Wavefront coding with Jacobi-Fourier phase masks for retinal imaging

Area of Science:

• Optical Engineering
• Biomedical Optics
• Digital Image Processing

Background:

• Wavefront coding (WFC) extends optical system depth of focus using phase masks and digital processing.
• Traditional WFC effectively manages second-order aberrations but struggles with high-order or dynamic aberrations.
• Aberrations in retinal imaging limit image quality and diagnostic capabilities.

Purpose of the Study:

• To propose and evaluate Jacobi-Fourier shaped phase masks for wavefront coding in retinal imaging.
• To demonstrate the efficacy of this approach in mitigating high-order eye aberrations.
• To assess the robustness and performance of the proposed masks against noise and image artifacts.

Main Methods:

• Design and simulation of Jacobi-Fourier phase masks for optical systems.
• Analysis of phase mask performance under various simulated eye aberrations.
• Experimental simulations to assess image quality, resolution, and noise robustness.

Main Results:

• Jacobi-Fourier phase masks enable aberration-invariant image formation in simulated retinal imaging.
• The chosen mask design effectively reduces high-order aberrations in the eye.
• The proposed method demonstrates robustness to noise while maintaining acceptable resolution and minimizing artifacts.

Conclusions:

• Jacobi-Fourier phase masks are a promising solution for wavefront coding in challenging optical systems like retinal imaging.
• This approach can significantly improve the clarity and quality of retinal images.
• The technique offers a pathway to overcome limitations imposed by dynamic and high-order aberrations.