General lighting for a kid’s room: 3 technical characteristics to observe17. Feb 2019
Previously we wrote in our blog about important criteria to take into consideration when choosing a ceiling light for a nursery. In today’s post we will advise you on the language of numbers, since the words ‘enough’ and ‘optimal’ are like adding salt to taste when cooking. We will take a look at important characteristics and what should be avoided. We have put together a cheat sheet that will help you at a store or when picking out a lamp online.
1) Light output | Indicator: LUMENS (lm). To put it simply, lumens show how much light a lamp, a light bulb or another light source produces. The number is always marked on luminaires with built-in LED modules. If a lamp needs additional light bulbs, then you can add together the lumens of the light bulbs used.
The main recommendation is to set aside luminaires that produce less light than 2000 lm, since this is simply not enough for a nursery and will result in a dark room. The room will have good lighting if you take into account 250-300 lm per square metre. For example, the light output required for a 12 m2 nursery is at least 3000 lm.
A good tip and recommendation, especially for those who shop online, is to buy a luminaire to which a dimmer can be added, or which already has an integrated dimmer. This will give you the chance to install a more powerful luminaire and regulate the luminous intensity as you see fit. A dimmer gives you the chance to regulate the luminaire according to the children’s activities.
2) Light temperature | Indicator: KELVINS (K). Kelvins show how warm or cold the light provided by a light source is. Our experience shows that in nurseries most people are satisfied with light sources that have a temperature of 2900-3000K and which are categorised as ‘warm white’. Those who prefer warmer, yellower light can use light sources with a temperature of 2700K.
3) Purity of light | Indicator: CRI (Colour Rendering Index). As a general light you should give preference to a luminaire that provides pure light and does not distort the natural colour of the things in the room. If the colour of the ceiling light turns the whole room red or green it will become a distraction over time. In the case of light sources the ‘purity’ of the light is expressed by its CRI, which should be >80. However, the biggest threat here is not light sources but the materials from which the luminaire is made, through which the light might pass or from which it might reflect.
In conclusion, it can be said that if you observe these indicators and follow the recommendations given earlier when choosing a general light for your nursery you will certainly make a more informed choice. Modern solutions ensure better development opportunities for children and maintain the health of their eyes.