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    Area of Science:

    • Optics and Photonics
    • Human-Computer Interaction
    • Display Technology

    Background:

    • Near-eye displays (NEDs) face challenges with size, weight, and power consumption.
    • Beaming display technology separates components but has limited projection area and head pose support.
    • Existing systems struggle with user mobility and display field-of-view.

    Purpose of the Study:

    • To enhance beaming display systems by extending head orientation and pose capabilities.
    • To address the limited projection area of single steering projectors (SPs).
    • To enable cooperative control of multiple SPs for improved display performance.

    Main Methods:

    • Distributed dual steering projectors (SPs) coordinated for projection onto a passive headset.
    • Defined a geometric model for cooperative control of multiple SPs.
    • Developed a calibration and projection control method for multi-projector systems.

    Main Results:

    • Achieved projection precision of 1.8–5.7 mm and a delay of 14.46 ms at ~1 m distance.
    • Extended the projectable head orientation and maintained image projection within the passive headset's area ($20\ \text{mm} \times 30\ \text{mm}$).
    • Demonstrated potential applications including multi-user support, enhanced dynamic range, and binocular presentation.

    Conclusions:

    • The dual steering projector system effectively overcomes limitations of single-SP beaming displays.
    • Cooperative control of multiple SPs significantly enhances head pose freedom and display versatility.
    • This approach paves the way for more immersive and interactive near-eye display experiences.