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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:
| 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
Hyperbola
Where
R = Radius
K =
Conic Constant
e =
Eccentricity
1/S1
+ 1/S2 = 1/EFL
Ellipse
Where
R = Radius
K =
Conic Constant
e =
Eccentricity
1/S1
+ 1/S2 = 1/EFL
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