What is light?
Licht is the electromagnetic radiation that is emitted as waves from the electromagnetic field and spreads throughout the universe. These waves consist of oscillating electric and magnetic fields that travel at the speed of light, approximately 299,792 kilometers per second (or about 186,282 miles per second) in a vacuum.
Imagine these electromagnetic waves like a table tennis ball. The more bounces it makes on the table while moving, the shorter the wavelength of the electromagnetic wave, and vice versa.
By measuring the distance between these jumps, we can determine the type of "light" with great accuracy. And do you know what? We have managed to measure the entire spectrum of these waves and found that their length (the distance of the "jumps") varies from 100 meters to 0.0001 nanometers (one nanometer is one billionth of a meter!).
To give you an idea: This ranges from the size of a large building (100 m) to the size of a single atom (0.0001 nm).
Now you have just found out why, for example, TV or FM signals travel at the speed of light - because they are light! We just can't see them!
What is visible light?
Visible light is just a small part of this electromagnetic radiation that our eyes can capture and decode. Imagine our eyes as special biological devices that perceive only this small spectrum of these waves and reject everything else.
From the vast range of the complete light spectrum (waves from 0.0001 nanometers to 100 meters), we only see a very small part, namely the light waves between 380 and 740 nanometers!
Colors
This small visible part of light consists, when we break it down into small pieces through a prism, of 6 colors with wavelengths between 380 and 740 nanometers. When we pass a beam of light through a prism, colors appear.
These are the colors that a person can see in our physical environment. These are the specific electromagnetic waves for which our eyes are designed to receive and decode.
We call them the three primary colors (Red, Green, Blue) and the three secondary colors (Yellow, Cyan, Magenta). By mixing these 6 colors, we can create all possible shades that we can imagine.
Let's call it the "natural color space".
Color space - CIE 1931
An international scientific organization, founded in 1913 (the International Commission on Illumination - CIE), succeeded in 1931 in capturing this "natural color space" with a mathematical model in the form of a diagram, which they named CIE 1931 (after the name of the organization and the year in which they created this mathematical model). The CIE 1931 diagram encompasses all colors visible to the human eye within its horseshoe-shaped boundary. Colors within the boundary are considered realizable colors, meaning they can be reproduced by combinations of light sources. Colors outside the boundary are imaginary colors that cannot be reproduced with typical light sources.
Now we come to the color spaces that have been developed by the video entertainment industry and are still in use today.
Rec.709 color space
It is a standard developed in 1990 by the ITU (International Telecommunication Union) for high-definition television (HDTV) and digital video transmission.
The Rec.709 color space covers only about 35.9% of the visible color spectrum (CIE 1931).
Consider that in the last 30+ years we have seen every film in HD (720p & 1080p) with a color reproduction that only reaches 35.9% of the colors our eyes can see.
DCI-P3 color space
The DCI-P3 color space was established in the early 2000s by the Digital Cinema Initiatives (DCI), a consortium of major Hollywood studios, as a color space standard specifically for digital cinema projection systems and was released in 2007.
The DCI-P3 color space covers only about 45.5% of the visible color spectrum (CIE 1931), which is about 10% more than the Rec.709 color space.
Rec.2020 color space
Und now we come to the latest color space standard of the ITU (International Telecommunication Union) from 2012, Rec.2020, also known as BT.2020. This standard was developed for ultra-high-definition television (UHDTV) and the latest generation of video transmission.
The Rec.2020 color space covers about 75.8% of the visible color spectrum (CIE 1931).
Rec.2020 was developed to overcome the limitations of earlier standards (such as Rec.709) by significantly expanding the color space to cover a wider range of colors. This expansion was intended to enable advancements in display technology and provide consumers with a more immersive and realistic viewing experience.
Development of Display Technology
The advancements in color reproduction in the video industry and digital imaging have made tremendous progress with the introduction of standards such as HDR10 and Dolby Vision, as well as new color standards like the Rec.2020 color space.
Of course, only very few digital displays today can reproduce the color range that reaches 75.8% of the visible color spectrum and covers 100% of the Rec.2020 standard. Even 12 years after the introduction of the Rec.2020 standard, there is no consumer television technology that can reproduce 100% of the Rec.2020 color space.
RGB laser technology and color space
The revolution in RGB laser technology through laser TVs has enabled the complete reproduction of the Rec.2020 color space and, in some cases, even surpassed it!
The AWOL Vision Laser TV UST projectors, with their modern pure RGB laser technology, not only fully cover the Rec.2020 color space but exceed it by 107%. This corresponds to approximately more than 81% of the visible human color spectrum! It is truly impressive.
Genuine Screenshot - AWOL LTV-3000pro
Do you know...
What exactly is a color space, and to what extent does a display device represent the natural color spectrum according to its specifications?
What is the difference in color performance between a display device that covers the Rec.709 or DCI-P3 standard and one that covers the Rec.2020 standard?
Now you know it!
AWOL Vision Technology