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Table 2 The optimal fitting parameters

From: Construct freeform surface directly in an initial layout of an off-axis reflective image system by seed curve extension and simulated annealing algorithm

Parameters on

Values

Parameters on

Values

c

−8.069e-04

X4

−0.046

k

− 8.049

X2Y2

−0.09191

Y

− 17.75

Y4

−0.046

X2

−1.553e-05

X4Y

−2.085e-03

Y2

4.44e-04

X2Y3

−1.185e-03

X2Y

2.515e-04

Y5

−9.392e-04

Y3

1.644e-04

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