Scale Lens
The Scale Lens tool is available in the System section of the Setup tab.
This feature will scale the entire lens by the specified factor. This is useful for scaling an existing design to a new focal length, for example. Wavelengths are not scaled. The scale lens feature may also be used to change the units from mm to inches, or other combinations of unit types.
Settings:
Scale by factor If selected, then a scale factor may be entered directly.
First Surface The first surface of the range when scale by factor is selected.
Last Surface The last surface of the range when scale by factor is selected.
Scale by units If selected, then the lens will be converted by the selected units.
Scaling of data is performed based upon the units of measure for the data. If the scale factor is X, then data measured in lens units of length will be scaled by the factor X. Data measured in units of lens units squared (such as millimeters squared) will be scaled by X squared. Some polynomial coefficients, such as those on the Even Aspheric surface, have units that change from term to term, and OpticStudio accounts for this when scaling the data. Other parameters, such as the conic constant, are dimensionless, and are therefore not scaled.
OpticStudio will generally scale all lens data in the Lens Data Editor and the Non-sequential Component Editor correctly. OpticStudio also will scale almost all of the data in the Merit Function Editor, the Multi- Configuration Editor, and the Tolerance Data Editor correctly as well.
OpticStudio will not attempt to scale some types of data, even though scaling would be appropriate for those types of data. These exceptions are for data items such as the multi-configuration operands PRAM and NPAR, that modify general parameter data of surfaces or objects, or the parameter data of user-defined DLL surfaces or objects. These data items should be scaled manually, if required. In addition, OpticStudio will not attempt to scale the size of a CAD Part or CAD Assembly object. These objects should be scaled in the original creating program, if required.
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