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Design a lens in a lens

  • February 24, 2021
  • 1 reply
  • 26 views

I have a question.
The lens of (A) is BK7.
The lens of (B) is SF3.
I designed the (B) lens inside the (A) lens. That is my mistake.

At this time, which of the (A) and (B) lenses affects the light rays? (I am curious which lens affects the refraction of light rays.)

I have attached the image.

mistake.png
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1 reply

David.Nguyen
Luminary
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  • Luminary
  • 1123 replies
  • February 24, 2021

Hi Suhwan,

Its difficult to say for certain without an example file, but I'd say both lens can affect the light rays.

OpticStudio uses a nesting rule, which can be found in the Help file, that states:

If a ray strikes more than one object at the exact same point in space; the last object listed in the NSC Editor determines the properties of the surface or volume at that point.

In other word, if the inner lens comes later in the NSC Editor, then both lenses affect the rays. Otherwise, only the largest lens affect the rays, I think.

You might want to have a look at this knowledgebase article:

https://my.zemax.com/en-US/Knowledge-Base/kb-article/?ka=KA-01439

Take care,

David


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