Patent ID: 7758915
Filing Date: 2010-07-20
Classification: C03C,G02B,Y10T

Abstract:
1. A method of producing coated substrates, the method comprising: a) providing a pane having generally-opposed first and second major surfaces; and b) depositing upon one of said major surfaces a low-emissivity coating comprising in sequence outwardly from the pane, an inner coat, a high absorption primary layer, a middle coat, and an infrared-reflective layer, the inner coat being deposited directly onto the pane, wherein said infrared-reflective layer comprises material that is highly reflective of infrared radiation, the high absorption primary layer comprises material that is highly absorptive of solar radiation and includes at least about 100 angstroms of film, the inner coat comprises at least one transparent dielectric film and has an optical thickness, the middle coat comprises at least one transparent dielectric film and has an optical thickness of between about 600 angstroms and about 1,800 angstroms, and wherein the coating has a ratio defined as the optical thickness of the inner coat divided by the optical thickness of the middle coat, said ratio being between about 0.15 and about 0.32.