Wavelength conversion component having photo-luminescence material embedded into a hermetic material for remote wavelength conversion

• US 9,365,766 B2
• Filed: 10/13/2011
• Issued: 06/14/2016
• Est. Priority Date: 10/13/2011
• Status: Active Grant

• Current Assignee: Intematix Corporation
• Original Assignee: Intematix Corporation
• Inventors: Huang, Diyun, Dai, Bing, Edwards, Charles
• Primary Examiner(s): Hines, Anne
• Assistant Examiner(s): Diaz, Jose M
• Application Number:
  US13/273,200
• Publication Number:
  US 20130094178A1
• Time in Patent Office: 1,706 Days
• Field of Search: 313498-512, 313/489, 313/110, 313/112, 313/485, 313/493, 313/635
• US Class Current: 1/1
• CPC Class Codes: C09K 11/02 Use of particular materials as binders, particle coatings or suspension media therefor
• CPC Class Codes: C09K 11/08 containing inorganic luminescent materials
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21L 4/00 Electric lighting devices with self-contained electric batteries or cells
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21V 7/06 with parabolic curvature
• CPC Class Codes: F21V 9/06 for filtering out ultraviolet radiation
• CPC Class Codes: F21V 9/32 characterised by the arrangement of the photoluminescent material
• CPC Class Codes: F21V 9/38 Combination of two or more photoluminescent elements of different materials
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed are improved wavelength conversion components having photo-luminescent materials embedded into a hermetic material. Phosphor materials are embedded into a layer of glass, which is then utilized in a remote phosphor LED lighting apparatus. Methods for manufacturing these advanced wavelength conversion components are also described.

Claims

1. A wavelength conversion component embodied in a light emitting device, comprising:

an amorphous hermetic layer that is optically transparent to wavelengths of the range of 400 nm to 700 nm;

a light-transmissive substrate layer, wherein the substrate layer and the amorphous hermetic layer are in direct contact

a photo-luminescent material embedded within the amorphous hermetic layer, comprising a phosphor operable to emit light of a first wavelength range when excited by excitation light of a second wavelength range; and

wherein light of the first wavelength range has a longer wavelength than light of the second wavelength range;

at least one solid-state light emitter operable to generate excitation light, wherein the at least one solid-state light emitter is spaced apart from the amorphous hermetic layer by an air gap.

2. The wavelength conversion component of claim 1, wherein the substrate layer and the amorphous hermetic layer are composed of the same material.

3. The wavelength conversion component of claim 2, wherein the glass is formed from glass frit or glass powder.

4. The wavelength conversion component of claim 1, wherein the amorphous hermetic layer comprises glass.

5. The wavelength conversion component of claim 1, further comprising a second amorphous hermetic layer having a second photo-luminescent material embedded within the second amorphous hermetic layer, wherein the photo-luminescent material possess different material properties from the second photo-luminescent material.

6. The wavelength conversion component of claim 5 in which the photo-luminescent material and the second photo-luminescent material correspond to different phosphor materials.

7. The wavelength conversion component of claim 5 in which the photo-luminescent material and the second photo-luminescent material correspond to different color producing materials.

8. The wavelength conversion component of claim 1 wherein the at least one solid-state light emitter is spaced apart from the amorphous hermetic layer by at least 1 cm.

9. The wavelength conversion component of claim 1 wherein the at least one solid-state light emitter comprises a blue light LED and the amorphous hermetic layer comprises a phosphor material, where a combination of light wavelengths producable from the blue light LED and the phosphor material results in white-appearing light.

10. The wavelength conversion component of claim 1, wherein the light emitting device is selected from the group consisting of:

downlights, light bulbs, linear lamps, lanterns, wall lamps, pendant lamps, chandeliers, recessed lights, track lights, accent lights, stage lighting, movie lighting, street lights, flood lights, beacon lights, security lights, traffic lights, headlamps, taillights, and signs.

11. The wavelength conversion component of claim 1, further comprising:

an elongate housing, wherein the at least one solid-state light emitter is housed within the elongate housing; and

wherein the amorphous hermetic layer is elongate in form and configured to in part at least define a light mixing chamber.

12. The wavelength conversion component of claim 1, further comprising:

a body housing the at least one solid-state light emitter, wherein the body is configured to be positioned within a downlighting fixture such that the downlight emits light in a downward direction; and

wherein the amorphous hermetic layer is configured to in part at least define a light mixing chamber.

13. The wavelength conversion component of claim 1, further comprising:

a connector base configured to be inserted in a socket to form an electrical connection for the at least one solid-state light emitter; and

wherein the amorphous hermetic layer has a three dimensional shape that is configured to enclose the at least one solid-state light emitter and to in part at least define a light mixing chamber.

14. The wavelength conversion component of claim 1, wherein the amorphous hermetic layer comprises a material having a firing temperature between 400 and 600 degrees Celsius.