如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: @' Er&[P
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord GA{Q6]B
fU+A~oL%I
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: J jCzCA:K_
U~SOHfZ%(
(1) 使用 Zygo 干涉儀 su`]l"[,]
函數 @VFA(zoom #, surface #, height) oy-Qy
Surface is testable for @VFA < 1.0 c{Ax{-'R
Surface is not testable for @VFA > 1.0 G}tq'#]E{z
9^m& [Z
(2)使用 QED 干涉儀 z^/aJ@gQ
函數 @SSIa(surface #, zoom #, height) MK]S205{
0 <= @SSIa < 0.5 - surface is readily testable ^ftZ{uA
0.5 <= @SSIa < 1 - surface is marginally testable iz`u@QKc%
@SSIa >= 1 - surface is difficult to test