PowerPhotonic Calculators Homepage
Optic Calculators
Lens Calculator
Please complete the input parameters below and the calculator will provide the appropriate outputs.
Input Parameters
Variable  Value 

Calculate Input From  mm 
Clear Aperture Shape  
Clear Aperture (CA)
i

mm 
Wavelength (λ) *  nm 
Conic Constant (k)
i


Centre Thickness (CT)  mm 
* Not required if "Radius of Curvature (RoC)" is selected as "Calculate Input From" value.
Output
Ref Index (n)  Maximum Sagitta  Maximum Slope (θ)  Numerical Aperture  Back Focal Length (BFL) 
