Why are living conditions getting better and better, and the children’s eyeglass lenses are getting thicker and thicker? Why is the home brightly lit, but you are still as nervous as in the office? Why is there a table of sea and seafood, but you have no appetite? Why are the clothes in the mall colorful, but when I buy it home, I feel that the clothes are dull? Why do my father and mother always lose sleep at night? ...
The key to the problem is: lighting!
With the improvement of people's living standards, the indoor space environment no longer uses only one lamp to meet people's basic needs for lighting, but uses "light" and the indoor environment to form an overall artistic style to create a comfortable visual light environment. Reasonable lighting not only satisfies people's basic needs for brightness, but also creates different environmental atmospheres according to different space scenes, and should also meet people's psychological and physiological needs.
Is your use of light safe?
Light radiation is closely related to human health, which has been proven by recent studies in photobiology. In the case of proper irradiation, whether it is ultraviolet light, visible light or infrared light, it can have a positive physiological impact on the human body. However, in the case of insufficient or excessive illumination, the effects of optical radiation are either negligible or there may be potential hazards. For example, ultraviolet light can cause cataracts, retinal variability, etc.; blue light can cause irreparable damage to cells in the eye.
Unconsciously affected by light, have you found out?
The effect of light on body rhythm: The hormone produced in the human body has a sleep hormone melatonin. When people are in a dark environment, the secretion of melatonin will increase. On the contrary, in the light of white high illumination, the amount of secretion will suppressed. People regulate the body rhythm by increasing or decreasing the amount of melatonin secretion. As shown in the figure below, the amount of melatonin secreted increased during our sleep. That is to say, even at night, if you stay in a white light and high illumination space, the sleep hormone melatonin cannot be normally secreted, and people cannot get normal sleep.
Changes of sleep hormone melatonin content at different color temperatures at different times
The effect of illuminance: Under higher illumination, the degree of wakingness of the person is significantly improved, thus having a better working condition. When the light is low, people's feelings of sweetness and bitterness become dull. Therefore, when studying, working, and cooking, giving a higher illumination will help to accomplish the task better.
The change of the waking degree of night shift workers with working hours under different illumination levels
The effect of color temperature: high color temperature illumination can inhibit the secretion of melatonin, and improve the level and mood of cognitive tasks. Low color temperature lighting is easy to relax, and the amount of saliva that helps digest food is increased. Therefore, eating should be done under warm light. (The color temperature under natural light is around 5500K)
For a common example in life, which one of Figure 1 and Figure 2 seems to make you more appetizing?
The food is the same, the difference is the light. Figure 1 uses a high color temperature (white light) light, and Figure 2 uses a low color temperature light. Experiments have shown that low color temperature (warm light) light is more likely to relax people and promote the secretion of digestive juice. High color temperature (white light) light will inhibit the gastrointestinal motility and make you poor appetite. Therefore, eating in a low color temperature (warm light) environment not only allows you to relax, make food look more beautiful, make you more appetizing, but also reduce the burden on the stomach and help digestion.
For another example, if you wake up in the morning or go out to work in the evening, if you see yourself in the mirror, you will be well dressed and well dressed. Is it good? When making up, the light is the most important, the ceiling headlights must be turned on, but never use it as the only light source, because this will make your face look heavy, you must install two mirror headlights from the face Projected on both sides as a supplement.
Nowadays, many people have to go into different occasions every day. Different lights have a great influence on the color of clothes: First, you should use a light source with better color rendering (color rendering is above 90). As shown below.
The picture on the left is taken under a light source with high color rendering, and the picture on the right is taken under light with low color rendering.
In addition, the warm light source makes the colors such as blue, purple, and green lose their true colors. The cool light source (white light) makes the warm colors (red, orange, etc.) dark, while the cool colors (blue, green, etc.) are brighter and more vivid. So what exactly is the color of the clothes? Use tonable light in front of the mirror to adjust the color of the light according to different occasions. what to wear? You decide!
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