如果採用 Code V 軟體,那麼可以用 SAGF 函數計算面深(Sag)量: 0px@3/
SAGF(surface_num, zoom_pos, x_coord, y_coord) - Sag of the designated surface at x_coord, y_coord eR(PY{
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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: 4uv'l3
(=${@=!z
(1) 使用 Zygo 干涉儀 im^G{3z
函數 @VFA(zoom #, surface #, height) tr2@{xb
Surface is testable for @VFA < 1.0 ^f{+p*i}:
Surface is not testable for @VFA > 1.0 uXuMt
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>2gemTy
(2)使用 QED 干涉儀
Tx35~Z`0
函數 @SSIa(surface #, zoom #, height) VdR5ZP
0 <= @SSIa < 0.5 - surface is readily testable S @\Pki+n[
0.5 <= @SSIa < 1 - surface is marginally testable rMqWXGl`(
@SSIa >= 1 - surface is difficult to test