Hybrid non-sequential modeling of an image mapping spectrometer

Area of Science:

• Optical Engineering
• Spectroscopy
• Instrumentation Science

Background:

• Image mapping spectrometers (IMS) are snapshot imaging spectrometers.
• IMS systems comprise multiple array components like image mappers and lens arrays.
• Designing complex optical systems like IMS presents significant challenges.

Purpose of the Study:

• To propose a hybrid non-sequential modeling method for image mapping spectrometers (IMS).
• To design and evaluate a high-performance collimating lens for IMS.
• To validate the modeling method through experimental verification.

Main Methods:

• Developed a hybrid non-sequential modeling approach utilizing spatial periodicity of array components.
• Built a complete optical model in Zemax with minimal input parameters.
• Designed a collimating lens with large relative aperture, long working distance, and low aberration.

Main Results:

• The proposed modeling method allows for efficient system design and optimization.
• The designed collimating lens exhibits excellent optical performance within the IMS model.
• Experimental assembly and testing confirmed the validity of the modeling method.

Conclusions:

• The hybrid non-sequential modeling method is effective for IMS design.
• The developed collimating lens meets the performance requirements for compact IMS.
• The study validates the proposed modeling technique for systems with multiple array components.