Light emitting panel assemblies
View Patent ↗Optical assembly includes a light emitter and a film through which light passes from the light emitter. The film has a uniform or variable pattern of individual deformities of well defined shape that are projections or depressions on or in one or more surface areas of the film. The deformities are quite small in relation to the width and length of the film. At least some of the deformities may have two or more surfaces that come together to form a ridge having a total length that is quite small in relation to the width and length of the film.
1. An optical assembly comprising at least a light emitter, a pattern of individual deformities of well defined shape that are projections or depressions on or in at least one side of the light emitter for controlling an output ray angle distribution of light emitted from at least one surface area of the light emitter to suit a particular application, the deformities being quite small in relation to a width and length of the light emitter, at least some of the deformities having at least two surfaces that come together to form a ridge having a total length that is quite small in relation to the width and length of the light emitter, at least some of the deformities interlocking or intersecting other deformities, and additional deformities that are projections or depressions on or in the opposite side of the light emitter.
2. The assembly of claim 1 wherein the additional deformities on or in the opposite side of the light emitter are quite small in relation to a width and length of the light emitter.
3. The assembly of claim 1 wherein only the deformities on or in the one side of the light emitter have ridges.
4. The assembly of claim 1 wherein at least some of the additional deformities on or in the opposite side of the light emitter have ridges.
5. The assembly of claim 4 wherein the ridges of at least some of the deformities on different sides of the light emitter are in different directions.
6. The assembly of claim 1 wherein the ridges of substantially all of the deformities on or in the one side of the light emitter are in the same direction.
7. The assembly of claim 1 wherein the deformities on or in the one side of the light emitter have a shape or pattern that reduces moiré or other interference effects in association with a display.
8. The assembly of claim 1 wherein the deformities on or in the one side of the light emitter are random to reduce moiré or other interference effects in association with a display.
9. The assembly of claim 1 wherein at least some of the deformities on or in the one side of the light emitter have angles that vary to direct light in different directions to produce a desired light output distribution or effect.
10. An optical assembly comprising at least a light emitter, a pattern of individual deformities of well defined shape that are projections or depressions on or in at least one side of the light emitter for controlling an output ray angle distribution of light emitted from at least one surface area of the light emitter to suit a particular application, the deformities being quite small in relation to a width and length of the light emitter, at least some of the deformities on or in the one side of the light emitter interlocking or intersecting other deformities, and additional deformities of well defined shape that are projections or depressions on or in an opposite side of the light emitter.
11. The assembly of claim 10 wherein the additional deformities on or in the opposite side of the light emitter are prismatic or lenticular.
12. The assembly of claim 10 wherein the additional deformities on or in the opposite side of the light emitter are quite small in relation to a width and length of the light emitter.
13. The assembly of claim 10 wherein the deformities on or in the one side of the light emitter have a shape or pattern that reduces moiré or other interference effects in association with a display.
14. The assembly of claim 10 wherein the deformities on or in the one side of the light emitter are random to reduce moiré or other interference effects in association with a display.
15. The assembly of claim 10 wherein at least some of the deformities on or in the one side of said light emitter have angles that vary to direct light in different directions to produce a desired light output distribution or effect.