Magnification and Vergence
This page covers the mathematical relationships governing image magnification and lens vergence, including multiple lens systems.
Definition: Vergence (C) is the optical power of a lens, measured in diopters, representing its ability to converge or diverge light.
Example: For a system of three lenses, the total vergence is calculated as C = C₁ + C₂ + C₃
Highlight: The magnification formula determines the size relationship between the object and its image.
Vocabulary:
- Magnification (grandissement): The ratio of image size to object size
- Diopter: The unit of measurement for lens vergence
- Multiple lens system: An optical arrangement using two or more lenses in combination



