diff --git a/ansys_optical_automation/application/Source_to_Lightfield.py b/ansys_optical_automation/application/Source_to_Lightfield.py
new file mode 100644
index 00000000..60befa8a
--- /dev/null
+++ b/ansys_optical_automation/application/Source_to_Lightfield.py
@@ -0,0 +1,49 @@
+# Python Script, API Version = V23
+"""
+The aim of this script is to convert any type of lightsource (surface and rayfile source currently) into Lightfield one.
+12/2022 V1.0 capabilities :
+ -
+"""
+from ansys_optical_automation.speos_process.speos_sensors import LightFieldSensor
+from ansys_optical_automation.speos_process.speos_sensors import LocalMeshing
+
+# import sys
+# repo_path = r"your_repo_path"
+# sys.path.append(repo_path)
+
+
+def import_Dome(path):
+    world_origin = GetRootPart().CoordinateSystems[-1]
+    Selection.Create(world_origin).SetActive()
+    DocumentInsert.Execute(path)
+
+
+def set_dome(surface_name, size):
+    dome_surface = Selection.CreateByNames(surface_name)
+    InputHelper.PauseAndGetInput("Please enter a scale value", size)
+    world_origin_point = GetRootPart().CoordinateSystems[-1].Frame.Origin
+    Scale.Execute(dome_surface, world_origin_point, size)
+
+
+def set_LocalMeshing(geometries, name, sag_mode, sag_value):
+    localMeshing = LocalMeshing(name, SpeosSim, SpaceClaim)
+    localMeshing.set_geometries(geometries)
+    localMeshing.set_sag(sag_mode, sag_value)
+
+
+def define_LightfieldSensor(sensor_name, sensor_type, incident_sampling, azimuth_sampling, geometries):
+    lightField = LightFieldSensor(sensor_name, SpeosSim, SpaceClaim)
+    lightField.set_faces(geometries)
+    lightField.set_type(sensor_type)
+    lightField.set_sampling(incident_sampling, azimuth_sampling)
+
+
+def define_DirectSim(sim_name, sensor_name):
+    pass
+
+
+def main():
+    pass
+
+
+main()
diff --git a/ansys_optical_automation/application/camera_nhtsa_test.py b/ansys_optical_automation/application/camera_nhtsa_test.py
index 724918ac..2635666a 100644
--- a/ansys_optical_automation/application/camera_nhtsa_test.py
+++ b/ansys_optical_automation/application/camera_nhtsa_test.py
@@ -117,7 +117,7 @@ def prepare_sim_setup(cam_name, sim_name, part_names, cam_model):
     """
     Prepares a simulation model based on the given input:
     creates/edits the Camera with name cam_name based on the predefined Ccam_model,
-        positions it at axissystem "Cam_pos_1"
+        positions it at axis system "Cam_pos_1"
     creates/edits the Simulation with name sim_name
     adds all geometries of the parts given in part_names
     Parameters
diff --git a/ansys_optical_automation/speos_process/speos_geometry_properties.py b/ansys_optical_automation/speos_process/speos_geometry_properties.py
new file mode 100644
index 00000000..9d5db2d3
--- /dev/null
+++ b/ansys_optical_automation/speos_process/speos_geometry_properties.py
@@ -0,0 +1,138 @@
+from ansys_optical_automation.scdm_core.base import BaseSCDM
+
+
+class GeometryProperties(BaseSCDM):
+    """
+    Provides the parent class for all Speos Geometry properties types.
+
+    This class contains methods and properties that are common to all geometry properties elements.
+    It shouldn't be used by itself. Subclasses should be used instead.
+    """
+
+    def __init__(self, name, SpeosSim, SpaceClaim):
+        super(GeometryProperties, self).__init__(SpaceClaim, ["V19", "V20", "V21", "V22", "V23"])
+        self.speos_sim = SpeosSim
+        self.name = name
+        self.speos_object = None
+        self.geometries_list = []
+
+    def set_geometries(self, geometries):
+        """
+        set geometries, e.g. bodies and faces, to Speos geometry properties.
+
+        Parameters
+        ----------
+        geometries : list
+            a list of SCDM bodies and faces
+
+        Returns
+        -------
+
+
+        """
+        if len(self.geometries_list) == 0:
+            selection = self.Selection.Create(geometries)
+            self.speos_object.Geometries.Set(selection.Items)
+        else:
+            self.geometries_list.extend(geometries)
+            selection = self.Selection.Create(self.geometries_list)
+            self.speos_object.Geometries.Set(selection.Items)
+
+
+# TODO add unittest
+class LocalMeshing(GeometryProperties):
+    """
+    Provides methods for defining the Speos LocalMeshing.
+    """
+
+    def __init__(self, name, SpeosSim, SpaceClaim):
+        super(LocalMeshing, self).__init__(name, SpeosSim, SpaceClaim)
+        if self.speos_sim.LocalMeshing.Find(name):
+            self.speos_object = self.speos_sim.LocalMeshing.Find(name)
+            for item in self.speos_object.Geometries.LinkedObjects:
+                self.geometries_list.append(item)
+        else:
+            self.speos_object = self.speos_sim.LocalMeshing.Create()
+            self.speos_object.Name = name
+
+    def set_sag(self, sag_mode, sag_value):
+        """
+        Define Sag Mode and apply a value on it.
+        Parameters
+        ----------
+        sag_mode : str
+        In Sag Meshing, 3 kind of modes are available.
+
+        sag_value : float
+        Meshing value. Depending of sag_mode value, sag_value might be an int or a float.
+
+        Returns
+        -------
+
+
+        """
+        sag_mode = sag_mode.lower()
+        if sag_mode == "proportional to face size":
+            self.speos_object.MeshingSagMode = self.speos_sim.LocalMeshing.EnumMeshingSagMode.ProportionalFace
+            float(sag_value)
+            self.speos_object.MeshingSagValue = sag_value
+        elif sag_mode == "proportional to body size":
+            self.speos_object.MeshingSagMode = self.speos_sim.LocalMeshing.EnumMeshingSagMode.ProportionalBody
+            float(sag_value)
+            self.speos_object.MeshingSagValue = sag_value
+        elif sag_mode == "fixed":
+            self.speos_object.MeshingSagMode = self.speos_sim.LocalMeshing.EnumMeshingSagMode.Fixed
+            float(sag_value)
+            self.speos_object.MeshingSagValue = sag_value
+        else:
+            error_message = "please provide a valid Sag Mode"
+            raise ValueError(error_message)
+
+    def set_step(self, step_mode, step_value):
+        """
+        Define step values for local meshing.
+
+        Parameters
+        ----------
+        step_mode : str
+            step mode
+        step_value : float
+            step value
+
+        Returns
+        -------
+
+
+        """
+        step_mode = step_mode.lower()
+        if step_mode == "proportional to face size":
+            self.speos_object.MeshingStepMode = self.speos_sim.LocalMeshing.EnumMeshingStepMode.ProportionalFace
+            float(step_value)
+            self.speos_object.MeshingStepValue = step_value
+        elif step_mode == "proportional to body size":
+            self.speos_object.MeshingStepMode = self.speos_sim.LocalMeshing.EnumMeshingStepMode.ProportionalBody
+            float(step_value)
+            self.speos_object.MeshingStepValue = step_value
+        elif step_mode == "fixed":
+            self.speos_object.MeshingStepMode = self.speos_sim.LocalMeshing.EnumMeshingStepMode.Fixed
+            float(step_value)
+            self.speos_object.MeshingStepValue = step_value
+        else:
+            error_message = "please provide a valid Sag Mode"
+            raise ValueError(error_message)
+
+
+class UVMapping(GeometryProperties):
+    """
+    Provides methods for defining the Speos UVMapping.
+    """
+
+    def __init__(self, name, SpeosSim, SpaceClaim):
+        super(UVMapping, self).__init__(name, SpeosSim, SpaceClaim)
+        if self.speos_sim.LocalMeshing.Find(name):
+            self.speos_object = self.speos_sim.UVMapping.Find(name)
+            for item in self.speos_object.Geometries.LinkedObjects:
+                self.geometries_list.append(item)
+        else:
+            self.speos_object = self.speos_sim.UVMapping.Create()
+            self.speos_object.Name = name
diff --git a/ansys_optical_automation/speos_process/speos_sensors.py b/ansys_optical_automation/speos_process/speos_sensors.py
index f3b371d1..070263d6 100644
--- a/ansys_optical_automation/speos_process/speos_sensors.py
+++ b/ansys_optical_automation/speos_process/speos_sensors.py
@@ -679,3 +679,94 @@ def set_fov(self, horizontal_fov, vertical_fov, horizontal_sampling, vertical_sa
         self.speos_object.VPlane = vertical_fov
         self.speos_object.HNbSamples = horizontal_sampling
         self.speos_object.VNbSamples = vertical_sampling
+
+
+class SensorLightField(Sensor):
+    """
+    LightFieldSensor has to be computed after its definition by using command like this: object.Compute()
+    """
+
+    def __init__(self, name, SpeosSim, SpaceClaim):
+        super(SensorLightField, self).__init__(name, SpeosSim, SpaceClaim)
+        speos_object = self.speos_sim.SensorLightField.Find(self.name)
+        if not speos_object:
+            speos_object = self.speos_sim.SensorLightField.Create()
+            speos_object.Name = name
+        self.speos_object = speos_object
+
+    def set_faces(self, selection):
+        # TODO please correct this method and comment section
+        """
+        Make the faces selection and apply them in Lightfield Sensor
+        Parameters
+        ----------
+        selection : active selection
+            return a list?
+
+        Returns
+        -------
+
+
+        """
+        face_selection = self.Selection.Create(selection)
+        self.speos_sim.SensorLightField.OrientedFaces.Set(face_selection.Items)
+
+    def set_type(self, sensor_type):
+        # TODO double check if everything is fine: Just a copy/past from Radiance sensor set_type function with small
+        #  adaptations
+        """
+        Set Sensor Type for Lightfield sensor. Only Radiometric, Photometric and Spectral are available for it.
+        Parameters
+        ----------
+        sensor_type : str
+            return the stype of sensor
+
+        Returns
+        -------
+
+
+        """
+        sensor_type = sensor_type.lower()
+        if sensor_type == "photometric":
+            self.speos_object.SensorType = self.speos_sim.SensorLightfield.EnumSensorType.Photometric
+        elif sensor_type == "radiometric":
+            self.speos_object.SensorType = self.speos_sim.SensorLightfield.EnumSensorType.Radiometric
+        elif sensor_type == "spectral":
+            self.speos_object.SensorType = self.speos_sim.SensorLightfield.EnumSensorType.Spectral
+        else:
+            error_message = "please provide a valid Lightfield sensor type"
+            raise ValueError(error_message)
+
+    def set_sampling(self, incident_sampling=None, azimuth_sampling=None):
+        """Set the number of samples on the axes.
+
+        Parameters
+        ----------
+        incident_sampling : int, optionl
+            Number of samples on the incident angle. The default is ``None``.
+        azimuth_sampling : int
+            Number of samples on the azimuth_sampling. The default is ``None``.
+        """
+        if not incident_sampling and not azimuth_sampling:
+            raise NameError("No inputs provided.")
+        if incident_sampling:
+            self.speos_object.IncidentAngleSamples = incident_sampling
+        if azimuth_sampling:
+            self.speos_object.AzimuthAngleNbSamples = azimuth_sampling
+
+    def set_resolution(self, incident_resolution=None, azimuth_resolution=None):
+        """Set the number of samples on the axes.
+
+        Parameters
+        ----------
+        incident_resolution : int, optionl
+            Number of resolution on the incident angle. The default is ``None``.
+        azimuth_resolution : int
+            Number of resolution on the azimuth_sampling. The default is ``None``.
+        """
+        if not incident_resolution and not azimuth_resolution:
+            raise NameError("No inputs provided.")
+        if incident_resolution:
+            self.speos_object.IncidentAngleResolution = incident_resolution
+        if azimuth_resolution:
+            self.speos_object.AzimuthAngleResolution = azimuth_resolution
diff --git a/ansys_optical_automation/speos_process/speos_simulations.py b/ansys_optical_automation/speos_process/speos_simulations.py
index f7af4301..026df081 100644
--- a/ansys_optical_automation/speos_process/speos_simulations.py
+++ b/ansys_optical_automation/speos_process/speos_simulations.py
@@ -268,3 +268,26 @@ def linked_export_simulation(self):
             save_path, r"SPEOS isolated files", os.path.basename(doc_path).split(".")[0], export_name, export_name
         )
         return sim_path
+
+    def append_source(simulation_name):
+        """
+        Append a list of source in a simulation.
+        Returns
+        -------
+
+        """
+        speos_source_list = []
+        for items in GetRootPart().CustomObjects:
+            if items.Type == "SPEOS_SC.SIM.SpeosWrapperSourceSurface":
+                speos_source_list.append(items)
+            if items.Type == "SPEOS_SC.SIM.SpeosWrapperSourceRayFile":
+                speos_source_list.append(items)
+            else:
+                print("No Light source found")
+
+        Direct_Sim = SpeosSim.SimulationDirect.Find(simulation_name)
+        for source_index in range(Direct_Sim.Sources.Count):
+            source_sim = Direct_Sim.Sources.Item[source_index]
+            speos_source_list.append(source_sim)
+        Direct_Sim.Sources.Set(speos_source_list)
+        return speos_source_list
diff --git a/ansys_optical_automation/speos_process/speos_sources.py b/ansys_optical_automation/speos_process/speos_sources.py
new file mode 100644
index 00000000..ae3630dc
--- /dev/null
+++ b/ansys_optical_automation/speos_process/speos_sources.py
@@ -0,0 +1,30 @@
+from ansys_optical_automation.scdm_core.base import BaseSCDM
+
+
+class Source(BaseSCDM):
+    """
+    Provides the parent class for all Speos Source types.
+
+    This class contains methods and properties that are common to all Source elements.
+    It shouldn't be used by itself. Subclasses should be used instead.
+    """
+
+    def __init__(self, name, SpeosSim, SpaceClaim):
+        super(Source, self).__init__(SpaceClaim, ["V19", "V20", "V21", "V22", "V23"])
+        self.speos_sim = SpeosSim
+        self.name = name
+        self.speos_object = None
+
+
+class SourceLightField(Source):
+    """
+    Provides methods for defining the Speos LocalMeshing.
+    """
+
+    def __init__(self, name, SpeosSim, SpaceClaim):
+        super(SourceLightField, self).__init__(name, SpeosSim, SpaceClaim)
+        if self.speos_sim.SourceLightField.Find(self.name):
+            self.speos_object = self.speos_sim.SourceLightField.Find(self.name)
+        else:
+            self.speos_object = self.speos_sim.SourceLightField.Create()
+            self.speos_object.Name = self.name