pyoptools.raytrace.surface.powell module¶
Module that defines support for Aspherical optical surfaces
-
class
pyoptools.raytrace.surface.powell.
Powell
¶ Bases:
pyoptools.raytrace.surface.surface.Surface
Class that defines a Powell lens surface
A Powell lens surface is defined as:
Z=sqrt((1+K)*x**2- 2*R*x+y**2)
without an additional poly2d definition like in the aspherical surface case The values K and R correspond to the conicity and curvature respectively
- Example
>>> cs=Powell(shape=Circular(radius=2.5), K=-4.302, R=3.00)
-
K
¶
-
R
¶
-
normal
()¶ Return the vector normal to the surface
This method returns the vector normal to the asphere at a point
int_p=(x,y,z)
.Note: It uses
x
andy
to calculate thez
value and the normal.
-
poly
¶
-
topo
()¶ Returns the Z value for a given X and Y
This method returns the topography of the Powell lens surface to be used to plot the surface.
-
zmax
¶
-
zmin
¶