3D Tactile Tiles Optimization for Blind and Visually Impaired People

This paper discusses the Braille alphabet, its development and modernization during the years, and the need for its use. The focus is on 3D printing and its implementation for users with impaired vision or completely blind. An analysis was made with pre-prepared 3D printed samples provided to the blind and visually impaired users. The aim of the presented samples is focused on the tactile feedback and perception of the participants. Factors such as roughness, contour height, contour width and perception was examined. The contour height was set to 0.5 mm. From the presented different contour widths to the participants, the most appropriate result was 1 mm. The advantages and disadvantages of different samples are reported.