diff --git a/esbo_etc/classes/__init__.py b/esbo_etc/classes/__init__.py
index 714bfbd..6e9c53e 100644
--- a/esbo_etc/classes/__init__.py
+++ b/esbo_etc/classes/__init__.py
@@ -1,4 +1,5 @@
 from esbo_etc.classes.config import *
 from esbo_etc.classes.ITransmissive import *
+from esbo_etc.classes.SpectralQty import *
 from esbo_etc.classes.target import *
-from esbo_etc.classes.optical_component import *
\ No newline at end of file
+from esbo_etc.classes.optical_component import *
diff --git a/esbo_etc/classes/optical_component/__init__.py b/esbo_etc/classes/optical_component/__init__.py
index e811855..7d2626f 100644
--- a/esbo_etc/classes/optical_component/__init__.py
+++ b/esbo_etc/classes/optical_component/__init__.py
@@ -1 +1,3 @@
-from esbo_etc.classes.optical_component.AOpticalComponent import *
\ No newline at end of file
+from esbo_etc.classes.optical_component.AOpticalComponent import *
+from esbo_etc.classes.optical_component.Atmosphere import *
+from esbo_etc.classes.optical_component.StrayLight import *