Title:
METHOD FOR MANUFACTURING DOME GLASS, AIR-COOLING DEVICE AND DOME GLASS
Document Type and Number:
Japanese Patent JP2018145059
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide: a method for manufacturing dome glass, capable of polishing even a portion exceeding a hemisphere region and expanding a visual field, without having flaws on the surface layer or inside of the glass and obstructing a camera image; an air-cooling device; and dome glass.SOLUTION: A method for manufacturing dome glass comprises: a heating step of heating a plate-shaped glass material 1' consisting of borosilicate glass to the deformation point temperature; a molding step of pressing a glass material into a dome shape having a dome part 2 having a hemispherical concave surface 2a and a hemispherical convex surface 2b and a flange 4 by a die and holding the obtained molding at a predetermined temperature for a predetermined time in the die; a stress removing step of heating the molding and gradually cooling it to room temperature; and a processing step of forming a groove-like escape part 5 in the circumferential direction between the hemisphere final end of the convex surface of the molding dome part and the flange.SELECTED DRAWING: Figure 1
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Inventors:
MINAMIDE DAISUKE
MINAMIDE HIROHARU
MINAMIDE HIROHARU
Application Number:
JP2017042579A
Publication Date:
September 20, 2018
Filing Date:
March 07, 2017
Export Citation:
Assignee:
ORIENT BUREIN KK
International Classes:
C03B11/00; B24B9/14; B24C3/32; B24C5/04; B24C11/00; C03B27/012
Domestic Patent References:
| JP2010048923A | 2010-03-04 | |||
| JPS5964537A | 1984-04-12 |
Foreign References:
| WO2017022382A1 | 2017-02-09 |
Attorney, Agent or Firm:
Atsushi Maeda