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Home > News > Do you know the optical principle of bicycle taillights?

Do you know the optical principle of bicycle taillights?

31 views Published by admin Apr 11,2019

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Bicycle taillights are the lamps and lanterns which are installed in the rear of the bike. Its optical principle is composed of small plane mirrors that are orthogonal to each other.The reflection of light will reflect the light from the car, neon lights and other light sources to the driver, so that the driver can see the cyclist in front of him, thus avoiding traffic accidents. The details are as below:

The cross section of the bicycle taillights is an isosceles right triangle prism called a total reflection prism. The isosceles right triangle ABC represents a cross section of a total reflection prism, and its two right angles AB and BC represent two perpendicular sides of the prism.If light to AB, straight along the direction of the original into a prism, shot to the AC side, due to the Angle of incidence (45 °) great light from the glass into critical Angle of the air (42 °), will occur on the surface of the AC total reflection of light, along the direction of the hanging as to BC from prism.If the light is perpendicular to the surface of AC, it will be fully reflected on both sides of AC and BC after it is shot into the prism in the original direction. Finally, it will be shot out of the surface of AC in the opposite direction when it is incident. This principle is used in many places in our life. For example, bicycle taillights make use of this principle.

Bicycle taillights

With the development of the society, LED bicycle taillights are widely used, because there are more and more vehicles on the road, the weak reflection is not enough to attract the attention of passing vehicles, so now there are some battery energy, as well as the lighting of LED lights will give off light as a safety warning, to ensure more safety.

bicycle taillights

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