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    We introduce an annularly stitched aspheric surface (ASAS) method for advanced optical designs. This C1 continuous surface enhances imaging system design freedom and achieves previously impossible optical functions.

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    Area of Science:

    • Optical Engineering
    • Surface Metrology

    Background:

    • Increasing demand for compact, lightweight optical systems with novel functions.
    • Limitations of traditional aspheric surface descriptions in design flexibility.

    Purpose of the Study:

    • To propose a new annularly stitched aspheric surface (ASAS) description method.
    • To enhance freedom and flexibility in imaging system design.
    • To enable previously unachievable optical designs.

    Main Methods:

    • Mathematical deduction and verification of C1 continuous surface formulas.
    • Development of optimization strategies and design methods for ASAS.
    • Implementation and testing of ASAS in two distinct optical systems.

    Main Results:

    • The ASAS method provides C1 continuity between adjacent zones.
    • Optimized designs demonstrate the practicability of the ASAS.
    • Achieved designs with enhanced optical functions and system performance.

    Conclusions:

    • The ASAS description method significantly increases design freedom in optical engineering.
    • This approach facilitates the creation of complex optical systems without increased fabrication challenges.