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OPTICAL FIBER AND UNDERWATER SHOCKWAVE GENERATING DEVICE EMPLOYING SAME meetings

Foreign code F120006998
File No. S2012-0416-N0
Posted date Oct 29, 2012
Country WIPO
International application number 2011JP067140
International publication number WO 2012/053267
Date of international filing Jul 27, 2011
Date of international publication Apr 26, 2012
Priority data
  • P2010-234858 (Oct 19, 2010) JP
Title OPTICAL FIBER AND UNDERWATER SHOCKWAVE GENERATING DEVICE EMPLOYING SAME meetings
Abstract

Provided are an optical fiber which has good laser beam condensation efficiency and is highly resilient, and a shockwave generating device employing same. An optical fiber (11) is employed in an underwater shockwave generating device (10) which projects a laser beam underwater and generates an underwater shockwave. The optical fiber (11) comprises: a main body part (16)

and a laser convergence part (17) which is disposed upon a leading end thereof. The laser convergence part (17) is configured so as to exhibit an approximately frustum shape wherein the diameter of the leading end (18a) is narrower than the diameter of the base end (18b), and such that an interior angle ? with respect to a radial direction of a lateral face of an axial cross-section gradually decreases toward the front thereof.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • TOHOKU UNIVERSITY,
  • TAKAYAMA KAZUYOSHI,
  • YAMAMOTO HIROAKI,
  • SHIMOKAWA HIROAKI
  • Inventor
  • TAKAYAMA KAZUYOSHI,
  • YAMAMOTO HIROAKI,
  • SHIMOKAWA HIROAKI
IPC(International Patent Classification)
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