CN220397374U - Weldable fluorescent wavelength converter - Google Patents
Weldable fluorescent wavelength converter Download PDFInfo
- Publication number
- CN220397374U CN220397374U CN202321659735.6U CN202321659735U CN220397374U CN 220397374 U CN220397374 U CN 220397374U CN 202321659735 U CN202321659735 U CN 202321659735U CN 220397374 U CN220397374 U CN 220397374U
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- Prior art keywords
- fluorescent
- film
- wavelength converter
- fluorescent material
- material film
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- 239000000463 material Substances 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000002310 reflectometry Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 238000005229 chemical vapour deposition Methods 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 150000004645 aluminates Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- -1 Sr 3 SiO 5 : eu Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Optical Filters (AREA)
Abstract
The present utility model relates to a fluorescent wavelength conversion device. The utility model provides a weldable fluorescent wavelength converter which is characterized by comprising a fluorescent material film, a reflecting film and a heat conducting substrate which are sequentially arranged, wherein monochromatic incident light enters the fluorescent material film, is absorbed by the fluorescent material film and converted into light with another wavelength, and is reflected by the reflecting film positioned between the other side of the fluorescent material film and the heat conducting substrate and is output from an incident surface of the fluorescent material film. The fluorescent wavelength converter can be welded on the radiator by a welding method, and has the advantages of high efficiency, stable optical performance and structure, small volume and the like. The application range of the utility model comprises the conversion of an LED light source, a laser diode light source and the like, and is used in the technical fields of LED or laser diode illumination, display and the like.
Description
Technical Field
The utility model relates to a fluorescent wavelength conversion device which is used for converting incident light with one wavelength into output light with different wavelengths and is applied to the technical fields of LED or laser diode illumination, display and the like.
Background
The fluorescent wavelength converter absorbs incident light of one or more wavelengths by using a fluorescent material, absorbs light of different wavelengths generated from the incident light, and realizes wavelength conversion of the light. In laser diode based light sources, a fluorescent wavelength converter converts monochromatic blue light or other wavelengths of light emitted by a laser diode into white light. The conversion efficiency and other properties of the wavelength converter directly affect the efficiency, reliability and lifetime of such light sources.
The fluorescent wavelength converter generates heat during operation, especially when the incident light source is a high-power laser diode, the incident light beam is very small, for example, the beam diameter can be as small as 0.2mm, the light power of the laser beam can be as high as 5W, and the surface energy density of the incident light in the fluorescent wavelength converter can be as high as 160W/mm 2 . Since the efficiency of fluorescent wavelength conversion is generally only about 80%, about 20% of the incident light energy still needs to be converted into heat, and the heat needs to be timely led out and dissipated through a heat dissipation device. Currently available fluorescent wavelength converters are typically combined with a heat sink via a thermally conductive silicone grease to aid in the transfer of heat from the fluorescent wavelength converter to the heat sink. Such a method has several problems: firstly, the heat conduction silicone grease has limited overall heat conduction performance because of containing a large amount of organic silicone grease with poor heat conduction; secondly, the heat-conducting silicone grease is easy to age, so that the heat-conducting property is reduced sharply; third, the use of thermally conductive silicone grease requires additional mechanical attachment means.
Therefore, there is a need to find better solutions to establish an efficient and reliable thermally conductive interface between the fluorescent wavelength converter and the heat sink.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model provides a weldable fluorescent wavelength converter. Therefore, the fluorescent wavelength converter can be directly fixed on the radiator by a welding method, so that the thermal resistance between the fluorescent wavelength converter and the radiator is greatly reduced, and the reliability and stability of a heat conduction interface are improved.
The utility model is realized by the following technical scheme:
the utility model provides a weldable fluorescent wavelength converter, which is shown in fig. 1, and is characterized by comprising a fluorescent material film (101), a reflecting film (102) and a heat conducting substrate (103) which are sequentially arranged, wherein monochromatic incident light enters the fluorescent material film, is absorbed by the fluorescent material film and is converted into light with another wavelength, and is reflected by the reflecting film positioned between the other side of the fluorescent material film and the heat conducting substrate and is output from the incident surface of the fluorescent material film.
The weldable fluorescent wavelength converter is characterized in that the fluorescent material film is made of an all-ceramic material and does not contain any organic matters or glass phases.
The thickness of the fluorescent ceramic material film is between 0.01mm and 0.40 mm.
The combination of the fluorescent material film and the reflective film does not use any organic matter.
The fluorescent material film may be a yellow fluorescent material in that it can efficiently absorb incident light and efficiently convert it to yellow light, including but not limited to aluminate yellow fluorescent materials such as YAG: ce series, silicate series, e.g. Sr 3 SiO 5 : eu, etc.
The phosphor film may be a green phosphor, as desired, that efficiently absorbs incident light and converts it to green light, including but not limited to aluminate green phosphors such as LuAG: ce, gaAG: ce, srSiO 4 ：Eu，CaMgSi 2 O 6 : eu, etc.
The phosphor film may be a red phosphor, as desired, that absorbs incident light and converts it to red light efficiently, including but not limited to silicate series such as Sr 2 Si 7 Al 3 ON 13 ：Eu。
The reflecting film is a multilayer oxide dielectric film or a single-layer metal film, so that the reflectivity of light with the wavelength of 400-700 nm reaches more than 95%, and the reflecting film is manufactured on the polished surface of the heat conducting substrate by adopting an electron beam vapor coating, magnetron sputtering or chemical vapor deposition method.
The heat conducting substrate is processed by copper or copper alloy, and has excellent heat conducting and radiating characteristics and good welding characteristics.
The thermally conductive substrate has a thickness of between 0.5mm and 5 mm.
The bonding surface of the heat conducting substrate and the reflecting film is a high-precision polished surface.
The utility model has the following beneficial effects:
(1) Good thermal conductivity and heat dissipation performance: the whole device does not comprise any organic material component with poor heat conduction and radiation, and the heat conduction substrate and the external radiator can be tightly and reliably connected by a welding method; (2) excellent structural stability: all parts of the device are made of inorganic materials, and have excellent mechanical properties and heat resistance, so that the stability of the structure is ensured; (3) excellent conversion efficiency: the device is provided with the reflecting film, and is matched with the efficient fluorescent conversion film and good heat conduction and heat dissipation conditions of the whole device, so that the excellent conversion efficiency of the device is ensured; (4) stability of Performance: the stability of the optical performance of the whole device is ensured by good heat conduction and heat dissipation performance and the structural stability of the device; (5) miniaturization of volume: the whole device is integrated into a whole, so that the volume of the device is reduced to the greatest extent.
Drawings
FIG. 1 is a schematic cross-sectional view of a fluorescent wavelength conversion device of the present utility model. Wherein, (101) is a fluorescent material film, (102) is a reflecting film, and (103) is a heat conducting substrate.
Fig. 2 is a schematic diagram of the working principle of wavelength conversion implemented after incident light passes through the fluorescent wavelength converter of the present utility model. Wherein, (201) is a fluorescent material film, (202) is a reflecting film, and (203) is a heat conducting substrate. (204) The spectrum of the incident light and (205) the spectrum of the output light.
Detailed Description
The following is a specific embodiment of the present utility model and further describes the technical solution of the present utility model with reference to fig. 2. The present utility model is not limited to these examples.
The wavelength converter is constructed as follows:
(1) First, a copper sheet with a thickness of 2mm, a diameter of 5mm, and a single-sided polishing was selected as a heat conductive substrate (203) to be used as a substrate for a reflective film and a fluorescent material film.
(2) The heat conducting substrate (203) is polished on both sides, and one of the sides is further polished to a surface roughness better than Ra less than 0.1um.
(3) And plating an Al film (202) with high reflectivity on the polished surface of the heat conducting substrate (203), wherein the reflectivity of the reflecting film is not less than 90%.
Uniformly coating a layer of Y with a thickness of 0.10mm-0.15mm on the reflecting film (202) 2 O 3 、Al 2 O 3 And CeO 2 Ceramic slurry composed of powder, high temperature sintering to remove water and organic matter to form fluorescent material film (201) and realize reflecting film [202 ]]Is a combination of (a) and (b).
Fig. 2 shows that after passing through the wavelength converter of the present utility model with a blue laser diode (emission wavelength 450 nm) as incident light (204), yellow light (peak wavelength 550 nm) with a wider wavelength and part of the unconverted blue light (205) are output on the same side, achieving the desired wavelength conversion function.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.
Claims (8)
1. A weldable fluorescent wavelength converter is characterized by comprising a fluorescent material film, a reflecting film and a heat conducting substrate which are sequentially arranged, wherein monochromatic incident light enters the fluorescent material film, is absorbed by the fluorescent material film and converted into light with another wavelength, and is output from an incident surface of the fluorescent material film through the reflecting thickness of the reflecting film between the other side of the fluorescent material film and the heat conducting substrate.
2. The weldable fluorescent wavelength converter according to claim 1, wherein the fluorescent material film is an all-ceramic material, and does not contain any organic or glass phase.
3. A weldable fluorescent wavelength converter according to claim 1, wherein the fluorescent material film has a thickness of between 0.01mm and 0.40 mm.
4. The weldable fluorescent wavelength converter of claim 2, wherein the fluorescent material film is combined with the reflective film without using any organic material.
5. The weldable fluorescent wavelength converter of claim 1, wherein the reflective film is a multilayer oxide dielectric film or a single-layer metal film to ensure that the reflectivity of light with a wavelength between 400nm and 700nm reaches more than 95%, and is manufactured by electron beam vapor coating, magnetron sputtering, or chemical vapor deposition.
6. The solderable fluorescent wavelength converter of claim 1 wherein the thermally conductive substrate is fabricated from copper or copper alloy.
7. The solderable fluorescent wavelength converter of claim 6, wherein the thermally conductive substrate has a thickness of between 0.5mm and 5 mm.
8. The solderable fluorescent wavelength converter of claim 6 wherein the interface of the thermally conductive substrate and the reflective film is a high precision polished surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321659735.6U CN220397374U (en) | 2023-06-28 | 2023-06-28 | Weldable fluorescent wavelength converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321659735.6U CN220397374U (en) | 2023-06-28 | 2023-06-28 | Weldable fluorescent wavelength converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220397374U true CN220397374U (en) | 2024-01-26 |
Family
ID=89615021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321659735.6U Active CN220397374U (en) | 2023-06-28 | 2023-06-28 | Weldable fluorescent wavelength converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220397374U (en) |
-
2023
- 2023-06-28 CN CN202321659735.6U patent/CN220397374U/en active Active
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