System, apparatus, and methods for adjustable focal length light

Patent metadata

Field	Value
Publication number	US-11149924-B2
Application number	US-201916569958-A
Country	US
Kind code	B2
Filing date	Sep 13, 2019
Priority date	Sep 13, 2019
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

A lighting device is disclosed having a plurality of light emitting diodes of varying light intensities disposed about the same substrate. A lens is configured with a geometry that corresponds to different sections of the substrate containing the light emitting diodes of different light intensities.

First claim

The invention claimed is:

1. A portable lighting apparatus, comprising:
an LED assembly comprising a substrate and a plurality of co-planar LEDs disposed thereon, wherein the plurality of LEDs comprises a first plurality of LEDs having a first power rating and a second plurality of LEDs having a second power rating;
a power source coupled to the LED assembly and a control module, the control module configured to selectively power the first plurality of LEDs and the second plurality of LEDs;
a lens disposed about the LED assembly, said lens having a first portion corresponding to the first plurality of LEDs and a second portion corresponding to the second plurality of LEDs, wherein the geometry of the first portion of the lens is different than the geometry of the second portion of the lens.

2. The portable lighting apparatus of claim 1 , wherein the first plurality of LEDs have a power rating ranging from 110 lumens/watt to 150 lumens/watt and the second plurality of LEDs have a power rating ranging from 80 lumens/watt to 120 lumens/watt or 50 lumens/watt to 100 lumens/watt.

3. The portable lighting apparatus of claim 1 , wherein the geometry of the first portions of the lens comprises a plano-convex geometry and the second portion of the lens comprises a planar geometry.

4. The portable lighting apparatus of claim 3 , wherein the first portion of the lens has a focal length that is different than a focal length of a second portion of the lens.

5. The portable lighting apparatus of claim 1 , wherein the first plurality of LEDs are disposed within a first area that is at least partially enclosed by a second area, wherein the second plurality of LEDs are disposed within the second area.

6. The portable lighting apparatus of claim 5 , wherein the first plurality of LEDs are disposed about the substrate forming a first LED subassembly and the second plurality of LEDs are disposed about the substrate forming a second LED subassembly.

7. The portable lighting apparatus of claim 6 , wherein the substrate further comprises a support component disposed about a face of the substrate adjacent the first plurality of LEDs or the second plurality of LEDs, wherein the support component comprises a temperature sensor, a current controller, or a resistance controller.

8. A portable lighting apparatus, comprising:
a housing;
an LED assembly having a center disposed about the housing, said assembly comprising a first plurality of LEDs disposed about a fixed substrate having a first power rating and a second plurality of LEDs having a second power rating disposed about the fixed substrate, wherein each of the first power rating is different than the second power rating and wherein each of the first plurality of LEDs and each of the second plurality of LEDs have a top face;
a fluorescent binder disposed about the top face of each of the first plurality of LEDs and second plurality of LEDs;
a lens disposed about the housing, a center of the lens located coaxial with a center of the LED assembly; and
a power source disposed within the housing, said power source coupled to the LED assembly and a control module located within the housing, the control module configured to selectively power the first plurality of LEDs and the second plurality of LEDs to propagate light through the lens.

9. The portable lighting apparatus of claim 8 , wherein the fixed substrate approximates the shape of a dome and is curvilinear in a first direction and a second direction, the first direction being normal to the second direction.

10. The portable lighting apparatus of claim 9 , wherein the lens is plano-convex or concavo-convex.

11. The portable lighting apparatus of claim 8 , wherein the lens has a first portion corresponding to the first plurality of LEDs and a second portion corresponding to the second plurality of LEDs, the first portion of LEDs having a first fluorescent binder, the second portion of LEDs having a second fluorescent binder.

12. The portable lighting apparatus of claim 11 , wherein the first portion of the lens has a first focal length and the second portion of the lens has a second focal length, the first focal length being different than the second focal length.

13. The portable lighting apparatus of claim 8 , wherein the distance between the lens and the LED assembly is adjustable.

14. A method of propagating light from a portable lighting device, comprising:
providing power to an LED assembly, said LED assembly comprising a fixed planar substrate and a plurality of coplanar LEDs disposed thereon, wherein the plurality of LEDs comprises a first plurality of LEDs having a first power rating and a second plurality of LEDs having a second power rating and wherein a fluorescent binder is disposed about a top face of the first and second plurality of LEDs;
propagating light from the first plurality of LEDs through a first portion of a lens disposed coaxially with the LED assembly to form a first beam of light having a first pattern; and
propagating light from the second plurality of LEDs through a second portion of the lens to form a second beam of light having a second pattern.

15. The method of claim 14 , wherein the first portion of the lens has a first focal length and the second portion of the lens has a second focal length, the first focal length being different than the second focal length.

16. The method of claim 15 , further comprising the step of providing power to the first plurality of LEDs and the second plurality of LEDs simultaneously.

17. The method of claim 15 , further comprising adjusting the distance between the lens and the LED assembly to adjust the pattern of the first beam of light and the second beam of light.

18. A portable lighting apparatus, comprising:
an elongate housing having a distal end, a proximal end, and an axial direction;
a chip-on-board LED assembly comprising a fixed planar substrate and a plurality of coplanar LEDs, the chip-on-board LED assembly being disposed in a void within the housing and being configured to propagate a beam of light in a direction parallel with the axial direction of the housing;
a power source disposed within the housing, the power source coupled to the LED assembly and a control module, the control module configured to provide power to the LEDs; and
a lens disposed about a distal end of the elongate housing, the lens disposed in an axially adjustable position with respect to the LED assembly.

19. The portable lighting apparatus of claim 18 , wherein the LED assembly comprises a plurality of coplanar LEDs disposed on the fixed planar substrate, wherein the plurality of LEDs comprises a first plurality of LEDs having a first power rating and a second plurality of LEDs having a second power rating, the first power rating being different than the second power rating.

20. The portable lighting apparatus of claim 19 , wherein the first plurality of LEDs are disposed in an area corresponding to a first non-planar portion of the lens and the second plurality of LEDs are disposed in an area corresponding to a second planar portion of the lens.

21. The portable lighting apparatus of claim 19 , wherein the first plurality of LEDs correspond with a first portion of the lens and the second plurality of LEDs correspond with a second portion of the lens, the first portion of the lens having a different focal length than the second portion of the lens.

Assignees

• Alliance Sports Group Lp

Inventors

• Marcucci Todd
• Horne Gregory Lee

Classifications

• F21V5/04

  of lens shape · CPC title

• F21Y2107/20

  on convex supports or substrates, e.g. on the outer surface of spheres · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V23/009

  the casing being inside the housing of the lighting device · CPC title

• F21V5/006

  applied to portable lighting devices · CPC title