DEVICE FOR CALIBRATING VIBRATION PICK-UP

Title:

DEVICE FOR CALIBRATING VIBRATION PICK-UP

Document Type and Number:

Japanese Patent JP3519864

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To fix an interference surface for creating interference fringes with a high contrast ratio and for increasing measurement stability and at the same time simplify the initial setting of a measurement system in a method for calibrating a vibration pick-up using the Michelson type interferometer.
SOLUTION: An optical wedge made of a transparent material with an inclination surface is provided so that it can be rotated within a laser beam 6 between a beam splitter 2 and a mirror (being fixed on the end face of a vibration pickup) 4a in the Michaelson type light wave interferometer, the optical wedge is rotated and operated for generating interference fringes with a high contrast ratio on a surface for receiving the reflection light of a beam splitter 2, thus improving measurement stability and simplifying the initial setting of a measurement system.

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Inventors:

Nakamura, Naoto
Furuta, Eiji
Ueda, Morimasa
Naoya KO.

Application Number:

JP8767196A

Publication Date:

April 19, 2004

Filing Date:

March 15, 1996

Export Citation:

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Assignee:

AKASHI:KK

International Classes:

G01P21/00; G01H9/00; G01H17/00; (IPC1-7): G01H9/00; G01H17/00; G01P21/00

Attorney, Agent or Firm:

荒船博司（外１名）

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