Design of the varifocal and multifocal optical near-eye see-through display

Abstract

Optical near-eye see-through displays have a wide range of applications in medical, education, entertainment and other fields. However, most existing displays present virtual stereoscopic images at a fixed focal plane, resulting in vergence-accommodation conflicts. In this study, a see-through display is presented with addressable depth cues and a field of view of 66° to reduce dizziness and vertigo problems. The presenting depth of the virtual images can be successfully varied by changing the curvature of the liquid lens from 25 mm to infinity in this design. Experiments have been conducted based on a self-fabricated optical system to demonstrate the proposed optical design and analyze the optical performance for further improvement.