diff --git a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/04.stigmatism and conjugate-points/02.new-course-overview/cheatsheet.fr.md b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/04.stigmatism and conjugate-points/02.new-course-overview/cheatsheet.fr.md
index 2ed0a02ab..54dfed08a 100644
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/04.stigmatism and conjugate-points/02.new-course-overview/cheatsheet.fr.md	
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/04.stigmatism and conjugate-points/02.new-course-overview/cheatsheet.fr.md	
@@ -1,5 +1,29 @@
 ---
-title: 'nouveau cours : synthèse'
+title: Formation d'image et stigmatisme
+published : true
+visible : false
 ---
 
-nouveau cours : synthèse
\ No newline at end of file
+#### xxxx
+
+
+#### 
+
+![](ray-optics-spherical-refracting-surface-snell-law.jpg)
+
+#### 
+
+![](ray-optics-spherical-refracting-surface-non-stigmatism-paraxial-gauss-approximation_serieA_L1200.gif)
+
+#### 
+
+![](ray-optics-spherical-refracting-surface-stigmatism-paraxial-gauss-approximation_serieB_L1200_v2.gif)
+
+#### 
+
+![](ray-optics-spherical-refracting-surface-stigmatism-paraxial-gauss-approximation_serieC_L1200.gif)
+
+#### 
+
+![](ray-optics-spherical-refracting-surface-paraxial-gauss-conditions-approximation-serieD_L1200.gif)
+