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What is the function of the rearview mirror?

1 Answers

MatteoDella

07/30/25 1:17am

The rearview mirror, also known as the side mirror, serves the following purposes: 1. For the convenience of the driver's operation, to prevent traffic safety accidents and ensure personal safety, rearview mirrors must be installed in cars, and all rearview mirrors must be adjustable in direction. The driver can directly obtain external information about the rear, side, and lower parts of the car while seated in the driver's seat. 2. The rearview mirror has a field of view issue, which refers to the range that the mirror surface can reflect. The industry has proposed three elements of the field of view: the distance between the driver's eyes and the rearview mirror, the size of the rearview mirror, and the radius of curvature of the rearview mirror. 3. When the distance and size of the rearview mirror are the same, the smaller the radius of curvature of the mirror surface, the larger the field of view reflected by the mirror. When the radius of curvature of the mirror surface is the same, the larger the size of the mirror surface, the larger the field of view reflected by the mirror. Classification by installation location: 1. Interior rearview mirror: The interior rearview mirror is a mirror that allows the driver to confirm the rear situation without significantly changing the forward line of sight while driving. 2. Exterior rearview mirror: Passenger cars generally install the exterior rearview mirror on the door. In Japan, it is also installed on the fender. 3. Under-mirror: The under-mirror allows the driver to see areas outside the front and rear wheels under the car body in the mirror directly in front of the driver's seat. It enables the driver to see whether there are people or obstacles near the front and rear wheels and the side of the car when reversing or starting forward, to avoid injuring people, damaging objects, or the vehicle.

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