Ball Lens Focal Length Calculator

Ball Lens Focal Length Calculator calculator can be used to calculate the focal length of a ball lens based on its radius and refractive index.

Input Parameters

Calculation Results

Calculation Formula

Focal Length (f) = (2 * n * R) / (n - 1)

Where:
f = Focal Length
n = Refractive Index
R = Radius of the ball lens

Focal Length (mm):

Ball Lens Focal Length Calculator Calculator Usage Guide

Learn how to use the Ball Lens Focal Length Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the radius of the ball lens in millimeters (mm).
  2. Enter the refractive index of the material used for the ball lens.
  3. Click the "Calculate" button to compute the focal length.
  4. The focal length will be displayed in millimeters (mm).

Working Principle

The focal length of a ball lens can be calculated using the formula:

Focal Length (f) = (2 * n * R) / (n - 1)

Where:

  • f = Focal Length
  • n = Refractive Index
  • R = Radius of the ball lens

This formula is derived from the principles of geometric optics and is applicable for spherical lenses.