Focal Length of Optical Convex Calculator

Online optical calculator which calculates the value of focal length of convex lens by entering the values of surface radius and index of refraction.

Focal Length of Optical Convex Calculation

Surface Radii (R1) =
Surface Radii (R2) =
Index of Refraction (n) =
 
 
Focal Length (f) of convex lens =

Online optical calculator which calculates the value of focal length of convex lens by entering the values of surface radius and index of refraction.

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Formula:

f = (R1 × R2) / ((n-1) × (R2 - R1)) Where,
f = Focal Length
R1 = Surface Radii R1
R2 = Surface Radii R2
n = Index of Refraction

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