Comfort and health become new consumption needs, LED lighting industry ushered in the era of healthy lighting.

In October of this year, the company launched Eyelove health lighting products, including DL natural light series and EC health light series, and became the main force of the domestic health lighting market. Looking at the international market again, Seoul, semiconductor, Philips, GE and other international lighting factories have introduced health lighting products in the past or recently. With the continuous improvement of technology, LED manufacturers' pursuit of lighting trend has gradually changed from the past high light efficiency and long life to the high gloss quality and more healthy lighting products.

Natural light spectrum LED new trend of lighting development

Comfortable and healthy lighting becomes a new demand for consumption. What kind of light source is a comfortable and healthy light source? Man has been living on the earth for millions of years, and has been evolving with the changes of the living environment, but the only constant is the dependence and adaptation to the sunlight. Therefore, we can think that natural light or sunlight is the most comfortable and healthy source of light for human beings. Therefore, when launching health lighting products, manufacturers will almost always use sunlight as a benchmark, similar to sunlight or even better than sunlight.

The spectrum of sunlight includes ultraviolet, visible and infrared spectral curves, which can be called all optical spectrum. The natural full spectrum LED light source refers to the proportion of the bands in the visible part of the LED light source, which is similar to that of the sunlight, and the color rendering index is close to 100. The traditional LED light source, the main way of lighting is the wavelength of 450nm or so. The blue light chip stimulates the phosphor to form white light. This causes blue light radiation to be too heavy. At the same time, some blue and green light and deep red light are missing. Especially some poor light source products, which can easily cause eye drops, cataract, blindness and so on. Therefore, high quality natural light spectral LED light source has become a new trend of healthy and comfortable lighting development.

Natural light spectrum

Purple chip + phosphor technology is more suitable for healthy lighting.

The current LED all-optical source has two main solutions, one is the way to activate phosphors for 450-460nm Blu ray chips. By improving the phosphor and improving the color rendering index and luminous efficiency, Ra can reach more than 97, but still shows a high intensity blue peak. Only the coverage band of phosphor is wider than that of ordinary LED to improve Ra. And R9, the continuity of spectrum is not perfect, and the intensity ratio of each band is quite different from that of solar energy. Therefore, the advantages of this solution for health lighting are not obvious. It is mainly used in commercial lighting, and the high color rendering index is the main advantage.

Another scheme is to stimulate RGB multicolor phosphor to achieve continuous spectrum for purple light chips, rather than a two-color phosphor that lacks the coverage of blue-green and deep red light. The light source of the scheme is close to the solar spectrum, not only achieving high reduction degree and high saturation, but also avoiding the appearance of short wave blue light. Although the optical efficiency will be sacrificed, there is room for improvement.

China Star photoelectric Eyelove leads the domestic healthy lighting market

The DL natural light series of the national Eyelove health lighting source adopts the purple light chip excitation phosphor scheme, which is closer to the sunlight spectrum. The comfort level of the human eye is greatly improved compared with that of the general LED light source, and has a positive effect on the regulation of the circadian rhythm of human beings.

Comparison of healthy lighting series of Eyelove-DL and solar spectrum

Source: Guoxing Optoelectronics

Eyelove health lighting source DL natural light series mainly contains three specifications products, 35284014 and 3030. Short wave (415-460nm) blue light is low, effectively reducing the harm of blue light to the retina. The spectrum is better, color fidelity index, color saturation is higher, and the quality of light and color is significantly improved.

Guoxing Eyelove-DL health lighting products Roadmap

Source: Guoxing Optoelectronics

Because of the national electronics company, the company has been engaged in research and development of UV LED, so the use of UV chip + fluorescent powder scheme, Guoxing photoelectric has natural advantages, whether technology or supply, Ya Wei long can give the largest support of Guoxing optoelectronics. Therefore, in terms of luminous efficiency, Eyelove-DL natural light series health lighting products already have a good performance. At present, the level of mass production can reach 110lm/W, and the 3Q19 luminous efficiency is expected to increase by about 10%.

Healthy lighting is a trend, and full spectrum is the way.

With the continuous improvement of people's living standard, health problems will be paid more and more attention. As one of the main driving forces of circadian rhythm, light, whether natural sunlight or artificial light source, will trigger a series of physiological rhythmic responses. Health lighting, popular point is that through lighting, can improve and improve people's work, study and living conditions and quality, and promote psychological and physiological health lighting, which is also the vision of many LED manufacturers, including Guoxing photoelectric. Healthy lighting is an important trend of future lighting development, and LED all-optical source is the main way to achieve healthy lighting. (text: LEDinside Allen)

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