Wavelengths

The LED Treatment System consists of lights with different wavelengths that can impact the body on a cellular level. However, not all wavelengths can affect cells. Here, you can find out why and how.

The Electromagnetic Spectrum

Radio waves, microwaves, infrared, UV, x-rays, and gamma waves are all forms of energy and part of the electromagnetic spectrum. Somewhere in the middle, you have visible light, which includes the colours you can see (red, yellow, green, blue, and violet).

All energies move in waves and can be measured by their wavelengths. For example, radio waves can be as long as a football field, microwaves can be as thin as a piece of paper, and X-rays are comparable to the width of a water molecule.

The Optical Window

Some wavelengths in the electromagnetic spectrum can penetrate the skin and tissue in the body. The range of wavelengths that has the best impact on the body is known as the optical window. These wavelengths include red, near-infrared, and infrared light, typically ranging from approximately 600 nm to 1200 nm.

Infrared Light

Infrared light falls outside the spectrum of visible light, which means we can’t see it. However, because it has longer wavelengths than visible light, it can penetrate further into the body, similar to how red light penetrates more than blue light.

Why Combine Different Wavelengths?

If infrared light can penetrate further, why do we use red light in our LED Treatment System? Different wavelengths can penetrate various materials (water, blood, tissue, etc.). For instance, the higher the wavelength, the more it is absorbed by water.

Why No Blue Light?

For the LED by CHEVAL LED Treatment Systems, we have chosen wavelengths within the optical window because these are the wavelengths that best affect the body. Blue light, while antibacterial (like red light), is often used in healthcare to sterilise instruments. However, when it comes to “living tissue,” red and infrared lights have a more significant impact.