Although the current materials and

Although the current materials and printing process we use are not optimized for optical performance, promising materials
science research has demonstrated that photopolymer waveguides can be fabricated in both planar [14] and nonplanar
[24] forms with minimal light loss. We are therefore optimistic about the possibilities for fabricating light pipes in the next generation of optically optimized 3D printers. It is worth noting that many commercial display technologies
routinely encounter significant light loss, e.g., resistive touch screens reduce display light transmission by up to 20% [11].