Light-emitting devices and lens therefor
AssigneeHong Kong Applied Science and Technology Research Institute Company Limited
InventorsMing Lu, Lei Shi, Chak Hau Pang
Life of this patent
Estimating the term…
Abstract
A light-emitting assembly comprising a lens, a first optical source, a second optical source and a third optical source, wherein the lens is disposed forward of said first, second and third optical sources; the third optical source is intermediate the first and second optical sources; and the lens and the first, second and third optical sources are arranged so that light emitted from the first and second optical sources merges at the third optical source after undergoing internal reflection at the lens.
Claims30
A light-emitting assembly comprising a lens, a first optical source, a second optical source and a third optical source, wherein said lens is disposed forward of said first, second and third optical sources;
- said third optical source is intermediate said first and second optical sources;
- and said lens and said first, second and third optical sources are arranged so that light emitted from said first and second optical sources merges at said third optical source after undergoing internal reflection at said lens and said light is, forwardly transmitted after mixing with light of said third optical source.
A lens for conditioning optical output from at least first, second and third light-emitting sources for forward light transmission comprising a first concave portion and a second concave portion, wherein said first concave portion is configured to reflect light emitted by said first light-emitting source towards a third light-emitting source, said second concave portion is configured to reflect light emitted by said second light-emitting source towards said third light-emitting source, and said lens is configured to allow forward passage of light emitted from said third light-emitting source.
A lens for mixing light from a plurality of peripheral light-emitting sources with a central light-emitting source for forward transmission comprising a plurality of concave portions, wherein each said concave portion forms part of a hollow ellipsoid with said central optical source for positioning at a common foci, and said plurality of peripheral light-emitting sources are distributed at other foci locations of the plurality of hollow ellipsoids forming said plurality of concave portions.
Dependencies are inferred from the claim text.