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Title:
FLUORESCENT PARTICLES, INSPECTION DEVICE USING FLUORESCENT PARTICLES FOR VISUALIZING AND INSPECTING MOTION/MOVEMENT OF FLUID IN LOCATIONS WHERE FLUID IS PRESENT, AND INSPECTION METHOD USING FLUORESCENT PARTICLES FOR VISUALIZING AND INSPECTING MOTION/MOVEMENT OF FLUID IN LOCATIONS WHERE FLUID IS PRESENT
Document Type and Number:
WIPO Patent Application WO/2020/218337
Kind Code:
A1
Abstract:
[Problem] To provide: fluorescent particles that are used to create a fluorescent material for coating an object in the vicinity of a fluid, that move regularly in the fluid while suppressing halation generated by the objects, and that enable the motion/movement of the fluid to be sharply visualized; an inspection device; and an inspection method. [Solution] Substantially spherical fluorescent particles comprising a mixture containing at least one fluorescent material and a synthetic resin, wherein: the fluorescent material is excited by any purple visible light and UV rays having a wavelength of 290–405 nm, and emits visible light having a peak wavelength within the range of 410–620 nm; and the fluorescent particles have diameters of 100 nm to 1 mm and are distinguishable from bubbles and/or foreign bodies in the fluid when irradiated with the light.

Inventors:
MIYAHARA AKIRA (JP)
HORIE MASAAKI (JP)
Application Number:
PCT/JP2020/017336
Publication Date:
October 29, 2020
Filing Date:
April 22, 2020
Export Citation:
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Assignee:
CENTRAL TECHNO CORP (JP)
International Classes:
C09K11/06; G01P13/00
Domestic Patent References:
WO2018062522A12018-04-05
Foreign References:
JP2017226113A2017-12-28
JP2016027067A2016-02-18
JP2016027068A2016-02-18
JPH05297014A1993-11-12
JPS6258130A1987-03-13
JP2008180630A2008-08-07
JPS6258130A1987-03-13
JPS6258130B21987-12-04
Other References:
HORIE MASAAKI : "Flow smart visualization technology using a special prism and UV-excited fluorescent particles", 15 February 2018 (2018-02-15), pages 1 - 29, XP009524616, Retrieved from the Internet
See also references of EP 3922696A4
Attorney, Agent or Firm:
KIYOHARA Yoshihiro (JP)
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