Light-weight mirror blank assembly

1. A light-weight mirror blank assembly, comprising:

a) one sheet of corrugated material made of glass; and

b) at least one face sheet made of identical glass attached to a surface of the sheet of corrugated material forming the light-weight mirror blank assembly, wherein the light-weight mirror blank assembly has an areal density less than an equivalent blank assembly having a solid support structure for supporting a mirrored surface, and

the one sheet of corrugated material comprising, in a first cross-section, a first continuous single line of round peaks connected to round valleys that substantially forms a first sine wave-like configuration, and

in a second cross-section, a second continuous single line of round peaks connected to round valleys that substantially forms a second sine wave-like configuration,

wherein the first cross-section is oriented transversely to the second cross-section, and

the round peaks form a hexagonal array of round peaks on the surface of the at least one face sheet.

2. The light-weight mirror blank assembly claimed in claim 1 , wherein the corrugated sheet of material is a continuous sheet of glass.

3. The light-weight mirror blank assembly claimed in claim 1 , wherein the corrugated sheet of material is either one or two-dimensional.

4. The light-weight mirror blank assembly claimed in claim 3 , wherein a two-dimensional corrugated sheet of material provides uniform support to the at least one face sheet.

5. The light-weight mirror blank assembly claimed in claim 4 , wherein the two-dimensional corrugated sheet of material provides rigidity in a plurality of directions across the least one face sheet.

6. The light-weight mirror blank assembly claimed in claim 1 , wherein the light-weight mirror blank assembly has an areal density less than 180 kg/m 2 .

7. The light-weight mirror blank assembly claimed in claim 1 , wherein the one sheet of corrugated material and the at least one sheet of face sheet are bonded therein using frit bonding, low temperature fusion, high temperature fusion, adhesive, cement, solvent welding, mechanical attachment.

8. The light-weight mirror blank assembly claimed in claim 1 , wherein the corrugated material forms a curved corrugated core.

9. A light-weight mirror blank assembly comprising:

a) one sheet of corrugated material made of glass; and

b) at least one face sheet made of identical glass attached to a surface of the sheet of corrugated material forming the light-weight mirror blank assembly, wherein the light-weight mirror blank assembly has an areal density less than an equivalent blank assembly having a solid support structure for supporting a mirrored surface, and

the one sheet of corrugated material comprising, in a first cross-section, a first continuous single line of round peaks connected to round valleys that substantially forms a first sine wave-like configuration, and

in a second cross-section, a second continuous single line of round peaks connected to round valleys that substantially forms a second sine wave-like configuration,

wherein the first cross-section is oriented transversely to the second cross-section, and

the round peaks are located on corners of a regular hexagon with one extra round peak located at a center.

10. A light-weight mirror blank assembly comprising:

a) one sheet of corrugated material made of glass; and

b) at least one face sheet made of identical glass attached to a surface of the sheet of corrugated material forming the light-weight mirror blank assembly, wherein the light-weight mirror blank assembly has an areal density less than an equivalent blank assembly having a solid support structure for supporting a mirrored surface, and

the one sheet of corrugated material comprising, in a first cross-section, a first continuous single line of round peaks connected to round valleys that substantially forms a first sine wave-like configuration, and

in a second cross-section, a second continuous single line of round peaks connected to round valleys that substantially forms a second sine wave-like configuration,

wherein the first cross-section is oriented transversely to the second cross-section, and

the round peaks and the round valleys are formed by two mating molds of a similar pattern, wherein one mating mold is shifted so that peaks of one mold is aligned with valleys of the other mold.