Miniaturized high-power blue-white laser light source
By using a structure combining aluminum nitride ceramic shell and copper heat sink block in the laser light source, the problems of poor heat dissipation functions and large volume of existing laser light sources are solved, and a high-power laser light source is achieved. By flexibly adjusting the number of chips and mirrors, switching of multiple powers and light colors is achieved, meeting the diverse needs of users.
Patent Information
- Application Number
- CN202420469608.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The existing laser light source has poor heat dissipation function, large volume and weight, and is not suitable for carrying and installing, and cannot meet the needs of most users.
The structure of a combination of aluminum nitride ceramic shell and copper heat sink block is adopted to fill the gap with aluminum nitride ceramic slurry to increase heat dissipation effect, and a reflective block and chip placement surface with a 45° inclined slope are set on the copper heat sink block, allowing users to flexibly adjust the number of laser chips and mirrors or ceramic fluorescent sheets to adjust power and light color.
It realizes miniaturization and high-power blue-white laser light source, with excellent heat dissipation effect, is small in size, suitable for carrying and installing, and by flexibly adjusting the number of chips and mirrors, switching of multiple powers and light colors is achieved, increasing the versatility of raw materials and reducing costs.
Smart Images
Figure CN222563228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laser light sources, in particular to a miniaturized high-power blue-white laser light source. Background Art
[0002] With the continuous development of science and technology, laser light sources have also been widely used in the fields of medical treatment, communication, industrial processing, military, etc. For example, in the medical field, lasers can be used for surgery, diagnosis and treatment; in the communication field, lasers can be used for high-speed data transmission and optical fiber communication; in the industrial processing field, lasers can be used for high-precision operations such as cutting, welding and drilling.
[0003] However, the laser light sources currently on the market have poor heat dissipation capabilities and rely on their housings themselves for heat dissipation. At the same time, they are relatively large in size and weight, making them unsuitable for carrying and installation, and cannot meet the needs of most users. Utility Model Content
[0004] In order to solve the above problems, the utility model provides a miniaturized high-power blue-white laser light source.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: the utility model relates to a miniaturized high-power blue-white laser light source, comprising an aluminum nitride ceramic shell, a copper heat sink block, a metallized quartz glass coating, a laser chip and a reflector or a ceramic fluorescent sheet, the aluminum nitride ceramic shell is a shell structure with an opening facing upward, the metallized quartz glass coating is installed at the opening of the aluminum nitride ceramic shell and closes the opening, the copper heat sink block is arranged inside the aluminum nitride ceramic shell, the copper heat sink block is provided with a reflective inclined surface and a chip placement surface, both of which are arranged facing the direction of the metallized quartz glass coating, the reflector or the ceramic fluorescent sheet is installed on the reflective inclined surface, and the laser chip is installed on the chip placement surface.
[0006] Preferably, a sinker accommodating groove and a light emitting groove are provided in the aluminum nitride ceramic shell, and a connecting port is provided between the sinker accommodating groove and the light emitting groove, and the connecting port enables the sinker accommodating groove and the light emitting groove to communicate with each other; the copper heat sink block includes a sinker main body and a light emitting platform, and the light emitting platform is arranged on the top surface of the sinker main body; when the copper heat sink block is arranged in the aluminum nitride ceramic shell, the sinker main body is arranged in the sinker accommodating groove, and the light emitting platform is exposed to the light emitting groove through the connecting port.
[0007] Preferably, the top of the light emitting platform is a chip placement surface, a reflective block is provided on the chip placement surface, and the reflective block has a reflective inclined surface inclined at a certain angle relative to the chip placement surface.
[0008] Preferably, the reflective inclined surface is inclined at an angle of 45° on the reflective block.
[0009] Preferably, the reflective inclined surface and the chip placement surface are integrally formed.
[0010] Preferably, the light source emitted by the laser chip reflected by the reflector is blue light.
[0011] Preferably, the ceramic fluorescent sheet reflects white light emitted by the laser chip.
[0012] In order to adjust different power sizes, preferably, 1 to 3 reflectors or ceramic fluorescent sheets can be installed on the reflective inclined surface.
[0013] In order to adjust different power sizes, preferably, 1 to 3 laser chips can be installed on the chip placement surface.
[0014] In order to make the copper heat sink block and the aluminum nitride ceramic shell more tightly combined, preferably, there is a gap between the copper heat sink block and the aluminum nitride ceramic shell, and aluminum nitride ceramic slurry is arranged in the gap.
[0015] The beneficial effect of the utility model is that the utility model relates to a miniaturized high-power blue-white laser light source, and one shell size can realize three levels (1-3 chips can be selected arbitrarily) of light sources with different optical powers. The luminous color can also be switched between blue light and white light by replacing the reflector.
[0016] In the utility model, there is a gap between the aluminum nitride ceramic shell and the copper heat sink block, and the gap is filled with aluminum nitride ceramic slurry. The aluminum nitride ceramic slurry tightly combines the aluminum nitride ceramic shell and the copper heat sink block. The chip is arranged on the copper heat sink block, and the copper heat sink block realizes chip heat dissipation, and the heat dissipation effect is good. In the utility model, a reflective block with a 45° inclined slope and a chip placement surface are arranged on the light output platform of the copper heat sink block. The reflective inclined surface and the chip placement surface are integrally formed, and the user can freely mount different numbers of chips according to the power size of the product, thereby realizing flexible adjustment of multiple power laser light sources. At the same time, in the utility model, the light reflected by the reflector or ceramic fluorescent sheet is different. The user only needs to replace the reflector or ceramic fluorescent sheet to flexibly realize the switching between blue light and white light, thereby increasing the versatility of the raw materials and reducing the cost. At the same time, the volume of the laser light source of the utility model is small, and only a 5W 450nm laser chip is used, which can emit a blue light or white light laser light source, and is small and suitable for carrying and installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0018] Figure 2 It is a schematic diagram of the explosion structure of the utility model.
[0019] Figure 3It is a structural schematic diagram of the aluminum nitride ceramic shell of the utility model.
[0020] Figure 4 This is another perspective structural diagram of the aluminum nitride ceramic housing of the utility model.
[0021] Figure 5 It is a structural schematic diagram of the copper heat sink block of the utility model.
[0022] Figure 6 It is a schematic diagram of the structure in which a reflector or a ceramic fluorescent sheet and a laser chip are installed on a copper heat sink block.
[0023] Reference numerals
[0024] 1. Aluminum nitride ceramic shell; 11. Sink receiving groove; 12. Light output groove; 13. Connection port; 2. Copper heat sink block; 21. Sink body; 22. Light output platform; 221. Chip placement surface; 222. Reflection block; 223. Reflection inclined surface; 3. Metallized quartz glass coating; 4. Laser chip; 5. Reflector; 6. Ceramic phosphor; 7. Aluminum nitride ceramic slurry. DETAILED DESCRIPTION
[0025] See also Figure 1-6 As shown, the utility model relates to a miniaturized high-power blue-white laser light source, comprising an aluminum nitride ceramic shell 1, a copper heat sink block 2, a metallized quartz glass coating 3, a laser chip 4 and a reflector 5 or a ceramic fluorescent sheet 6, wherein the aluminum nitride ceramic shell 1 is a shell structure with an opening facing upward, the metallized quartz glass coating 3 is installed at the opening of the aluminum nitride ceramic shell 1 and closes its opening, the copper heat sink block 2 is arranged inside the aluminum nitride ceramic shell 1, the copper heat sink block 2 is provided with a reflective inclined surface 223 and a chip placement surface 221, the reflective inclined surface 223 and the chip placement surface 221 are integrally formed, and the reflective inclined surface 223 and the chip placement surface 221 are both arranged facing the direction of the metallized quartz glass coating 3, the reflector 5 or the ceramic fluorescent sheet 6 is installed on the reflective inclined surface 223, and the laser chip 4 is installed on the chip placement surface 221. In this embodiment, the light source emitted by the laser chip 4 is irradiated onto the reflector 5 or the ceramic fluorescent sheet 6, and the reflector 5 or the ceramic fluorescent sheet 6 reflects the light source onto the metallized quartz glass coating 3, thereby producing a blue or white light source.
[0026] Furthermore, in this embodiment, a sinker accommodating groove 11 and a light emitting groove 12 are provided in the aluminum nitride ceramic shell 1, and a connecting port 13 is provided between the sinker accommodating groove 11 and the light emitting groove 12, and the connecting port 13 connects the sinker accommodating groove 11 and the light emitting groove 12 to each other.
[0027] In this embodiment, the copper heat sink block 2 is made of a copper block treated with gold plating on its surface. The copper heat sink block 2 includes a sink block body 21 and a light emitting platform 22, which is arranged on the top surface of the sink block body 21, and the cross-sectional shape of the light emitting platform 22 matches the connection port 13.
[0028] When the copper heat sink block 2 is disposed in the aluminum nitride ceramic housing 1, the sink block body 21 is disposed in the sink block receiving groove 11, and the light output platform 22 is exposed to the light output groove 12 through the connecting port 13. There is a gap between the copper heat sink block 2 and the aluminum nitride ceramic housing 1, and the gap is filled with aluminum nitride ceramic slurry 7.
[0029] Furthermore, the top of the light emitting platform 22 is a chip placement surface 221, and a reflection block 222 is provided on the chip placement surface 221. The shape of the reflection block 222 can be a rhombus column or other shapes. In the present embodiment, the reflection block 222 is in the shape of a triangular prism and is horizontally placed on one side of the light emitting platform 22. The reflection block 222 has a reflection inclined surface 223 inclined at a certain angle relative to the chip placement surface 221. In the present embodiment, the reflection inclined surface 223 is inclined at an angle of 45° to the reflection block 222, and the reflection inclined surface 223 is integrally connected to the chip placement surface 221.
[0030] Furthermore, in this embodiment, the back of the reflector 5 or the ceramic fluorescent sheet 6 has a metal layer, and the reflector 5 or the ceramic fluorescent sheet 6 is installed on the reflective inclined surface 223 through the metal layer using heat-conducting silver paste. The light colors produced by the reflector 5 or the ceramic fluorescent sheet 6 are different. When the light emitted by the laser chip 4 irradiates the reflector 5, the reflector 5 will reflect the light source to the metallized quartz glass coating 3 and create blue light; in this embodiment, a 5W 450nm laser chip 4 is used. When the light emitted by the laser chip 4 irradiates the ceramic fluorescent sheet 6, the ceramic fluorescent sheet 6 will reflect the light source to the metallized quartz glass coating 3 and create white light. The user can switch according to the demand for producing light color.
[0031] In this embodiment, the user can install 1 to 3 reflectors 5 or ceramic fluorescent sheets 6 on the reflective inclined surface 223 according to power requirements, and correspondingly install 1 to 3 laser chips 4 on the chip placement surface 221, so as to adjust the power.
[0032] The following is a production process of a miniaturized high-power blue-white laser light source of the utility model: 1. Use a mold to punch out a copper block into a semi-finished copper heat sink block 2 with a 45° slope; 2. Insert the semi-finished copper heat sink block 2 into the ceramic shell, use aluminum nitride ceramic slurry 7 to fill the gap between the copper block and the ceramic shell and sinter them together at high temperature. After sintering, the surface of the semi-finished copper heat sink block 2 is treated with gold plating and the like to form an aluminum nitride ceramic shell 1 and a copper heat sink block 2; 3. According to production needs, such as producing blue light, the reflector 5 is installed on the reflective inclined surface 223 through the metal layer on the back using thermal conductive silver paste; if white light is produced, the metal layer on the back of the ceramic fluorescent sheet 6 is installed on the reflective inclined surface 223 using thermal conductive silver paste; 4. Mount the laser chip 4 on the chip placement surface 221; 5. Use gold wire to connect to the laser chip 4 and install Zener for protection; 6. Use gold-tin solder to weld the metallized quartz glass coating 3 to the opening of the aluminum nitride ceramic shell 1 in a vacuum furnace.
[0033] The utility model relates to a miniaturized high-power blue-white laser light source. In the utility model, there is a gap between the aluminum nitride ceramic shell 1 and the copper heat sink block 2, and the gap is filled with aluminum nitride ceramic slurry 7. In the utility model, a reflective block 222 with a 45° slope and a chip placement surface 221 are set on the light output platform 22 of the copper heat sink block 2, and the reflective inclined surface 223 is integrally connected with the chip placement surface 221. The user can freely mount different numbers of reflectors 5 or ceramic fluorescent sheets 6 on the reflective inclined surface 223 according to the power of the product, thereby realizing flexible adjustment of multiple power laser light sources. At the same time, in the utility model, the light colors reflected by the reflector 5 or the ceramic fluorescent sheet 6 are different. The user only needs to replace the reflector 5 or the ceramic fluorescent sheet 6 to flexibly realize the switching between blue light and white light, thereby increasing the versatility of the raw materials and reducing the cost. At the same time, the volume of the laser light source of the utility model is small, and only a 5W 450nm laser chip 4 is used, which can emit a laser light source of blue light or white light, and is small and suitable for carrying and installation.
[0034] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A miniaturized high-power blue-white laser light source, characterized in that: It includes an aluminum nitride ceramic shell, a copper heat sink block, a metallized quartz glass coating, a laser chip and a reflector or a ceramic fluorescent sheet. The aluminum nitride ceramic shell is a shell structure with an opening facing upward. The metallized quartz glass coating is installed at the opening of the aluminum nitride ceramic shell and closes the opening. The copper heat sink block is arranged inside the aluminum nitride ceramic shell. The copper heat sink block is provided with a reflective inclined surface and a chip placement surface. Both the reflective inclined surface and the chip placement surface are arranged facing the direction of the metallized quartz glass coating. The reflector or the ceramic fluorescent sheet is installed on the reflective inclined surface, and the laser chip is installed on the chip placement surface.
2. A miniaturized high-power blue-white laser light source according to claim 1, characterized in that: A sinker receiving groove and a light emitting groove are provided in the aluminum nitride ceramic shell, and a connecting port is provided between the sinker receiving groove and the light emitting groove, and the connecting port enables the sinker receiving groove and the light emitting groove to communicate with each other; the copper heat sink block includes a sinker main body and a light emitting platform, and the light emitting platform is arranged on the top surface of the sinker main body; when the copper heat sink block is arranged in the aluminum nitride ceramic shell, the sinker main body is arranged in the sinker receiving groove, and the light emitting platform is exposed to the light emitting groove through the connecting port.
3. A miniaturized high-power blue-white laser light source according to claim 2, characterized in that: The top of the light emitting platform is a chip placement surface, and a reflection block is arranged on the chip placement surface. The reflection block has a reflection inclined surface that is inclined at a certain angle relative to the chip placement surface.
4. A miniaturized high-power blue-white laser light source according to claim 3, characterized in that: The reflective inclined surface is inclined at an angle of 45° on the reflective block.
5. A miniaturized high-power blue-white laser light source according to claim 1 or 4, characterized in that: The reflective inclined surface and the chip placement surface are integrally formed.
6. A miniaturized high-power blue-white laser light source according to claim 1, characterized in that: The light source emitted by the laser chip reflected by the reflector is blue light.
7. A miniaturized high-power blue-white laser light source according to claim 1, characterized in that: The ceramic fluorescent sheet reflects the light source emitted by the laser chip as white light.
8. The miniaturized high-power blue-white laser light source according to claim 1, characterized in that: The reflectors or ceramic fluorescent sheets can be installed in 1 to 3 pieces on the reflective inclined surface.
9. The miniaturized high-power blue-white laser light source according to claim 1, characterized in that: One to three laser chips can be mounted on the chip placement surface.
10. The miniaturized high-power blue-white laser light source according to claim 1, characterized in that: There is a gap between the copper heat sink block and the aluminum nitride ceramic shell, and aluminum nitride ceramic slurry is arranged in the gap.