Astigmatism in Sportsglases

Calculation from Diepes/Blendowske "Optik und Technik der Brille".
A negative ΔS' could be compensated by the eye if ΔAmax is sufficient.

Parameters

r1 = mm
r2 = mm
d = mm
Ø = mm
n = 1,525 1,67 1,74 1,8
s0 = mm - ∞ - 38 cm
HSA = mm Standard HSA
y = mm Decentration
FSW = ° Tilt

Special Glastypes

6 dpt frontsurface
10 dpt frontsurface
biconcave
biconvex
planeconvex
planeconcav
zero miniscus
afocal lense 6.6%
S'F'=+5 dpt astigmatism free
S'F'=+5 dpt refraction right
S'F'=+5 dpt extra thin

Accuracy

0,01
0,125
0,25

Compensation

comp. Asti.
© 2013 T. Breitenstein, info@tobiasbreitenstein.de