CN212029178U - High-stability high-thermal-conductivity laser white light structure - Google Patents
High-stability high-thermal-conductivity laser white light structure Download PDFInfo
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- CN212029178U CN212029178U CN202020316371.1U CN202020316371U CN212029178U CN 212029178 U CN212029178 U CN 212029178U CN 202020316371 U CN202020316371 U CN 202020316371U CN 212029178 U CN212029178 U CN 212029178U
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- glass carrier
- antireflection film
- blue light
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Abstract
A high-stability high-heat-conductivity laser white light structure comprises a blue light laser diode, a blue light antireflection film, an antireflection film, a first glass carrier, a second glass carrier and a fluorescent film, wherein the blue light antireflection film is plated on one side of the second glass carrier, the fluorescent film is coated on the other side of the second glass carrier, the antireflection film is plated on one side of the first glass carrier, the blue light antireflection film on the second glass carrier is attached to the other side of the first glass carrier, the first glass carrier and the second glass carrier are both subjected to silk-screen printing to form a moth-eye structure, and the antireflection film, the first glass carrier, the blue light antireflection film, the second glass carrier and the fluorescent film are sequentially placed perpendicular to laser emergent light from near to far according to the positions of blue light laser tubes. The utility model discloses can arouse Y at blue light LD3Al5O12:Ce@SiO2The white light with high luminous flux is output under the condition of the fluorescent powder, so that the service life of the white light LD is prolonged, and the white light LD can be applied to high-power laser-driven solid-state lighting.
Description
Technical Field
The utility model relates to a laser white light structure of high heat conductivity of high stability is used in the illumination field.
Background
Blue LED chips have a "drop in efficiency" problem that makes LED chips unsuitable for ultra-high power or brightness solid state lighting applications. In contrast, laser diodes have a higher threshold for this degradation and have better characteristics, whereas the low thermal conductivity of conventional encapsulation materials leads to yellowing at high power and long-term irradiation, which degrades the overall illumination device. At present, methods such as using a ceramic substrate and changing the shape and structure of the substrate are used for realizing heat dissipation in laser illumination, but the heat dissipation is still insufficient for high-power laser illumination. Therefore, in order to maximize the advantages of the laser diode in exciting the fluorescent material, a new structure with high thermal conductivity is urgently required for effective heat dissipation in high-power laser illumination.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the to-be-solved problem of the utility model is to provide a laser white light structure with high stability and high thermal conductivity.
Therefore, the utility model adopts the technical scheme that: the laser white light structure comprises a blue light laser diode (1), a blue light antireflection film (4), an antireflection film (2), a first glass carrier (3), a second glass carrier (5) and a fluorescent film (6), wherein the blue light antireflection film (4) is plated on one side of the second glass carrier (5), the fluorescent film (6) is coated on the other side of the second glass carrier, the antireflection film (2) is plated on one side of the first glass carrier (3), the blue light antireflection film (4) on the second glass carrier (5) is tightly attached to the other side of the first glass carrier, and moth eye structures are manufactured on the first glass carrier (3) and the second glass carrier (5).
Further, the fluorescent powder used by the fluorescent film (6) is Y3Al5O12:Ce@SiO2。
Furthermore, the first glass carrier (3) and the second glass carrier (5) are made of sapphire or quartz glass with a moth-eye structure.
Further, the inclination angle of each moth eye in the moth eye structure is 37 degrees, and the diameter of each moth eye is 3 μm.
Furthermore, the antireflection film (2), the first glass carrier (3), the blue light antireflection film (4), the second glass carrier (5) and the fluorescent film (6) are sequentially placed perpendicular to laser emergent light from near to far away from the blue laser diode (1).
The utility model has the advantages that: 1) the common sapphire or quartz glass is replaced by silk-screen printing moth-eye structure sapphire or quartz glass, so that the heat dissipation performance of the structure is effectively improved.
2) The two layers of thin films plated on sapphire or quartz glass combine the structural characteristics on the substrate to better improve the transmittance of the sapphire and increase the heat dissipation of the structure.
Drawings
Fig. 1 is a schematic structural diagram of a laser white light structure according to the present invention.
Fig. 2 is a schematic view of a glass support with a moth-eye structure.
Fig. 3 is a side view of a moth eye in the moth eye structure.
In the figure, 1 is a blue laser diode, 2 is an antireflection film, 3 is a first glass carrier, 4 is a blue antireflection film, 5 is a second glass carrier, and 6 is a fluorescent film.
Detailed Description
The utility model is further explained with the following figures to better understand the utility model:
referring to fig. 1, a laser white light structure with high thermal conductivity includes a blue laser diode 1, a blue light antireflection film 4, an antireflection film 2, a first glass carrier 3, a second glass carrier 5, and a fluorescent thin film 6, wherein one side of the second glass carrier 5 is plated with the blue light antireflection film 4, the other side of the second glass carrier 5 is coated with the fluorescent thin film 6, one side of the first glass carrier 3 is plated with the antireflection film 2, the other side of the first glass carrier 3 is tightly attached to the blue light antireflection film 4 on the second glass carrier 5, the first glass carrier 3 and the second glass carrier 5 are made of sapphire with moth-eye structure, and the antireflection film 2, the first glass carrier 3, the blue light antireflection film 4, the second glass carrier 5, and the fluorescent thin film 6 are sequentially placed perpendicular to laser emergent light from near to far away from the position of the blue.
The fluorescent film in the white LD according to the present invention uses Y3Al5O12:Ce@SiO2The fluorescent powder can be excited by blue laser to emit yellow light, and the blue light emitted by the blue LD is mixed with Y according to the RGB color development principle3Al5O12:Ce@SiO2The yellow light emitted by the fluorescent powder can obtain white light.
Referring to fig. 1, in a high-stability high-thermal-conductivity laser white light structure, an antireflection film 2 is plated on a first glass carrier 3, a fluorescent film 6 is firstly coated on a second glass carrier 5, a blue light antireflection film 4 is plated after sintering, then the two glass carriers are bonded, and the first glass carrier 3 and the second glass carrier 5 are both glass carriers with moth-eye structures.
FIG. 2 shows the cross-sectional distribution of a glass carrier with a moth-eye structure, wherein a film is coated on one side of the glass carrier with the moth-eye structure, and a fluorescent film is bonded or coated on the other side of the glass carrier.
Fig. 3 is a side view of a moth-eye structured glass support, preferably tilted at an angle of 37 °.
The utility model discloses chooseed for use the glass carrier of two moth-eye structures and plated antireflection coating 2 and blue light antireflection coating 4, it can be with the heat of the blue light that blue light laser diode 1 sent through moth-eye structure heat dissipation to with partly heat through antireflection coating 2 and blue light antireflection coating 4 effluvium, thereby reduce the heat on the fluorescence film, improved the efficiency of this structure.
The maximum power density of the blue light laser diode 1 is 10.3Wmm-2。
The first glass carrier 3 and the second glass carrier 5 of the utility model are made of sapphire or quartz glass with moth-eye structure,
the optimal inclination angle of each moth eye in the carrier of the moth eye structure is 37 degrees, and the optimal diameter is 3 mu m.
The above is the specific embodiment of the present invention, and any reasonable improvements made on this basis are all within the protection scope of the present invention.
Claims (5)
1. The laser white light structure is characterized by comprising a blue light laser diode (1), a blue light antireflection film (4), an antireflection film (2), a first glass carrier (3), a second glass carrier (5) and a fluorescent film (6), wherein the blue light antireflection film (4) is plated on one side of the second glass carrier (5), the fluorescent film (6) is coated on the other side of the second glass carrier, the antireflection film (2) is plated on one side of the first glass carrier (3), the blue light antireflection film (4) on the second glass carrier (5) is tightly attached to the other side of the first glass carrier, and the first glass carrier (3) and the second glass carrier (5) are both made into moth-eye structures.
2. The structure of claim 1, wherein the fluorescent thin film is a high-stability high-thermal-conductivity laser white light structure(6) The phosphor used is Y3Al5O12:Ce@SiO2。
3. A high stability high thermal conductivity laser white light structure according to claim 2, characterized in that the first glass carrier (3) and the second glass carrier (5) are made of sapphire or quartz glass with moth eye structure.
4. The laser white light structure with high stability and high thermal conductivity as claimed in claim 1, wherein the inclined angle of each moth eye in the moth eye structure is 37 ° and the diameter is 3 μm.
5. The laser white light structure with high stability and high thermal conductivity as claimed in claim 1, wherein the antireflection film (2), the first glass carrier (3), the blue light antireflection film (4), the second glass carrier (5), and the fluorescent thin film (6) are sequentially placed perpendicular to laser emergent light from near to far away from the position of the blue laser diode (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020316371.1U CN212029178U (en) | 2020-03-15 | 2020-03-15 | High-stability high-thermal-conductivity laser white light structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020316371.1U CN212029178U (en) | 2020-03-15 | 2020-03-15 | High-stability high-thermal-conductivity laser white light structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212029178U true CN212029178U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020316371.1U Active CN212029178U (en) | 2020-03-15 | 2020-03-15 | High-stability high-thermal-conductivity laser white light structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN212029178U (en) |
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2020
- 2020-03-15 CN CN202020316371.1U patent/CN212029178U/en active Active
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