Glass mirror apparatus and methods of manufacturing a glass mirror apparatus

• US 10,551,590 B2
• Filed: 02/26/2014
• Issued: 02/04/2020
• Est. Priority Date: 02/28/2013
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Nitz, Christopher Alan, McDonald, Michael Aaron, Zhang, Chunhe
• Primary Examiner(s): Shafer, Ricky D
• Application Number:
  US14/768,849
• Publication Number:
  US 20160004033A1
• Time in Patent Office: 2,169 Days
• Field of Search: 359840, 359872, 359883, 359871, 359900, 65 3013, 65 3014
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10137 Chemical strengthening
• CPC Class Codes: B32B 17/1022 Metallic coatings
• CPC Class Codes: B32B 17/10743 containing acrylate (co)polymers or salts thereof
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: C03C 17/06 with metals C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 17/3663 specially adapted for use as mirrors
• CPC Class Codes: C03C 27/10 with the aid of adhesive specially adapted for that purpose
• CPC Class Codes: G02B 1/14 Protective coatings, e.g. hard coatings
• CPC Class Codes: G02B 5/0808 having a single reflecting layer G02B5/0883, G02B5/0891 take precedence
• CPC Class Codes: G02B 5/0816 Multilayer mirrors, i.e. having two or more reflecting layers G02B5/0883, G02B5/0891 take precedence
• CPC Class Codes: G02B 7/182 for mirrors

Abstract

Example methods of manufacturing a glass mirror apparatus includes the step of providing a chemically strengthened glass sheet with a thickness of less than or equal to about 2 mm. The method further includes the step of applying a reflective layer to the second major surface of the glass sheet to provide a first glass mirror. In further examples, a glass mirror apparatus comprises a chemically strengthened glass sheet with a thickness of less than or equal to about 2 mm. A reflective layer applied to the second major surface of the glass sheet to provide a first glass mirror.

Claims

1. A method of manufacturing a glass mirror apparatus, there method comprising:

applying a reflective layer to a second major surface of a chemically strengthened glass sheet to provide a first glass mirror, the glass sheet comprising a thickness defined between a first major surface and the second major surface of the glass sheet, wherein the thickness is less than or equal to about 2 mm;

laminating the first glass mirror to a support layer with a bonding layer, providing a second chemically strengthened glass sheet with a thickness defined between a first major surface and a second major surface of the second glass sheet, wherein the thickness is less than or equal to about 2 mm;

applying a reflective layer to the second major surface of the second glass sheet to provide a second glass mirror, the second glass sheet comprising a thickness defined between the first major surface and the second major surface of the second glass sheet, wherein the thickness is less than or equal to about 2 mm; and

bonding the first glass mirror to the second glass mirror to provide a double-sided mirror;

wherein the bonding layer comprises a compound layer having a structural layer sandwiched between two adhesive layers, and

wherein the glass sheets comprises aluminosilicate glass, or alkali-aluminoborosilicate glass.

2. The method of claim 1, wherein the thickness of the glass sheets is within a range of from about 0.5 mm to about 1.2 mm.

3. The method of claim 1, wherein the glass sheets comprises an ion exchanged chemically strengthened glass sheet.

4. The method of claim 3, wherein the strengthened glass sheets comprises a compressive stress within a range of from about 500 MPa to about 800 MPa.

5. The method of claim 3, wherein the strengthened glass sheets comprises a depth of layer within a range of from about 35 μ

m to about 45 μ

m.

6. The method of claim 1, wherein the first major surface of the glass sheets comprises an acid-etched surface.

7. The method of claim 1, wherein the bonding layer has a thickness of from about 0.05 mm to about 4 mm.

8. The method of claim 1, wherein the support layer comprises a chemically strengthened glass support sheet having a thickness of from about 0.5 mm to about 2 mm.

9. A glass mirror apparatus comprising:

a support layer;

a first chemically strengthened glass sheet with a thickness defined between a first major surface and a second major surface of the glass sheet, wherein the thickness is less than or equal to about 2 mm;

a reflective layer applied to the second major surface of the first glass sheets to provide a first glass mirror;

a bonding layer laminating the first glass mirror to the support layer,

a second chemically strengthened glass sheet with a thickness defined between a first major surface and a second major surface of the second glass sheet, wherein the thickness is less than or equal to about 2 mm; and

a reflective layer applied to the second major surface of the second glass sheet to provide a second glass mirror,

wherein the bonding layer comprises a compound layer having a structural layer sandwiched between two adhesive layers,

wherein the glass sheet comprises aluminosilicate glass, or alkali-aluminoborosilicate glass, and

wherein the first glass mirror is bonded to the second glass mirror to provide a double-sided mirror.

10. The apparatus of claim 9, wherein the thickness of the glass sheets is within a range of from about 0.5 mm to about 1.2 mm.

11. The apparatus of claim 9, wherein the glass sheets comprises an ion exchanged chemically strengthened glass sheet.

12. The apparatus of claim 11, wherein the strengthened glass sheets includes a compressive stress within a range of from about 500 MPa to about 800 MPa.

13. The apparatus of claim 11, wherein the strengthened glass sheets includes a depth of layer within a range of from about 35 μ

m to about 45 μ

m.

14. The apparatus of claim 9, wherein the first major surface of the glass sheets comprises an acid-etched surface.

15. The apparatus of claim 9, wherein the bonding layer has a thickness of from about 0.05 mm to about 4 mm.

16. The apparatus of claim 9, wherein the support layer comprises a chemically strengthened glass support sheet having a thickness of from about 0.5 mm to about 2 mm.