Is Rear View Mirror Convex Or Concave

By | March 11, 2021

Is Rear View Mirror Convex Or Concave?

Have you ever wondered why rear view mirrors are convex? It's not just a matter of style; there's actually a scientific reason behind it. Convex mirrors have a curved surface that bulges outward, unlike concave mirrors which curve inward. Let's delve into the advantages and disadvantages of convex mirrors compared to concave mirrors when it comes to rear view applications.

Advantages of Convex Rear View Mirrors

Wider Field of View:

Convex mirrors provide a wider field of view compared to concave mirrors of the same size. This is because the curved surface of the convex mirror allows it to capture a larger portion of the area behind the vehicle. This wider field of view helps drivers to see more of their surroundings, reducing blind spots and making it easier to spot potential hazards.

Reduced Distortion:

Convex mirrors have less distortion than concave mirrors. Concave mirrors can distort objects, making it difficult to accurately judge distances and the size of objects. Convex mirrors, on the other hand, produce a more accurate representation of the scene behind the vehicle, making it easier for drivers to make informed decisions.

Disadvantages of Convex Rear View Mirrors

Smaller Images:

Because convex mirrors have a wider field of view, they produce smaller images of objects compared to concave mirrors. This means that objects appear farther away than they actually are. While this can make it easier to see a wider area, it can also make it more difficult to judge distances accurately.

Curved Image:

The curved surface of the convex mirror creates a curved image, which can be disorienting for some drivers. Objects may appear to be closer to the sides of the mirror than they actually are, which can be misleading and potentially dangerous.

Why Not Concave Mirrors?

While concave mirrors have a narrower field of view and more distortion, they can magnify objects, making them appear larger and closer than they actually are. This would be highly undesirable for rear view mirrors, as it could lead to drivers overestimating the proximity of vehicles behind them and making dangerous maneuvers.

Conclusion

In conclusion, convex rear view mirrors are used because they provide a wider field of view, reduced distortion, and are less likely to disorient the driver. While they have some drawbacks, such as smaller images and a curved image, these are outweighed by the safety benefits they provide. Concave mirrors, on the other hand, are not suitable for rear view applications due to their narrow field of view, high distortion, and potential to magnify objects.


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