April 24 is China's 9th "China Aerospace Day". At this moment, at an orbital altitude of 390 kilometers above the ground, our "Tiangong" space station is passing overhead at a speed of orbiting the earth every 90 minutes, which makes us look up at the starry sky with a different meaning, concern and pride.
However, few people understand that Chinese astronauts experience sunrises and sunsets 16 times a day on the Tiangong space station, and how can the lighting problem of astronauts in the space station for 180 days in such an extreme environment be solved? What is the difference between the lighting equipment used by astronauts in the sky and the lighting used by ordinary people? If it is a unique solution of the mainland's cutting-edge aerospace technology, what changes will such technology bring to commercial and civilian lighting?
The answers behind these questions have refreshed my traditional understanding of the lighting industry and the current technological development, and it is about to change every beam of light in our lives in the future.
The reason for all this is the associated light technology launched by NVC Lighting China Aerospace Lighting Laboratory, which has brought aerospace lighting technology into thousands of households and opened a new era of lighting.
From light to healthy lighting, it is the exploration and release of value
"God said, Let there be light, and there was light. ”
What is light? The biblical book of Genesis records that light was God's creation on the first day of creation, which separated day and night, and then came into existence heaven and earth, all things, and man. The growth of all animals and plants is inseparable from the action of light, which is the classic statement and the truth.
Modern science tells us that light is essentially a series of electromagnetic waves of different wavelengths produced by thermal radiation, and that electromagnetic waves with wavelengths between 380 nanometers and 780 nanometers are visible to the human eye. From violet to red light, the wavelength increases sequentially, the frequency decreases sequentially, and the color temperature decreases sequentially to form a continuous spectrum. Different types of light can have different effects on people's physiology and psychology. It is a well-established fact that 83% of the information that human beings obtain from the outside world comes from the vision brought by visible light, and light is one of the three essential conditions for life and health (sunlight, air, and water).
To put it simply, human beings have gotten rid of the situation of passive dependence on natural light and realized the active use and control of light sources. A history of the development of lighting technology is also a history of the survival and development of human society: from the natural light age of primitive society to the burning of plants and trees for light and then to fossil fuels for light, from the incandescent lamp of thermal radiation source to the fluorescent lamp of gas discharge, and then to the present when LED was born and developed rapidly.
In the development process of lighting, the value of light to people is also constantly improving: the luminous efficiency is getting higher and higher, the acquisition cost is getting lower and lower, the use of convenience and controllability is getting stronger and stronger, and the lighting technology has entered from simple visual lighting to considering the all-round impact of human physical and mental health.
So what is healthy light? In a word, nature and man are one, and light waves resonate with the human body at the same frequency.
Natural light is undoubtedly the healthiest light for humans and creatures in nature. In the course of millions of years of evolution, human beings have long been accustomed to the irradiation of the solar spectrum, and their adaptation and dependence on sunlight are engraved in our genes, forming our inherent circadian rhythm. For example, the color temperature of the light at sunrise is low, about 2000-3500 K, the color temperature rises to 4000-4500 K in the early morning, reaches more than 5000 K by noon (some high-latitude countries can even reach 8000 K), and in the evening and at sunset, the color temperature value drops to similar to that of morning and sunrise, respectively. If you do the right thing under the right light, your eyes, body and mind will be in the most appropriate state of health, and you will achieve a high degree of harmony between man and nature.
However, it should be emphasized here that natural light is not the same as sunlight, but sunlight is scattered and reflected by the sky and clouds, absorbed by water molecules, and when it reaches the earth, it is reflected by plants and buildings in the ground environment, and finally it is natural light that enters our eyes. Natural light is dynamic with time, place, and environment, and cannot be captured and difficult to replicate.
The solar spectrum, on the other hand, is fixed and continuous, almost eternal. For the lighting industry, in order to truly reproduce sunlight and restore natural light dynamically and controllably, it was a huge cost and unknown results.
From parameter wars to a return to humanism, true health lighting illuminates the visual, physiological and emotional
Wang Yangming, a master of mind, has a famous saying: "When you don't look at this flower, this flower and your heart will die together." When you look at this flower, the color of this flower is immediately understood. ”
The ancients pointed out a new direction for modern lighting science in terms of concept, that is, people are the main body of illumination. In other words, it is not the environment that is illuminated by light, but by the human senses. Only when the light is reflected from the environment into the observer's eye can the original mission of lighting be completed, and the existence of light and the environment has meaning. Light allows the world to be seen, and the existence of the world gives meaning. Therefore, health first meets the needs of people's visual health.
No blue light, no strobes, no eye damage, and high CRI are just the most basic and minimum requirements.
Conforming to the regular curve, so that the eyes feel the same as natural light under the artificial light source, can be regarded as a healthy lighting vision.
Secondly, light not only acts on vision, but also has a non-negligible impact on people's physiology and emotions. In 2002, scientists discovered that the third type of photoreceptor cells in the eye that is directly related to health, intrinsic photosensitive optic ganglion cells, referred to as ipRGCs, commonly known as melanopic cells, is the dominant non-visual pathway of the eye, which determines the secretion of melatonin in the brain, which in turn affects our sleep and wakefulness. Not only that, melanopic cells also affect our emotional regulation and cognitive function, which is essential for physical and emotional well-being.
Industry experts have found that warm light with low color temperature will make people feel warm and comfortable, which is conducive to physical and mental relaxation. The soft light of the neutral light gives people a natural, comfortable and pleasant feeling. The high color temperature and cold light give people a sense of seriousness and coldness, which can improve the excitement of the brain, concentrate attention, enhance alertness and awakening, and is conducive to a certain intensity of mental activities and exercises.
When the human body is tired or needs to rest, light with high color temperature is obviously disadvantageous, because it will inhibit the production of melatonin, stimulate the brain, have a negative effect on sleep, and more seriously, it will become a trigger for anxiety, insomnia and other diseases. The lower color temperature helps to secrete melatonin, which makes people relaxed, helps the body to fall into a deep sleep, and obtains good functional recovery. This study shows that the circadian rhythm of the human body is highly consistent with the changing rhythm of natural light, and healthy lighting must also be healthy to illuminate the physical and emotional.
On the other hand, there are a variety of lighting manufacturers in the current market, focusing on simulating sunlight, replicating fixed natural light, or fighting a price war when the healthy visual standards are not met.
Lin Liangqi, CEO of NVC Lighting, believes that the light is not on, the price is expensive, the appearance is good, and the technical parameters sound powerful, which has always been the main consideration for businesses to guide and consumers to make choices.
Starting from the underlying technology, returning to the people-oriented, choosing to meet the real needs of the human body with the appropriate cost, providing solutions around the three dimensions of vision, physiology and emotion with people as the center, and always maintaining the concern for the whole life cycle of users, is the true meaning of healthy lighting. This is also the enlightenment of aerospace lighting technology to civil lighting.
From the underlying technology research and development to open independent innovation, NVC Lighting realizes arbitrary cutting of light waves
After 26 years of technology and market precipitation, NVC Lighting, together with aerospace technology and top lighting design masters from all walks of life, has conducted in-depth research on natural light, launched the first domestic and international leading associated natural light technology, and accordingly found the most suitable natural light for human health - Clockwhite and MoodSwitch.
The former is a kind of high-quality wide-area white light that coincides with the blackbody sunlight curve, which is more in line with the human body's physiological rhythm and belongs to high-quality rhythm light, which provides benefits for lighting up the physiological value of health, while the latter is a soft and comfortable light color natural light, which is more suitable for emotional atmosphere regulation, can meet different scene experiences, and provides benefits for lighting up healthy emotional values.
"Associated adaptive light technology" is not an empty concept. Unlike most lighting companies that mainly rely on LED and electronic component suppliers, NVC Lighting has gone deeper and farther in the research and development of underlying technologies. In addition to focusing on the design of opto-mechanical and electrical thermal control and the development of lighting systems, strictly selecting lamp bead materials, we also start from the analysis of spectrum, think about the combination of phosphors, combine LED chips for innovative customization, and continue to study the user's color preference and psychology, and study the control module protocol and light mixing algorithm. Neon light technology and curve fitting technology are the two unique underlying technology representatives of NVC Lighting's independent innovation.
Based on LED spectral technology, the new three primary colors of healthy lighting - bonfire red, budding green, and clear sky blue are redefined, and then through the superposition and combination of light mixing algorithms, countless spectral combinations can be realized.
Dai Qi, a professor, doctoral supervisor and health lighting expert at Fudan University, said: "Spectral optimization is the cornerstone of further progress in lighting technology, and only by mastering this algorithm technology can we accurately realize the 'intelligent cutting' of light like a tailor, meet the innovative design of scenes under different lighting needs, and achieve high-quality and efficient healthy rhythm lighting." ”
Wang Hongbo, vice president of R&D of NVC Lighting, mentioned: "Associated light realizes complex functions in a simple way, and is a natural light that harmoniously adapts to man and nature, with unlimited imagination. In nature, the light is just right, not all light is the same, and not all lighting is a health cause. Adaptive light is a dynamic healthy light technology developed based on the needs of healthy lighting, which will help us usher in a new era of healthy light environment.
Yes, the truly healthy and suitable light is an amazing creation, a cup of exquisite blending, a superb tailoring, a masterpiece of the intersection of technology and humanity.
The mysterious double-slit interference experiment shows that light is a particle, a wave, and a spiritual spirit. The harmonious coexistence of man and light is not only the pursuit of health and quality of life, but also the exploration of never-ending life aesthetics. NVC Lighting's redefinition of the value of light, and the breakthrough in intelligent, personalized and environment-friendly lighting technology are becoming a model of new quality productivity in society, leading the industry to create a new era of Chinese lighting.