Design and analysis of polygonal mirror-based scan engines for improved spatial frequency modulation imaging

Area of Science:

• Optics and Imaging Science
• Photonics and Spectroscopic Techniques

Background:

• Spatial Frequency Modulation Imaging (SPIFI) is a structured illumination single pixel imaging technique.
• Current SPIFI implementations often use rotating modulation disks, resulting in exposure times of tens of milliseconds.

Purpose of the Study:

• To introduce a novel SPIFI architecture utilizing a polygonal scan mirror.
• To significantly decrease SPIFI line image exposure times.
• To improve resolution for long working distance optics.

Main Methods:

• Implementation of a polygonal scan mirror for SPIFI.
• Facet-to-facet measurement and correction for polygonal scan design.
• Development of a new anamorphic magnification scheme.

Main Results:

• Reduced SPIFI line image exposure times by two orders of magnitude.
• Achieved improved resolution for long working distance optical systems.
• Demonstrated a novel approach to polygonal scan mirror calibration.

Conclusions:

• The new polygonal scan mirror architecture offers a substantial advancement in SPIFI.
• This technique enables faster and higher-resolution imaging for specific optical setups.
• The advancements are crucial for applications requiring rapid, high-fidelity imaging.