초록 ▼

This disclosure describes transparent glass window structures of the type bearing a first coating of infra-red reflective material which is advantageously less than about 0.85 microns in thickness and wherein the observance of iridescence resulting from such a first coating is markedly reduced by pr

This disclosure describes transparent glass window structures of the type bearing a first coating of infra-red reflective material which is advantageously less than about 0.85 microns in thickness and wherein the observance of iridescence resulting from such a first coating is markedly reduced by provision of a second coating arranged in register with said first coating, the second coating providing at least two interfaces which, with the mass of the second coating, form means to reflect and refract light therefrom to interfere with the observation of iridescence. The invention also encompasses processes for providing such windows. A particular advantage of the invention is its efficacy with clear and lightly tinted glasses wherein the problem of iridescent color has had its greatest commercial impact.

대표청구항 ▼

In a structure formed of at least one transparent glass sheet and comprising thereon a first inorganic coating of an infra-red reflective material which material is of the type that is a transparent semiconductor and normally exhibits iridescent colors in daylight illumination, the improvement where

In a structure formed of at least one transparent glass sheet and comprising thereon a first inorganic coating of an infra-red reflective material which material is of the type that is a transparent semiconductor and normally exhibits iridescent colors in daylight illumination, the improvement wherein a second coating, is between said glass and said first coating, and said second coating forms means to substantially diminish iridescent colors of said first coating by providing at least two interfaces which form means, together with the mass of said second coating, to reflect and refract light such that the observability, in daylight illumination, of said iridescent colors is substantially reduced; and wherein said second coating has a refractive index defined as about the square root of the multiple of the refractive indices of said glass and said first coating, and wherein said second coating has a thickness of about ¼wavelength of light having a vacuum wavelength of about 500 nanometers.