Lens Manufacturer Equation-Focus, Lens Optical Capability Online Calculator

App description

Enter the value and click "Calculate" to display the result

f = focus

n_l = refractive index of the lens material

n_m = refractive index of the environmental medium

r₁ = radius of curvature of the first side

r₂ = radius of curvature of the second side

P = lens optical power

The lens manufacturer equation is used to determine the relative index of a lens that will appear as a
converging or diverging lens based on its curvature and lens material with the surrounding medium. This
equation is the radius of curvature R1 and R2 used to determine the focal length (thickness = 0) of the
thin lens.

The focal length of a lens in the air can be calculated by the lens manufacturer's equation. For thin lenses,
the power is about the sum of the power of the surface.

There are basically four factors that determine the refractive index of the lens of the focal length of a
lens, the refractive index of the environmental medium forming the lens, the radius of curvature of the front
surface of the lens, and the radius of curvature of the back surface of the lens. A lens with an equation
involving these numbers of focal lengths is called the lens manufacturer equation because its focal length is
given in the number of lenses involved in manufacturing.

The lens manufacturer equation is used to make glasses.

Usage example

Input data:

The radius of curvature of the first side: 15Cm

The radius of curvature of the second side: 10Cm

Refractive index of lens material: 15m

Refractive index of environmental medium: 25m

Click on calculation to output data

Focus: 75Cm

Lens optical power: 1.3333 diopter