• Patent

Method and apparatus for displaying speech information


McCartney, M. (1983). IPC No. U.S.Method and apparatus for displaying speech information (Patent No. 4414431.)


A device for producing images of a plurality of speech information symbols associated with speech sounds produced by a speaker into the field of view of a hearing-impaired person with one or more light emitting or illuminated arrays mounted paraxially with the viewer's line of sight on a transparent plate which subtends and mounts an adjacent eyeglass lens. A mirror is mounted on the lens to produce a magnified image in the field of view and reflect the image back to the viewer. The interior surface of the lens may be coated to form the mirror or spherical dimples may be ground into the surface before coating and the coated dimples then filled with a material having substantially the same refractive index as the lens.