Absolute measurements of 3D shape using white-light interferometer
Absolute measurements of 3D shape using white-light interferometer
复制标题
使用白光干涉仪对 3D 形状进行绝对测量
DOI:
10.1117/12.140782
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发表时间:
1993
期刊:
影响因子:
--
通讯作者:
T. Yatagai
中科院分区:
文献类型:
--
作者:
M. Itoh;Ronglong Tian;T. Yatagai
In the Twyman-Green type interferometer the absolute height of a sample can be measured using a broad-band light source. The reference mirror is scanned along the optical axis to detect the point that the optical path difference is zero. We can obtain a three dimensional contour map without restricting 2(pi) phase unwrap. We constructed an interferometric system using a white-light as a light source and measured a step of 20 micrometers .