+4I don’t see any tools to evaluate a line focus…
The best I can do right now is extract the OPD from the text of the OPD fan. I can then evaluate the RMS WFE and even FFT it myself to produce an aberrated PSF.
Is there a better way?
Best answer by Sandrine Auriol
Hi Brian,
I had a look and basically what we have been recommending users in the past is to utilize a Paraxial XY surface so that you can focus the rays which are not coming to a focus while your focusing rays are unaffected.
Below is the quote in full:
“Because the system is afocal in one direction and focal in the other, you will need to evaluate this in two configurations. The way to handle this is to use a Paraxial XY surface to create each configuration. In one config you set focal mode, and set the paraxial XY to focus the afocal component, and vice-versa in config 2. You can then look at each slice in its correct focal/afocal units.”
+2Hi Brian,
I don’t know if this helps, but from what I can see in the implementation of the OPD Fan in the ZOS-API, it returns a Data Series. That means, if you use the ZOS-API, you don’t need to parse a text-file, you could directly read it from the analysis (much faster). I had the issue in the past that some analysis would return a Data Series which was basically empty, and I’m not on my work laptop so I can’t check for this one, but in general when an analysis has the Data Series, usually it isn’t empty.
Hope this helps, and take care,
David
+4David,
Thanks for the tip. I’m well versed in the ZOS-API, so I can use that as you described.
Best,
Brian
Hi Brian,
I had a look and basically what we have been recommending users in the past is to utilize a Paraxial XY surface so that you can focus the rays which are not coming to a focus while your focusing rays are unaffected.
Below is the quote in full:
“Because the system is afocal in one direction and focal in the other, you will need to evaluate this in two configurations. The way to handle this is to use a Paraxial XY surface to create each configuration. In one config you set focal mode, and set the paraxial XY to focus the afocal component, and vice-versa in config 2. You can then look at each slice in its correct focal/afocal units.”
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
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）。