如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: 4=Wtv/
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SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord n.323tNY
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如果想知道的是某一非球面的型狀是否能由干涉儀測量,那麼 Code V 提供兩個函數: tJ_6dH8Y
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(1) 使用 Zygo 干涉儀 f4h|Nn%;
函數 @VFA(zoom #, surface #, height) vZ
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Surface is testable for @VFA < 1.0 G>>`j2:y
Surface is not testable for @VFA > 1.0 |3a1hCxt
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(2)使用 QED 干涉儀 4dB6cg
函數 @SSIa(surface #, zoom #, height) xYg G
0 <= @SSIa < 0.5 - surface is readily testable l$1z%|I
0.5 <= @SSIa < 1 - surface is marginally testable j.b7<Vr4;
@SSIa >= 1 - surface is difficult to test