Hi there,
In a lens design, how can I simulate modulus of the OTF as a function of focus shift (mm)?
Thanks
-Mona
Solved
Lens Modulus of OTF
Best answer by David.Nguyen
Hi Mona,
I think the easiest is to use a Analyze..Universal Plot..1-D..New.., this allows you to plot the value of a Merit Function operand against a parameter selected from a list.
You can set Independant Variable X as being the thickness of a dummy surface just before the focal plane, and have its value vary around zero, for example +/- 1 mm. You can also specify the number of steps you want to have.
Then, you can set Dependent Variable Y as the operand MTFA (I let you read the Help File about this operand and how to set it up), and you should be good to go :)
Below is the same plot from an example with the Double-Gauss sample file (attached to this post):
I hope this help.
Take care,
David
+2Hi Mona,
I think the easiest is to use a Analyze..Universal Plot..1-D..New.., this allows you to plot the value of a Merit Function operand against a parameter selected from a list.
You can set Independant Variable X as being the thickness of a dummy surface just before the focal plane, and have its value vary around zero, for example +/- 1 mm. You can also specify the number of steps you want to have.
Then, you can set Dependent Variable Y as the operand MTFA (I let you read the Help File about this operand and how to set it up), and you should be good to go :)
Below is the same plot from an example with the Double-Gauss sample file (attached to this post):
I hope this help.
Take care,
David
Reply
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）。