This article has outlined the procedure for creating a background material other than air for a NSC group.  In a pure NSC system, this is accomplished by enclosing the desired elements in a larger volume of a non-air material.  Considering the nesting rule, the enclosing volume should be listed prior to the elements which will be imbedded in it. 

For mixed mode systems, the background material for an NSC group is defined by the Glass definition in the LDE for the specified Non-Sequential Component Surface.

REFERENCES

ZEMAX Optical Design Program User’s Guide, ZEMAX Development Corporation