1. The type of outside mirrors
plane mirror the mirror, the mirror is flat as the name suggests, is expressed by the term “infinite surface radius of curvature R” which is generally the same household mirrors, to obtain the same visual size image.
external mirror is a convex mirror, mirror-spherical shape, having a curvature radius of different size, its image, but larger than the visual field of view smaller, if the role of the camera “wide angle lens” in.