Part 1. Regular errors
D, Lx, Ly, C |
Parameters of reference surface
D – sag of the sphere at the edge of pupil (D=0 for plane reference surface)
Lx, Ly – tilt of sphere
C – constant |
RMS(w) |
RMS of wavefront with regard to reference surface |
A, FIA |
value and angle of turn of astigmatism |
RMS(w-a) |
RMS of wavefront beyond astigmatism |
FA |
statistic estimation of the contribution of astigmatism to the complete wavefront distortion |
B0,B2,B4,... |
coefficients of zonal error at corresponding power P
( p*p = x*x + y*y ) or at Zernike polynomial |
RZ |
span of zonal error |
RMS(w-z) |
RMS of wavefront except zonal error |
FZ |
statistic estimation of the contribution of zonal error to the complete wavefront distortion |
C, FIC |
value and angle of turn of coma error |
RMS(w-c) |
RMS of wavefront except coma |
FC |
statistic estimation of the contribution of coma error to the complete wavefront distortion |
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Part 2. Local errors (errors of wavefront with power higher than 4th)
R |
span of local errors |
RMS(M) |
RMS of local errors |
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Part 3. Parameters of surface under control
RMS |
RMS of surface error (RMS = RMS(w) ) |
MIN |
minimal value of surface (valley) |
MAX |
maximal value of surface (peak) |
R |
span (PtV) |
STRL |
lower bound of Schtrel number |
STRM |
upper bound of Schtrel number |
X, Y |
test area coordinates |
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