Hello!
I recently came across an interesting question regarding optimization in mixed mode which I would like to share here. Feel free to put any potential follow-up questions into the comments.
Let's take a simple mixed mode system with a tilted Standard Lens Object which focus the rays onto an image plane. As you can see on the image below, we have two variable parameters in the whole system:
- Tilt About Y, Non-sequential Parameter
- Thickness Surface 3, Sequential Parameter
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/5fd98f51-66b3-48e9-a248-c8b3908117f4.png)
If we now optimize with the Merit Function default settings (Wizard Default settings) to minimize the Spot Size, we can observe that both the sequential and the non-sequential variables are optimized:
![](https://uploads-us-west-2.insided.com/zemax-en/attachment/6c4c10d7-bbc3-4da2-9097-55568f06c604.png)
Have a good day!