如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: LD~uI
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord +U_-Lq )
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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: NW4
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(1) 使用 Zygo 干涉儀 dE}b8|</
函數 @VFA(zoom #, surface #, height) wD?=u\% &
Surface is testable for @VFA < 1.0 {OhkuON
Surface is not testable for @VFA > 1.0 A_(+r
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(2)使用 QED 干涉儀 q* y9/HnI
函數 @SSIa(surface #, zoom #, height) M9 2~iM
0 <= @SSIa < 0.5 - surface is readily testable n0_Az2
0.5 <= @SSIa < 1 - surface is marginally testable H;t8(-F@'
@SSIa >= 1 - surface is difficult to test