Title:
GLASS PLATE, METHOD FOR INSPECTING END SURFACE OF GLASS PLATE, AND METHOD FOR MANUFACTURING GLASS PLATE
Document Type and Number:
Japanese Patent JP2018189552
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a glass plate more surely that generates an only extremely small amount of glass powders from the end surface by increasing the accuracy of inspecting the end surface.SOLUTION: The method for inspecting an end surface of a glass plate includes a first observation step of enlarging and observing a specific region R of a polished surface S1a formed on an end surface S1 of an inspection glass plate S and acquiring a first enlarged image; a cleaning step of cleaning the specific region R while applying external stimulation to the specific region R; a second observation step of enlarging the specific region R again and acquiring a second enlarged image; and an evaluation step of comparing the first enlarged image and the second enlarged image and counting the number of fine recesses in the specific region R formed after the first observation step.SELECTED DRAWING: Figure 4
Inventors:
TSUNODA HIROSHI
OKU HAYATO
ITO SHO
TAWADA YU
OKU HAYATO
ITO SHO
TAWADA YU
Application Number:
JP2017093229A
Publication Date:
November 29, 2018
Filing Date:
May 09, 2017
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO
International Classes:
G01N23/2202; C03C23/00; G01N23/2251; G02F1/13; G02F1/1333
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Shinichi Tomohiro
Tsuyoshi Kumano
Shinichi Tomohiro