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It is cuttable every 3 LED chips or 2″ (50mm) for 12VDC and every 6 LED chips or 4″ (100mm) for 24VDC. IP20 and IP65 strips also have a strong 3M adhesive tape backing that allows them to stick to most surfaces.
The Color Rendering Index (CRI) is a metric of color quality that is often misunderstood. Nevertheless, CRI consideration is critical for any application where color appearance matters.
Here’s a guide to help you better understand what it is and how it can help you.
How does the Color Rendering Index (CRI) work?
The Color Rendering Index (CRI) measures how accurately a light source can reproduce the colors of the objects it illuminates
It seems simple, but there is a lot going on, so we’ll break it down into three parts:
Color Rendering Index (CRI) is a score with a maximum of 100.
How do you measure something’s ability? According to CRI, a higher number represents higher ability, with 100 being the highest.
The CRI is a convenient metric because it can be expressed as a single, quantifiable value.
Scores above 90 are considered excellent, while scores below 80 are considered poor. (See below for more information).
The Color Rendering Index (CRI) is used to measure the quality of artificial, white light
There are two types of light sources: artificial and natural.
The color quality of artificial lighting, such as LEDs and fluorescent lamps, is generally of concern to us.
In comparison, daylight or sunlight is a natural light source.
Under artificial lighting, the Color Rendering Index (CRI) measures and compares the reflected color of an object
Let’s take a quick look at how color works.
Sunlight, for example, combines all the colors of the visible spectrum. White is the color of sunlight, but the color of an object under the sun depends on the colors it reflects.
What is the best way to produce LED lights with a high CRI rating?
As mentioned above, there is a significant difference between the CRI comparison, the R9 value, or the red spectrum. Therefore, if we want a higher CRI, we should get a high R9 or a wider red spectrum. What should we do?
The majority of white LED chips are made from blue LED chips coated with yellow phosphor. In order to make up for the lack of red spectrum, it is easiest to add more red phosphor to the yellow phosphor. There is a correlation between the two. If you have a white LED with CRI 70 and want 80 CRI, you might only need to mix with a small amount of red phosphor. Double the amount if you want 90.

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