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Abstract
The Maxwellian view offers a promising approach to overcome the vergence-accommodation conflict in near-eye displays, however, its pinhole-like imaging naturally limits the eyebox size. Here, a liquid crystal polymer-based Dammann grating with evenly distributed energy among different diffraction orders is developed to enlarge the eyebox of Maxwellian view displays via pupil replication. In the experiment, a 3-by-3 Dammann grating is designed and fabricated, which exhibits good efficiency and high brightness uniformity. We further construct a proof-of-concept Maxwellian view display breadboard by inserting the Dammann grating into the optical system. The prototype successfully demonstrates the enlarged eyebox and full-color operation. Our work provides a promising route of eyebox expansion in Maxwellian view displays while maintaining full-color operation, simple system configuration, compactness, and lightweight.
Highlights
Fan-Chiang, K.-H.; Wu, S.-T.Augmented reality (AR), virtual reality (VR), and mixed reality (MR) near-eye displays are emerging rapidly [1] because of their potential to revolutionize entertainment, education, engineering, and healthcare
We propose and demonstrate a Maxwellian view near-eye display with an enlarged eyebox achieved by viewpoint replication
With an improved fabrication fabric tion technique, a Dammann grating with more uniform higher orders (e.g., 3-by-5) will an intriguing choice for further enlarging the eyebox
Summary
We propose and demonstrate a Maxwellian view near-eye display with an enlarged eyebox achieved by viewpoint replication. The use of a Dammann grating in a Maxwellian view near-eye display can offer full-color imaging and enlarged eyebox, while keeping a compact size and lightweight. Crystals 2021, 11, 195 use of a Dammann grating in a Maxwellian view near-eye display can offer f aging and enlarged eyebox, while keeping a compact size and lightweight. By contrast, generating mu viewing points in space the same time can be same much time easier, butbesome of easier, the optical ingatpoints in space at the can much but power some of the op will be inevitably lost.will They either displays with simple systems have been reported [15,16]. Either suffer from single color or operation, image artifacts, or limited eyebox ex
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