Aspheric Data

Complex Aspheric Surface

For describing a special aspheric surface, please use the following universal equation. This will expedite our accurate response to your inquiries.

In this case the Z axis is parallel to the optical axis:

 Axis is Parallel Formula

C = 1/radius of curvature & K = -e2, where e is the eccentricity of the conic surface. The nature of the conic surface depends upon the value of K: Supplemental Equations:
C = 1/R Where is the base radius

R = 2.f Where f is the FL of the asphere

K = -e2 Where e is the eccentricity of the asphere


K < -1 Hyperboloid
K = -1 Paraboloid
K > -1 Ellipsoid
K = 0 Sphere
K > 0 Oblate Ellipsoid

Parabola

Where R = Radius

K = Conic Constant

EFL = Effective Focal Length

PFL = Parent Focal Length

 Parabola Diagram

Hyperbola

Where R = Radius

K = Conic Constant

e = Eccentricity

1/S1 + 1/S2 = 1/EFL

 Hyperbola Diagram

 

Ellipse

Where R = Radius

K = Conic Constant

e = Eccentricity

1/S1 + 1/S2 = 1/EFL

 Ellipse Diagram