Image formation

Image Formation

• Units and Variables

  • M - magnification
  • i - image height
  • o - object height
  • f - focal point
  • R - lens radius
• $M=-\frac{i}{o}$

• If |M| > 1, the image is enlarged.

• If M is positive, the image is upright.

• $\frac{1}{f}=\frac{1}{o}+\frac{1}{i}$
• $f=\frac{1}{2}R$
• $\frac{1}{f}=\left(n-1\right)\left(\frac{1}{R_1}-\frac{1}{R_2}\right)$