Retinal　projection　display　enables　the　direct　projection　of　virtual　images　onto　the　retina　through　the　pupil　center　via　a　projection　engine,　showing　promise　in　addressing　the　vergence-accommodation　conflict　in　augmented　reality　near-eye　displays.　However,　existing　RPD　architectures　universally　employ　passive　luminous　micro-electromechanical　systems　or　spatial　light　modulators,　encountering　challenges　associated　with　beam　aperture　limitations　and　structural　inflexibility.　In　response　to　these,　this　paper　presents　a　novel　micro-LED　retinal　projection　display　architecture　that　integrates　the　active　luminous　full-color　micro-LEDs　with　a　pixel-to-pixel　imaging　fiber　bundle,　effectively　subverting　conventional　RPD　designs.　Additionally,　the　flexible　fiber　bundle　brings　an　adaptable　design　that　enables　optoelectronic　separation　capabilities.　The　design　principles　and　feasibility　are　thoroughly　described　and　validated　through　simulations　and　experiments.　A　full-color　mu　RPD　prototype　is　developed,　demonstrating　sharp　imaging　across　an　extensive　focal　depth　range.　Remarkably,　the　mu　RPD　architecture　exhibits　a　groundbreaking　advancement　in　enabling　underwater　AR　displays　without　necessitating　special　waterproof　treatments,　underscoring　its　potential　versatility　and　adaptability　to　challenging　environments.　This　design　paves　a　new　way　for　practical　applications　of　NEDs　in　complex　and　demanding　conditions,　thereby　contributing　to　the　evolution　of　NED　systems.