System for enabling poorly sighted persons to view small print has a magnifying lens on a support over the print and with a perforated screen held over the lens

摘要

A system which enables a poorly sighted person to view small pr9nt, and small items, has a magnifying lens held over the print by an adjustable stand. A perforated screen is held over the lend, also on an adjustable support. The perforations are in an array with progressively varying hole diameter. The spacing of the rows is not less than the diameter of the pupils of the viewer. The whole system is adjustable to the requirements of each particular user, and to the degree of magnification required.