diff --git a/12.temporary_ins/65.geometrical-optics/50.simple-elements/10.dioptre/20.overview/plane-refracting-surface-1.jpg b/12.temporary_ins/65.geometrical-optics/50.simple-elements/10.dioptre/20.overview/plane-refracting-surface-1.jpg new file mode 100644 index 000000000..2d01dc520 Binary files /dev/null and b/12.temporary_ins/65.geometrical-optics/50.simple-elements/10.dioptre/20.overview/plane-refracting-surface-1.jpg differ