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2026

On-Chip Silicon-Based Micro-Reflectors for Augmented Reality Projection Displays

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The team led by Enguo Chen at Fuzhou University has proposed a pixel-by-pixel on-chip silicon-based micro-reflector device (SMRD) for micro-light-emitting diodes (µLEDs), which integrates both light-extraction enhancement and beam-shaping functions within a scalable architecture. Simulation and experimental results demonstrate that the SMRD reduces the emission divergence angle from ±70.5° to ±39.4°, increases the luminous flux within the ±20° cone by approximately 64%, and suppresses pixel crosstalk to 4.75%. In addition to these device-level improvements, the authors have also built a near-eye display prototype that integrates the µLED/SMRD device with a projection lens, a beam splitter, a metal mask, and a camera serving as an artificial human eye, thereby further validating its system-level performance. Consequently, the SMRD offers a compact and manufacturable solution for realizing high-efficiency, miniaturized augmented-reality (AR) projection engines. This work lays the foundation for light-field control based on µLEDs and holds significant implications for next-generation near-eye displays, spatial light modulators, and advanced photonic systems.

The research findings were published on January 7, 2026, in Advanced Science under the title “On-Chip Silicon-Based Micro-Reflector Pixelated with Micro-Light-Emitting Diodes for Augmented Reality Projection Displays.”