I build a simple model with a Source Ellipse, two paraxial lens with the same f and spaced 2*f apart. So in theory from Source Ellipse are first focused by the first lens and then we can get a plane wave after the second lens. If we put a detector after the second lens, all rays hitting the detector should have the same coherent phase, but that's not the case.
Solved
Why paraxial lens cannot simulate optical path difference and resulting phase difference accurately?
Best answer by David
The issue involved, along with a solution, is discussed here.
details are shown as following
Because I need to analyze the wavefont of a flys eye array, I plan to combine many paraxial lenses as an array. However this problem shocked me😥
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
Need more help?
To Chinese users:
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws ( e.g., Important Data, National Core Data, etc.).
不要提供任何受适用法律，包括中华人民共和国的网络安全和数据安全法限制的信息或数据（如重要数据、国家核心数据等）。