Transreflectors, transreflector systems and displays and methods of making transreflectors
View Patent ↗Light emitting assembly includes at least one film, sheet, plate or substrate positioned between a light source and a display for redirecting at least some of the light emitted by the light source. One side of the film, sheet, plate or substrate may have a pattern of reflective or refractive surfaces or deformities and the other side may have corresponding or aligned optical deformities of well defined shape. Light emitted from the light source that strikes a reflective or refractive surface or deformity on the one side of the film, sheet, plate or substrate passes through the film, sheet, plate or substrate and is redirected by at least one corresponding optical deformity on the other side of the film, sheet, plate or substrate.
1. A light emitting assembly comprising at least a light source, a display, and a film, sheet, plate or substrate positioned between the light source and the display, wherein one side of the film, sheet, plate or substrate has a pattern of reflective or refractive surfaces or deformities, and the other side of the film, sheet, plate or substrate has corresponding or aligned optical deformities of well defined shape, wherein light emitted from the light source that strikes a reflective or refractive surface or deformity on the one side of the film, sheet, plate or substrate passes through the film, sheet, plate or substrate and is redirected by at least one corresponding optical deformity on the other side of the film, sheet, plate or substrate, wherein the film, sheet, plate or substrate has multiple layers, and wherein at least one of the layers is an interior layer that has a pattern of reflective or refractive surfaces or optical deformities on at least one surface of the interior layer.
2. The assembly of claim 1 wherein at least some of the optical deformities on the other side of the film, sheet, plate or substrate intersect or interlock each other.
3. The assembly of claim 2 wherein the optical deformities are curved, rounded or semi-spherical in shape.
4. The assembly of claim 2 wherein the optical deformities have at least one curved surface.
5. The assembly of claim 2 wherein the optical deformities have at least one flat surface.
6. The assembly of claim 2 wherein the optical deformities have a ridge.
7. The assembly of claim 2 wherein the optical deformities are pyramid shaped.
8. The assembly of claim 2 which includes multiple light sources that emit different colors of light that mix to produce a desired light color.
9. The assembly of claim 8 wherein the different light colors are red, green and blue.
10. The assembly of claim 2 which includes multiple light sources that emit different colors of light that mix to produce white light.
11. The assembly of claim 2 wherein the light source comprises a plurality of light emitting diodes.
12. The assembly of claim 2 wherein the optical deformities are one or more of a pyramid with triangular shape sides, a frusto-pyramid with trapezoidal shape sides and a planar top, a relatively steep planar angled surface with long rounded or curved sides, a conical shape, a frusto-conical shape with a planar top, a relatively shallow sloping planar surface with steeper rounded or curved sides, a pair of intersecting oppositely sloping sides with oppositely rounded or curved ends, and a pair of oppositely sloping planar sides with oppositely rounded or curved ends and a planar top.
13. The assembly of claim 2 wherein the optical deformities are asymmetric.
14. The assembly of claim 2 wherein at least a portion of the film, sheet, plate or substrate is transparent.
15. The assembly of claim 2 wherein at least some of the optical deformities on the other side of the film, sheet, plate or substrate vary in at least one of the following characteristics: size, shape, angle, orientation, density and placement.
16. The assembly of claim 15 wherein the optical deformities on the other side of the film, sheet, plate or substrate vary randomly.
17. The assembly of claim 2 wherein there is an air gap between the light source and the reflective or refractive surfaces or deformities on the one side of the film, sheet, plate or substrate.
18. The assembly of claim 2 wherein the deformities on the one side of the film, sheet, plate or substrate are different from the optical deformities on the other side.
19. The assembly of claim 1 wherein at least one of the layers is an ultra-violet (UV) curable material.
20. The assembly of claim 2 wherein at least one of the layers is exterior to the one side or the other side of the film, sheet, plate or substrate.
21. The assembly of claim 2 further comprising an additional layer overlying at least one of the one side or the other side of the film, sheet, plate or substrate.
22. The assembly of claim 1 wherein at least some of the optical deformities on the other side of the film, sheet, plate or substrate vary in at least one of size, shape, angle, orientation, density and placement.
23. The assembly of claim 22 wherein there is an air gap between the light source and the reflective or refractive surfaces or deformities on the one side of the film, sheet, plate or substrate.
24. The assembly of claim 1 wherein the deformities on the one side and on the other side of the film, sheet, plate or substrate substantially cover an entire surface of the one side and the other sides.