Glossary
- Plane parallel plate: optical component made of a refractive medium in between two plane and parallel surfaces
- Refraction index: for a transparent medium, ratio between the light speed in the air and the light speed in the medium ; for a reflective surface in the air or vacuum, the refraction index is « - 1 »
- Angle of incidence: angle of a light ray incident on a surface with the normal to the surface