Optical Surfaces Ltd. is a leading international supplier of concave and convex spherical mirrors made to your exact specification. A spherical mirror is a mirror which has the shape of a piece cut ...

Plano concave mirror is a mirror which is arrange reflective coating on the concave surface of Optical glass plano concave spherical lens substrates.The diameter, thickness, focal length or radius of ...

When visitors look at it from one side all appears normal but when they walk around to the other they appear upside down because it is a concave mirror.