would suite on of the fixtures.

Ilkka Pekanheimo, who has been a consultant for planning the full spectrum fluorescent daylight system in the house, checks which bulb would suit one of the fixtures.
Because we see better in daylight lighting, our eyes are less tired and the colors of the furnishings are real. The medical studies from Ilkka Pekanheimo have helped a lot in the promotion of full spectrum daylight, which also has significant health effects.

The wooden shelves, which function as a half open wall to the loft, are installed. They still need to be painted. The ornate metal railings, which will include Shawn Decker’s sound installation, are fastened to the concrete bridge. The dimmable lights under the roof beams function beautifully.

This method of lighting further saves energy. As no incandescent and halogen lamps are used, it positively addresses the effects of climate change. All lights, except from the installation in the dining room with 26 retro lamps from the 60:ties and 70:ties, are full spectrum fluorescent lights, many of them dimmable. These lamps can be replaced later with LED-lamps, when incandescent lamps are no more available.

More information.

A home lighted with full spectrum lamps

3 08 2009


Here is the video of perhaps only totally with full spectrum lamps lighted house in the word. Or do you know another? It is situated at Valkeakoski, Finland, where the housing fair in 2009 is.

A living room with Viva-Lite daylighting

A living room with Viva-Lite daylighting

The high room with Viva-Lite fittings in the corners of the living room.

Reduce global carbon dioxide emissions

23 05 2009


The aim of the manufacturer of Viva-Lite full spectrum daylight lamps is to reduce global carbon dioxide emissions. Read more.

A house lighted with full spectrum Viva-Lite

25 03 2009


Today I made a lighting plan for a bigger house together with the owner/builder. See here the first lighting plan of the ground floor and the second floor. They ordered almost 70 Viva-Lite daylight lamps and more than 50 meters of stylish moulding for indirect lighting. See more about these mouldings. Click the picture on the right and click Wallstyl WT4. Yet another happy family with children.

Avoid halogen lighting

21 03 2009


I just wrote to a webforum under header Renewal of lighting trends: “Halogen lighting has been a trend for years in home lighting. Although the most common halogen lamps and incandescent lamps are to be removed from the market in a couple of years, they are still being recommended for some reason. Woudn´t it be time for a change already? Those lamps use too much energy and they have a negative affect on climate change. They are a fire and glare risk. That is why there is no reason to store them for rest of life.”

A unquestionable fact is that the older your eyes get the worse you see with warm toned incandescent lamps, halogen lamps and standard energy saving lamps. Viva-Lite lamps are of great help.

School lighting with full spectrum daylight

9 03 2009


Today I discussed school lighting with Minister of Education Henna Virkkunen and also with Member of Parliament Ilkka Kanerva on their Turku-visit. Both of them found the issue very important. They became also informed on a Viva-Lite school lighting trial going on in Turku and Stockholm school lighting trial.

Today we also got the biggest order this year so far: 60 fluorescent light fixtures and 130 Viva-Lite fluorescent tubes and energy saving lamps to Haapajärvi.