A technique for flicker reduction in a volumetric three-dimensional display with a static image space

Abstract

An ongoing public-private research partnership has demonstrated a three-dimensional (3D) volumetric display system that incorporates a static image space. The 3D display system uses micro-electro-mechanical systems (MEMS) based mirror arrays to direct infrared light beams into an image space that exhibits two-step, twofrequency upconversion. A number of candidate image space materials have been evaluated, with 2%Er: NYF 4 appearing to be most promising at this stage of the research. In this paper, the authors build upon prior work by investigating the response time of 2%Er:NYF4. In addition, a new technique for reducing flicker in the 3D images is described. The technique includes interlacing the 3D image slices in a way similar to the interlacing that occurs in the generation of television images. Adopting this technique has the potential to reduce the flicker that is presently evident, thereby improving the overall 3D image quality.