Conversion element including a separating structure

Patent metadata

Field	Value
Publication number	US-2016146434-A1
Application number	US-201414902995-A
Country	US
Kind code	A1
Filing date	Jul 3, 2014
Priority date	Jul 9, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A conversion element includes a separating structure and a multiplicity of conversion regions, wherein each conversion region is at least partly enclosed by a part of the separating structure, and each conversion region converts electromagnetic primary radiation at least partly into a secondary radiation having a longer wavelength.

First claim

1 .- 15 . (canceled)

16 . A conversion element comprising a separating structure and a multiplicity of conversion regions, wherein each conversion region is at least partly enclosed by a part of the separating structure, and each conversion region converts electromagnetic primary radiation at least partly into a secondary radiation having a longer wavelength.

17 . The conversion element according to claim 16 , wherein the separating structure is nontransmissive to the primary radiation and/or to the secondary radiation.

18 . The conversion element according to claim 16 , wherein the conversion element is nontransmissive to the primary radiation and/or to the secondary radiation in directions perpendicular to a preferred direction.

19 . The conversion element according to claim 18 , wherein, in each plane perpendicular to the preferred direction, each conversion region is at least partly enclosed by a part of the separating structure.

20 . The conversion element according to claim 18 , wherein, in each conversion region, the cross section perpendicular to the preferred direction is constant along the preferred direction.

21 . The conversion element according to claim 18 , wherein the cross section of the conversion regions perpendicular to the preferred direction has a polygon shape.

22 . The conversion element according to claim 18 , wherein, in a plane perpendicular to the preferred direction, the conversion regions are arranged in a two-dimensional lattice.

23 . The conversion element according to claim 16 , wherein the separating structure comprises a multiplicity of separating walls and a separating wall is arranged between two adjacent conversion regions.

24 . The conversion element according to claim 16 , wherein the conversion regions are arranged on a reflective layer.

25 . The conversion element according to claim 16 , wherein the separating structure contains a metal or consists of a metal.

26 . A headlight comprising a conversion element according to claim 16 .

27 . A lighting device comprising a conversion element according to claim 16 , further comprising at least one laser light source at a distance from the conversion element.

28 . A method of producing a conversion element comprising:
providing a multiplicity of stack elements, wherein a cross section of at least some of the stack elements in at least one sectional area perpendicular to a main extension plane of the respective stack element is substantially curve-shaped and runs alternately on both sides of a straight line of intersection between the sectional area and the main extension plane; applying a conversion material to two surfaces of at least some of the stack elements; stacking the multiplicity of stack elements along a normal direction running perpendicular to the main extension planes of the stack elements, connecting the multiplicity of stack elements such that a layer stack arises; and cutting the layer stack in parallel cutting planes.

29 . The method according to claim 28 , wherein a height of each stack element perpendicular to its main extension plane is less than 10% of its maximum extent in a main extension plane.

30 . The method according to claim 28 , wherein the cutting planes are parallel to a normal direction.

31 . A conversion element comprising a separating structure and a multiplicity of conversion regions, wherein each conversion region is at least partly enclosed by a part of the separating structure, each conversion region converts electromagnetic primary radiation at least partly into a secondary radiation having a longer wavelength, and each part of the separating structure that partly or completely encloses a respective conversion region comprises two partial elements fixed to one another.

32 . The conversion element according to claim 31 , wherein the separating structure comprises a multiplicity of strip-shaped elements having a wavy profile, which are fixed to one another.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Mönch Wolfgang
• Singer Frank

Classifications

• H10W90/00

  Package configurations · CPC title

• F21V13/08

  the elements being filters or photoluminescent elements and reflectors · CPC title

• F21V9/32

  characterised by the arrangement of the photoluminescent material · CPC title

• F21S41/176

  Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title

• F21S41/285

  Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805 · CPC title