TESLAbikář or how to choose the right LED bulb

Let's face it, nowadays we take light for granted. We don't have to wander around at home or outside in the dark and indulge in the possibility to see and be seen, practically without limitations. Thanks to light, we can extend our day to suit our individual needs.

If we forget that light is important for seeing and perceiving objects, or for creating the atmosphere in our home, it is also very important for the human organism - the biorhythm. In dark lighting we get tired and in bright lighting we find it hard to fall asleep. Each space has its own specifics and fulfils a different function.

So yes, the light bulb is also important for our health. And that's something worth looking into more when it comes to choosing the right bulb. How do we choose a new light bulb? Have you noticed the many numbers on the packaging? Let's take a look at what all these numbers mean and why they are important.

Just for easy orientation in this data we have prepared a guide called TESLAbikář or How to choose the right LED bulb. The individual parameters of light sources will be discussed in detail in separate articles. But right now, we'll give you a brief guide so that you can start buying a new LED bulb right away.

1. Which LED bulb do we need for which luminaire?

Each luminaire or its instruction manual indicates for which socket/thread it is designed. So we just need to look and write down the relevant information. Among other things, you can find out the rated wattage (W) and the voltage of the LED bulb (V). Alternatively, we can safely remove the existing bulb and read the required figure. We also take into account the desired shape and size of the LED bulb so that it fits into the luminaire.

3. How much light do we need from the LED bulb?

How much a bulb should shine - or more precisely, how much light it should produce - is monitored using a luminous flux indicator called luminous flux, given in units of lumen (lm). Modern LED sources often have a higher luminous intensity, even with a lower power input, than conventional bulbs. It is therefore not ideal to look at bulbs by wattage alone, so it is important to know the luminous intensity as well. The higher the value in lumens, the higher the luminous intensity.

2. In which space do we want to use the LED bulb?

Each room in the house has its own specifics and should have its own colour temperature. This criterion is technically called chromaticity temperature and is given in units of Kelvin (K). Simply put, colour is divided into three basic types of white.

4. How true and realistic do we want the colours to be?

Colour fidelity is expressed by a value referred to as CRI or Ra. Where colour is important, we recommend choosing a bulb with a higher CRI (Ra) value. Modern LED bulbs have a value of 80 or more, giving a true and realistic colour rendering. At a value of 0 we are unable to distinguish any colour. At a value of 100 the colours are completely natural. You can read more interesting facts and details here in the coming weeks.