# Optics

Lens optical power Calculation of the optical power of a lens.

Thin lens formula Conjugation relationship for a thin lens.

Freshton's thin lens equation Freshton conjugation relationship for a thin lens.

Law of Refraction Law of refraction or Snell's law.

Lens maker Equation Lens maker equation to calculate the power of a thin lens.

Light Speed in matter Calculate Light Speed from the medium refractive index

Other calculators