An LED that hardly diffuses blue light anymore

Anicet Mbida 06:53, November 01, 2022

The innovation of the day could extinguish the controversy around LED bulbs.

We have quite simply developed an LED which hardly diffuses any blue light.

“Almost more”, because we will never be able to completely eradicate this blue light.

There will always be a little, it's normal!

All lights, even sunlight, emit blue light.

The objective is above all that it remains at a reasonable level.

Problem with LEDs: they are designed exclusively based on blue radiation.

These are the ones that diffuse the most, those that illuminate the most and those that produce the greatest amount of energy.

Then, to obtain white light, we cheat: we mask part of this blue with red and yellow filters.

But the initial blue radiation is still present.

Researchers at the University of Houston in the United States have therefore developed a new type of LED bulb that works only with violet.

In the same way,

they added filters to get a nice white light.

But this time, with violet radiation that is less harmful than blue for eye fatigue, sleep disorders or the risk of AMD.

Will this bulb cost more?

This is the challenge for researchers.

They are currently calibrating the materials to approach price parity with traditional blue LEDs.

If they do, it could change everything.

You said it, LED bulbs could lose their bad reputation.

We will only talk about their qualities: energy saving, lifespan, cool operation and instantaneous illumination.

Remember that a city saves between 60 and 70% of its public lighting bill just by switching to LED bulbs.

With the current crisis and exploding energy prices, this remains a tremendous lever for savings.

How can we distinguish these new bulbs from classic blue LEDs?

For the moment, there is no official name.

This is the objective: to define a standard and a brand that allow you to know at a glance what type of LED you are dealing with;

blue or purple.

There is now a global standard, defined with opticians, to limit blue light from screens (all this without distorting the colors).

This is the EyeSafe label.

It is recent, so there are still quite a few devices.

But think about it when you're looking for a TV, computer monitor, phone or tablet.