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The Color Rendering Index (CRI) is a measure used to quantify how accurately a light source renders colors in comparison to a reference or natural light source. It is a way to assess the quality of light in terms of its ability to reveal the true colors of objects, especially when compared to daylight or other ideal light sources.
CRI is usually represented as a numerical value on a scale of 0 to 100, with higher values indicating better color rendering ability. A CRI of 100 would mean that the light source accurately renders colors just like natural sunlight. However, it's important to note that most artificial light sources, including traditional incandescent and fluorescent bulbs, do not achieve a CRI of 100.
CRI is calculated by comparing the appearance of a set of standardized color samples when illuminated by the light source being tested and when illuminated by a reference light source with a known CRI. The differences in color appearance are then used to calculate the CRI value.
A higher CRI is generally preferred for applications where accurate color representation is important, such as in photography, art galleries, retail environments, and medical settings. However, CRI has limitations and doesn't always provide a complete picture of how well a light source renders colors, especially for certain types of lighting technologies and specific colors.
It's worth noting that the Color Rendering Index has been criticized for its limitations in accurately describing color rendering, especially for modern lighting technologies like LEDs. As a result, newer metrics and standards, such as the IES TM-30-18 method, have been developed to provide more comprehensive and accurate assessments of color rendering.
Shenzhen Aihongyang Lighting Co., Ltd. is a high-tech energy-saving company specializing in the production of COB LED planar light sources. The company has 6 automated production lines with a daily output of 400K. The main advantageous products are LED lighting matrix packaging and LED lighting lamps. The company relies on LED With many years of experience in LED application in the electronic packaging industry, we have a production team developed by experts, masters and senior engineers. Products and services, dedicated to the application of LED T5, T8, T10 fluorescent lamps, LED ceiling lamps, LED bulb lamps, LED spotlights, LED downlights and other lamps; dedicated to LED light sources and products with low light decay and long life services. Continuous innovation in LED application products. The enterprise adheres to the principle of "integrity and sustainability", treats products with monographs, treats customers with sincerity, and acts as a model of honest management with the determination to build a century-old enterprise. Realize the perfect combination of the company's planar light source and traditional lamps, and contribute high-quality and low-cost products to the LED industry.