OLU LED

Understanding Light

You flick on a light bulb, the room lights up. It works!  Great.

So how much light is it making?
How do you measure the amount of light coming from the bulb?
It’s called Lumens. Lumens is how much light is coming out.

How much energy does it take to make that amount of light?
That’s called Watts. Power is measured in Watts.

And the more Lumens you get for every Watt you spend, the better.

The more Lumens per Watt the better. It saves you a lot of money!

How does the light look?
Does it look a littl blu-ish, or a little yellowish, or pure white?
That’s called the Colour Temperature.

By the way, the human eye is most comfortable with indoor lighting that’s not too blu-ish.
That’s why we chose Natural Soft White 3500K for our bulbs.
 

How does the light spread?
Does it only point one direction, or does it shine all around?

That’s called the Beam Angle.

Sometimes you want a light to shine all around, and sometimes you want a spotlight or a floodlight that shines mostly in one direction. It depends what you’re lighting.

How do things look under this light?
Do the colours look natural and true, rich and clean, or do they look washed out or a little strange?
 

That’s called Colour Rendering and it’s measured by the Colour Rendering Index (CRI).

Colour Rendering is related to the spectrum of light coming out – whether all the colours of the rainbox are in the light or not. If the light doesn’t have whole spectrum of colours in it, you won’t be able to see the colour of things properly. It’s that simple.
 

So now you know more about light!

Light is key to our very survival, so it’s good to know about it.

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