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Broadband and Wide Field-of-View Refractive and Meta-Optics Hybrid Imaging System for Mid-Wave Infrared.

Bo Liu¹, Yunqiang Zhang², Zhu Li³

¹Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China.

Nanomaterials (Basel, Switzerland)

|April 11, 2025

Summary

We developed a compact, hybrid optical system for wide field-of-view (FOV) infrared imaging. This innovative design achieves exceptional performance across a broad temperature range, advancing compact optical systems.

Keywords:

hybrid imaging system metasurfaces mid-wave infrared wide field-of-view

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Area of Science:

Optical Engineering
Infrared Imaging Technology
Metamaterials in Optics

Background:

High-quality imaging in wide field-of-view (FOV) applications presents significant challenges.
Existing systems often struggle with performance degradation at extreme temperatures and large FOVs.

Purpose of the Study:

To design and analyze a novel hybrid refractive and meta-optics imaging system for the mid-wave infrared (MWIR) spectrum.
To achieve a wide 178° FOV with high-quality imaging performance in a compact form factor.

Main Methods:

The system integrates three refractive lenses with two metasurfaces (circular polarizer and phase element).
Detailed analysis using modulation transfer function (MTF) curves and spot diagrams was performed.
Performance was evaluated across a wide temperature range (-40 °C to 60 °C).

Main Results:

The hybrid system achieved an ultra-wide 178° FOV.
Exceptional imaging performance was maintained across the specified temperature range.
The system's compact design has a total length of only 29 mm.

Conclusions:

The proposed refractive and meta-optics hybrid system offers a viable solution for high-quality, wide FOV MWIR imaging.
The design demonstrates potential for adaptation to other wavelengths and applications.
This advancement contributes to the development of high-performance, compact optical systems.