Title:
光学用窓材、光学用窓材の製造方法、光学部材、及び光学部材の製造方法
Document Type and Number:
Japanese Patent JP7388119
Kind Code:
B2
Abstract:
To suppress cracking of a glass substrate that occurs when optical window materials are joined.SOLUTION: An optical window material 10 includes a glass substrate 11 and a flat viewing frame-shaped metal film 13 provided on a first main surface of the glass substrate 11. The inner peripheral edge 13d of the metal film 13 includes a plurality of convex portions 14 that protrudes relatively inward in the radial direction and a plurality of concave portions 15 that is relatively concave outward in the radial direction.SELECTED DRAWING: Figure 1
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Inventors:
Yoshimasa Yamaguchi
Application Number:
JP2019190173A
Publication Date:
November 29, 2023
Filing Date:
October 17, 2019
Export Citation:
Assignee:
Nippon Electric Glass Co., Ltd.
International Classes:
H01L23/02; G02B7/00
Domestic Patent References:
| JP2020129629A | ||||
| JP2020509942A | ||||
| JP2008298708A | ||||
| JP62265743A | ||||
| JP2004228098A |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda