Patent ID: 6859310

Claim:
A transmission filtering system comprising: a yellow film first filter; said first filter having a light transmission at wavelengths below 450 nm of less than 50%; and a second filter connected to said first filter, wherein said second filter is either: a light filter (a) comprising a heat reflecting film and a metallic layer, or a light filter (b) comprising a film having an IR transmission at wavelengths between 780 nm and 2500 nm of no more than 50%, or a light filter (c) comprising a multi-layered sputtered stack having a sheet resistance of less than 4 ohms per square whereby said filters are configured to attach to a substantially transparent subsurface, and whereby a combination of the filtering system and the subsurface causes a desired attenuation and filtering selected electromagnetic wavelengths, and whereby said dielectric of each dielectric layer has an index of refraction in the range of about 1.35 to 2.6.