DENTAL MIRROR WITH REFLECTIVE COATING

• US 20070268603A1
• Filed: 05/16/2007
• Published: 11/22/2007
• Est. Priority Date: 05/16/2006
• Status: Abandoned Application

• Current Assignee: Donnelly Corporation (Magna International Incorporated)
• Original Assignee: Donnelly Corporation (Magna International Incorporated)
• Inventors: McCabe, Ian
• Application Number:
  US11/749,449
• Publication Number:
  US 20070268603A1
• Time in Patent Office: Days
• US Class Current: 359/883
• CPC Class Codes: A61B 1/0011 Manufacturing of endoscope parts
• CPC Class Codes: A61B 1/247 with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
• CPC Class Codes: G02B 5/0808 having a single reflecting layer G02B5/0883, G02B5/0891 take precedence
• CPC Class Codes: G02B 5/0875 the reflecting layers comprising two or more metallic layers

Abstract

A mirrored substrate suitable for use in a dental mirror includes a glass substrate and a ruthenium coating deposited on the glass substrate. The ruthenium coating may be established at a front or first surface of the glass substrate, or the ruthenium coating may be established at a rear or second surface of the glass substrate. The ruthenium coating may have a coating thickness of about 250 angstroms to about 650 angstroms.

Claims

1. A mirrored substrate suitable for use in a dental mirror, said mirrored substrate comprising a glass substrate and a ruthenium coating deposited on said glass substrate.

2. The mirrored substrate of claim 1, wherein said ruthenium coating is established at a front or first surface of said glass substrate.

3. The mirrored substrate of claim 1, wherein said ruthenium coating is established at a rear or second surface of said glass substrate.

4. The mirrored substrate of claim 1, wherein said ruthenium coating has a coating thickness of about 250 angstroms to about 650 angstroms.

5. The mirrored substrate of claim 1, wherein said ruthenium coating has a coating thickness of about 350 angstroms to about 550 angstroms.

6. The mirrored substrate of claim 1, wherein said mirrored substrate includes an adhesion enhancing layer disposed at said surface of said glass substrate and between said ruthenium coating and said surface of said glass substrate.

7. The mirrored substrate of claim 6, wherein said adhesion enhancing layer has a layer thickness of about 150 angstroms to about 450 angstroms.

8. The mirrored substrate of claim. 6, wherein said mirrored substrate includes an optical layer overcoated over said ruthenium coating.

9. The mirrored substrate of claim 8, wherein said optical layer comprises a reflection enhancing layer.

10. The mirror substrate of claim 1, wherein said mirrored substrate has a specular reflectivity of at least about 70 percent reflectivity of light incident thereon as measured by SAE J964a.

11. A mirrored substrate suitable for use in a dental mirror, said mirrored substrate comprising a glass substrate and a ruthenium coating deposited on said glass substrate, wherein said ruthenium coating is established at a front or first surface of said glass substrate, said ruthenium coating having a coating thickness of greater than about 250 angstroms.

12. The mirrored substrate of claim 11, wherein said ruthenium coating is established at a rear surface of said glass substrate.

13. The mirrored substrate of claim 11, wherein said mirrored substrate includes an adhesion enhancing layer disposed at said surface of said glass substrate and between said ruthenium coating and said surface of said glass substrate.

14. The mirrored substrate of claim 13, wherein said adhesion enhancing layer has a layer thickness of about 150 angstroms to about 450 angstroms.

15. The mirrored substrate of claim 13, wherein said mirrored substrate includes an optical layer overcoated over said ruthenium coating.

16. The mirrored substrate of claim 15, wherein said optical layer comprises a reflection enhancing layer.

17. The mirror substrate of claim 11, wherein said mirrored substrate has a specular reflectivity of at least about 70 percent reflectivity of light incident thereon as measured by SAE J964a.