Get theoretical focal lengths for new wave regions

[mgalloy]

We don't have focal_length values for the new wave regions (we are just using the nearby wave regions's focal length). These values should be able to be computed from Zemax, which is where I got the focal length values for the old wave regions.

[detoma]

In the code (which comes from Steve) we use the theoretical O1 focus from Pat (blue line). We need to open a JIRA ticket and ask Pat to give us the accurate values at the new wavelengths.