Anti-glare and anti-sparkle transparent structures
AssigneeCorning Incorporated
InventorsDana Craig Bookbinder, Shandon Dee Hart, Karl William Koch, III, James Andrew West
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Abstract
A distortion-reducing anti-glare (DRAG) structure is disclosed, wherein the DRAG structure includes first and second transparent mediums. The first transparent medium has a first refractive index and a first light-scattering anti-glare (AG) surface. The first AG surface by itself reduces glare but introduces an amount of distortion to the transmitted light. A second transparent medium having a second refractive index greater than the first refractive index is selectively added to the first transparent medium to reduce the amount of distortion in the transmitted light.
Claims18
An anti-glare light-transmitting structure that reduces an amount of glare from reflected ambient light and that has reduced optical distortion for light of wavelength λ transmitted through the light-transmitting structure, comprising:
- a first transparent medium having a first refractive index n1 and a light-scattering first surface that reduce glares and that by itself introduces an amount of distortion to the transmitted light;
- and
- a second transparent medium having a second refractive index n2 and a second surface that defines an interface to an ambient environment having a refractive index n3,
- wherein n2>n1>n3, and with the second transparent medium residing atop of and at least partially covering the first surface to reduce the amount of distortion introduced by the first surface;
- and
- wherein the first surface has a first surface shape h1(x,y), the second surface has a second surface shape h2(x,y), and h2(x,y) is within 50% of (n2−n1)/(n2−n3)·h1(x,y)+c, where c is a constant.
An anti-glare light-transmitting structure that reduces an amount of glare from reflected ambient light and that has reduced optical distortion of light of wavelength λ transmitted through the light-transmitting structure, comprising:
- a first transparent medium having a first refractive index n1 and a first surface that defines an interface to an ambient environment having a refractive index n3, wherein the first surface constitutes a light-scattering anti-glare surface comprising peaks and valleys that introduces an amount of distortion to the transmitted light;
- and
- a plurality of ion-diffused regions of refractive index n2>n1>n3 formed in the valleys that serve to reduce the amount of distortion in the transmitted light.
A method of forming an anti-glare light-transmitting structure that reduces an amount of glare from reflected ambient light and that has reduced optical distortion of light of wavelength λ transmitted through the light-transmitting structure, comprising:
- forming, on first transparent medium having a first refractive index n1, a light-scattering anti-glare first surface that by itself introduces an amount of distortion to the transmitted light;
- and
- adding a second transparent medium to the first surface of the first transparent medium, the second transparent medium having a second refractive index n2 and a second surface that interfaces with an ambient environment having a refractive index n3, wherein n2>n1>n3, with the second transparent medium covering at least a portion of the first surface to reduce the amount of distortion in the transmitted light, and
- wherein the light-scattering anti-glare first surface includes peaks and valleys, and wherein the second transparent medium does not cover the peaks.
A method of forming an anti-glare light-transmitting structure that reduces an amount of glare from reflected ambient light and that has reduced optical distortion of light of wavelength λ transmitted through the light-transmitting structure, comprising:
- forming a transparent medium having a first refractive index n1 and a light-scattering anti-glare first surface having peaks and valleys that by itself introduces an amount of distortion to the transmitted light;
- and
- adding ion-diffused regions to the first transparent medium, the ion-diffused regions having a second refractive index n2 and a second surface that interfaces with an ambient environment having a refractive index n3, wherein n2>n1>n3, with the ion-diffused regions formed in the valleys and configured to reduce the amount of distortion in the transmitted light.
An anti-glare light-transmitting structure comprising:
- a first transparent medium having a first refractive index n1 and a light-scattering first surface;
- and
- a second transparent medium having a second refractive index n2 and a second surface that defines an interface to an ambient environment having a refractive index n3,
- wherein n2>n1>n3,
- wherein the second transparent medium resides atop of and at least partially covers the first surface to reduce the amount of distortion introduced by the first surface;
- and
- wherein the light-scattering first surface includes peaks and valleys, and wherein the second transparent medium resides only in the valleys.
Dependencies are inferred from the claim text.