Material having laser induced light redirecting features
View Patent ↗The present invention discloses a display panel 10 having a substrate 12 with one or more surfaces and one or more features 30 within the substrate 12 . When one or more surfaces of the substrate 12 are illuminated, the features 30 redirect the illumination to form an image.
1. A device comprising:
a glass substrate having a viewing surface; and
a plurality of fissures positioned within the substrate and at an angle to the viewing surface, wherein the fissures are configured to redirect electromagnetic radiation primarily in a predetermined direction and to form a predetermined image.
2. The device of claim 1 , wherein the fissures are configured to direct radiation from an interior of the substrate toward the viewing surface to form an image.
3. The device of claim 1 , wherein the fissures are configured to redirect electromagnetic radiation within a determined wavelength range.
4. The device of claim 3 , wherein the fissures are configured to redirect electromagnetic radiation within the IR and/or UV wavelength ranges.
5. The device of claim 1 , wherein the fissures are configured to direct electromagnetic radiation in a plurality of predetermined directions.
6. The device of claim 1 , wherein the fissures have a refractive index at least 0.002 different than the refractive index of the substrate.
7. The device of claim 1 , including a radiation source adjacent the display device.
8. The device of claim 1 , wherein the plurality of fissures comprises a tubular feature.
9. The device of claim 1 , wherein the device is a center high mounted stop lamp.
10. A display device, comprising:
a glass substrate having a viewing surface; and
a plurality of fissures positioned in the substrate and at an angle to the viewing surface, wherein the fissures are configured to redirect at least a portion of electromagnetic radiation in the substrate primarily toward the viewing surface and to form a predetermined image.
11. A display device, comprising:
a glass substrate having a viewing surface;
a plurality of fissures positioned in the substrate and at an angle to the viewing surface; and
an electromagnetic radiation source configured to introduce electromagnetic radiation into the substrate,
wherein the fissures are configured to redirect at least a portion of the electromagnetic radiation introduced into the substrate by the electromagnetic radiation source primarily toward the viewing surface and to form a predetermined image.
12. A method of making a display panel, comprising:
focusing a beam of radiation inside a glass substrate at an angle to a viewing surface of the substrate to form a fissure configured to redirect at least a portion of radiation introduced into the substrate primarily in a predetermined direction.