From torches to candlelight, from oil lamps to electric lamps, human beings have always insisted on the constant pursuit and exploration of light.
Since Edison successfully trial-produced light bulbs in 1879, electric lights have gradually become a part of our lives. Now we are inseparable from artificial light, even during the day.
For more than 100 years, people have been focusing on how to make light sources more efficient. The application effect of LED on light has reached its extreme, but it also brings unavoidable side effects, such as damage to eyesight.
According to statistics, in 2012, among my country's population over 5 years old, there were 450 million myopia patients. It is estimated that by 2020, my country's myopia population will reach 700 million.
The damage caused by LED to eyesight mainly comes from high-energy blue light. LED needs high-energy short-wave blue light to excite yellow phosphor to produce white light. This short-wave blue light can penetrate the lens of the eye directly to the retina. The imaging area of the retina is protected by the macular area, which is mainly composed of yellow leaves. Vegetarian composition. Short-wave blue light will accelerate the decomposition of lutein, causing irreversible degenerative disease of the retina, also known as age-related macular degeneration. In addition, high-energy blue light can also reduce the secretion of melatonin, thereby interfering with the biological clock and affecting sleep quality.
In recent years, the rate of myopia among adolescents in my country has continued to rise, which is directly related to the backlight of LED display screens of TVs and mobile phones and the widely used LED lighting environment. Recently, some scientists have increasingly realized the importance of light quality and its impact on our daily environment.
The emergence of OLED (Organic Light Emitting Diode) lighting panels has given people a new understanding and expectations of light. OLED lighting is a new type of solid-state lighting technology and the fourth-generation lighting revolution technology after LED. OLED is not only better than LED in terms of energy saving, but more importantly, because of the different light emitting principle, blue light is no longer needed to excite the phosphor, thereby avoiding blue light harm.
The OLED lighting panel is a flat light source, while the LED is a point light source. This is the biggest difference between the two, resulting in a world of difference in the light of the two.
The importance of this technology lies not only in its unique shape, but also in the unprecedented level of light quality. Although LEDs can achieve planar light emission through light guide plates, the light effects and light quality presented are far less natural than OLEDs. OLED is the artificial light closest to natural light so far, and it has no ultraviolet and high-energy blue light, which minimizes light pollution.
The OLED spectrum is characterized by its wide half-wave peak width and no large gaps in the spectrum, which makes the color rendering index of the OLED light source very good, and the color fidelity is closer to natural light, which is especially suitable for indoor general lighting, even professional Photography and other applications. In addition, OLED also has the characteristics of light and thin, flexible and self-luminous surface, which will bring unprecedented innovation and development to the design of lighting fixtures.
Due to the popularity of LED display and lighting, people inevitably suffer from blue light damage. How to reduce the blue light harm has become a serious practical problem. OLED display and lighting will effectively solve this problem, but the premise is the industrialization of OLED and let more people realize the harm of blue light. Only when OLED is widely popularized can people get rid of light pollution.