Diffraction light analysis method for a diffraction grating imaging lens.

Area of Science:

• Optics and Photonics
• Optical Engineering

Background:

• Diffraction grating lenses are crucial optical components.
• Understanding light distribution, including diffraction orders and striped patterns, is essential for lens design.
• Existing methods may not fully capture complex diffraction phenomena.

Purpose of the Study:

• To develop a novel analysis method for diffraction light in grating lenses.
• To characterize striped diffraction light and its impact on optical systems.
• To provide a simulation tool for optimizing grating lens performance and reducing flare.

Main Methods:

• Developed a new analysis method considering diffraction grating step structure.
• Simulated each-order and striped diffraction light simultaneously.
• Validated the simulation against experimental results.

Main Results:

• Identified and characterized striped diffraction light as a key component of diffraction.
• The developed method accurately simulates aberrations, diffraction orders, and striped light.
• Demonstrated high accuracy through comparison with experimental data.

Conclusions:

• The new analysis method offers high accuracy for simulating diffraction grating lens light.
• This method facilitates the optimization of diffraction grating lenses for reduced flare.
• The findings contribute to improved design and performance of optical systems utilizing diffraction gratings.