00 |
J = 1 |
0 |
11 |
J = 2 |
2 |
1 – 1 |
J = 3 |
1 |
20 |
J = 4 |
4 |
2 – 2 |
J = 5 |
3 |
22 |
J = 6 |
5 |
3 – 1 |
J = 7 |
7 |
31 |
J = 8 |
8 |
3 – 3 |
J = 9 |
6 |
33 |
J = 10 |
9 |
40 |
J = 11 |
12 |
42 |
J = 12 |
13 |
4 – 2 |
J = 13 |
11 |
44 |
J = 14 |
14 |
4 – 4 |
J = 15 |
10 |
51 |
J = 16 |
18 |
1 |
Piston |
( Even, Even) |
q cosðhÞ |
Tilt( along x i) |
( Odd, Even) |
q sinðhÞ |
Tip( along y i) |
( Even, Odd) |
ð2q 2 � 1Þ |
Defocus |
( Even, Even) |
q 2 sinð2hÞ |
Primary astigmatism( at 45 °) |
( Odd, Odd) |
q 2 cosð2hÞ |
Primary astigmatism( at 0 °) |
( Even, Even) |
ð3q 3 � 2qÞ sinðhÞ |
Primary coma( along y i) |
( Even, Odd) |
ð3q 3 � 2qÞ cosðhÞ |
Primary coma( along x i) |
( Odd, Even) |
q 3 sinð3hÞ |
Trefoil( at 30 °) |
( Even, Odd) |
q 3 cosð3hÞ |
Trefoil( at 0 °) |
( Odd, Even) |
ð6q 4 � 6q 2 þ 1Þ |
Primary spherical aberration |
( Even, Even) |
ð4q 4 � 3q 2 Þ cosð2hÞ |
Secondary astigmatism( at 0 °) |
( Even, Even) |
ð4q 4 � 3q 2 Þ sinð2hÞ |
Secondary astigmatism( at 45 °) |
( Odd, Odd) |
q 4 cosð4hÞ |
Tetrafoil( at 0 °) |
( Even, Even) |
q 4 sinð4hÞ |
Tetrafoil( at 22.5 °) |
( Odd, Odd) |
ð10q 5 � 12q 3 þ 3qÞ cosðhÞ |
Secondary coma( along x i) |
( Odd, Even) |