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Design method of an off-axis reflective aperture-divided optical system
Applied Optics
|September 22, 2025
Summary
This study introduces a novel optical system design method for multi-channel imaging, integrating reflective and aperture-divided optics. The new approach simplifies structure and enhances real-time imaging performance for advanced optical applications.
Area of Science:
- Optical Engineering
- Imaging Systems
- Photonics
Background:
- Aperture-divided optical systems enable real-time, multi-channel imaging.
- Current refractive systems face challenges with complexity and narrow wavelength bands for multi-channel demands.
Purpose of the Study:
- To propose a modified design method combining off-axis reflective and aperture-divided optical systems.
- To achieve higher integration and simplified structures for multi-channel optics.
Main Methods:
- Integrated optical layout and local detail optimization strategy.
- Construction of an integrated optical system using Wassermann-Wolf differential equations for the relay group and a telescope objective.
- Gradual establishment of a sub-aperture system with distinct local surface regions.
Main Results:
- Demonstrated feasibility and efficiency of the proposed design method.
- An integrated system (F-number 1.6, 130 mm entrance pupil) was designed.
- The aperture-divided system achieved near-diffraction-limited imaging performance (3-5 µm, 33 lp/mm).
Conclusions:
- The proposed design strategy offers broad applications for multi-channel imaging.
- This method provides valuable insights into new imaging technologies.
- The integrated design simplifies structure while maintaining high imaging performance.
