Flexible lighting segment

• US 6,566,824 B2
• Filed: 10/16/2001
• Issued: 05/20/2003
• Est. Priority Date: 10/16/2001
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Teledyne Lighting & Display Products, Inc. (Teledyne Technologies Incorporated)
• Inventors: Panagotacos, George W., Pelka, David G.
• Primary Examiner(s): NGUYEN, HOANG V
• Application Number:
  US09/982,519
• Publication Number:
  US 20030071581A1
• Time in Patent Office: 581 Days
• Field of Search: 315/291, 315/178, 315/183, 315/210, 315/250, 315/324, 315/185, 362/249, 362/252, 362/246, 362/555, 362/800, 362/293, 362/295
• US Class Current: 315/291
• CPC Class Codes: F21S 4/10 with light sources attached to loose electric cables, e.g. Christmas tree lights
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 13/22 electroluminescent electroluminescent light sources per se H05B33/00

Abstract

An illumination apparatus comprises a lighting segment that includes a plurality of lighting sections. Each of the sections comprises a printed circuit board having a solid state optical emitter mounted thereon. The sections are interconnected by printed circuit board connectors, which serially position the printed circuit boards with edges of adjacent printed circuit boards proximate to each other. The connectors are deformable to alter the orientation in response to an applied force. The sections are electrically connected to each other such that the solid state optical emitters are electrically connected in series. The segment has a current regulator that controls current through the solid state optical emitter.

Claims

1. An illumination apparatus, comprising a lighting segment comprising a plurality of lighting sections, each of said sections comprising a printed circuit board having a solid state optical emitter mounted thereon, said sections interconnected by printed circuit board connectors which serially position said printed circuit boards with edges of adjacent printed circuit boards proximate to each other, said connectors being deformable to alter the orientation in response to an applied force, said sections being electrically connected to each other such that said solid state optical emitters are electrically connected in series, said segment having a current regulator which controls current through said solid state optical emitter.

2. The illumination apparatus of claim 1, further comprising an electrical connector electrically connecting the lighting segment in parallel with another lighting segment.

3. An illumination apparatus, comprising a lighting segment comprised of a plurality of electrically interconnected sections, adjacent ones of said sections being flexibly connected to each other by connections which permit relative movement therebetween, each of said sections comprising a solid state optical emitter and an optical element, at least one optical element being a first refractive element and at least another optical element selected from the group consisting of (1) a second refractive element having different refractive characteristics than the first refractive element and (2) an optical diverter having a total internal reflection surface.

4. A method of illuminating an elongate strip of translucent material, the method comprising:

configuring a lighting segment having a plurality of serially-connected lighting sections, wherein configuring the lighting segment includes altering a separation between at least two adjacent lighting sections;

energizing the plurality of series-connected light-emitting diodes to emit light;

passing light from the plurality of light-emitting diodes through a plurality of optical elements, respectively, each of said plurality of optical elements producing an elongated pattern having a substantially uniform intensity across said pattern; and

imbricating the elongated illumination patterns to substantially uniformly illuminate said elongate strip of translucent material.

5. The method of claim 4, wherein said strip of translucent material is illuminated to a uniformity of at least about 40% across said strip, wherein uniformity is defined as the difference between the maximum and minimum intensity across the strip divided by the sum of the maximum and minimum intensity across the strip.

6. The method of claim 5, wherein said strip of translucent material is illuminated to a uniformity of at least about 10% across said strip.

7. An illumination apparatus, comprising:

a segmented support structure comprising a plurality of sections which are movably connected to each other such that each section is movable in three orthogonal directions relative to an adjacent section;

a plurality of point sources mounted on said plurality of sections, respectively; and

a plurality of non-rotationally symmetric lenses mounted on said plurality of sections, respectively, to receive light from said plurality of point sources, respectively.

8. The apparatus of claim 7, wherein said point sources comprise light emitting diodes.

9. The apparatus of claim 7, wherein said plurality of point sources are electrically connected together.

10. The apparatus of claim 7, wherein said plurality of point sources are electrically connected in series.

11. The apparatus of claim 7, wherein at least one of said lenses comprises a non-imaging optical element.

12. An illumination apparatus, comprising:

a lighting segment, wherein the lighting segment includes;

a first lighting section, wherein the first lighting section includes;

a first printed circuit board; and

a first solid state optical emitter mounted on the printed circuit board;

a second lighting section connected to the first lighting section by a flexible interconnect such that the second lighting section can be moved in three orthogonal directions, wherein the second lighting section includes;

a second printed circuit board; and

a second solid state optical emitter mounted on the second printed circuit board and electrically connected in series with the first solid state optical emitter, and

a current regulator which regulates current through the first and second solid state optical emitters.

13. The apparatus of claim 12, wherein at least one of the first and second solid state emitters is selected from the group consisting of a laser diode and a light emitting diode.

14. The apparatus of claim 12, wherein the flexible interconnect includes a metal wire.

15. The apparatus of claim 12, wherein the flexible interconnect is selected from the group consisting of a conducting strip and a non-conducting strip.

16. The apparatus of claim 12, wherein the current regulator is mounted to one of the first and second printed circuit boards.

17. The apparatus of claim 12, wherein at least one of the first and second lighting sections further includes an optical element adjacent to the solid state optical emitter.

18. The apparatus of claim 17, wherein the optical element is attached to the solid state optical emitter.

19. The apparatus of claim 17, wherein the optical element is a non-imaging optical element.

20. The apparatus of claim 17, wherein the optical element is a lens.

21. The apparatus of claim 20, wherein the lens is a segmented lens.

22. The apparatus of claim 12, wherein at least one of the first and second lighting sections further includes a fastener attached thereto.

23. The apparatus of claim 12, wherein at least one of the first and second lighting sections further includes an electrical connector connected thereto.

24. The apparatus of claim 12, wherein the apparatus further includes a frame connected to at least one of the first and second printed circuit boards.

25. The apparatus of claim 12, further comprising a plurality of lighting segments.