如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: A6q,"BS^d
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord qaG%PH}a
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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: wb"Jj
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(1) 使用 Zygo 干涉儀 $M$oNOT}Y
函數 @VFA(zoom #, surface #, height) f^:9gRt
Surface is testable for @VFA < 1.0 }Jjq] lW
Surface is not testable for @VFA > 1.0 !COaPrg
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(2)使用 QED 干涉儀 F!c%&Z
函數 @SSIa(surface #, zoom #, height) xO"5bj
0 <= @SSIa < 0.5 - surface is readily testable IDdhBdQ
0.5 <= @SSIa < 1 - surface is marginally testable 1p+2*c
@SSIa >= 1 - surface is difficult to test