The culprit of urban night traffic accident -- excessive Night Glare

Glare is the main form of light pollution in the city, when the brightness level is greater than the eyes can adapt to the field of high brightness or luminance contrast of objects like, there will be trouble, not comfortable, in addition to low visibility phenomena such as interference in the physiological and psychological, even hurt. We know that it can be divided into two categories: discomfort glare and disability glare.

Due to the excessive urban lighting, resulting in frequent traffic accidents at night

When encountered uncomfortable glare, as the eye will appear discomfort caused by physiological reasons for this discomfort is mainly due to the high brightness light stimulation, make the pupil, or because of the cornea and lens intraocular tissue scattering light screen formed in the eye, or by high brightness due to retinal stimulation. However, although not comfortable, does not necessarily reduce the visibility of visual objects. For example, the surface of residential, classroom and office interior decoration or furniture material is light, the light at the top, and the formation of specular reflection, make the eyes uncomfortable; at night to sleep time, but the room outside the window, the light is very bright, make people unable to sleep in the classroom; lamps installed without adequate shielding angle see, as long as the head teacher, saw a row of light emitting tube is not comfortable and distraction. These uncomfortable glare interference, almost all of us will encounter.

In the event of the loss of glare, the visibility of the visual object will be reduced, and the visual function will be reduced. For example, if not before the steel workers in the blast furnace with protective glasses, freshly baked hot metal will the people eyes burn; some lights no light interception measures, lights glare make drivers and pedestrians in the eyes can not see the direction; some drivers driving at night, long time open headlights, pedestrians across the road for a time also do not see what clearly, the eyes must be through a series of efforts will gradually see the object, which is the interference of disability. Special remind is, LED flashlight due to its high brightness, strong direction, do not directly hand lightning of human face irradiation; laser pointer is clear on the projection screen, but not to the human eye exposure, so as to avoid the eye burns, reduce or even loss of visual function.

In short, we should take measures to limit glare pollution, build a harmonious environment, as far as possible to avoid glare interference.

Unreasonable lighting fixtures, resulting in excessive glare of the city

Experts call for less urban glare

Knowledge of lighting technology

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