Title:
HIGH-PRECISION METHOD FOR DETERMINING THERMAL EXPANSION
Document Type and Number:
Japanese Patent JP2017040648
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for detecting thermal expansion of a low thermal expansion material with very high measurement accuracy of at most ±3 ppb/K or less and/or with a reproducibility of at most ±1 ppb/K or less.SOLUTION: An embodiment comprises a push rod 30, a fork 20, and springs for holding the push rod within the fork. The fork and the push rod are formed monolithically. An optical interferometer 60 is used as a detector to detect a position of the push rod relative to the fork.SELECTED DRAWING: Figure 1
Inventors:
ENGEL AXEL
CLEMENS KUNISCH
JEDAMZIK RALF
GERHARD WESTENBERGER
VISCHER PETER
CLEMENS KUNISCH
JEDAMZIK RALF
GERHARD WESTENBERGER
VISCHER PETER
Application Number:
JP2016144189A
Publication Date:
February 23, 2017
Filing Date:
July 22, 2016
Export Citation:
Assignee:
SCHOTT AG
International Classes:
G01N25/16
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima
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