The factors affecting the light effect come down to no more than these: illuminance, brightness, color rendering and glare. these factors are the key to the high quality lighting effect. Reasonable illumination level, in a certain range of illumination increase, can improve the visual function.
In determining the size of the illumination required by the illuminated environment, the size of the observed object and the degree of contrast with the background brightness must be taken into account to ensure the basic requirements of ensuring the vision with a uniform and reasonable illumination. For indoor lighting, it is not the illuminance is more even the better, the appropriate illuminance change can be active indoor atmosphere, improve the person's aesthetic taste.
About the design of the indoor illumination ratio:
The evenness of indoor lighting refers to the ratio between the minimum illumination degree and the average illumination degree, which is generally not less than 0.7. The non-working area illumination should not be less than 1 / 3 of the working area illumination. The average illumination values of adjacent spaces cannot differ by more than 5 times
Scientific brightness distribution
Brightness refers to the luminescence intensity in the unit projected area of the line of sight direction, in cd / ㎡. It represents the intuitive visual perception of the brightness of an object. The brightness distribution of indoor lighting is determined by the distribution of illumination and the surface reflection ratio.
In the indoor lighting design, attention should be paid to ensure the appropriate brightness distribution. In general, a distribution that varies too much in brightness can damage people's vision, causing uncomfortable glare.
In general, the eyes accepts six levels of brightness distribution, as follows:
But in the same place, people's eyes cannot span three levels. There are two different photoreceptor systems in the human retina, namely bright vision and dark vision.
The eye for the brightness change of the outside world changes, can properly adjust the eye cone cells and columnar cells, so as to have a proper sense, this phenomenon is called "brightness adaptation".
In the lighting design, we should also pay attention to the impact of light and shade vision, such as the hotel corridor, is a connection to the passage of the lobby and guest rooms, should be set up soft low illumination light, so that guests are ready for visual transition.
In the design of commercial stores, we should also pay attention to that all the indoor lamps should be lit during the day, both to avoid the fish tank effect, and to properly adjust the guests to adapt to the light and shade environment.
Post time: Sep-02-2022
