如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: BoJ@bOe#
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord =+ `I%>wc
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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: so_
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(1) 使用 Zygo 干涉儀 KIO{6
函數 @VFA(zoom #, surface #, height) v&oE!s#
Surface is testable for @VFA < 1.0 C(7uvQ
Surface is not testable for @VFA > 1.0 |u,2A1
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(2)使用 QED 干涉儀 ma.yI};$
函數 @SSIa(surface #, zoom #, height) OLpE0gZ.|`
0 <= @SSIa < 0.5 - surface is readily testable OV ~|@{6T
0.5 <= @SSIa < 1 - surface is marginally testable xq1=O
@SSIa >= 1 - surface is difficult to test