The desktop version of OpticStudio is installed locally (on-premise). All prerequisite software and drivers are included with the OpticStudio installer.
Before downloading, please note the following:
This Zemax OpticStudio release only works with licenses issued by Zemax. This means all USB licenses and any license serial number with either a 5 digit number or starting with L such as 22000 or L100000. If you are using an Ansys license, please get a release from the Ansys Zemax OpticStudio download page instead.