Human Centric Lighting, the literal translation is human-centered lighting, people-specific lighting, translators are too talented because of lighting, if it is because of human lighting, it looks very lame, and Human Centric Lighting looks very compelling.
Human-caused lighting refers to the application of lighting technology to perfectly integrate light and space, allowing people to obtain healthy effects and comfortable feelings in physical and emotional aspects, and to meet the personalized lighting of people who work and live in a specific environment demand.
Human lighting is not equal to healthy lighting, healthy lighting is not equal to healthy light, and healthy light is not equal to pseudo-daylight. Each layer is an inclusive relationship, and intelligence runs through all the aforementioned terms.
Human-caused lighting contains too much content, but when the definition is elaborated, it is often explained by healthy light and smart light. This is limited. Even the combination of the two cannot explain all of the human-caused lighting.
Some people have concluded that the five major factors of human-caused lighting are-spectrum, illuminance, light distribution, time and time period. They look good. They are nothing more than a combination of these basic elements, but in fact, they now make a conclusive definition of human-caused lighting. It’s too early. This is similar to smart homes. In terms of detailed definitions and applications, it will take time to gradually improve.
On the contrary, healthy lighting and healthy light are some things that can be seen and tangibly expressed in a concrete way. Today, I wonder what kind of light is called healthy light and what kind of lighting is healthy lighting.
Healthy lighting
A long, long time ago, I tried to understand pan intelligent lighting and healthy lighting. After getting a few pictures, I just used it to analyze some basic elements of healthy lighting.
I said it was made a long time ago, but occasionally I will use it again, so it is inevitable that there are deficiencies. After four or five years of development, everyone has a deeper understanding of intelligent lighting and healthy lighting. Things, such as full-spectrum golden light.
Therefore, healthy lighting is also a big concept, which is a result of focusing on the basic functional performance of the product to focusing on the application experience to achieve a healthy and comfortable light environment with scenes. If smart home is a comprehensive service, then health lighting is part of the technology and product applications that support this comprehensive service. The supply side uses systematization, intelligence and new products to build health lighting, while the user side depends entirely on it. The scene experience makes a choice.
In the eyes of the chef, the Manhan banquet that users want is actually chicken nuggets, fish fillets, and oil, salt, sauce and vinegar. Therefore, communication with customers or marketing promotion is too general if it is healthy lighting, healthy and comfortable. Talking about the power source color rendering index Ra98 with a dimming depth of one-thousandth, the LED light source is too esoteric… it is far more direct than the silky smooth and the true color of the sun.
Talking to end users about technology is like making sense with women who are too close/close to you. Either the other party is embarrassed and gets angry and finally flashes and thunders, or he has a dry tongue, and Jiang Lang finally leaves the scene silently and sadly.
Healthy lighting is the table of dishes, and the classification products of healthy lighting are each dish. Of course, whether each dish is delicious or not is related to the chef’s skill, but the ingredients are also very important and the most important starting point. If you use materials that can’t even pass the RoHs level, and even the most basic requirements of 3C like to play the sideball in the gray area, no matter how good the iron is, it is not healthy.
Actions must be done, body must be upright, heart must be sincere, healthy lighting means, sincerity is spirit! The comprehensive development of morality, intelligence, physical education and art is to apply to health lighting products, that is, you must design delicately, use materials you must be realistic, serve you sincerely, promote you affectionately, and finally, all cooperation should not only care about the immediate gains and losses, persuade you You are kind.
Ambient color
Lighting, or light, is an additional element. It must interact with the environment to have an effect. The environmental factors are too complicated. Here we only analyze the environment color that has the strongest association with light.
Red acts on people to generate excitement and attract attention, so it is also called “forward color”, but it can cause oppression and tension in the vision, so it is often used as a warning.
Orange is the warmest color in the warm color system. It is also called the nutritious color of bread. It is the color of maturity. It can most arouse people’s appetite and sexual desire, and it is also the color of desire. Therefore, many foods and logos are this color, which is full of temptation.
Yellow is bright and bright. It is one of the four primary colors of psychology that does not belong to the three primary colors. It is visually pleasing but stimulates the anxiety-related areas of the brain. It looks beautiful at first glance, but it is very boring to see more.
Green is the most eye-catching. It is neither a warm color nor a cool color. It is the color with the lowest visual fatigue among all colors. It makes people feel safe, fresh, hopeful, calm, comfortable, vigorous, youthful… But here is natural green, paint green is simply a disaster.
Blue is the most preferred color for LOGO design. There is no one. It is the coldest color in the cool color series. It feels pure, clear, lofty and intelligent on the touch, which makes people calm and sensible.
Purple is the kind of color that makes people feel extravagant when used on the right objects of the right person, but it can make people feel intimidated and uneasy when used on the wrong objects of the wrong person. If you use it well, it is graceful and elegant. So dark and melancholy.
White is the daylight color, and it is also the color that is most acceptable to the human eye. Therefore, it is also the most commonly used color in the design of industrial products and daily necessities. It is also the same in environmental applications. If it is not a special business place, the main tone is white. best choice.
If you stay in a closed environment dominated by a single tone for a long time, red and purple make the visual experience oppressive, orange makes people desire desire, yellow makes you feel nervous and irritable, green (harmonious color) makes people feel depressed and depressed, blue It makes people feel desolate…Only white is the color of sunlight, which makes people living in closed spaces of homes feel similar to the outdoor environment, which is the best main color of home.
We have to analyze on this basis what can be called healthy light and healthy lighting has universal meaning. Although the pursuit of a personalized light environment can truly achieve the demands of health, if you grow up like Jack Ma, even if it is accompanied by Pierre Cardin, he You can’t be a handsome guy. If the decoration itself has a fierce color, the lighting will only help you become abusive, and there is no health at all.
Ancient houses and old houses often appear gloomy, not only because of the age, but mainly because of the materials and colors. You can use lighting to create antique colors, but you can’t change the continuous visual oppression. This is an example.
Color temperature and illuminance
Light is the core element of lighting, and it is also the most interpreted content. Of course, healthy lighting also emphasizes the setting and use of light, but once it is combined with the object of use of “people”, and then combined with the variable factors of “environment”, it is complicated The degree is not at all that a “intelligence” can achieve a perfect solution. The “people” and “environment” factors must be taken into account.
In the end, you must go to the lighting that can support custom scenes and effects that are silky smooth and heart-warming. For healthy lighting, the color temperature and illuminance are of limited significance. If you don’t believe it, go Look down.
The walls are all that white wall, but the different irradiance you apply to it will give you a completely different feeling of vision. From low to high, it will gradually produce black, dark gray, light gray, white, milky white, ivory white, bright white… Different changes in the series have different visual perceptions, different psychological perceptions, and different effects on people’s emotions.
Black has the benefits of black, and white has the value of white. People in different moods and physical conditions will in turn affect their feelings of comfort. When you are happy, the environment will become dark and may slowly calm down and depressed. When the environment is brightened up, it may gradually become irritable.
In addition, eyesight and visual contact vary from person to person. It is not appropriate to apply standard illuminance requirements. There is no standard for health lighting and health light, at least not currently. Maybe in the future, big data can be used to analyze an application that covers most people. The model is used in lighting scene settings, and the best result we can pursue now is nothing more than turning on and off the scene light with one key, making a one-key adjustment of the scene illumination and color temperature, and leaving the choice to the user.
The color temperature situation is similar, the same white wall, with different color temperatures, the human eyes seem to feel the color change, which is exactly what the sky shows to me.
There are already too many data on the effects of different color temperatures on people’s emotions and body, and there is no more specific data like colors. In general, warm colors make people relax but slack, and cool colors make people efficient but tired. Is that neutral light the best? It depends on how you understand and define health. If it is a healthy life, of course it is a warm color system. If it is a healthy job, it needs neutral light. If the environment is not suitable for people to think about health, use cool color. system.
The most interesting thing is that when the color temperature and illuminance are superimposed, the situation will become more complicated. The Dutch physicist Cruisov’s illuminance and color temperature comfort curve is researching this, and his research results are in line with sunlight. The impact on the earth’s illumination effect during the period of rising and falling within a day is similar.
The light environment changes caused by the superposition of color temperature and illuminance.
It seems that the normal illumination is the best, but that is only when we consider the “bright” scene, low color temperature and low illumination can achieve the ultimate relaxation without affecting the secretion of melatonin. The candlelight is warm and romantic and the campfire warms people’s hearts. , The night at home should have a look of life, this is a very important scene.
In scenes that require concentration and efficient work, high color temperature and high illuminance are the most effective. Of course, everything has advantages and disadvantages. People who work and live in a white light environment for a long time will suffer from different degrees of retina and iris. Damage, vision will drop sharply, and the incidence of human cataracts in glare environment is as high as 45%.
Low color temperature and high illuminance and high color temperature and low illuminance are not desirable at all. Warm yellow light is visually orange, and superimposed with high illuminance will turn into bright yellow. What will happen to yellow? It’s easy to make people feel irritable! The cold white light is visually brighter and white, and the superimposed low illuminance will become pale, miserable and timid, and it is easy to make people feel sad and depressed!
Brightness and contrast
Feel the lighting effects of these spaces, choose the most suitable ambient light scenes in your daily life in your home, and make judgments based on the simplest and most direct visual experience, without adding any other considerations.
In the case of global illumination, generally speaking, if you don’t deliberately look at the lamps, you will not feel the existence of “light”. It is like water and invisible, just like the sun is hanging in the sky and the sun is shining everywhere. You will only define this as During the day, without deliberately or visually paying attention to environmental changes caused by “light”, dark clouds covering the sun or people walking under the shade of a tree, all this will not affect or divert your focus.
Only when the sun is in the sight of people at sunrise and sunset or when the sun is too hot at noon, you will feel the presence of the sun more. At this time, the situation is a bit similar to the serious glare of the lamps, rather than the environment. Problems caused by light.
There is no two concepts of half-round lighting and block lighting. It is easy to compare and write casually. You can notice that in the scenes of half-round lighting and block lighting, light and dark are layered, but at the same time they are different. Blended, although layered, it is still a whole in the sense of space, and “light” is still the existence that will not be deliberately detected.
Even in the case of ambient light, the direct line-of-sight impact brought by accent lighting and linear lighting is very large, and it is an existence that you cannot ignore. In the home life scene, even if you do such a lighting design, In most cases, it will not turn on, and after a period of time, it will not turn on at all.
Down-illuminated point light accent lighting is better, because its light will not enter the human eye through the ceiling and the wall, but if the line lamp is not installed in the dark tank to wash the face, it will appear repeatedly on the human’s eye regardless of the ceiling on the wall. The line of sight interferes with the vision, and it is a disaster to move the eye-catching approach of the building’s facade to home life.
The application of magnetic track lights or non-main light series to accent lighting and linear lighting in the home has indeed brought the lighting scene of the home to a better height, but the requirements for lighting in the home environment and the commercial environment are opposite. In fact, the home light environment has become less healthy.
In terms of architecture, landscape and commerce, in addition to basic lighting, lighting scenes are more eye-catching, such as museum artwork display, shopping mall product display, specialty store item display, and the dotted lines and screens on the facade of the building. The self-illumination of the landscape, etc.
The home environment puts more emphasis on human settlements and people’s feelings in the light, rather than people looking at the light or paying attention to the objects at home like exhibits. The only purpose of light is to make people feel comfortable and healthy, without the need There are other functions such as attracting attention to show off.
color
I have already talked about the effects of various environmental colors on people’s body and mind. Although white light is definitely the best choice for people’s normal life and work, the continuous use of a single color in a closed environment will have more harm than good effects on human health, but in certain scenarios The short-term application under download is valuable.
It is necessary to emphasize that the color light environment must not be a common scene in daily life and work. The measurement of “spectral light and chromaticity effect” shows that if the psychological effect of white light is 100, blue light is 152, and purple light is 155. The red light is 158, which is the highest in complete darkness, at 187.
If you stay in a colorful light or dark environment for a long time, the psychological accumulation effect will cause fatigue, dizziness, loss of libido, impotence, irregular menstruation, neurasthenia and other physical and mental illnesses to varying degrees.
For specific lighting scenes, for example, when you are in love, red light, orange light and pink light will make you more passionate. For example, when you are depressed, yellow light will make everything feel less bad. When you are in a bad mood, it will be green. Light and long-wave blue light can calm people down slowly.
If you don’t find that specific wavelength, a dazzling color jumps randomly. 16 million colors are actually useless for birds. Maybe your eyes will be dangling abnormally. If you stare at a color picture for a long time, When the line of sight is turned to other places, it is also a little bit colorful. This is called visual residual, and it is not terrible. If the poisoning is too deep, it may affect the spirit and cause frequent phantoms instead of just retinal phenomena.
If only from the perspective of vision and physical and mental health, color light is definitely not a suitable choice, for example, what color light belts, etc., it is less to install at home, and color light applications in specific scenarios can be used. Adjust the white light with auxiliary colored lights to complete, such as RGBTW ceiling lights, the daily use of white light is mainly used, or just get a mobile lighting product like scene lights to build occasional scenes.
Non-visual light
When discussing home health lighting, non-visual light will occupy an important place. The ultraviolet deep ultraviolet light used for environmental sanitation, cleaning and protection can kill mosquitoes, sterilize and disinfect, and can also be used for special light cultivation of indoor green plants, and as the light of life The only mid- and far-infrared that can resonate with and resonate with the basic substances of the human body and can be absorbed by the body is widely used in the fields of medical prevention and health care.
The application of non-visual light in home health will be especially favored by women. Clean and hygienic, beauty and skin care, including various specific wavelength visible light applications, sleep aids, phototherapy, etc., have the opportunity to quickly grow into a home life. Supplement application categories.
Only talking about health, not about intelligence, but the application of non-visual light and visible light of specific wavelengths must be combined with intelligence, because it is not only to illuminate the content that can be intuitively felt, but another important factor is safety. All are closely related to data, and must have excellent controllability and a high degree of interactivity.
The application of current deep-ultraviolet disinfection products in home life is very limited. There are too many uncontrollable factors. It is necessary to add more security locks to form multiple protection mechanisms through the development of smart homes. Only when smart homes gradually become When it is more mature, stable, safe and controllable, the whole house killing scene will come.
For light applications of specific wavelengths, such as physical therapy, phototherapy, and sleep aid, there are not many safety concerns, but the presentation of the effect is too weak. It is necessary to establish a model through complete data collection and combine these specific data after the smart home system gradually matures. The application provides scene settings based on time points and time periods to achieve true and effective health and output results in data.
What is health?
The full spectrum is not listed separately. There is a reason. Compared with the above content, the home health effect claimed by the full spectrum is currently not quantified, and it stays at the story level.
As a comparison and case, the simulated sunroof lights are now attracting more attention, and they do have very good effects, but the reason is actually mainly manifested in the visual perception and psychological feelings.
The color rendering index of Coelux sunroof lights is only Ra92. Compared with the products that we often pursue with Ra95/Ra97 full-spectrum light sources, just looking at the color rendering index, it’s just so-so, but your Ra95 bulb sells for 30 yuan, Ra97 Downlights are sold for 300 oceans, and their Coelux skylight lights are sold for 3,000 euros.
You feel that you are closer to the sun, but people just pretend to have a sun, not to mention Ra92, even if there is only Ra80, the value is the same, psychological and visual health is the top level of “light health”, so user experience It is the most important thing. The full spectrum is only equivalent to giving users a psychological hint. The actual market acceptance is the same as OLED. Slowly develop.
This gives us a question, what is the real light health and what is the real health lighting scene? Doesn’t hurt the eyes and make the eyes feel comfortable, is this healthy lighting?
Let us elaborate on the current definition of human lighting: the application of lighting technology allows lighting and space to be perfectly integrated, allowing people to obtain healthy effects and comfortable feelings in physical and emotional aspects, satisfying work and life in a specific environment The personalized lighting needs of the people.
Didn’t it just mention the vision? Vision is a part of the body’s feelings, so whether human lighting or healthy lighting, it should focus on the comprehensive physical and emotional feelings of human beings as a whole. It will not be harmful and feel comfortable. Healthy, good mood, everything is good.
By the way, it’s the same for smart home. The smart home is finally presented as a scene-based content, and it should also be in line with whether a family as a whole has enough comfort for its feelings, rather than what we take for granted now as “for you”. “Good” scene, and the final decision is likely to be in the hands of a woman, who feels the same message and shakes her hand.
Let’s just talk about color temperature. There is definitely a difference between 3000K color temperature and 4000K color temperature for basic lighting in a home environment. I personally prefer 3000K color temperature. My wife’s 4000K color temperature is not white enough, so I can only follow her. It is useless. Anyway, there is no harm, if you don’t follow her, then there must be consequences, and the consequences cannot be tolerated.
Therefore, the ideal state of smart home is that users can customize the scene completely according to the common needs of the family, and the system and service providers will give reasonable or unreasonable reference suggestions during the definition process, so that users have the feeling of being in charge of their own territory. , Have a deep sense of participation, rather than being forced to accept the so-called intelligence and health.
Going back to the case of Coelux skylight lights, there is a demand in the smart home environment that is very valuable. It is related to lighting but cannot be achieved by lighting alone. That is the level of space and the depth of the scene.
During the day, when the curtains are opened, the home space is inside and outside. At night, when the curtains are pulled, it is a completely enclosed space. The human feeling is like being in a box. The Coelux skylight light breaks this feeling, so it is super For the value, if only from the perspective of increasing the spatial level and the depth of the scene, there is another product that can achieve the same effect, that is, the screen, a screen that simulates skylights and wall windows that does not affect the daily visual experience.
The right one is the best!
People have panoramic skylights in the mansion compound, sunbathing during the day and bathing in the starlight at night, you have to talk about getting a house full of lights and creating a lighting scene that simulates natural light to be healthy… In fact, it can be said that the local tyrants are not short of money anyway.
If it’s not easy to make some money, buy a few ceiling lights to illuminate the whole house, then just remind you if the illuminance is enough and the color temperature is too cold, that’s a very kind and healthy lighting design, not all When it is time, you need to pull on the scene, a scene with a single lamp and a single lamp, the ceiling lamp itself is a platform, and it is a scene of its own when it is done.
The same is true for intelligence. In the future, the society will be extremely developed and material will be greatly enriched. The intelligent linkage of the whole house is as easy and cost-effective as the lighting configured in conventional decoration today. That is an inevitable trend. But today, a simple remote switch control or a basic IOT security application is very good, as long as it can make people feel more comfortable and reasonable, it is very healthy.
If one is concerned about health itself, only the natural is the most beautiful and the best. If you listen to the sound of rain in the forest, and see the sunset over the river, then comfort is called health.
In terms of healthy lighting, there must be considerations beyond the lighting itself. Although it is for people and families, social and economic values must also be considered. It is not easy to get a bunch of functions and scenarios that exceed too many needs and there are no daily activation applications. Cause too much self-worth overdraft.
In fact, today we are talking about health light and health lighting in the general sense related to emotions, apart from the application of smart technology, what anti-glare, no flicker, high color rendering meets the basic safety and protection of Barabara are all done For brands and manufacturers to do and can do, the vicious competition in the market makes product performance and even function decline, and now the so-called healthy light health lighting is just that the market itself tends to be rational, brands and manufacturers have to turn around It’s just going up.
Although this article is already very long, if you can read it here, I strongly recommend that you read another article many years ago. At that time, it was not so euphemistic and the writing was not so careful. The 2015 text, later The official account was reissued after it was closed.
It’s not that it is not reported, the time has not come.
When the time is up, all will be healthy naturally.
Is it time now?
Healthy light is the return of quality and service!
Healthy light and healthy lighting are the return of product quality and service. They should not be regarded as new things and new journeys of the industry.
It is no exaggeration to say that the definition of products of Chinese lighting companies, especially those that have invaded the market through price wars, basically meets the following two descriptions: 1. The most basic functional requirements: can be bright; 2. The most basic design requirements : It works. In line with our description of solving the problem of food and clothing: eat enough and dress warmly.
The current quality demand growth in the Chinese market is gradually increasing, which has affected consumers’ consumption propensity. This is not to say that consumers have become more elegant, but that the ever-increasing average purchasing power supports consumers to gradually report higher performance expectations for daily necessities, especially household appliances that are less frequently purchased.
There are almost no companies in China’s lighting industry that really take product innovation as the core of their development. Among them, innovations in application fields appear from time to time, and innovations in basic technology and materials are as pure as a blank paper.
And now, it is time for all of this to return to value itself with the help of IOT technology development and smart home applications. The market chaos caused by LED applications is time to end. Under IoT lighting and smart homes, it is simply not tolerable. Water-mixed lighting products, healthy lighting and healthy light start from the return of the quality of products and services.
Mar 18, 2021
