Non-iridescent transparent product
First Claim
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1. A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 μ
- m formed on the substrate, and an underlying layer, having a thickness of 10 to 500 Å
, formed at the boundary between the substrate and the film, wherein the underlying layer is an absorbing layer with an extinction coefficient k being at lest 0.01; and
wherein when the product is observed from the side of the transparent substrate opposite to the side the transparent film is applied on, the minimum value of the ripple ratio of the spectral reflectance curve in the visible light region is within ±
30%.
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Abstract
A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 μm formed on the substrate, and an underlying layer formed at the boundary between the substrate and the film, wherein the underlying layer is an absorbing layer with an extinction coefficient k being not 0.
20 Citations
15 Claims
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1. A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 μ
- m formed on the substrate, and an underlying layer, having a thickness of 10 to 500 Å
, formed at the boundary between the substrate and the film, wherein the underlying layer is an absorbing layer with an extinction coefficient k being at lest 0.01; and
wherein when the product is observed from the side of the transparent substrate opposite to the side the transparent film is applied on, the minimum value of the ripple ratio of the spectral reflectance curve in the visible light region is within ±
30%. - View Dependent Claims (2, 3, 4)
- m formed on the substrate, and an underlying layer, having a thickness of 10 to 500 Å
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5. A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 μ
- m formed on the substrate, and an overlying layer, having a thickness of 20 to 500 Å
, formed on the transparent film, wherein the overlying layer is an absorbing layer with an extinction coefficient k being at least 0.01; and
wherein when the product is observed from the transparent substrate side, the minimum value of the ripple ratio of the spectral reflectance curve in the visible light region is within ±
30%. - View Dependent Claims (6, 7, 8)
- m formed on the substrate, and an overlying layer, having a thickness of 20 to 500 Å
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9. A non-iridescent transparent product comprising a first transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 μ
- m formed on the substrate, and an overlying layer, having a thickness of 10 to 500 Å
, formed on the transparent film, and a second transparent substrate laminated on the overlying layer, wherein when the product is observed from the first transparent substrate side, the minimum value of the ripple ratio of the spectral reflectance curve in the visible light region is within ±
30%. - View Dependent Claims (10, 11)
- m formed on the substrate, and an overlying layer, having a thickness of 10 to 500 Å
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12. A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 μ
- m formed on the substrate, an underlying layer having a thickness of from 20 to 200 Å
formed at the boundary between the substrate and the film, and an overlying layer having a thickness of from 80 to 300 Å
formed on the transparent film, wherein both of the underlying and overlying layers with an extinction coefficient k being at least 0.01; and
wherein when the product is observed from the underlying layer side or from the overlying layer side, the minimum value in the visible light region of the ripple ratio of the spectral reflectance curve is within ±
30%. - View Dependent Claims (13, 14, 15)
- m formed on the substrate, an underlying layer having a thickness of from 20 to 200 Å
Specification