GLASS SUBSTRATE HAVING FINE STRUCTURES ON THE SURFACE THEREOF

• US 20130260095A1
• Filed: 02/19/2013
• Published: 10/03/2013
• Est. Priority Date: 03/30/2012
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: SHIMAZAKI, Yuzuru, NAITO, Takashi, SAWAI, Yuichi, FUJIEDA, Tadashi, MIYAUCHI, Akihiro, OGINO, Masahiko, AOYAGI, Takuya
• Application Number:
  US13/770,722
• Publication Number:
  US 20130260095A1
• Time in Patent Office: Days
• US Class Current: 428/141
• CPC Class Codes: C03C 3/16 containing phosphorus
• CPC Class Codes: C03C 3/21 containing titanium, zirconium, vanadium, tungsten or molybdenum
• CPC Class Codes: C03C 4/00 Compositions for glass with special properties
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Abstract

A glass substrate having a fine structure on the surface thereof, wherein said glass substrate is made of vanadium-containing glass and said vanadium-containing glass has a resistivity no higher than 10⁹ Ω·cm, with the content of vanadium (in the form of V₂O₅) being no less than 10 wt % and no more than 60 wt %. The glass substrate prevents dust attraction and retains its antifouling properties over a long period of time.

Claims

1. A glass substrate having a fine structure on the surface thereof, wherein said glass substrate is made of vanadium-containing glass, and said vanadium-containing glass has a resistivity no higher than 10⁹ Ω

·

cm.

2. The glass substrate as defined in claim 1, wherein the vanadium-containing glass contains V₂O₅, and the content of V₂O₅ is no less than 10 wt % and no more than 60 wt %.

3. The glass substrate as defined in claim 1, wherein the fine structure on the surface thereof is the one which is composed of projections and recesses having minimum dimensions no larger than 50 μ

m.

4. Antifouling glass having the glass substrate of claim 2 on part or all of the surface thereof.

5. An infrared sensor having a sensor window on the casing thereof, wherein said sensor window is made of the glass substrate defined in claim 2.

6. An illuminating lamp whose casing is provided with a cover glass, wherein said cover glass is made of the glass substrate defined in claim 2.