Method for producing an inhomogeneous film for selective reflection/transmission of solar radiation
US4322276A · kind A · utility
65Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1979 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Jun 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sputtered thin film coating characterized by a stepwise and/or variable refractive index as a function of film depth. By means of an in-line assembly of planar magnetrons, each magnetron essentially isolated from the others but for a region of sputtering overlap, select materials and combinations of said materials with reactive gases can be continuously deposited upon a dynamic substrate whereby to obtain pre-determined refractive index gradients. Substrates coated with an inhomogeneous thin film exhibit superior non-spectral reflective characteristics particularly desirable for architectural designs and applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.