NON-CONTACT SURFACE-SHAPE MEASURMENT METHOD AND APPARATUS USING WHITE LIGHT INTERFEROMETER OPTICAL HEAD
Germany Patent
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Abstract
Ein berührungsloses Oberflächenformmessverfahren verwendet einen Weißlichtinterferometer-Optikkopf, der Licht, das von einer Weißlichtquelle emittiert wird, durch einen Strahlteiler in Referenzlicht für einen Referenzspiegel und Messlicht für eine Messobjektoberfläche aufteilt; ein Bild mit Interferenzstreifen, die von einem Unterschied in Bezug auf den optischen Weg von Licht, das von dem Referenzspiegel reflektiert wird, und Licht, das von der Messobjektoberfläche reflektiert wird, erlangt und zum Abtasten in einer vertikalen Richtung bezüglich der Messobjektoberfläche verschoben wird, um das Bild mit Interferenzstreifen zu erlangen. Während der Weißlichtinterferometer-Optikkopf in einer Abtastrichtung verschoben wird, wird eine Position des Optikkopfs in der Abtastrichtung erkannt und das Bild mit Interferenzstreifen wird in vorherbestimmten räumlichen Intervallen in der Abtastrichtung erlangt.

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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
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Patent Owner(s)
Patent Owner | Address |
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MITUTOYO CORP | JPKANAGAWA JAPAN |
International Classification(s)
Inventor(s)
Inventor Name | Address |
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WATANABE YUTAKA | 〒1056409 東京都港区虎ノ門一丁目17番1号 株式会社日立ハイテク内 TOKYO ?1056409 |
SAEKI TAKESHI | TOKYO |
MAEDA TAKUHO | NONOICHI |
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