Hi
I am trying an off-axial mirror in sequential mode.(pic1)
I refers to the KB here(a little )
https://support.zemax.com/hc/en-us/articles/1500005486541-How-to-model-an-off-axis-parabolic-mirror
but met this problem , the mirror tilted, when I added hard aperture to it.(pic2→pic3)
I attached the data ,and could you give me some hint?
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/40e6978e-0d74-403b-8a65-66b4fc12d0bb.png)
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/6c0dc62c-b339-4df4-8d31-f8d9cb290ccb.png)
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/6e773d8f-6030-43d7-b226-7f734033ab32.png)
thank you
YANG
Best answer by Yang.Yongtao
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