
Using the glasses window
The glasses window displays the glasses that are included in the lens design file. This may include glasses not currently in use by the lens. You can think of this as a mini glass catalog that is saved in the lens file. You can tell from the name and version of the glasses which of the vendor catalogs the glasses originally came from.
To summon the glasses window:
- Select from the menu System > Glasses
- or, use the Glasses toolbar item, e.g., on the surface data editor toolbar.

The window displays a table of glasses. The first column is a checkbox that is ticked if the glass is used by the lens. The second column is a number that relates the glass to the key path displayed in the slider or optimization window. The third column is a description of the glass (name and version, typically). The fourth column is the color of the glass, used on layout views of the lens.
Double click a row in the table to see (and in the case of model glasses, edit) some parameters of the glass.
The Open library button opens a new window showing the glass library. New glasses may be dragged from the glass library and dropped onto the glasses table. If you drop a glass on top of a glass, the dropped glass will replace the glass everywhere the glass is used in the lens design.
You can also drag a glass from the glasses table itself and drop it on another existing glass to change the glass everywhere it is used in the lens design.
To make a new model glass based on a glass in the table, select the glass and press Clone as model glass. To replace the original glass with the model glass everywhere the original glass is used in the lens, simply drag the model glass and drop it on the glass in the glasses table.
To to make a new model glass, press New model glass.
To make a new mutable glass based on a glass in the table, select the glass and press Clone as mutable glass. To replace the original glass with the mutable glass everywhere the original glass is used in the lens, simply drag the mutable glass and drop it on the glass in the glasses table.
To eliminate unused glasses from the lens design, press the Delete unused glasses button. This can not be undone.