How good is your lens? Assessing performance with MTF full-field displays

Area of Science:

• Optical Engineering
• Image Quality Assessment

Background:

• Advanced optical systems demand rigorous performance evaluation.
• Current Modulation Transfer Function (MTF) testing methods may not fully capture performance across the entire field of view.

Purpose of the Study:

• To present a comprehensive method for evaluating and displaying the MTF of lenses over their full rectangular field of view.
• To enhance the accuracy of optical system characterization, particularly for misaligned systems.

Main Methods:

• Utilizing commercially available MTF test stations for data acquisition.
• Developing custom software for plotting and visualizing MTF results.
• Measuring MTF across the entire rectangular field of view, not just limited points.

Main Results:

• Demonstrated a method for full-field MTF evaluation.
• Showcased improved accuracy in characterizing misaligned optical systems compared to traditional methods.
• Provided examples illustrating the performance of both well-centered and poorly centered systems.

Conclusions:

• The presented method offers a more thorough and accurate assessment of lens performance.
• Full-field MTF analysis is critical for understanding and correcting aberrations in complex optical designs.
• This approach provides valuable insights for optical system design and quality control.