A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (recessed inward). Among them, convex mirrors are the most common in life.
principle of convex mirrors
A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. Convex mirrors reflect light outwards, therefore they are not used to focus light. Such mirrors always form a virtual image, since the focal point (F) and the center of curvature (2F) are both imaginary points “inside” the mirror, that cannot be reached. As a result, images formed by these mirrors cannot be projected on a screen, since the image is inside the mirror
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The convex mirror manufacturing process is divided into glass molding and mirror plating. In the factory, workers cut the glass into a round shape, then put it in a customized mold, put it into the furnace, and adjust the temperature according to the required arch height. The glass softens at high temperatures and naturally sags to form a curved surface. Because it relies on softening to sag naturally, the error range of the arch height is relatively large. The inspection standard is mainly based on the qualified diameter. After cooling, the qualified products are selected and sent to the plating mirror. The colored convex mirror uses colored glass as the raw material, and the silver convex mirror uses low-iron glass as the raw material.
