如果採用 Code V 軟體，那麼可以用 SAGF 函數計算面深(Sag)量： nv*q
N\i'
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord -j`tBv)
@ bPQhn#(g
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: &$qqF&
BE:HO^-.1
(1) 使用 Zygo 干涉儀 {b "V7vn,
函數 @VFA(zoom #, surface #, height) h:<p EL
Surface is testable for @VFA < 1.0 !GURn1vcAe
Surface is not testable for @VFA > 1.0 |(*ReQ?=
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(2)使用 QED 干涉儀 V"#ie
Y n
函數 @SSIa(surface #, zoom #, height) 4W*52*'F,
0 <= @SSIa < 0.5 - surface is readily testable w{UVo1r:
0.5 <= @SSIa < 1 - surface is marginally testable BEx?
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@SSIa >= 1 - surface is difficult to test
