How to work in finite conjugates?

[medix]

I need to model a system with finite conjugates, and I see that you have set infinite conjugates as the default, specifically in the function 'refresh paraxial' where you have set 'object_position' to -10000000. Changing this number only affects the calculated image position, but not the analysis of the spot diagram at the new image position (or the drawing of the lens system).

Can you tell me how to modify the functions to allow finite conjugates? I'm sure it's in the code somewhere, but so far I have not found a solution..

Thanks!

[Sterncat]

Hi, actually I only programmed an infinite conjugate condition and I don't do finite one yet. I am not figuring out that yet lol. Sorry for that, but programming wise, I think the process is like: you build your ray gird in your entrance pupil, then calculate objective field to entrance pupil ray angles and positions, and then do ray tracing starting from entrance pupil. Thanks! Xing medix <notifications@github.com> 于2020年8月14日周五 上午5:40写道：

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I need to model a system with finite conjugates, and I see that you have set infinite conjugates as the default, specifically in the function 'refresh paraxial' where you have set 'object_position' to -10000000. Changing this number only affects the calculated image position, but not the analysis of the spot diagram at the new image position (or the drawing of the lens system). Can you tell me how to modify the functions to allow finite conjugates? I'm sure it's in the code somewhere, but so far I have not found a solution.. Thanks! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#38>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAUIRBI5TNMWF4GJRI27LG3SAUWENANCNFSM4P7OX67A> .

[antonysigma]

Can we add an imaginary eye piece acting as an ideal thin lens? Could you show me how a thin ideal lens can be implemented in the library?

Here is the illustration. It should solve @medix 's problem as well.

[Sterncat]

Hi, Sorry for the late reply, it has been a while I didn't update the codes. For the Ray tracing module, I built it mainly based on CodeV. So if you want to build an ideal thin lens, I suggest to try just use 0 as thickness, ray tracing module should work, thanks! Xing

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On Fri, Aug 4, 2023 at 12:20 antonysigma ***@***.***> wrote: Can we add an imaginary eye piece acting as an ideal thin lens? Could you show me how a thin ideal lens can be implemented in the library? Here is the illustration. It should solve @medix <https://github.com/medix> 's problem as well. [image: j_aot-2019-0002_fig_007] <https://user-images.githubusercontent.com/12185630/258293916-6b564b1e-d07e-4c13-bea5-aa0fc7d46293.jpg> — Reply to this email directly, view it on GitHub <#38 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAUIRBJSGGNG6KV6CWSMAEDXTR2BTANCNFSM4P7OX67A> . You are receiving this because you commented.Message ID: ***@***.***>

[antonysigma]

Thanks @Sterncat . I went down the rabbit hole to implement a thin lens, before I gave up.

Here's the changes I made to the opticspy source code: #49 .

I eventually moved on to the RayOpt project, because they have the finite conjugate system support.

[Sterncat]

I took a look to the code and based on my memory, I didn't develop the finite conjugate function. medix ***@***.***> 于2020年8月14日周五 20:40写道：

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I need to model a system with finite conjugates, and I see that you have set infinite conjugates as the default, specifically in the function 'refresh paraxial' where you have set 'object_position' to -10000000. Changing this number only affects the calculated image position, but not the analysis of the spot diagram at the new image position (or the drawing of the lens system). Can you tell me how to modify the functions to allow finite conjugates? I'm sure it's in the code somewhere, but so far I have not found a solution.. Thanks! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#38>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAUIRBI5TNMWF4GJRI27LG3SAUWENANCNFSM4P7OX67A> .