Optical structures that provide directionally enhanced luminance
First Claim
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1. An optical structure, comprising:
- a light source emitting light in a first wavelength range; and
a light redirecting element arranged to receive light from the light source and provide redirected light redirected in a preferred direction or orientation, wherein the light redirecting element comprises a material which absorbs light in a second wavelength range within the first wavelength range such that the redirected light is in a third wavelength range.
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Abstract
An optical structure is described. The optical structure includes a light source emitting light in a first wavelength range. The optical structure also includes a light redirecting element arranged to receive light from the light source and provide redirected light redirected in a preferred direction or orientation. The light redirecting element comprises a material which absorbs light in a second wavelength range within the first wavelength range such that the redirected light is in a third wavelength range.
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Citations
25 Claims
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1. An optical structure, comprising:
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a light source emitting light in a first wavelength range; and
a light redirecting element arranged to receive light from the light source and provide redirected light redirected in a preferred direction or orientation, wherein the light redirecting element comprises a material which absorbs light in a second wavelength range within the first wavelength range such that the redirected light is in a third wavelength range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An optical display comprising:
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a light source emitting light in a first wavelength range; and
a light redirecting element comprising at least one brightness enhancement film arranged to receive light from the light source and provide redirected light redirected in a preferred direction or orientation, wherein the light redirecting element comprises a material which absorbs light in a second wavelength range within the first wavelength range such that the redirected light is in a third wavelength range, wherein the at least one brightness enhancement film comprises at least one polymer selected from the group consisting of resorcinol based polyarylates, polycarbonates, polyester carbonates, polyesters, brominated polycarbonates, polyphthalatecarbonates, and polyimides. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification