Lighting and Visual Color

Lighting and Visual Color
The perception of color is the result of the complex visual nervous system. It is certain that people have different perceptions of different colors. For example, red, green and blue are relatively sensitive colors. Lighting and Physiological Psychology Recently, people are paying more and more attention to the relationship between lighting and human circadian rhythms. This is mainly due to the improvement of people's living standards, the awareness of the environment, and the awareness of lighting health. In addition, intelligent lighting With the popularization of light, people's controllability of light has also improved, and the influence of light on people's physiology and psychology has also received attention, and has become a topic of concern. Visible light has several functions. The first is to form color vision and transmit information. This is the function of vision. The second also has non-visual effects, such as regulating people's circadian rhythm, improving people's alertness, etc., and also includes the influence of color temperature on people's emotions. The blue light component in visible light is closely related to the secretion of melatonin. Melatonin is related to human sleep, and blue light components can inhibit the secretion of melatonin, thereby affecting sleep. The light with low color temperature usually has less blue light components, and the light with high color temperature usually has more blue light components. In addition to affecting the secretion of melatonin, excessive blue light components may also cause retinal damage because the human eye is sensitive to blue light. But it is worth noting that before artificial lighting is used in large quantities, people will get enough blue light components in daylight to adjust people's circadian rhythms to adapt to the cycle of day and night sleep. After extensive use of artificial lighting, people spend more time indoors. The blue light component in artificial lighting makes up for the lack of blue light acquisition caused by the lack of sunlight exposure. Therefore, although excessive blue light will cause harm to people, but completely avoid blue light. It is also not advisable. Blu-ray hazard generally refers to the harm caused by too much blue light of a specified band, rather than as long as there is blue light, it will cause harm. Since light has many effects on people's emotions, physiology, and psychology, we can simulate the environment of people in sunlight to create scenes illuminated by artificial light sources. The current healthy lighting and intelligent lighting are also set up around this scene. Lighting is not only designed for illuminance, that is, the brightness of the space, but more human factors need to be considered. Such a scene can be designed. In the morning, high color temperature and high illuminance lighting can be used so that people can wake up quickly, enter the working state, and then switch to normal 4000k natural warm white light. People can stay in this color temperature for a long time. Maintain a good state with relatively high efficiency, and then use low color temperature and low illumination light at noon, so that people can have Chinese food in a relaxed and pleasant environment, and in the afternoon, the color temperature and illumination gradually increase, allowing people to enter the working state. When it's time to get off work, due to the crowded crowd and complicated traffic conditions, you can use higher color temperature and illuminance to increase people's alertness in a short time to ensure safety. When returning home after get off work, people need to relax emotionally, so warm-toned white light is generally used. Before dinner and sleep, it is advisable to use light with low color temperature and low illumination, so that people can eat more comfortably and it is also beneficial to people's sleep. All of these can be adjusted manually, but with the development of sensing technology, the popularization of sensors, the development of intelligent control technology, the development of high-speed information networks, and the advancement of light source technologies such as LEDs, these can all be realized automatically without manual intervention. control.