There are many other types of analysis windows that ZEMAX can generate.

If the "Use Session Files" option is checked, a Matrix Spot Diagram will also be opened when the Double Gauss lens file is opened. This type of analysis window shows the spots formed by each field and wavelength combination individually.

Several other types of spot diagrams are available. To open a Standard Spot Diagram, select the menu option, "Analysis > Spot Diagrams > Standard" from the main menu bar. The spot diagram for the loaded lens will then appear.

 
Now select "Settings" from the Spot Diagram window menu bar. Note that there is an option in this settings dialog box labeled "Pattern" which is set to Hexapolar. This setting denotes the distribution of rays used to launch rays to the entrance pupil from the object surface. Hexapolar is the default pattern for rays in the pupil. Click on the drop-down box and select "Dithered" instead. Now click on "OK". The spot diagram will be redrawn, now with a pseudo-random set of rays instead of a hexapolar pattern.

       

TIP:  Clicking on a window with the "right" mouse button will also invoke the Settings dialog box for that window.