Patent ID: 6783253
Filing Date: 2004-08-31
Classification: C03C,G02B,Y10T

Abstract:
A projection television including a first surface mirror for reflecting at least red, green and blue light components from a source toward a lens of the television so that an image can be viewed by a viewer, the first surface mirror comprising:a substrate supporting a coating, wherein the coating includes at least a reflective layer, first and second dielectric layers, and a layer comprising amorphous diamond-like carbon (DLC), wherein the reflective layer reflects at least said red, green and blue light components from said source toward said lens of said television so that an image can be viewed by a viewer of said television, wherein the reflective layer is provided between the substrate and the dielectric layers, and the layer comprising DLC is provided over the reflective layer and the dielectric layers. wherein the first dielectric layer has an index of refraction value â€œnâ€  greater than an index of refraction value â€œnâ€  of the reflective layer and less than an index of refraction value â€œnâ€  of the second dielectric layer, and the layer comprising DLC has an index of refraction value â€œnâ€  no greater than the index of refraction value â€œnâ€  of the second dielectric layer, and wherein the layer comprising DLC has an average density of at least about 2.4 gm/cm3 and at least about 40% of carbon-carbon bonds in the layer comprising DLC are sp3 type carbon- carbon bonds, and wherein the layer comprising DLC has an average hardness of at least about 10 GPa.