The rearview mirror is located on the left and right sides of the car's head and in front of the car's interior. The rearview mirror reflects the rear, side and bottom of the car, which enables the driver to see these positions indirectly. It plays the role of "the second eye" and enlarges the driver's visual field.
Automobile rearview mirror is an important safety part, its mirror, shape and operation are quite exquisite. Rearview mirror quality and installation have corresponding industry standards, can not be arbitrary.
Rearview mirror is divided into external rearview mirror, lower rearview mirror and internal rearview mirror. The rear view mirror reflects the rear side of the car, the lower rear view mirror reflects the front and bottom of the car, and the inner rear view mirror reflects the rear and interior of the car. The mirror structure will be different if the use is different. Generally, there are two kinds of rearview mirrors. One is a plane mirror. As the name implies, the mirror is flat. In terminology, "the radius of curvature R of the surface is infinite", which is the same size as the general household mirror. This kind of plane mirror is often used as an inner rearview mirror. The other is convex mirror, which is spherical and has different radius of curvature. Its image is smaller than that of visual acuity, but its field of vision is large, like the role of a camera "wide-angle mirror". This convex mirror is often used as an external rearview mirror and a lower rearview mirror. Cars and other light passenger cars are generally equipped with external rearview mirrors and internal rearview mirrors. Large commercial vehicles (buses and trucks) are generally equipped with external rearview mirrors, lower rearview mirrors and internal rearview mirrors.