## On this page # Example 14 - Python Last update: 16.07.2025 # Python import clr, os, winreg from itertools import islice class PythonStandaloneApplication(object): class LicenseException(Exception): pass class ConnectionException(Exception): pass class InitializationException(Exception): pass class SystemNotPresentException(Exception): pass def __init__(self, path=None): \# determine location of ZOSAPI\_NetHelper.dll & add as reference aKey = winreg.OpenKey(winreg.ConnectRegistry(None, winreg.HKEY_CURRENT_USER), r"Software\\Zemax", 0, winreg.KEY_READ) zemaxData = winreg.QueryValueEx(aKey, 'ZemaxRoot') NetHelper = os.path.join(os.sep, zemaxData[0], r'ZOS-API\\Libraries\\ZOSAPI\_NetHelper.dll') winreg.CloseKey(aKey) clr.AddReference(NetHelper) import ZOSAPI_NetHelper \# Find the installed version of OpticStudio if path is None: isInitialized = ZOSAPI_NetHelper.ZOSAPI_Initializer.Initialize() else: \# Note -- uncomment the following line to use a custom initialization path isInitialized = ZOSAPI_NetHelper.ZOSAPI_Initializer.Initialize(path) \# determine the ZOS root directory if isInitialized: dir = ZOSAPI_NetHelper.ZOSAPI_Initializer.GetZemaxDirectory() else: raise PythonStandaloneApplication.InitializationException("Unable to locate Zemax OpticStudio. Try using a hard-coded path.") \# add ZOS-API referencecs clr.AddReference(os.path.join(os.sep, dir, "ZOSAPI.dll")) clr.AddReference(os.path.join(os.sep, dir, "ZOSAPI\_Interfaces.dll")) import ZOSAPI \# create a reference to the API namespace self.ZOSAPI = ZOSAPI \# create a reference to the API namespace self.ZOSAPI = ZOSAPI \# Create the initial connection class self.TheConnection = [ZOSAPI.ZOSAPI\_Connection](class_z_o_s_a_p_i_1_1_z_o_s_a_p_i___connection.xhtml)() if self.TheConnection is None: raise PythonStandaloneApplication.ConnectionException("Unable to initialize .NET connection to ZOSAPI") self.TheApplication = self.TheConnection.CreateNewApplication() if self.TheApplication is None: raise PythonStandaloneApplication.InitializationException("Unable to acquire ZOSAPI application") if self.TheApplication.IsValidLicenseForAPI == False: raise PythonStandaloneApplication.LicenseException("License is not valid for ZOSAPI use") self.TheSystem = self.TheApplication.PrimarySystem if self.TheSystem is None: raise PythonStandaloneApplication.SystemNotPresentException("Unable to acquire Primary system") def __del__(self): if self.TheApplication is not None: self.TheApplication.CloseApplication() self.TheApplication = None self.TheConnection = None def OpenFile(self, filepath, saveIfNeeded): if self.TheSystem is None: raise PythonStandaloneApplication.SystemNotPresentException("Unable to acquire Primary system") self.TheSystem.LoadFile(filepath, saveIfNeeded) def CloseFile(self, save): if self.TheSystem is None: raise PythonStandaloneApplication.SystemNotPresentException("Unable to acquire Primary system") self.TheSystem.Close(save) def SamplesDir(self): if self.TheApplication is None: raise PythonStandaloneApplication.InitializationException("Unable to acquire ZOSAPI application") return self.TheApplication.SamplesDir def ExampleConstants(self): if self.TheApplication.LicenseStatus == self.ZOSAPI.LicenseStatusType.PremiumEdition: return "Premium" elif self.TheApplication.LicenseStatus == self.ZOSAPI.LicenseStatusTypeProfessionalEdition: return "Professional" elif self.TheApplication.LicenseStatus == self.ZOSAPI.LicenseStatusTypeStandardEdition: return "Standard" else: return "Invalid" def reshape(self, data, x, y, transpose = False): """Converts a System.Double\[,\] to a 2D list for plotting or post processing Parameters ---------- data : System.Double\[,\] data directly from ZOS-API x : x width of new 2D list [use var.GetLength(0) for dimension] y : y width of new 2D list [use var.GetLength(1) for dimension] transpose : transposes data; needed for some multi-dimensional line series data Returns ------- res : 2D list; can be directly used with Matplotlib or converted to a numpy array using numpy.asarray(res) """ if type(data) is not list: data = list(data) var_lst = [y] * x; it = iter(data) res = [list(islice(it, i)) for i in var_lst] if transpose: return self.transpose(res); return res def transpose(self, data): """Transposes a 2D list (Python3.x or greater). Useful for converting mutli-dimensional line series (i.e. FFT PSF) Parameters ---------- data : Python native list (if using System.Data[,] object reshape first) Returns ------- res : transposed 2D list """ if type(data) is not list: data = list(data) return list(map(list, zip(*data))) if __name__ == '\_\_main\_\_': zos = PythonStandaloneApplication() \# load local variables ZOSAPI = zos.ZOSAPI TheApplication = zos.TheApplication TheSystem = zos.TheSystem if not os.path.exists(TheApplication.SamplesDir + "\\\\API\\\\Python"): os.makedirs(TheApplication.SamplesDir + "\\\\API\\\\Python") \#! \[e14s01\_py\] \# Open Double Gauss sample file samplesFolder = TheApplication.SamplesDir DGfile = samplesFolder + r"\\Sequential\\Objectives\\Double Gauss 28 degree field.zos" TheSystem.LoadFile(DGfile, False) \#! \[e14s01\_py\] \#! \[e14s02\_py\] \# Set up Tolerance Wizard and run it tWiz = TheSystem.TDE.SEQToleranceWizard \# Specify surface tolerances tWiz.SurfaceRadius = 0.1 tWiz.SurfaceThickness = 0.1 tWiz.SurfaceDecenterX = 0.1 tWiz.SurfaceDecenterY = 0.1 tWiz.SurfaceTiltX = 0.2 tWiz.SurfaceTiltY = 0.2 \# Specify element tolerances tWiz.ElementDecenterX = 0.1 tWiz.ElementDecenterY = 0.1 tWiz.ElementTiltXDegrees = 0.2 tWiz.ElementTiltYDegrees = 0.2 \# Specify tolerances not to be used tWiz.IsSurfaceSandAIrregularityUsed = False tWiz.IsIndexUsed = False tWiz.IsIndexAbbePercentageUsed = False tWiz.OK() \#! \[e14s02\_py\] \#! \[e14s03\_py\] \# Create a "Double Gauss" folder in the Samples folder import os dirLoc = samplesFolder + "\\\\API\\\\Python\\\\e14\_seq\_tolerance" if not os.path.exists(dirLoc): os.makedirs(dirLoc) \# Save new file to Double Gauss folder fileNameSeq = dirLoc + "\\\\Double Gauss (seq).zos" TheSystem.SaveAs(fileNameSeq) \#! \[e14s03\_py\] print('File saved: %s' % fileNameSeq) \#! \[e14s04\_py\] \# Set up Tolerancing analysis and run it tol = TheSystem.Tools.OpenTolerancing() \# Select Sensitivity mode tol.SetupMode = ZOSAPI.Tools.Tolerancing.SetupModes.Sensitivity \# Select Criterion and related settings tol.Criterion = ZOSAPI.Tools.Tolerancing.Criterions.RMSSpotRadius tol.CriterionSampling = 3 tol.CriterionComp = ZOSAPI.Tools.Tolerancing.CriterionComps.OptimizeAll_DLS tol.CriterionCycle = 2 tol.CriterionField = ZOSAPI.Tools.Tolerancing.CriterionFields.UserDefined \# Select number of MC runs and files to save tol.NumberOfRuns = 20 tol.NumberToSave = 20 \# Run the Tolerancing analysis tol.RunAndWaitForCompletion() tol.Close() \#! \[e14s04\_py\] \#! \[e14s05\_py\] \# Convert file to Non-sequential mode convertNSmode = TheSystem.Tools.OpenConvertToNSCGroup() convertNSmode.ConvertFileToNSC = True convertNSmode.RunAndWaitForCompletion() convertNSmode.Close(); \# Save the Non-sequential file to the Double Gauss folder fileNameNS = dirLoc + "\\\\Double Gauss (NS).zos" TheSystem.SaveAs(fileNameNS) \#! \[e14s05\_py\] print('File saved: %s' % fileNameNS) \# This will clean up the connection to OpticStudio. \# Note that it closes down the server instance of OpticStudio, so you for maximum performance do not do \# this until you need to. del zos zos = None [ZOSAPI.ZOSAPI\_Connection](class_z_o_s_a_p_i_1_1_z_o_s_a_p_i___connection.xhtml) **Definition:** ZemaxService.cs:198