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US 11,236,887 B2Granted
Optical structures for light emitting diodes (LEDs)
AssigneeEaton Intelligent Power Limited
InventorVirginia Merriam
Life of this patent
Estimating the term…
Abstract
A light system includes a substrate, one or more light emitting diodes (LEDs) coupled to the substrate, and an optical distribution plate positioned proximate the substrate. The optical distribution plate includes one or more optical structures each corresponding to the one or more LEDs. The one or more optical structures include a first surface that focuses LED light from the corresponding LED in a first orientation, and an opposite second surface that distributes LED light from the LED in a second orientation. The second orientation being substantially orthogonal to the first orientation.
Claims18
A light system comprising:
- a substrate;
- one or more light emitting diodes (LEDs) coupled to the substrate;
- and
- an optical distribution plate positioned proximate the substrate, the optical distribution plate comprising one or more optical structures each corresponding to the one or more LEDs, wherein the one or more optical structures comprise:
- a first surface that focuses LED light from the corresponding LED in a first orientation;
- and
- an opposite second surface that distributes LED light from the LED in a second orientation, wherein the second orientation is substantially orthogonal to the first orientation, wherein a centerline plane extending along the first orientation is defined on the second surface, wherein the second surface comprises a set of double total internal reflection (TIR) elements and at least one set of refractive elements, wherein the set of double TIR elements and the at least one set of refractive elements are positioned symmetrically about the centerline plane, and wherein each respective double TIR element reflects LED light both away from and across the centerline plane.
4 more elements
A light system comprising:
- a substrate;
- one or more light emitting diodes (LEDs) coupled to the substrate;
- and
- an optical distribution plate positioned proximate the substrate, the optical distribution plate comprising one or more optical structures each corresponding to the one or more LEDs, wherein the one or more optical structures comprise:
- a first surface that focuses LED light from the corresponding LED in a first orientation;
- and
- an opposite second surface that distributes LED light from the LED in a second orientation, wherein the second orientation is substantially orthogonal to the first orientation,
- wherein the second surface comprises a plurality of total internal reflection (TIR) elements and a plurality of refractive elements,
- wherein a centerline plane extending along the first orientation is defined on the second surface, and wherein a set of single TIR elements are positioned symmetrically adjacent the centerline plane and each single TIR element reflects LED light substantially away from the centerline plane,
- wherein a set of refractive elements are positioned symmetrically about the centerline plane and outside of the set of single TIR elements, and wherein each refractive element of the set of refractive elements refracts LED light substantially away from the centerline plane, and
- wherein a set of double TIR elements are positioned symmetrically about the centerline plane and outside of the set of refractive elements, and wherein each double TIR element reflects LED light substantially away from and across the centerline plane.
8 more elements
A light system comprising:
- a substrate;
- one or more light emitting diodes (LEDs) coupled to the substrate;
- and
- an optical distribution plate positioned proximate the substrate, the optical distribution plate comprising one or more optical structures each corresponding to the one or more LEDs, wherein the one or more optical structures comprise:
- a first surface that focuses LED light from the corresponding LED in a first orientation;
- and
- an opposite second surface that distributes LED light from the LED in a second orientation, wherein the second orientation is substantially orthogonal to the first orientation,
- wherein the second surface comprises a plurality of total internal reflection (TIR) elements and a plurality of refractive elements,
- wherein a centerline plane extending along the first orientation is defined on the second surface, and wherein a set of single TIR elements are positioned symmetrically adjacent the centerline plane and each single TIR element reflects LED light substantially away from the centerline plane,
- wherein a set of refractive elements are positioned symmetrically about the centerline plane and outside of the set of single TIR elements, and wherein each refractive element of the set of refractive elements refracts LED light substantially away from the centerline plane,
- wherein a set of double TIR elements are positioned symmetrically about the centerline plane and outside of the set of refractive elements, and wherein each double TIR element reflects LED light substantially away from and across the centerline plane, and
- wherein the set of refractive elements is a first set of refractive elements and a second set of refractive elements are positioned symmetrically about the centerline plane and outside of the set of double TIR elements, and wherein each refractive element of the second set of refractive elements refracts LED light substantially away from the centerline plane.
9 more elements
Dependencies are inferred from the claim text.