LED lighting to improve color rendering index program
With the continuous development of LED technology , LED is made possible as an illumination source. Since the light source has strict requirements on the color rendering index CRI in the lighting fixture, the current white LED technology is not mature in color rendering, making it become Restricting LED as a major obstacle to lighting sources. White light is a composite light, and it is easy to decompose the light of various colors contained in white light by a prism. LED is a kind of light source with comprehensive chromatogram. This wide color gamut has laid a theoretical foundation for the high color rendering of LED lighting products. Light is a substance with wave-particle two-phase properties. This material contains the characteristics of the wave and contains the characteristics of the particle, which makes it have strong composite characteristics. Therefore, in terms of the nature of light and the characteristics of LED, LEDs are becoming a high-quality illumination source. At present, white LED technology mainly adopts the manufacturing process of blue-chip chip coating phosphor. This technology is developed by Nichia Corporation and follows the principle of fluorescent light in a certain sense. This technology is lacking in red and green light components. In order to make up for this defect, phosphor technology has become the main direction of the industry. The blue chip is coated with phosphor to make white light technology. This technology can produce white light with better effect in principle, but the difference in the adaptability to the environment during use makes the difference between theory and actual product. The difference is largely due to the effect of the LED heat build-up on the phosphor. We all have the experience that high-power white LEDs gradually reach equilibrium with the generation of heat and heat loss as the working time progresses. The higher the temperature of this equilibrium state, the more the influence on the white LEDs using the same type of phosphors. Large, the following figure (Figure 1) is the effect of temperature on the luminescent properties of the phosphor; Figure 1
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