What is the CRI Color Rendering Index? The role of CRI
You can't distinguish the two black and purple socks in the closet? That could be because your lights have a low CRI. So what is CRI? What does this indicator mean for your daily life?
What is CRI?
1. CRI is an index with a maximum of 100
When it is necessary to measure a quantity, people often assign indicators to it. CRI is similar. CRI, short for Color Rendering Index, is a scale used to reflect the accuracy of the color of an object when illuminated.
2. CRI is used to measure artificial light
Lighting is divided into natural light and artificial light. As the time we spend indoors, in the office or at school is increasing, it is essential to pay attention to the quality of the lighting. The highest CRI is 100, equivalent to the index of natural light from the sun. The higher the CRI, the better the quality of the light.
3. CRI reflects the color accuracy of the object when illuminated.
Let's see the example below to understand what color rendering is.
In turn, the image from left to right shows the color of things when illuminated by 3 light sources with different CRI indexes. (Source: Internet)
The higher the CRI, the more faithful and vivid colors are represented. In contrast, light with low CRI causes color contrast to become blurred, indistinct and gloomy.
Application of CRI in life
CRI is associated with color. If color is important for your space, you need to choose a light source with a high CRI. For example, with fashion stores or supermarkets, good quality lighting systems will bring the most authentic images and experiences to buyers, helping to stimulate purchases.
Source: Internet
According to the standards of CIE (Commission of International Lighting), one of the criteria for high-quality lighting is to have a CRI ≥ 80. In the period before 2010, incandescent and halogen bulbs were the light sources. meet this criterion. That is why these types of bulbs are used in spaces where high quality of light is required, where a high degree of color accuracy is required for operational as well as visual comfort. However, nowadays these types of light bulbs are no longer suitable for modern life because they consume a lot of electricity and in many cases become sources of unwanted heat emission. With modern lighting technology, new generation LEDs have solved this.
All LED products of PHENIKAA LIGHTING are researched and developed by a team of leading scientists and experts in the field of lighting to provide high quality light sources with CRI up to 96, safe and appropriate. Use for any room in the house.
Phenikaa Lighting's LEDs with up to 96% CRI, reproduce natural light for human health
With a number of other special spaces such as high-class restaurants, hospitals, showrooms... besides CRI, the R9 index also needs attention. R9 is an indicator of how accurately a light source can reproduce strong reds. Red is an important color for many applications, such as photography, textiles and human skin tone reproduction… For example, skin tone is greatly affected by the red color of blood flowing immediately. underneath our skin. Therefore, light that lacks red - has a low R9 index, will make human skin look pale, even purple. This can be problematic for medical applications where color is important for accurate diagnosis. In other applications such as photography, aesthetic appearance is very important and often cannot be edited even during post-production and digital editing.
R9 is a very important metric because many conventional LED light sources lack the red part of the spectrum, but this fact is hidden because the average CRI calculation does not include R9. A light source with R9 ≥ 50 is considered a “good” light source, R9 ≥ 90 is considered an “excellent” light source. Focusing on this indicator, a number of PHENIKAA LIGHTING LED products have been researched and developed and have R9 values up to 95.
You must have answered the first question about two socks, right? Light is always around us, but contains a lot of things that we do not understand. Like air, light is an essential part of human life. Understanding light, choosing the right lighting products and using it properly in the living space and purpose will help us lead a healthy, balanced and positive life.
