Substrate for mounting a plurality of light emitting elements

Patent metadata

Field	Value
Publication number	US-9337404-B2
Application number	US-201214004762-A
Country	US
Kind code	B2
Filing date	Mar 12, 2012
Priority date	Mar 22, 2011
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

The present invention relates to a substrate ( 1 ) comprising: a first segment ( 5 a ) provided with a first contact pad ( 22 a ) for connection of a first light emitting element ( 2 a ); and a second segment ( 5 b ) provided with a second contact pad ( 22 b ) for connection of a second light emitting element ( 2 b ), wherein the substrate is provided with at least one through-hole ( 6 a - c ) that extends from an edge ( 8,9 ) of the substrate to a point within the substrate, such that a relative movement, in a plane of the substrate, can be achieved between the first segment ( 5 a ) of the substrate and the second segment ( 5 b ) of the substrate by applying a mechanical force to the substrate. This makes very accurate alignment to a multiple cavity optical system possible without adjusting the optics, thereby enabling a more convenient and time efficient process in production.

First claim

The invention claimed is:

1. A light output device, comprising a substrate having:
a first segment provided with a first contact pad and a first light emitting element connected to the first contact pad; and
a second segment provided with a second contact pad and a second light emitting element connected to the second contact pad,
the substrate defining at least one through-hole that extends from an edge of said substrate to a point within said substrate, wherein said light output device further comprises an optical system comprising a first optical element for receiving light from the first light emitting element, and a second optical element for receiving light from the second light emitting element,
wherein said substrate and said optical system include corresponding sets of reference elements, wherein said sets of reference elements and said at least one through-hole are positioned and structured such that application of a mechanical force through mating of said sets of reference elements induces a relative movement, in a plane of the substrate, between the first segment of the substrate and the second segment of the substrate,
wherein each of the first and second light emitting elements are arranged to align with the first and second optical elements, respectively, through the application of the mechanical force.

2. The light output device according to claim 1 , wherein the at least one through-hole is a plurality of through-holes, wherein each of said through-holes extends from a respective edge of said substrate to a respective point within said substrate.

3. The light output device according to claim 2 , wherein a subset of said plurality of through-holes extends from a first edge of said substrate, whereas the rest of the plurality of through-holes extends from a second edge of said substrate opposite said first edge.

4. The light output device according to claim 1 , wherein the at least one through-hole is L-shaped.

5. The light output device according to claim 4 , wherein an end of the at least one through-hole located within said substrate has a rounded shape.

6. The light output device according to claim 5 , wherein the substrate is a non-conducting substrate provided with at least one electrical track that provides electrical connection to the contact pads.

7. The light output device according to claim 1 , wherein the set of reference elements on said substrate are a set of reference holes, and the set of reference elements on said optical system are a corresponding set of protrusions adapted to mate with said reference holes.

8. The light output device according to claim 7 , wherein said set of protrusions is tapered.

9. The light output device according to claim 1 , wherein the at least one through-hole is disposed between the first segment and the second segment.

10. A light output device, comprising a substrate having:
a first segment provided with a first contact pad and a first light emitting element connected to the first contact pad; and
a second segment provided with a second contact pad and a second light emitting element connected to the second contact pad,
the substrate defining at least one through-hole that extends from an edge of the substrate to a point within the substrate, wherein the light output device further comprises an optical system comprising a first optical element for receiving light from the first light emitting element, and a second optical element for receiving light from the second light emitting element,
wherein each of the first and second light emitting elements are arranged to mate and align with the first and second optical elements, respectively,
wherein the at least one through-hole are positioned and structured such that mating of the first and second optical element with the first and second light emitting elements, respectively, induces a relative movement, in a plane of the substrate, between the first segment of the substrate and the second segment of the substrate.

Assignees

• Cooijmans Huib
• Koninkl Philips Nv

Inventors

• Cooijmans Huib

Classifications

• H05K2201/09063

  Holes or slots in insulating substrate not used for electrical connections · CPC title

• H05K1/0242

  Structural details of individual signal conductors, e.g. related to the skin effect · CPC title

• H05K1/02

  Details · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• H05K2201/09263

  Meander · CPC title