如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: cFDxjX?~
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord ]{Z8
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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: y~dB5/
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(1) 使用 Zygo 干涉儀 5y040
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函數 @VFA(zoom #, surface #, height) "Tv:*L5
Surface is testable for @VFA < 1.0 X5 j=C]
Surface is not testable for @VFA > 1.0 =!<^^6LZ
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(2)使用 QED 干涉儀 )d:K:YXt
函數 @SSIa(surface #, zoom #, height) KxX[S.C
0 <= @SSIa < 0.5 - surface is readily testable _F^$aZt?e
0.5 <= @SSIa < 1 - surface is marginally testable Ox|TMSb^
@SSIa >= 1 - surface is difficult to test