Versatile dual-mode augmented reality display system based on bifocal holographic micromirror array and active beam steering array using a multitask deep neural network

초록

We propose a versatile augmented reality display system that integrates a bifocal holographic micromirror array and an active beam steering array, tailor-made to meet specific structural and functional requirements of the structure. The active beam steering array, featuring micro deflectors and an electro-polarizer, enables precise light control and rapid imaging mode transitions. The bifocal holographic micromirror array, fabricated using holographic wavefront printing, combines concave micromirrors with fixed focal length and planar micromirrors with infinite focal lengths. A multitask deep neural network estimates depth information and isolates primary objects in input images with fine accuracy and rapid computation. In two-dimensional mode, planar micromirrors reflect the masked object's image directly, while in three-dimensional mode, concave micromirrors reconstruct three-dimensional images from generated elemental image sets. By incorporating switchable imaging modes, the proposed system offers a compelling dynamic and immersive visual experience with minimal structural complexity, without increasing the overall weight and bulkiness of the augmented reality display system.

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