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 # PythonStandalone\_24\_nsc\_detectors

 Last update: 17.07.2025 

 1import clr, os, winreg

 2from itertools import islice

 3 

 4import time, array

 5import matplotlib.pyplot as plt

 6import numpy as np

 7 

 8class PythonStandaloneApplication(object):

 9 class LicenseException(Exception):

 10 pass

 11 class ConnectionException(Exception):

 12 pass

 13 class InitializationException(Exception):

 14 pass

 15 class SystemNotPresentException(Exception):

 16 pass

 17 

 18 def __init__(self, path=None):

 19 \# determine location of ZOSAPI\_NetHelper.dll &amp; add as reference

 20 aKey = winreg.OpenKey(winreg.ConnectRegistry(None, winreg.HKEY_CURRENT_USER), r"Software\\Zemax", 0, winreg.KEY_READ)

 21 zemaxData = winreg.QueryValueEx(aKey, 'ZemaxRoot')

 22 NetHelper = os.path.join(os.sep, zemaxData[0], r'ZOS-API\\Libraries\\ZOSAPI\_NetHelper.dll')

 23 winreg.CloseKey(aKey)

 24 clr.AddReference(NetHelper)

 25 import ZOSAPI_NetHelper

 26 

 27 \# Find the installed version of OpticStudio

 28 if path is None:

 29 isInitialized = ZOSAPI_NetHelper.ZOSAPI_Initializer.Initialize()

 30 else:

 31 \# Note -- uncomment the following line to use a custom initialization path

 32 isInitialized = ZOSAPI_NetHelper.ZOSAPI_Initializer.Initialize(path)

 33 

 34 \# determine the ZOS root directory

 35 if isInitialized:

 36 dir = ZOSAPI_NetHelper.ZOSAPI_Initializer.GetZemaxDirectory()

 37 else:

 38 raise PythonStandaloneApplication.InitializationException("Unable to locate Zemax OpticStudio. Try using a hard-coded path.")

 39 

 40 \# add ZOS-API referencecs

 41 clr.AddReference(os.path.join(os.sep, dir, "ZOSAPI.dll"))

 42 clr.AddReference(os.path.join(os.sep, dir, "ZOSAPI\_Interfaces.dll"))

 43 import ZOSAPI

 44 

 45 \# create a reference to the API namespace

 46 self.ZOSAPI = ZOSAPI

 47 

 48 \# create a reference to the API namespace

 49 self.ZOSAPI = ZOSAPI

 50 

 51 \# Create the initial connection class

 52 self.TheConnection = [ZOSAPI.ZOSAPI\_Connection](class_z_o_s_a_p_i_1_1_z_o_s_a_p_i___connection.xhtml)()

 53 

 54 if self.TheConnection is None:

 55 raise PythonStandaloneApplication.ConnectionException("Unable to initialize .NET connection to ZOSAPI")

 56 

 57 self.TheApplication = self.TheConnection.CreateNewApplication()

 58 if self.TheApplication is None:

 59 raise PythonStandaloneApplication.InitializationException("Unable to acquire ZOSAPI application")

 60 

 61 if self.TheApplication.IsValidLicenseForAPI == False:

 62 raise PythonStandaloneApplication.LicenseException("License is not valid for ZOSAPI use")

 63 

 64 self.TheSystem = self.TheApplication.PrimarySystem

 65 if self.TheSystem is None:

 66 raise PythonStandaloneApplication.SystemNotPresentException("Unable to acquire Primary system")

 67 

 68 def __del__(self):

 69 if self.TheApplication is not None:

 70 self.TheApplication.CloseApplication()

 71 self.TheApplication = None

 72 

 73 self.TheConnection = None

 74 

 75 def OpenFile(self, filepath, saveIfNeeded):

 76 if self.TheSystem is None:

 77 raise PythonStandaloneApplication.SystemNotPresentException("Unable to acquire Primary system")

 78 self.TheSystem.LoadFile(filepath, saveIfNeeded)

 79 

 80 def CloseFile(self, save):

 81 if self.TheSystem is None:

 82 raise PythonStandaloneApplication.SystemNotPresentException("Unable to acquire Primary system")

 83 self.TheSystem.Close(save)

 84 

 85 def SamplesDir(self):

 86 if self.TheApplication is None:

 87 raise PythonStandaloneApplication.InitializationException("Unable to acquire ZOSAPI application")

 88 

 89 return self.TheApplication.SamplesDir

 90 

 91 def ExampleConstants(self):

 92 if self.TheApplication.LicenseStatus == self.ZOSAPI.LicenseStatusType.PremiumEdition:

 93 return "Premium"

 94 elif self.TheApplication.LicenseStatus == self.ZOSAPI.LicenseStatusTypeProfessionalEdition:

 95 return "Professional"

 96 elif self.TheApplication.LicenseStatus == self.ZOSAPI.LicenseStatusTypeStandardEdition:

 97 return "Standard"

 98 else:

 99 return "Invalid"

 100 

 101 def reshape(self, data, x, y, transpose = False):

 102 """Converts a System.Double\[,\] to a 2D list for plotting or post processing

 103 

 104 Parameters

 105 ----------

 106 data : System.Double\[,\] data directly from ZOS-API 

 107 x : x width of new 2D list [use var.GetLength(0) for dimension]

 108 y : y width of new 2D list [use var.GetLength(1) for dimension]

 109 transpose : transposes data; needed for some multi-dimensional line series data

 110 

 111 Returns

 112 -------

 113 res : 2D list; can be directly used with Matplotlib or converted to

 114 a numpy array using numpy.asarray(res)

 115 """

 116 if type(data) is not list:

 117 data = list(data)

 118 var_lst = [y] * x;

 119 it = iter(data)

 120 res = [list(islice(it, i)) for i in var_lst]

 121 if transpose:

 122 return self.transpose(res);

 123 return res

 124 

 125 def transpose(self, data):

 126 """Transposes a 2D list (Python3.x or greater). 

 127 

 128 Useful for converting mutli-dimensional line series (i.e. FFT PSF)

 129 

 130 Parameters

 131 ----------

 132 data : Python native list (if using System.Data[,] object reshape first) 

 133 

 134 Returns

 135 -------

 136 res : transposed 2D list

 137 """

 138 if type(data) is not list:

 139 data = list(data)

 140 return list(map(list, zip(*data)))

 141 

 142if __name__ == '\_\_main\_\_':

 143 zos = PythonStandaloneApplication()

 144 

 145 \# load local variables

 146 ZOSAPI = zos.ZOSAPI

 147 TheApplication = zos.TheApplication

 148 TheSystem = zos.TheSystem

 149 if not os.path.exists(TheApplication.SamplesDir + "\\\\API\\\\Python"):

 150 os.makedirs(TheApplication.SamplesDir + "\\\\API\\\\Python")

 151 

 152 \# makes system non-seqnuential and adds 2 objects (3 in total)

 153 TheSystem = TheApplication.CreateNewSystem(ZOSAPI.SystemType.NonSequential)

 154 

 155 \#! \[e24s01\_py\]

 156 \# Initializes NCE and loads surfaces

 157 \# Inserts objects

 158 TheNCE = TheSystem.NCE

 159 for a in range(1,5):

 160 TheNCE.InsertNewObjectAt(1)

 161 \#! \[e24s01\_py\]

 162 

 163 TheSystem.SystemData.MaterialCatalogs.AddCatalog("SCHOTT")

 164 

 165 \#! \[e24s02\_py\]

 166 \# Gets reference to specific object

 167 o1 = TheNCE.GetObjectAt(1)

 168 o2 = TheNCE.GetObjectAt(2)

 169 o3 = TheNCE.GetObjectAt(3)

 170 o4 = TheNCE.GetObjectAt(4)

 171 o5 = TheNCE.GetObjectAt(5)

 172 \#! \[e24s02\_py\]

 173 

 174 \#! \[e24s03\_py\]

 175 \# Changes Object Type

 176 TheNCE.GetObjectAt(1).ChangeType(o1.GetObjectTypeSettings(ZOSAPI.Editors.NCE.ObjectType.SourceEllipse))

 177 o2.ChangeType(o2.GetObjectTypeSettings(ZOSAPI.Editors.NCE.ObjectType.AsphericSurface2))

 178 o3.ChangeType(o3.GetObjectTypeSettings(ZOSAPI.Editors.NCE.ObjectType.StandardLens))

 179 o4.ChangeType(o4.GetObjectTypeSettings(ZOSAPI.Editors.NCE.ObjectType.DetectorColor))

 180 o5.ChangeType(o5.GetObjectTypeSettings(ZOSAPI.Editors.NCE.ObjectType.DetectorRectangle))

 181 \#! \[e24s03\_py\]

 182 

 183 \#! \[e24s04\_py\]

 184 \# Sets positions &amp; materials

 185 TheNCE.GetObjectAt(2).XPosition = 1.5

 186 TheNCE.GetObjectAt(2).ZPosition = 9.99

 187 TheNCE.GetObjectAt(2).Material = 'ABSORB'

 188 \#! \[e24s04\_py\]

 189 o3.YPosition = 1.5

 190 o3.ZPosition = 8.99

 191 o3.Material = 'N-BK7'

 192 o4.ZPosition = 10

 193 o5.RefObject = 4

 194 o5.ZPosition = 1e-3

 195 

 196 \#! \[e24s05\_py\]

 197 \# Sets layout rays based on parameter number

 198 TheNCE.GetObjectAt(1).GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par1).IntegerValue = 100

 199 \# Sets analysis rays based on object data column

 200 o1.ObjectData.NumberOfAnalysisRays = 1E6

 201 \#! \[e24s05\_py\]

 202 

 203 o1.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par10).DoubleValue = 50

 204 o1.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par11).DoubleValue = 50

 205 

 206 o2.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par3).DoubleValue = 0.5

 207 o2.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par4).DoubleValue = 1

 208 o2.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par9).IntegerValue = 1

 209 

 210 o4.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par1).DoubleValue = 8.223

 211 o4.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par2).DoubleValue = 2.565

 212 o4.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par3).IntegerValue = 200

 213 o4.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par4).IntegerValue = 150

 214 

 215 o5_x = 10

 216 o5_y = 12.23

 217 o5.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par1).DoubleValue = o5_x

 218 o5.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par2).DoubleValue = o5_y

 219 o5.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par3).IntegerValue = 100

 220 o5.GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par4).IntegerValue = 100

 221 

 222 \#! \[e24s06\_py\]

 223 \# changes face type and coating properties

 224 TheNCE.GetObjectAt(3).CoatScatterData.GetFaceData(0).FaceIs = ZOSAPI.Editors.NCE.FaceIsType.Absorbing

 225 TheNCE.GetObjectAt(3).CoatScatterData.GetFaceData(1).FaceIs = ZOSAPI.Editors.NCE.FaceIsType.ObjectDefault

 226 TheNCE.GetObjectAt(3).CoatScatterData.GetFaceData(1).Coating = 'I.50'

 227 \#! \[e24s06\_py\]

 228 

 229 \#! \[e24s07\_py\]

 230 \# changes scatter profile on face

 231 o3_Scatter = TheNCE.GetObjectAt(3).CoatScatterData.GetFaceData(2).CreateScatterModelSettings(ZOSAPI.Editors.NCE.ObjectScatteringTypes.Lambertian)

 232 o3_Scatter._S_Lambertian.ScatterFraction = 0.5

 233 TheNCE.GetObjectAt(3).CoatScatterData.GetFaceData(2).ChangeScatterModelSettings(o3_Scatter)

 234 TheNCE.GetObjectAt(3).CoatScatterData.GetFaceData(2).NumberOfRays = 2

 235 \#! \[e24s07\_py\]

 236 

 237 \#! \[e24s08\_py\]

 238 \# removes pixel interpolation for the detector

 239 o4.TypeData.UsePixelInterpolation = False

 240 \#! \[e24s08\_py\]

 241 

 242 \#! \[e24s09\_py\]

 243 \# Setup and run the ray trace

 244 NSCRayTrace = TheSystem.Tools.OpenNSCRayTrace()

 245 NSCRayTrace.SplitNSCRays = False

 246 NSCRayTrace.ScatterNSCRays = True

 247 NSCRayTrace.UsePolarization = False

 248 NSCRayTrace.IgnoreErrors = True

 249 NSCRayTrace.SaveRays = False

 250 NSCRayTrace.ClearDetectors(0)

 251 NSCRayTrace.RunAndWaitForCompletion()

 252 NSCRayTrace.Close()

 253 \#! \[e24s09\_py\]

 254 

 255 \# saves file to disk to expose all objects

 256 TheSystem.SaveAs(TheApplication.SamplesDir + '\\\\API\\\\Python\\\\e24\_nsc\_detectors.zos')

 257 

 258 tic = time.time()

 259 \#! \[e24s10\_py\]

 260 \# Creates a new detector viewer analysis reference, changes to TrueColor for RGB extraction

 261 d4 = TheSystem.Analyses.New_Analysis(ZOSAPI.Analysis.AnalysisIDM.DetectorViewer)

 262 det_settings = d4.GetSettings()

 263 det_settings.ShowAs = ZOSAPI.Analysis.DetectorViewerShowAsTypes.TrueColor

 264 det_settings.Detector.SetDetectorNumber(4);

 265 d4.ApplyAndWaitForCompletion()

 266 d4_Results = d4.GetResults()

 267 d4_raw = d4_Results.GetDataGridRgb(0)

 268 \#! \[e24s10\_py\]

 269 

 270 \# Reads in values from NCE for detector settings

 271 obj = 4

 272 x_half = TheSystem.NCE.GetObjectAt(obj).GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par1).DoubleValue

 273 y_half = TheSystem.NCE.GetObjectAt(obj).GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par2).DoubleValue

 274 x_pixels = TheSystem.NCE.GetObjectAt(obj).GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par3).IntegerValue

 275 y_pixels = TheSystem.NCE.GetObjectAt(obj).GetObjectCell(ZOSAPI.Editors.NCE.ObjectColumn.Par4).IntegerValue

 276 

 277 \#! \[e24s11\_py\]

 278 \# FillValues() method still in development for Python; need to use GetValue()

 279 \#! \[e24s11\_py\]

 280 

 281 \#! \[e24s12\_py\]

 282 \# FillValues() method still in development for Python

 283 \# creates 3D array to store normalized RGB data

 284 data = np.zeros([y_pixels, x_pixels, 3])

 285 

 286 for y in range(0, y_pixels):

 287 for x in range(0, x_pixels):

 288 rgb = d4_raw.GetValue(x, y)

 289 data[y, x, 0] = rgb.R / 255

 290 data[y, x, 1] = rgb.G / 255

 291 data[y, x, 2] = rgb.B / 255

 292 \#! \[e24s12\_py\]

 293 

 294 plt.figure()

 295 plt.imshow(np.flipud(data), extent=[-x_half, x_half, -y_half, y_half])

 296 

 297 \#! \[e24s13\_py\]

 298 \# changes default values for Detector Viewer

 299 \# pltos the Incoherent Irradiance in False Color

 300 d5 = TheSystem.Analyses.New_Analysis(ZOSAPI.Analysis.AnalysisIDM.DetectorViewer)

 301 d5_set = d5.GetSettings()

 302 

 303 d5_set.Detector.SetDetectorNumber(5)

 304 d5_set.ShowAs = ZOSAPI.Analysis.DetectorViewerShowAsTypes.FalseColor

 305 d5.ApplyAndWaitForCompletion()

 306 d5_results = d5.GetResults()

 307 d5_values = d5_results.GetDataGrid(0).Values

 308 \#! \[e24s13\_py\]

 309 

 310 npData = zos.reshape(d5_values, d5_values.GetLength(0), d5_values.GetLength(1))

 311 \#npData = (np.asarray(tuple(d5\_values))).reshape(d5\_values.GetLength(0), d5\_values.GetLength(1));

 312 plt.figure()

 313 plt.imshow(np.flipud(npData), cmap='jet', extent=[-o5_x, o5_x, -o5_y, o5_y])

 314 plt.colorbar()

 315 

 316 toc = round(time.time() - tic, 3)

 317 print('Elapsed time is ' + str(toc) + ' seconds.')

 318 

 319 \#! \[e24s14\_py\]

 320 \# saves current system in memory

 321 TheSystem.Save()

 322 \#! \[e24s14\_py\]

 323 

 324 

 325 \# This will clean up the connection to OpticStudio.

 326 \# Note that it closes down the server instance of OpticStudio, so you for maximum performance do not do

 327 \# this until you need to.

 328 del zos

 329 zos = None

 330 

 331 \# place plt.show() after clean up to release OpticStudio from memory

 332 plt.show()

[ZOSAPI.ZOSAPI\_Connection](class_z_o_s_a_p_i_1_1_z_o_s_a_p_i___connection.xhtml)

**Definition:** ZemaxService.cs:198