3D Polarized Eyewear
First Claim
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1. An article of eyewear for viewing a 3D display, the article having at least one lens wherein the at least one lens comprises:
- a substrate lens material that is transparent to visible light and has a curved surface; and
a circular polarizer formed on the substrate lens material, wherein the circular polarizer comprises;
(i) a linear polarizer having a polarization axis; and
(ii) a quarter wave plate having a retardation axis that is inclined at substantially 45 degrees from the polarization axis along the curved surface,wherein either or both of the linear polarizer and the quarter wave plate are formed as sub-wavelength elongated structure devices.
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Abstract
An article of eyewear for viewing a 3D display has at least one lens, wherein the at least one lens has a substrate lens material that is transparent to visible light and has a curved surface. A circular polarizer is formed on the substrate lens material and has a linear polarizer with a polarization axis and a quarter wave plate with a retardation axis that is inclined at substantially 45 degrees from the polarization axis along the curved surface. Either or both of the linear polarizer and the quarter wave plate are formed as sub-wavelength elongated structure devices.
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Citations
15 Claims
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1. An article of eyewear for viewing a 3D display, the article having at least one lens wherein the at least one lens comprises:
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a substrate lens material that is transparent to visible light and has a curved surface; and a circular polarizer formed on the substrate lens material, wherein the circular polarizer comprises; (i) a linear polarizer having a polarization axis; and (ii) a quarter wave plate having a retardation axis that is inclined at substantially 45 degrees from the polarization axis along the curved surface, wherein either or both of the linear polarizer and the quarter wave plate are formed as sub-wavelength elongated structure devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14)
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11. An article of circularly polarized eyewear comprising:
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a curved substrate; a first set of sub-wavelength elongated structures formed on the curved substrate from a first material that has a first index of refraction wherein the ratio between the imaginary and real components of the first index of refraction equals or exceeds 0.2; and a second set of sub-wavelength elongated structures formed on the curved substrate from a second material that has a second index of refraction wherein the ratio between the imaginary and real components of the second index of refraction is less than 0.2. - View Dependent Claims (12, 13)
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15. An article of circularly polarized eyewear for viewing a 3D display having at least one lens, wherein the at least one lens comprises:
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a substrate lens material that is transparent to visible light and has a curved surface; and a circular polarizer formed as a cholesteric polarizer.
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Specification