Solved

Multiconfiguration multi-field

  • 25 January 2022
  • 7 replies
  • 663 views
Amir Rahmani

Hi All,

I have a optical imaging setup contains an objective lens and a tube lens.

I tried to define three configurations which difference among them is the distance of the rays source from the first surface.

 

Also, each of them should be at different Y position which I did through Field Data Editor.

 

But when I go for the layout and I select to see only config. 1, all fields are present. 

Am I doing something wrong here?

I appreciate it if you tell me your experience. 

 

Kind regards,

icon

Best answer by David 25 January 2022, 18:10

View original

7 replies

David
Rank
Userlevel 6
Badge +4

Hi Amir,

FLWT changes the weight given in the merit function for a field, but does not alter the field value, in this case the object height. A zero weight does not eliminate the field, it just gives it zero weight in the merit function.

To alter the object height use the YFIE operand. You can change your design to have a single field, and alter the Y value of that field by using YFIE in the multiconfig editor.

 

Kind regards, David
Amir Rahmani

Hi David,

Thanks for your answer!

 

By YFIE I can change the field height in object space. It works fine. But at image plane how could you realize the off-axis value? 

 

Kind regards,

Amir

David.Nguyen
Rank
Userlevel 7
Badge +2

Hi Amir,

 

YFIE changes the field based on its definition in the System Explorer.

 

 

If your field definition is Paraxial Image Height or Real Image Height, YFIE will modify the image height.

Let me know if this answers your question.

Take care,

 

David

Amir Rahmani

Hi David,

I mean when I change the object height using YFIE, how can I obtain the off-axis value at the image plane? I can see the off-axis shift for different object height in spot diagram, but I’m looking for the value. 

 

Bests,

Amir

David.Nguyen
Rank
Userlevel 7
Badge +2

Hi Amir,

 

I see, sorry for the confusion. You could use a Merit Function operand like REAY. If you specify the off-axis field with Hx and Hy, and keep Px and Py at zero, REAY traces the off-axis chief ray and measures its Y-coordinate. The same works with REAX along the X-axis.

Let me know if this works for you.

Take care,

 

David

Amir Rahmani

Hi David,

The REAY gives what the IMA here at the spot diagram gives? Does this represent the shift?

Bests,

Amir

David.Nguyen
Rank
Userlevel 7
Badge +2

Hi Amir,

 

It depends on the settings of your spot diagram. If your setting is Refer To: Chief Ray, then REAY like I documented will be exactly what IMA is for a given wavelength. If you use Wavelength: All I think it always displays IMA for the primary wavelength.

Here is how it looks like in an example:

I hope this makes sense.

Take care,

 

David

Reply


Community Posting GuidelinesCookie settings


Zemax Community

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）。



Privacy policy   License Agreements    Terms of use    Cookie Policy   Zemax Account Licensing Policies