
Pupil patterns
Here are the various pupil patterns that may be selected for layout views or analyses.
x-fan |
|
![]() |
Linear array of points sampling the interval from Px = -1 to Px = +1. This is the tangential scan. |
y-fan |
|
![]() |
Linear array of points sampling the interval from Py = -1 to Py = +1. This is the sagittal scan. |
hexapolar |
|
![]() |
A hex number (1, 7, 19, 37, 61, 91, ...) of points on a circularized hexagonal array. The edge of the pupil is half-way between the rings. |
Square |
|
![]() |
A square array of points. The edge of the pupil is half-way between the points on axis. The corner points are cut off by the stop, if it has an aperture assigned to it. |
Random |
|
![]() |
Random points in a circular pupil. |
Spiral |
|
![]() |
Spiral curve with equal irradiance per area of pupil. Tends to give smoother Encircled Energy plots. |