Solar reflecting mirror having a protective coating and method of making same
A technology of reflectors and sunglasses, applied in the direction of solar ray concentration, coatings, solar thermal devices, etc., can solve problems such as inefficiency
Inactive Publication Date: 2012-04-18
VITRO SAB DE CV
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- Application Information
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Problems solved by technology
One of the limitations of currently available alkaline barrier and / or scratch-resistant layers is that they are effective when used on flat or shaped surfaces of glass substrates, but are not effective when used on surfaces that are subsequently shaped into curved surfaces such as parabolic mirrors. Concave) is not effective when on a flat surface
There is little, if any, awareness and discussion in the prior art of the problems that must be addressed when shaping a substrate coated with a barrier and / or scratch resistant layer from a flat coated substrate to a parabolic coated substrate
Method used
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[0035] In the following discussion, spatial or directional terms such as "inner," "outer," "left," "right," "upper," "lower," "horizontal," "vertical," etc. are as they appear in the figures. As shown is relevant to the present invention. It is to be understood, however, that the invention is capable of various alternative orientations and, thus, such terms should not be taken as limiting. Moreover, all numbers expressing dimensions, physical properties, etc. used in the specification and claims should be understood to be variable in all instances by virtue of the term "about". Accordingly, unless indicated to the contrary, the numerical values set forth in the following specification and claims can vary based upon the desired properties sought to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the teachings as equivalents to the scope of the claims, each numerical parameter should be construed at least in light of ...
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A solar reflecting mirror includes a shaped glass substrate having a focal area, a reflective coating over its convex surface and a sodium ion barrier layer over its concave surface. The shaped substrate has a strain pattern having a radial tension strain at the bottom area, and circumferential compression strain at the periphery of the substrate. As the distance from the periphery of the shaped substrate increases, the circumferential compression strain decreases to a ''transition line'' where circumferential tension strain begins. As the distance from the transition line in a direction toward the bottom area of the glass substrate increases, the circumferential tension increases. To compensate for the strain pattern in the shaped glass substrate to avoid buckling of, and surface cracks of, the barrier layer, the barrier layer including an oxide of silicon and aluminum thickness, among other things is varied on. A method of making the solar mirror from shaped sections is also discussed.
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of US Provisional Patent Application Serial No. 61 / 164,047, filed March 27, 2009, entitled "ALKALI BARRIER LAYER." The entire contents of Application Serial No. 61 / 164,047 are incorporated herein by reference. [0003] This application is based on the subject-matter of: Abhinav Bhandari, Harry Buhay, William R. Siskos and James P. Thiel, filed on February 19, 2010, entitled "SOLAR REFLECTING MIRROR HAVING A PROTECTIVE COATING AND METHOD OF MAKING U.S. Patent Application Serial No. 12 / 709,045 to SAME (Sun Mirror with Protective Coating and Method of Making the Same); and James P. Thiel, filed February 19, 2010, entitled "SOLAR REFLECTING MIRROR AND METHOD OF MAKING SAME" US Patent Application Serial No. 12 / 709,091 and this application claims the benefit of US Provisional Patent Application Serial Nos. 12 / 709,045 and 12 / 709,091 . The entire contents of Application Serial Nos. 12 / 709,045 ...
Claims
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Login to View More IPC IPC(8): G02B1/10C03C17/00C03C17/245C03C17/36F24J2/10F24S23/70F24S23/71
CPCY02E10/42Y02E10/52G02B5/085G02B1/105F24J2/1057C03C17/3694C03C17/36C03C17/3663C03C17/3644F24J2/12C03C2218/365C03C2218/156F24S23/71F24S23/79F24S23/12F24S23/82G02B1/14Y02E10/40G02B1/10C03C17/00C03C17/245
Inventor A·班达里H·布海W·R·西斯科斯J·P·蒂尔
Owner VITRO SAB DE CV