Dioptre Formula
Dioptre Formula calculates the optical power of any lens. Dioptere is the unit for measuring the power of lens. Power of the lens is inversely proportional of the focal length of the lens.
D =1/ f
where,
D is the power in dioptres
f is the focal length of the lens
Power of a Lens
One of the most fascinating ideas of ray optics is the power of a lens. Simply stated, a lens’s capacity to bend light is its strength in Ray Optics. The ability of a lens to refract light that passes through it is proportional to its power. The converging ability of a convex lens is defined by its strength, while the diverging ability of a concave lens is defined by its diverging ability.
The focal length of a lens is inversely proportional to its intensity. High optical strength is aided by a short focal range. Therefore, let’s first discuss some basic concepts related to the power of the lens.