如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: !Xv2PdP
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord 7zJh;f/
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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: X{9JSq
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(1) 使用 Zygo 干涉儀 kVG6\<c]
函數 @VFA(zoom #, surface #, height) "k_n+cH%
Surface is testable for @VFA < 1.0 ixI5Xd<
Surface is not testable for @VFA > 1.0 9-Nq[i"
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(2)使用 QED 干涉儀 '#An+;x{
函數 @SSIa(surface #, zoom #, height) tr9_bl&z
0 <= @SSIa < 0.5 - surface is readily testable }TAGr 0
0.5 <= @SSIa < 1 - surface is marginally testable @e?[oojrM
@SSIa >= 1 - surface is difficult to test