Lens Manufacturer Equation-Focus, Lens Optical Capability Online Calculator
App description
Enter the value and click "Calculate" to display the result
f = focus
nl = refractive index of the lens material
nm = 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