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'Lighting should be people-oriented' has become a consensus in the industry. Manufacturers are no longer just concerned with pure light efficiency or lifespan, but also consider human perception of light and its impact on people, hoping to create artificial light that is closer to natural light. Natural light, also known as 'sunlight', high color rendering index color rendering 925000 years ago, people mainly relied on natural light to work from sunrise to sunset. In the 19th century, with the development of the power industry, the first artificial light appeared, and then artificial light went through incandescent lamps, fluorescent lamps... until now, LED... People have been pursuing artificial light that is closest to sunlight. With the maturity and development of LED high color rendering index color rendering 92 technology, manufacturing full spectrum LED high color rendering index color rendering 92 that is similar to the solar spectrum has become a hot topic in the industry in recent years. Full spectrum refers to the spectral curve containing ultraviolet light, visible light, and infrared light, and the proportion of red, green, and blue in the visible light is similar to that of sunlight, with a color rendering index Ra close to 100. The spectrum of sunlight can be called the full spectrum, and the color temperature changes with the seasons and morning and evening time. Therefore, the spectrum of a full spectrum lamp should change color temperature successively with time to simulate the natural light environment, in order to better conform to the natural growth laws of organisms.

The continuous spectrum of solar radiation at noon on a sunny day, with a color temperature of 5000K, is divided into visible light and invisible light. Is the wavelength of visible light 400? 760 nm, divided into 7 colors: red, orange, yellow, green, cyan, blue, and purple, concentrated as white light; There are two types of invisible light: infrared with a wavelength greater than 760nm and 290 nm? 400nm ultraviolet radiation. Full spectrum LEDs should simulate the 5000K solar spectrum as much as possible. In ordinary LEDs, the blue spectrum is relatively high and lacks parts of violet, cyan, shortwave green, and longwave red light. Currently, full spectrum LEDs are achieved through chips and phosphors, which supplement the full spectrum by adding violet chips or phosphors with wavelengths in the concave region between blue and phosphor peaks.

The color rendering ability of a light source on an object is called color rendering, and the color rendering index of sunlight is defined as 100. The closer the color rendering index (Ra) value is to 100, the better the color rendering. When evaluating the color rendering of a light source, 15 sample colors are used. The special color rendering R9 is the quality indicator for evaluating the reproduction of vivid red color by LED. High values for Ra and R9 are indicative of high-quality LED performance.

Compared with ordinary LEDs, full spectrum LEDs have a more continuous spectrum and a wider color gamut; The color rendering index Ra has significantly increased, approaching 100; The special color rendering index R9 can be as high as 90 or above. Full spectrum LED greatly enhances spectral continuity and integrity by completing the missing short wave purple, cyan, short wave green, and long wave red spectra, making the color gamut wider and closer to the full spectrum of sunlight. Short wave 'purple light' helps the human body synthesize vitamin D and promotes the absorption of calcium. The wavelength is 400 nm? The 420nm purple light also helps plants form anthocyanins and resist elongation of branches and leaves. Long wave 'red light' can promote overall plant growth during flowering and fruiting periods.