What is the purpose of the line on the rearview mirror?

1 Answers
LaZachary
07/29/25 7:15pm
The function of the line on the rearview mirror is: the glass on the outer side of the line changes its curvature, resulting in two different curvatures on the same reflective surface of the rearview mirror. This design provides a wider field of view for the rearview mirror, reducing blind spots while driving and lowering the likelihood of traffic accidents. Additional information: 1. If there is such a line on the rearview mirror, it is called a dual-curvature rearview mirror, meaning the inner and outer sections of the mirror have different curvatures. 2. This line is vertically positioned, located one-third of the way from the side closest to the vehicle body. 3. If there is no such line, it is a standard rearview mirror. However, it can be upgraded to a "dual-curvature rearview mirror" by adding a "convex lens" to the mirror. This modification can also expand the rearward field of view, which is beneficial for reversing or observing traffic conditions behind the vehicle.
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