Non-iridescent infrared-reflecting coated glass
First Claim
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1. An article for solar energy control having at least two major substantially parallel surfaces comprising:
- a. at least one transparent sheet having two major substantially parallel surfaces;
b. disposed on one major surface of said sheet a transparent, infrared reflecting film at a thickness which exhibits visible interference color effects in reflection; and
c. disposed on another major surface of said article a transparent, uniformly reflecting masking film which does not exhibit interference color effects in reflection, said film having sufficient reflectance to mask the visible interference color effects in reflection of the infrared reflecting film, and said reflectance being uniform over the visible wave length range.
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Abstract
A noniridescent, high transmittance, low emissivity, infrared reflecting coated article for solar energy control and a method for its production are disclosed. The article comprises a transparent substrate, an infrared reflecting film which exhibits interference color effects, and a uniformly reflecting, transparent film which is sufficiently reflective in the visible range to mask the interference color effects of the infrared reflecting film.
95 Citations
23 Claims
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1. An article for solar energy control having at least two major substantially parallel surfaces comprising:
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a. at least one transparent sheet having two major substantially parallel surfaces; b. disposed on one major surface of said sheet a transparent, infrared reflecting film at a thickness which exhibits visible interference color effects in reflection; and c. disposed on another major surface of said article a transparent, uniformly reflecting masking film which does not exhibit interference color effects in reflection, said film having sufficient reflectance to mask the visible interference color effects in reflection of the infrared reflecting film, and said reflectance being uniform over the visible wave length range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A high transmittance, low emissivity multiple glazed window unit for solar energy control comprising:
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a. two glass sheets in parallel spaced relation; b. a transparent infrared reflecting film which exhibits visible interference color effects in reflection on one surface of one of said glass sheets; and c. a transparent, uniformly reflecting masking film which does not exhibit interference color effects in reflection on a parallel surface of one of said sheets said film having sufficient visible reflectance to mask the interference color effects in reflection of the infrared reflecting film, and said reflectance being uniform over the visible wavelength range. - View Dependent Claims (12, 13, 14, 15)
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16. A method for producing a noniridescent coated article for solar energy control comprising the steps of:
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a. coating one surface of a transparent substrate with an infrared reflecting film of a material which exhibits interference color effects in reflection at the desired effective thickness; and b. selecting a coating material and thickness sufficiently uniformly visibly reflecting to mask the visible interference color effects in reflectance of the infrared reflective film; and c. coating the surface substantially parallel with the infrared reflective film with a transparent, uniformly visibly reflecting masking film which does not exhibit interference color effects in reflection, said masking film having sufficient reflectance in the visible range to mask the interference color effects in reflection of the infrared reflecting film. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification