diff --git a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/03.lens/02.lens-overview/Lentille_epaisse_principe_ok.gif b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/03.lens/02.lens-overview/Lentille_epaisse_principe_ok.gif deleted file mode 100644 index 5ca36b2d6..000000000 Binary files a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/03.lens/02.lens-overview/Lentille_epaisse_principe_ok.gif and /dev/null differ